Category: Science

Mammal Classification by orders

Cheetahs and Lions Trapped by Time and Place – The Theory of Specialization Extinction – Part 3

Cheetah standing in grassy savanna with trees and antelope in background

INTRODUCTION

This presentation is the third in a series of blogs that uses the example of Cheetahs and Lions to show the survivability effects of evolving specialization. The first in the series lays the foundation of geography, climate and time. The second compared two African cats; Lions and Cheetahs. This presentation introduces the concept of traps. The “traps” are made of time, location, resources and specializations. They put these cats at risk for survival. Survival of the species depends on behavioral modification, physiologic adaptation and selection by desirable mating. We may have exposed ourselves to the same traps. This is not about mechanical traps. These are more insidious.

In The opening video clip – The “traps in this presentation are UNINTENTIONALLY generated by the animal’s remarkable behavior and adaptations. They are more SIGNIFICANT than physical traps

Traps are the delimiters that block biologic adaptation to a changing environment. Inability to overcome traps leads to extinction. It is not about survival of the fittest. It is about survival of the most adaptable. This is the reason to study the survival of these two cats. Understanding the pitfalls will reflect on the survival of everything, specifically us.

In order to discuss unintentional consequences of behavior leading to traps, I suggest that we review of the work of the naturalists of the 18th century. Several theories had been proposed. The most notable is the Theory of Evolution. Darwin and Wallace proposed the foundational ideas. Survival of the fittest forces the origin of species. Additionally, isolation promotes differentiation. In the view of these observers of nature, there is a progressive change in the survival of the majority. I propose an alternative view of the Darwinian theory. Let’s call this the Theory of Specialized Extinction.

THEORY OF EVOLUTION

I respect the pioneering publication of the books of Charles Darwin. These include The Beagle diary (1839), Origin of the Species (1859) and The Descent of Man, and Selection in Relation to Sex (1871). I first read these 66 years ago when I was in high school. Here are the tenants of his theory. My comments are in italics.

Overproduction: Organisms produce more offspring than their local environment can support, which leads to competition for limited resources. Alternatively, it may lead to cooperation, revolution or migration.
Variation: Individuals within a single species naturally display a wide range of variation in their physical traits, behaviors, and genetic makeup. This suggests that there are mutations in the population.
Inheritance: Many of these unique variations are heritable—meaning they can be passed down from parents to their offspring. This does not take into consideration dominant and recessive genes.
Differential Survival & Reproduction: Individuals possessing traits best adapted to their specific environment (“survival of the fittest”) are more likely to survive threats and successfully reproduce. If individuals are highly specialized they may not be able to adapt to the changing environment.
Descent with Modification: Over vast expanses of time, these advantageous traits become more common in the population. Gradually, this accumulation of changes can lead to the emergence of entirely new species. The rate of accumulation of traits depends on the complexity of the organism. The accumulation of traits does not necessarily lead to new species but may lead to species vulnerabilities.

Most of Darwin’s work suggests a time line with a steady progression of change, most of which was deemed to be an improvement. In prospect most of his writing appears to be intrinsically biased. Yes, there is change, however, it is coincidental with “implicit bias”. It does not confirm causality. Additionally, an apex implies that there is a narrowing of differentiation that is progressively better. It presumes the philosophical question of a decision tree which has an apex. It does not imply value to alternative views.

Although it is implied, there is no proof of progressive improvement in the Darwinian model. In fact, as we rapidly degrade the environment the apex creatures may be the first to go extinct. Depending on your point of view, does increased specialization imply improvement or loss of adaptive capacity? In fact does life and specialization run contrary to the laws of thermodynamics. The second law predicts disorganization.

A horizontal continuum for example could be applied to the time line of species differentiation. Here is a visual representation of a relationship between and among animal adaptability and humidity during the recent 20,000-year history of the area. I picked humidity because, as you could see in our previous presentations, desertification was the most prominent aspect of the environments we explored.

3D scatter plot showing vertebrate adaptability index versus climate matrix over a timeline from 20,000 years before present to the present. The plot features colored data points indicating adaptability levels across different time periods.

X-Axis (Time): Spans from \(20,000\) years ago (Last Glacial Maximum) to the present day.
Y-Axis (Animal Adaptability): Represents the biological versatility and survival threshold of the regional fauna.
Z-Axis (Relative Humidity / Moisture): Represents the effective regional moisture, tracking the African Humid Period (approx. \(15,000\) to \(5,000\) years ago) and the subsequent Holocene aridification

Please see the extensive discussion of this in the following posting titled Exploring Animal Adaptability in Southeast Africa.

The 20,000-Year Timeline

  • 20,000 to 15,000 Years Ago (Last Glacial Maximum):
    • Z (Humidity): Low. The climate was cool and highly arid.
    • Y (Adaptability): Low to Moderate. Only highly resilient generalist species (versatile feeders and water-independent grazers) persisted in the harsh, patchy grassland habitats. [1, 2, 3]
  • 15,000 to 5,000 Years Ago (African Humid Period):
    • Z (Humidity): High. Monsoon rains expanded into the southern tropics, creating vast, resource-rich savannas and lakes (such as those in the Lake Malawi basin).
    • Y (Adaptability): High. The lush, stable environment allowed for an expansion of both generalist and highly specialized animal species. [1, 2, 3, 4, 5]
  • 5,000 Years Ago to Present Day (Progressive Aridification):
    • Z (Humidity): Decreasing. Regional humidity dropped significantly, causing a return to arid or semi-arid conditions.
    • Y (Adaptability): Bifurcating. Highly specialized taxa (niche foragers) faced extinction, while the surviving fauna demonstrated exceptional, evolutionarily “winnowed” adaptability. [1, 2]

Theory of SPECIALIZED extinction

Specialized Extinction is progressive reduction of life forms. It is the unspecified opposite of Darwin’s theory. Please recall that Darwin’s work of the mid 1800s predated the current concepts of ecology, genetics, statistics, modern scientific method, advances in understanding of natural history, microbiology, plate tectonics, climate change, extraterrestrial incidents, human behavior, etc.

We are experiencing the reverse of the origin of the species. This is the loss of the species variations. Species vary in response to environmental pressure. Without necessity there is no invention. With environmental change only the adaptable will survive.

MASS EXTINCTIONS

During the ice age animals located in water compromised areas or in cold climates faced environmental pressure. Many were not capable of adapting with sufficient rapidity to the changes. The advancing cold wall of ice combined with the massive dust storms which ripped across the deserts of the planes starved, froze or buried millions as they struggled to compete for diminishing food and water. These climatic events resulted in loss of thousands of species, of fauna and flora of the northern continental masses.

This process of extermination was exaggerated by bottleneck effect and genetic drift.

Illustration of genetic drift in frog populations, showing a funnel shape with green and red frogs at the top, labeled with 'death' and 'invasion,' leading to a diverse green population at the bottom.
Fig 1
Illustration explaining the bottleneck effect in population genetics, showing three stages: original population in a bottle, a bottleneck event reducing the population, and the surviving population in a cup, with a graph depicting population size over time.
Fig 2

Fig 1 and Fig 2 are two variations on population behavior that limit the genetic pool of diversified genomes.

In Fig. 1 This can happen when the genetic pool is insufficient to maintain variance. The largest constituent group are light and dark green. If the orange portion dies and the purple portion does not invade, then the survivors can only reproduce mixed green progeny.

In Fig. 2 In the biologic bottleneck only a few members of the population escape. In this case the green did not pass the bottleneck. Those that did act are founders of a new community with a more exclusive population. Since only one yellow member passed the bottleneck it represents an extinction effect unless it can hybridize with the blue members. If not it will die thus ending that part of the population. Hybridization may result in a recovery of the population that will not be exclusively blue. Alternatively, with recessive traits the population will recover with a Mendelian result.

The well known traps are outlined below. I suggest that the study of these traps may challenge the initial concepts theorized by Darwin.

TRAPS DEFINED

By specialization animal abilities to avoid these traps are disadvantaged.

Specialization Trap is where the animals of a species undergoes physical evolution to match their environment. This results in highly efficient but physically fragile animals who cannot cope with the changes in their environment that occur faster than they can adapt. This includes many species and may be a natural process. Loss of one non-adapting species makes room for another. This is consistent with Darwinian “Natural Selection”.

Genetic Bottleneck Trap results in reduced adaptability. When the population reaches a point of limited genetic variation there is insufficient capacity to adapt to environmental changes, such as climate change or new diseases.

Genetic Drift Trap results in lack of genetic diversity.

Declining Prey Base Trap is a broad based result of all the regional population of mutually entangled species with an extremely low general DNA variance.

Habitat Fragmentation Trap prevents the massive, free-roaming across territories. Without corridors, species cannot migrate to compatible environments. Conversely, species variants can immigrate into territories thereby promoting hybridization.

Daylight Hunting Trap Prevents animals from night hunting while hot, dry daytime conditions become intolerable

Human-Wildlife Conflict. Genocidal hunting, trapping and habitat destruction by farming and mining at industrial scale combine to make the ultimate trap.

CHEETAH

Cheetah are likely a distinct, naturally evolved species (Acinonyx jubatus) belonging to the small-cat lineage (Felinae). Their closest living relatives are the puma (mountain lion) and the jaguarundi. They cannot be naturally hybridized with other members of the Felinea because they are just too different. They split from the rest of the cat family tree millions of years ago and are the sole members of their own unique genus, Acinonyx.

  • They are not related to the Pantherinae (Lions, which started in Africa)
  • Cheetah existed secondary to late Pleistocene bottleneck extinctions 100K to 12K years ago.

Cheetahs are believed to have survived the two ice age catastrophic population bottlenecks that nearly drove the species to extinction. [1, 2] The root causes of cheetah’s problems were the two historic climatic bottlenecks plus their great speed. They were able to quickly run ahead of their competitors and ranged widely looking for prey. They out ran their competitors and extended beyond their base population. As small groups continuously separated from their peers they formed new island clusters. These founder effect groups were cut off from hybridization and experienced genetic drift. In summary:

  • They are not related to the Pantherinae (Lions, which started in Africa)
  • Cheetah existed secondary to late Pleistocene bottleneck extinctions 100K to 12K years ago.
  • Cheetah developed in the Asia/Americas and are related to domestic cats. 
  • Extremely inbred with depressed dominant traits.
  • They are all near identical clones: Completely depleted of variation in their genomes
  • They are experiencing founder effect. Africa is their CULMINATING POINT

LION

As a member of the big cat family these animals were born and bred in Africa. Modern lions diverged and began to leave its earliest fossilized footprints in East Africa around 2 to 3 million years ago. Through a combination of geographic refugia, extreme dietary flexibility, and evolutionary teamwork the lions thrived in the dry, ice free planes of Africa.

Cheetah and Lion – SUBJECTED TO time, relative humidity and LEVEL of adaptability

Over the last 20,000 years in Southeast Africa, climate shifts drastically altered humidity and ecosystems. The region swung between severe arid phases (like the Last Glacial Maximum) and the highly humid African Humid Period. In that period animal adaptability peaked. Generalist species thrived by adjusting to habitats, while specialists faced selective extinction. [1, 2, 3, 4] Some mammalian species failed to track their preferred climates over the last several thousand years. The failure to either migrate or adapt quickly may be their obstacle to survive. There is a significant time lag between climate change and species’ responses. These two cats were able to survive. The African Saber-toothed Cats, Scimitar Cats, Eastern Koppard and the Giant Cheetahs did not make it through the last 50,000 to 10,000 years.

Below is a four-column table of paleoclimatic and evolutionary timeline outlining the historical shifts:[1, 2]

Time (Years Ago) [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]Relative Humidity (Z-Axis)Animal Adaptability & Response (Y-Axis)Environmental Context
20,000 – 15,000Very Low(Dry / Arid)High (Specialist Die-off / Generalist Shift)Last Glacial Maximum. Equatorial lakes dried, forcing animals to adapt to sparse resources.
15,000 – 11,500Increasing(Transition)Moderate to High (Adaptive radiation)Deglaciation. Climate instability introduced genetic variance and rapid adaptation (“variability selection”).
11,500 – 5,000Very High(Wet / Humid)High (Biodiversity Boom)African Humid Period. Savannas expanded, and water-reliant generalist species thrived and spread.
5,000 – 2,000Decreasing(Drying Trend)High (Behavioral Adaptability)Monsoons weakened, leading to progressive desertification and forcing animals/humans into complex, mixed-habitat strategies.
2,000 – PresentModerate / VariableHighModern climate regimes. Continuous micro-adaptations are documented, though global warming increasingly tests limits.
Table 2. Variables and Environmental Context

This is the scenario of failure to survive, the theory should be called “THE THEORY of SPECIALIZED EXTINCTION” The tenants of this are

  • Reproduction with wide ranging genetic adaptability
  • Environmental change
  • Differential reproduction based on past environments
  • Extinction by environmental change

THE EFFECTS OF THIS ON PEOPLE TODAY

A very small hominoid population (likely Homo heidelbergensis or Homo erectus) expanded before 900,000-800,000 years ago. It underwent a massive glacial bottleneck which lasted for 100,000 years. The population was reduced to ~1200 individuals. This lengthy event killed off so much of the population that it irreversibly reduced the genetic diversity of the species. The effects of that have persisted until today. Even though chimpanzees and gorillas might look similar to us, they have many more times the genetic diversity within their species than humans.

CONCLUSION:

We can conclude that developing survival strength through unique specialization may be a death trap. To do this we followed cheetahs and lions as they adapt and survived through the last 20,000 years. There was an entire eco system which followed the same path. We should pay more attention to the generalists. Survival by adaptation to environmental change is more advantageous than specialization. Ability to change our environment may be our only survival option.

In our next posting (Exploring Animal Adaptability in Southeast Africa) we will try to project the future of the fauna for the next 50 years. See you there !

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REFERENCES

uhttps://www.science.org/content/article/carnivorous-ballet-helps-cheetahs-coexist-lions

uhttps://www.wildlifenomads.com/blog/cheetah-facts/

uhttp://www.macroevolution.net/natural-selection.html

Adaptive introgression

uhttps://evolution.berkeley.edu/evo-news/will-evolution-doom-the-cheetah/

uhttps://evolution.berkeley.edu/triggering-adaptive-radiation/

uhttps://evolution.berkeley.edu/evolution-101/macroevolution/

# Cheetah #lions #traps #genetic drift #bottleneck #adaptability #evolution #environment #founder effect #survival

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Adaptations of Cheetahs and Lions in Shared Habitats -Part 2

Lion lying on a mound with cheetah running in the background during sunset
Lion lying on a mound with cheetah running in the background during sunset
In this savannah sunset illustration the lion rests calmly. The cheetah dashes across the plane. What is the reason for these differing behaviors? (Find the answers below.)

INTRODUCTION

The purpose of this posting is to show how these two animal species have evolved, adapted and competed in the same environment. Have you seen to previous post in this in the series? Glacer and Plate blog. Cheetah and lions are superficially similar but so different in their behavior and genetics. Their behaviors may have determine their ultimate fates. This is part 2 of a series on adaptation and survival in Southeast Africa. This portends the future of two species of cats. I used these beautiful animals as an analogue to all animals in all environments.

More vocabulary: Founder effect, Genetic drift. Evolution

THE CATS

A cheetah standing in tall grass, looking back at the camera with a relaxed expression.
Cheetah
A male lion resting on green grass, with a full mane and an alert expression.
Lion

CAT SPECIFICATIONS (Table 1.)

Wt. ——————— 35 to 60 K

  Life span ——————12 yrs

  Female mature —in 24 mos.

  Mating season —-12-month

  Gestation ———— 90 days

  Litter size —————- 3 to 5

  Cub mortality rete ——95%

  Vocalization ———-Limited

  Speed ———– max120 K/h

  Social ——————–Solitary 

  Territory ————- 777 sqKm

Wt. ————————-120 to 225 K*

  Life span —–8 to10 -12 to 17 yrs

  Female maturity  —-36 – 48 mos.

  Mating season —————estrus*

  Gestation ——————–110 days

  Litter size ————————1 to 4*

  Cub mortality —————60-70%*

  Vocalization  ———-4 stages body language & sent trails

  Speed  —————————–50 kph

  Social  ————-pride or coalition*  

Territory  ——————– 1000 sqKm*

The lions and cheetah are planes creatures that feed on migrating animals. Their prey population feeds on grass. Without predictable rain there is no grass. Without water, grass and prey the predators must range widely for hunting or die. The wider their range the more isolated they become.

Here is how the Cheetah compares to the Big Five cats.

Cat Native regionAve. WeightAve. Speed mphAve life span yrs
LionAfrica and India420 lbs (male)
280 lbs (female)		5015-16 (female)
8-10 (male)
LeopardAfrica, Asia, Russia, India68 lbs (male)
51-60 lbs (female)		3612-17
CheetahAfrica, (Iran ?)46-16050 – 8010~12
JaguarAmericas120-2105012-15
Puma (Cougar)Americas120-220 lbs (male)
64-140 lbs (female)		40-508-13
TigerIndia (Asia)200-680 lbs (male) 140-370 lbs (female)30-408-10
Table 2. Specification of large cats

CHEETAH BEHAVIOR

It is not difficult to see the vulnerability of the cheetah. From Table 2, you can see that they are the smallest, shortest lived, and least distributed animals of the group.They are not one of the big cats. Additionally, they are solitary animals with the lowest cub survivability. Cub mortality is high. Up to 90% of cubs do not survive to three months due to predators like lions and hyenas. Do they really belong in Africa?

A cheetah standing in tall grass, looking towards the camera with a backdrop of green foliage.
Sleek proportioned lone cheetah hunting for prey.

A cheetah sitting in tall grass, looking back towards the camera.
Lone Cheetah with successful hunt constantly checking for other predators like lions and hyena who may steal the catch. She has no group to help like lions who hunt with the pride. Her keen eyes and great speed would not be an advantage for hunting at night.

Cheetah females reach sexual maturity at 18 to 23 months and breed year-round.  Pregnancy lasts approximately 90 days. They birth 3 to 6 cubs in a hidden den.

A group of cheetahs lounging on dry, sandy ground, surrounded by sparse vegetation.
Very unusual cheetah mother with three nearly full grown cubs lying under a tree in midday sun. With cub mortality rate at 90%, she has been a very successful provider. Soon they will separate leading to solitary lives; meeting occasionally; socializing only for mating.

Their obvious advantage is their speed. This advantage is only useful when there is sufficient space to reach that speed. They are planes creatures that have semi-retractable claws and less flexible ankles. They rarely find use for trees. They are also very quiet animals compared to lions. They lack the specialized larynx required to roar thus limiting their long distance communication.

LION BEHAVIOR

Lions are truly one of the Big Five cats.Their size, distribution and longevity are characteristics that are collectively superior to any of the others. Additionally, they have a very structured social community. They behave as a group when hunting thus improving the survival of the individual. They are polygamous during their estrus period. Gestation is 108 to 110 days producing 1 to 4 cubs. Cub mortality is high (often up to 60-76%). A new lead male cat will kill cubs in the pride from defeated pride leaders. They are planes creatures that are heavy and lack flexibility finding no good use for trees.

Two male lions resting in a grassy area, with one lying on its side and the other resting in the background among bushes.
Adult male lions rest after consuming their fair share of the hunt provided by the female. These are probably siblings.

A group of lions resting among tall grasses and bushes in a natural habitat.
Young adult lions from various mothers in the pride sitting in the shade waiting until the dominant female to signal for them after a successful hunt. They continue this social behavior throughout life.

A lioness standing gracefully in tall golden grass, looking towards the viewer in a natural habitat.
Lead lioness scouting the hunting territory without help and without her litter to care for.

A lioness yawning while lying on the ground in a grassy area near water.
Vocalization; Roar
A lioness lying in tall grass, displaying a growling expression.
Growl, grunt and chuff

Completely ignoring the automobiles around them this lion couple use scent and body language behavior preliminary to mating .
A lion resting on a tree branch surrounded by bare branches and green foliage in the background.
WHAT ! This is not the typical lion dehavior. Maybe we should have called the ladder fire-truck to bring him back down.

Two lions resting on the ground in a grassy area, surrounded by fallen logs and sparse vegetation.
Sleeping is what they do best. Like most cats, they are twilight/nocturnal hunters. Note the social contact even while sleeping.

EFFECTS OF HUMAN BEHAVIOR

After development of farming and increasing population growth, especially during the last two hundred years has dramatically exploded. Humans have established farms on arable land. Water has been diverted to the farms. Fencing and other defense measures have been erected. Native undomesticated animals from the naturally undeveloped land have been blocked from ingress into areas reserved by humans. Animals living in the wilderness are hunted to suppress their population, to be taken as trophies, killed by wars and industrialization and by obstruction of their migrating and hunting corridors. These have divided and isolated them into small unconnected groups.

SPECIES TRAPS

Isolation dilutes the population and requires the smaller groups to develop as “founders” of a new group. The isolated group becomes inbred risking a genetic drift death trap.

CONCLUSION

The behavior of these two cat species is extraordinarily different. Behavior and size differences are the key to their success despite the identical competitive demands. Both use the same territory and face the same weather, habitat and human exposure. Which do you believe is the most successful? Why?

See the next installment in this series to understand the other “traps”.

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# lion, #cheetah, #behavior, #Africa, #traps, #farming, #habitat #founder effect, #isolation, #genetic drift, #evolution

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Glacial Formation and Plate Tectonics Influence Species Survival in Africa – Part 1

Part I – Tectonics, Glaciers and Time

A few zebras and wildebeests grazing in the desert of the Ngorongoro Crater of Tanzania, with two safari vehicles in the background kicking up dust.
Fig. 3 Ngorongoro Crater in Tanzania, 2025 desertification

Introduction

The terrestrial forces of tectonic plate movement, ice ages and volcanic activity, together have changed the earth like no other forces except collision with extraterrestrial bodies. Southeast Africa has strategically benefited from these earth changing forces. This can be seen in the generation of a widely varied collection of mega and micro fauna and flora like no other place.

A panoramic view of a vast green landscape with patches of water, hills in the background, and a clear blue sky.
Fig. 10 The Ngorongoro 5 years ago.

The introduction picture shows a 7 zebras and 5 wildebeest in the Ngorongoro Crater. We went there using safari vehicles in 8/2025. The only road was made of irregular stones, ruts and dirt. Driving was difficult. Visibility was obscured for hours by dust as we drove across the crater. It is the caldera of the worlds largest above water volcano that was active 2.5 million years ago. It was famous for its wildlife. The image shows the greatest concentration of animals which we encountered along the way. To say that it was disappointing is an understatement. Fig. 10 comes from a posting on the internet.

Changing forces

Today we can see that the forces are changing. Tectonic plate is the slowest acting force acting in the level of hundreds of millions of years. And yet its rate and direction of movement can change dramatically in regions. This may be caused because glaciers and ice shelves are reduced. Glacialization operates at more rapid rate than plate movement with an effective speed measured in thousands of years. As the ice melts the weight of the water is more evenly distributed to the oceans thus altering the plate movement location and location of volcanic activity. Notably, the rate of vulcanism is unchanged. Volcanic ash, carbon dioxide and sulphur and gases are insignificant when compared to human activity. Anthropogenic CO2 emission for 2010 is estimated to be about 80 to 270 times larger than the respective maximum and minimum annual global volcanic CO2 emission. The results of action and reaction of human intervention parallel a cause and effect interference with historic geologic cyclical behavior. This may be the root cause of two possible effects of biological changes which are currently occurring. Survival of existing species is in decline. Generation of new species has slowed. This series of postings uses a contrast of two cat species, lions and cheetahs in Southeast Africa. Study of these species is intended to form a foundation for understanding how the change in the forces drive the current ecological conditions.

These four blogs are the result of thoughts and interpretations based on our latest safari to Africa that included Kenya and Tanzania. This was not a high-end trip. Instead it was a road trip to some of the lesser visited sights and it was during a period that was unexpectedly dry. I was particularly interested in the survivability of two well recognized cat species. The lions and cheetahs are two very different genus of predatory cat species at the apex of the food chain.

VOCABULARY

The vocabulary in these post also include several technical terms that apply to our discussion. For definitions, follow their links. Genetic drift, founder effect, gradualism, saltation, adaptive introgression and hybridization.

A close-up of a cheetah licking its lips with a blurred grassy background.
Fig 1. A distinction of genus is the outstanding characteristic to be followed in this series. Cheetah are from the genus Acinonyx while Lions are of the genus Panthera. They are not genetically related.

Let’s look at the driving forces and their results. The following charts show the approximate location of the Great Rift Valley region in Southeast Africa. This is a massive geologic event which is actively happening as we watch. The continent is splitting the eastern quarter of the continent off the main body. This gigantic split has created a huge valley that will someday be filled with ocean. It is accompanied by volcanoes, earthquakes, lava flows and uplifting plateaus.

GLACIAL REBOUND

From the last two glacial periods, 21,000 and 13,000 years ago, the continents are still recovering. The ice pack at the poles still hold the last remnants of that ice age. One result of this diminishing ice can be seen in the African desertification. The Sahara and Kalahari deserts are the result of the last ice age. When the poles melt and the Rift Valley floods the main portion of the African continent will recover. The deserts will bloom and the chronic drought in Africa will be concluded. The new continent will be created east of the Rift Valley. Migration may reverse. It just takes time. Never-the-less, the adaptable survivors will prevail.

Vast desert landscape featuring a rocky outcrop with vegetation atop, surrounded by dry, arid terrain and distant hills.
Fig.2 Olduvai Gorge in Tanzania, the Louis Leakey campsite, desert landscape

ECOLOGIC BARRIERS

As a result of the climatic changes, geographic barriers emerged. These are called Walls and they divide Africa into three eco regions.

These include the Saharan desert, the sub Sahil West-Africa separated from the Sahara by the line called the wall called the Sahil and East-Africa with Great Rift Valley, Fig.4, separated from wast Africa by the Great Wall of mountains.

The Great Walls of Africa limit the direction of animal migration and isolate the wildlife. This isolation has a double effect on all life forms by promoting speciation but also risking the compromises of genetic drift. In Fig. 5 the Sahil, shown as a green line, is the wall created by the Sahara. The Great Wall of mountains shown as blue line of Fig.5 parallels the Great Rift valley. Note that the regions of Kenya and Tanzania, Fig. 6 outlined in blue, are in high arid, desert risk locales.

MIGRATION

Through the two Great Walls there are narrow gaps called “bottle necks” . These geographic locations limit commingling and migration of species. These are the few areas through which animals can migrate. Except for the Nile river flowing through the Great Rift valley none of these areas follow the seasonal north-south wet weather patterns nor a river flow to another land mass. The access to Eurasia from the generative basis of Africa is through the three bottle necks of the Straights of Gibraltar, the Nile river delta and the Straight of Bab Al Mandeb. During the last 12,000 years the shallow Nile river delta crossing has been the least treacherous.

Mov. 1 Wildebeest migrating northward following the water and new grass. Lions, Cheetah and other predators follow the prey.

The illustration Fig. 7 is a conceptualization of the most direct routes for migration. Interestingly the Great Migration for animals from Africa also follows the projected route for hominoid migration. Mov.1.

Map of the Great Rift Valley and its geological features, including the Eastern Rift, Western Rift, and surrounding plates in East Africa.
Fig. 4 Location of the Great Rift Valley shown as the purple area in the red bracket. The insert shows the tectonic plats promoting the rift.
Map of Africa with highlighted Nile River, showing elevation variations in the southern region.
Fig. 5 The Great Wall of mountains and volcanoes west of the Rift are marked in the blue bracket. The Sahil marked in green, is the sub Saharan line south of the desert. The Great Wall and the Sahil are Africa’s migration barriers.
Map of Africa showing different risk levels for a specific factor, with regions colored in green, yellow, orange, red, and gray, indicating low to very high risk.
Fig. 6 Sub Sahil desertification is below the Sahara and is a high risk for drought. The light blue outline defines the Great Migration area. This area is at moderate drought risk.

The illustrated route could be followed in both directions as driven by climate change and the paths of migration of predated species sought after by the apex predators. As the glaciation advanced or retreated these routes would have water which would support grasses, insects, herbivores and carnivores. The Nile is the only north /south river. It flows to the Mediterranean through the Great Rift valley. Following the Valley waterway this leads to the choke points to the Eurasian continents. Following the east west routes of the Congo River, the Niger River or the Zambezi River leads to migration potential but dead ends at the two vast oceans.

Map of Africa showing various river basins highlighted in different colors, with a prominent pink line indicating a geographical feature.
Fig. 7 This is a conceptualized path for the bidirectional migration routes shown in red overlying a map of Africa.

We will follow two cat species which are the result of adaptations after the last Glaciation period. Panthera contains the largest number and variety of living members of the cat family. There are five living species: the jaguar, leopard, lion, snow leopard and tiger. It contains the five living species of “big cats” capable of roaring. Cheetahs belong to a completely different biological genus (Acinonyx).  They cannot roar, have distinctly different anatomy, including semi-retractable claws for high-speed traction and a unique, lightweight skeleton

A collage depicting six types of lions with labeled names: Transvaal Lion, Congo Lion, West African Lion, Nubian Lion, Southwest African Lion, and Asiatic Lion.
Fig. 8 Gross view of lion subspecies
An infographic displaying the four living cheetah subspecies: Southern African cheetah, Northeast African cheetah, Saharan cheetah, and Asiatic cheetah, along with their scientific names, distribution areas, and conservation statuses.
Fig. 9 Gross overview of cheetah subspecies

Continue to follow this amazing story of Earth changing forces. See the combination of struggle, adaptation and survival of life that sweeps across the planet through hundreds of thousands of years. Learn about the unique capabilities and risks to the Cheetah and the Lions. Because we are part of this great drama, you may use this knowledge to anticipate our future.

All photographs created by John Knapp

References:

Mitogenomic analysis of the genus Panthera

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#glacers, #tectonic, #migration, #Africa, #Nile, #walls, #barriers, #corridors, #cheetah, #lion, #genetic drift, #founder effect, #Ngorongoro, # Olduvai, #cats #wildebeest,

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Fluorescent Photography Highlights Coral Health Issues

Introduction

This section presents a structured account of observations made in the reef system surrounding Roatan, Honduras. This is not unique to this location but the conditions are consistent with other findings in the reef systems of the Gulf. These findings and identifications are based on personal experience and the efforts of amateur naturalists. These observations extend a continuing investigation into coral reef health, previously initiated in the post titled “Death in Paradise.” See past posts. This is presented is made to support my application to the Water School at Florida Gulf Coast University to study for a Master’s in Environmental Sciences. The goal is to learn more about coral reefs, coal polyps, and polyp disease.

These observations are findings revealed by white light flash photography during the day and ultra blue illumination lighting with amber filtration to show fluorescence at night. It was not possible to superimpose photos of identical structures due to instability caused by rough sea conditions.  

IMAGES WITH FLUORESCENT LIGHT

Figure 1: Fluorescent Green Goniopora Coral

Photographed using an ultra-blue light source and an amber filter, this image depicts a fluorescent green Goniopora coral, also known as the flowerpot coral. Under white light, these corals appear dull brown, but under blue or UV light, their fluorescent pigments—produced by dinoflagellate algae within the polyp—create a vivid green glow. This species is a Large Polyp Stony (LPS) coral, notable for long, fleshy polyps resembling a bouquet of flowers. The coral may belong to either the Goniopora or Alveopora genus, which can be differentiated by tentacle count—Goniopora polyps have 24 tentacles, while Alveopora have 12. 

A vibrant underwater scene showcasing colorful coral formations illuminated by blue and green light.
Figure 1. Photo with ultra blue light source and amber filter on camera

Figure 2: Tubastraea faulkneri (Orange Cup Coral)

This image, also captured with ultra blue lighting and an amber filter, shows a coral likely to be Tubastraea faulkneri, the orange cup coral. Typically orange, this species may display green or yellow variations under specific lighting. Tubastraea faulkneri is a non-reef building LPS coral, often inhabiting cryptic environments such as caves, overhangs, and shipwrecks. Notably, it is a zooxanthellate carnivore, lacking symbiotic algae and feeding by extending its polyps at night to capture plankton. Its distribution spans the Atlantic Ocean and Caribbean Sea with origins in the Indo-Pacific.

Close-up view of a vibrant coral formation with green and blue hues, surrounded by underwater vegetation.
Figure 2. Photo with ultra blue light source and amber filter on camera

Figure 3. Montastraea cavernosa (Great Star Coral)

This photograph features a coral with a bright green base and purple-rimmed polyps or tips, possibly a Neon Green Cyphastrea, Montastraea cavernosa (Great Star Coral), Goniopora, or Fimbriaphyllia (Frogspawn/Hammer coral).

Close-up of vibrant green coral polyps with a dark background, showcasing intricate textures and shapes.
Figure 3: Neon Green Cyphastrea or Similar Species

Figure 4.

An image taken with blue light and an amber filter shows a central region of dead coral polyps highlighting loss within the colony.

Close-up view of a vibrant green coral with glowing features, showing intricate patterns and textures against a dark background.
Figure 4: Central Area of Dead Coral Polyps

Figure 5: Montipora Coral (“Shamrock Monti” or “Rainbow Montipora”)

This photo reveals a Montipora coral, recognized for vibrant green polyps on a purple or blue base under actinic lighting. As an SPS coral, it displays a bumpy, encrusting growth form and is valued by reef keepers for its resilience and fast growth. The coloration varies with lighting conditions, often intensifying under different spectrums.

Close-up of vibrant green and purple coral with intricate details, dated 2026 1.1.
Figure 5. Photo with ultra blue light source and amber filter on camera

Figures 6–8: Disease Progression in Montipora Coral

Figure 6 shows a Montipora coral under blue light. Figure 7, an enlargement, illustrates zones of normal tissue, dysfunction, and tissue loss, suggesting the possible progression of Stony Coral Tissue Loss Disease (SCTLD). Figure 8 highlights an encrusting Montipora structure glowing green under blue/UV light, with blue/purple areas indicating disease and tissue death.

Close-up view of vibrant green and purple coral formations under UV light, with a date overlay of '2026 1.19'.
Figure 6. Photo with ultra blue light source and amber filter on camera
An underwater image showing coral with zones labeled 'Tissue Loss Zone', 'Transition Zone', and 'Normal', illustrating coral health variations.
Figure 7. This enlargement of the Figure 6 image shows the possible progress of SCTLD on the surface of the coral reef. Indicated are the various zones of normal, dysfunctional and tissue loss zone.
Close-up view of a vibrant, textured coral surface illuminated with green and purple hues, showcasing intricate patterns and details underwater.
Figure 8. Photo with ultra blue light source and amber filter on camera

Figure 9: Surviving Fluorescent Polyp Coral

This image depicts a fluorescent polyp coral barely surviving amidst lifeless surfaces devoid of reflective polyps.

A close-up image of colorful coral under ultraviolet light, showcasing vibrant hues of blue and purple against a dark background.
Figure 9. Photo with ultra blue light source and amber filter on camera 

Figure 10: WWC Electric Daisy (Stylocoeniella armata)

This specimen is a small polyp stony (SPS) coral, forming a dense, textured mat and known to compete with other corals upon contact. (often called a “thorn coral”).

Close-up of a colorful coral with bright green and pink dotted patterns in an underwater setting.
Figure 10. Photo with ultra blue light source and amber filter on camera

Figure 11: Maze Brain or Worm Brain Coral

Likely a Platygyra or Favia species, these coral display neon green and purple fluorescence due to specialized proteins. It forms dome-shaped colonies with maze-like channels and can be semi-aggressive, extending sweeper tentacles at night. Nutrition is primarily derived from symbiotic algae.

Close-up of vibrant green coral with purple patterns under blue lighting, showcasing underwater marine life.
11. Photo with ultra blue light source and amber filter on camera Figure 

Figure 12: Encrusting Montipora or Cyphastrea

This image shows an encrusting coral, possibly Montipora or Cyphastrea, with green and purple fluorescence. The coral spreads as a thick mat, but species identification requires microscopic skeleton examination.

Close-up of vibrant coral formations illuminated with blue and green hues under ultraviolet light.
Figure 12. Photo with ultra blue light source and amber filter on camera

images WITH White light with photoFlash

Figure 13: Mustard Hill Coral or Related Species

Using white light flash, this photo captures a yellow, bumpy stony coral, likely a mustard hill coral (Porites astreoides), star coral (Orbicella spp.), or brain coral. The coral features a massive, uneven surface covered in small polyps. An encrusting goup of organism is growing in the cavity of the stony skeleton devoid of polyps. These corals are native to shallow, warm Caribbean reefs and play a critical role in reef-building.

A close-up view of a textured yellow coral formation with green algae growth visible in its center, set against a blurred underwater backdrop.
Figure 13. Photo illuminated by white light flash.

Figure 14: Diseased Brain Coral

This image shows a brain coral suffering from disease with evident demineralization and erosion.

Close-up of a large coral formation on the ocean floor, surrounded by diverse marine life and coral reefs.
Figure 14. Photo illuminated by white light flash.

Figure 15: Boulder Brain Coral (Colpophyllia natans)

This photograph shows Colpophyllia natans, a common and large brain coral in the Caribbean. The coral displays wide, meandering ridges and valleys with contrasting colors. Fine, narrow lines (septa) running from ridges to valleys help distinguish this species. Boulder brain coral forms massive colonies and is a dominant reef-builder in shallow environments. It is currently considered vulnerable due to climate change, acidification, and disease. The central area in the image shows disease-related polyp loss.

A close-up of a brain coral showcasing its textured surface, with an area of orange and red coloration and some algae growth, set against a sandy ocean floor.
Figure 15. Photo illuminated by white light flash

Figure 16: Symmetrical Brain Coral (Pseudodiploria strigosa)

This image likely features a Symmetrical Brain Coral, forming a dome-shaped colony with convoluted valleys and rounded ridges. The coral is yellowish-tan with darker areas, lacking the groove found in some related species. Pseudodiploria strigosa is widespread in Caribbean shallow waters, slow-growing, and foundational to reef habitats, supporting symbiotic algae (zooxanthellae) for photosynthesis.

Note the irregular loss of polyp growth on the surface of central and right side of the specimen. This is consistent with the result of spreading SCTL disease. Additionally, the adjacent coral is completely overrun by the opportunistic algae.

Close-up of a coral formation covered in algae on a reef, with a date stamp in the corner.
Figure 16. Photo illuminated by white light flash

Figure 17: Lettuce Coral (Agaricia spp.) and Codium Macroalgae

The image features a ruffled lettuce coral (Agaricia spp.) (Agaricia agaricites or Agaricia tenuifolia} and green branching macroalgae (Codium). The coral forms undulating plates or branches, often yellow-green or brown. 

Substantial polyp loss and algal overgrowth are evident. The accompanying Chlorophyta Codium macroalgae, known as green sea fingers, have a distinctive branching structure absorb nutrients like nitrates and phosphates from the water. 

Close-up of green coral and marine plants on a rocky substrate, showcasing intricate textures and vibrant colors.
Figure 17. Photo illuminated by white light flash

Figure 18: Field of Broken Coral

White light photography reveals an expanse of broken, lifeless coral, a few healthy finger corals, and one small fish.

An underwater scene featuring colorful coral reefs and a fish partially hidden among the coral.
Figure 18. Photo illuminated by white light flash.

Figure 19: Pillar Coral Disease Progression

This image of one of the pillar coral species shows a pattern of disease spread from the bottom to the top where the top appears relatively healthy in this daylight exposed photograph. The lower two thirds are bare of polyps. This area has been overrun by algae. 

Underwater image of a brownish coral formation surrounded by green and colorful marine plants.
Figure 19. Photo illuminated by white light flash

Figure 20:

This image of a collective variety of stony corals in various states of disease progress.  A patch of polyp covered coral is on the lower left. Exposed stone is seen in the central area. The remainder is covered by several opportunistic algae species. The images in the distance are overrun by SCTLD and covered with algae.

Underwater coral reef with various textures and green plants, captured in natural lighting.
Figure 20. Photo illuminated by white light flash

Figure 21: Snakelocks Anemone (Anemonia sulcata/viridis)

The organism shown in Figure 21 is likely a Snakelocks anemone. This finding is new to me. It is an invasive species out of its eastern Atlantic / Mediterranean range. Its tentacles are long and flowing, colored green, grey, or light brown, and tipped with violet or pink. Symbiotic algae embedded in its tissues supply nutrients through photosynthesis. Predatory by nature, it uses stinging cells to immobilize prey, although its sting is mild for humans. There were no observable mutualistic anemone fish. This supports the suggestion that these are indeed invasive.

A vibrant underwater scene featuring a green sea anemone with long, flowing tentacles, surrounded by colorful coral and marine plants.
Figure 21. Photo illuminated by white light flash

Figure 22: Chocolate Brittle Star (Ophiuroidea cinereum)

The organism in this image is likely a brittle star, endemic to the Gulf of Mexico and known as the Chocolate Brittle Star.

A close-up view of an octopus on the ocean floor, surrounded by rocks and marine vegetation.
Figure 22. Photo illuminated by white light flash.

Figure 23 – 24: Finger Coral (Porites spp.)

This image displays a branching finger coral, common in the Caribbean, with short, blunt, finger-like lobes. Porites typically have thicker branches, while Porites furcata features thinner, rounded tips. Both can appear green, yellow, or greyish, with color and growth form influenced by habitat conditions.

Close-up view of colorful coral formations underwater, showcasing green and yellow hues and various textures.
Figure 23. Photo illuminated by white light flash

This enlarged view of Figure 23 depicts relatively healthy coral with no signs of Stony Coral Tissue Loss Disease (SCTLD).

Close-up view of colorful coral formations under the sea, featuring vibrant green and yellow hues.
Figure 24  This enlargement image of Figure 23 shows relatively healthy coral without signs of SCTLD

Conclusion:

All stony coral varietals seem to be subject to the same disease. The progress of the disease is unchecked and is advancing. The algae may be flourishing because of increased nutrients in the areas resulting from decomposing polyps and because they are optimizing an echo-niche left vacant by the polyps. The algae are not rebuilding the reefs. The fish population is also in great decline probably secondary to the degradation of the reefs.

Personal Commentary and Reef Health Summary

After thirteen dives across six reef sites in Roatan, Honduras, the overall impression was a declining reef system. Notably absent were turtles, large fish, sharks, lobsters, tunicates, and nudibranchs. The reef, once vibrant, now stretches for miles as broken, gray-brown expanses covered by algae. Invasive species observed included lionfish, a single anemone, Tubastraea faulkneri coral, and two spiny urchins. Only small fragments of some coral species persist, with no Elkhorn, Pillar, or Staghorn forms present and much of the previously widespread fluorescence now largely gone. While some sponges and fans remain, the images presented here document the few surviving patches of live coral polyps amid non-fluorescent, algae-covered stone skeletons.

Plan for remediation:

Problem Statement

The Stony Coral Tissue Loss Disease is relentlessly advancing and destroying the vital surface of the stony reefs. The cause of this disease is not yet discovered. This is a continuing catastrophic event. Work is in progress and includes maping, determining the progress rate and direction of spread. The causality and cure are not yet determined.

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4 responses to “Fluorescent Photography Highlights Coral Health Issues”

  1. Cindy Avatar
    Cindy

    You examined so many varities of coral. It is very disheartening to learn how badly the disease is treating the reef. If you can determine the primary cause that will be wonderful, and a first step to treatment.
    Cindy

    1. John Knapp Avatar
      John Knapp

      There is so much unknown about diseases in the ocean. This one is devistating and the cause is unknown. Hopefully the project that I planned will make some difference.

  2. Manuela Klopper Avatar
    Manuela Klopper

    It is devastating seeing the reefs dying and nearly everything else with them. I stopped scuba diving some years ago and I am happy to have seen beautiful reefs in many parts of the world.

    1. John Knapp Avatar
      John Knapp

      Yes. Caribbean diving was my first salt water experience now I am reluctant to return. I am so anxious to see some reversal of marine life there.

The Future of Florida’s Wilderness: Rewilding and Restoration Part 1/6

Let’s get serious about the Florida environment. This first posting outlines the three major issues regarding the future of Florida, especially Southwest FL.

The title image is a view of Estero Park Preserve. I added the sign graphic.

  • Scenarios for the future
  • Risk/benefits of rewilding
  • Consequences of species intra- and interdependence

For centuries Florida has been famed for its vibrant and diverse wilderness. It is a living repository of species drawn from the Caribbean, the Gulf, and subtropical America. Yet the past two hundred years have seen this unique ecosystem ravaged. People introduced non-native species, relentlessly homesteaded, and transformed the landscape for agricultural and urban development. The result is a wilderness in crisis. It is fragmented, altered, and teeming with exotic species that out compete or hybridize with the native flora and fauna. This document series outlines a strategic plan for the future of Florida’s wilderness. It is an examination of possible scenarios. It presents the risk/benefit calculus of rewilding. It supports species interdependence. It has a step-by-step outline for ecosystem restoration.

Definition: Rewilding is comprehensive, often large-scale, conservation effort focused on restoring sustainable biodiversity and ecosystem health. (institute of Rewilding)

A landscape in Southwest Florida showing dense vegetation, including shrubs and dry grass, representing the ecological challenges faced in the region.
This is one example of tens of thousands of citrus groves abandoned and overrun by invasive species.

A landscape view of Florida's wilderness featuring tall grass and scattered trees, highlighting the need for ecological renewal.
Babcock ranch preserve undeveloped wet prairie
A lush, green forest scene in Southwest Florida featuring a variety of trees and underbrush, showcasing the region's rich biodiversity in its natural state.
Babcock ranch preserve undeveloped upland wood

Major Scenarios for the Future of Florida’s Wilderness

Florida stands at a crossroad, with three major possible scenarios for the trajectory of its wilderness:

  • 1. Continuance as a Species Repository: For millennia, Florida has served primarily as a bank of species. Rather than an origin point for evolutionary novelties it has been a major exporter of species elsewhere. Rewilding under this scenario would focus on maintaining and nurturing native species. It preserves the region’s role as a living archive of biodiversity.
  • 2. Generator of New Species: The widespread introduction of similar but non-native species—both intentionally has created a dynamic environment. Hybridization and adaptation of ornamental and agricultural plantings will unintentionally transform Florida into a generator of new species. Unpredictable and unintentional ecological outcomes will result.
  • 3. Degraded Ecosystem: If rewilding efforts fail or are mismanaged, Florida will become an ecological cautionary tale. With native species in decline invasive species will become rampant. Ecosystem services like water purification, habitat provision, and storm protection will severely decline.

Risk / Benefit Considerations in Rewilding

The imperative to restore Florida’s wilderness must be balanced by a careful analysis of risks and benefits. Rewilding, while promising, is not without peril.

  • Genetic Integrity: Simply replacing lost native species with physically similar, but non-identical genotypes can backfire. A non-native genotype may outcompete local species or fail to provide for dependent mutualists, causing cascading ecological harms. Cloning or propagating exact native genotypes minimizes this risk while preserving ecological relationships honed over millennia.
  • Ecological Compatibility: The introduction of new or “replacement” species may disrupt established mutualisms. They may also create new competitive dynamics while further destabilizing the ecosystem.
  • Proof of Concept: Any rewilding project must proceed through careful. It demands experimentation, trial phases, and rigorous review of existing literature. These will all be needed to maximize chances of success and minimize unintended consequences.

Intra- and Inter-Dependence of Species

Ecosystems are intricate webs with species depending on one another for food, shelter, pollination, seed dispersal, and countless other functions.

  • Physical and Genetic Identification: Restoration begins with precise identification of native species, both morphologically and genetically. This enables accurate matching of replacement stock and helps avoid mismatches that could undermine restoration.
  • Codependent Species: Many native species are mutually dependent. For example the relationship between native bees.; wildflowers or wading birds and wetlands. Successful rewilding requires restoration of these relationships, not just individual species.
  • Environmental Conditions: Beyond the species themselves, restoration must account for the specific environmental factors. Soil chemistry, water availability, fire regimes, and more allow these relationships to thrive.

These are the topics of the postings to follow

  • Review of State Key Initiatives
  • Structured outline for rewilding
  • Maximizing existing objectives
  • Marketing the concept for large scale rewilding of Florida
  • Call to action

SUMMARY

This is not just about legacy. This is your own quality of life; your own property value; your own cost of living. What are you thinking about when you don’t support initiatives, don’t press your representatives and spread invasive species? There are only three choices. 1. Fix it; 2. live with it as is; 3. abandon it and live with the consequences.

Let’s know your thoughts. Leave a reply jn the comment box below or start a thread in our discussion board.

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#rewilding #restoration #environment #risk/benefit #

Bauhinia and Hibiscus: A Comparison of Floral Reproduction

This posting is a response to the numerous hits made on a previous posting featuring the Non invasive Bauhinia tree. It seems that the interest lies in its reproductive nature. The purpose of this post is to improve the understanding of plant biology through comparative anatomy.

The title image shows the Bauhinia (blakeana ) on the left and the Florida native scarlet rosemallow (Hibiscus coccineus) on the right. I photographed the Bauhinia in the roadway median of our neighborhood. I photographed and display the scarlet rosemallow because it is such a stunning finding in the fresh water marshes of the Corkscrew Nature Preserve in SW Florida. It also shows that it is not a cultivar but it can self propagate without human intervention. Both plants are eye candy that must be appreciated in their out-of-door surroundings. In our community we have domesticated tropical hibiscus which are close relatives to the wild scarlet hibiscus

These two blossoming plants attract loads of attention. The Hong Kong orchid (Bauhinia blakeana ) and the cultivated tropical Hibiscus (Malvaceae) produce wonderful, flamboyant, visually attractive flowers. They are planted throughout our community. Additionally, these blooms have great staying power lasting for many months. Their flowering period stretches anywhere from eight to ten months, from September to June. They have, however, remarkably different reproductive powers. To reveal the secret of these two plants this posting compares the gross and micro anatomy of their two flowers.

A detailed diagram of a Bauhinia flower labeled with its anatomical parts, including bud, petal, sepal, stamen, pistil, ovary, style, and stigma, showcasing the flower's structure.
Bauhinia blossom with some pettals removed
Diagram labeling parts of a hibiscus flower including the stamen, ovary, style, stigma, petal, and sepal, accompanied by lush green leaves and a bud.
Hibiscus blossom with no petals removed

Gross and micro dissection reveals the major difference in the reproductive capacity of the these two perfect flowers. Dissection and microscopic examination of the ovaries shows that the hibiscus has ovaries while the bauhinia has no trace of ovules. It is unable to sexually reproduce.

Diagram illustrating the anatomy of a Bauhinia flower, highlighting its various parts including petal, sepal, stamen, anther, filament, ovary, style, stigma, and pistil. The text indicates that the flower is perfect but sterile, with no ovules or seeds.
This is a full dissection of the Bauhinia × blakeana blossom. Look at the top left images. You can see that under microscopic examination there are no ovaries within the ovary. This plant is infertile.

Anatomy diagram of a hibiscus flower, illustrating the components like the ovary, stigma, stamen, and petals, labeled with descriptions to explain its reproductive functions.
This is a full dissection of the Hibiscus blossom. Look at the top left images. You can see that under microscopic examination there are ovules within the ovary. This plant can produce seeds. It is fertile.

The five-petaled blossoms of Bauhinia plants are known as “perfect flowers,” because each individual bloom contains both female and male parts. Some varieties of the Bauhinia flower, such as the widely cultivated Hong Kong Orchid Tree (Bauhinia × blakeana), are known to be sterile. Bauhinia are monoecious, which means “single house”. This designation describes the dual sexual capacity in a single flower. The flowers can self pollinate or fertilize with pollen from another plant. The flowers attract pollinators such as hummingbirds, bees, butterflies, and more. Bauhinia × blakeana‘s sterility is due to its hybridization. Bauhinia blakeana is the result of conjugation of the very similar species Bauhinia purpurea ( Purple Camel’s Foot) and Bauhinia variegata ( Camel’s Foot Tree). Both of these are exotic species according to the Hong Kong Herbarium. The parent plants have partially overlapping flowering periods and geographical habitats, and the same range of bee and butterfly species as pollinators. Interbreeding Bauhinia purpurea and Bauhinia variegata is probable. The resulting triploidy of this plant has probably rendered this varietal sterile. The plants you see today are clones of the same flowers seen by Hongkongers more than a century ago. They are propagated asexually through cultivation of stem cuttings.

The Hibiscus is also considered a perfect flower which actually produces viable seeds. The hibiscus is a genus of flowering plants known for their large, showy flowers, belonging to the mallow family (Malvaceae). Fertilization of these plants is complex. Pollination may fail because of these five prerogatives.

  • Self-Pollination: Some hibiscus varieties are self-pollinating. This can make it difficult to cross-pollinate them.
  • Timing: Hibiscus flowers are only receptive to pollen for a short period, usually just a few hours.
  • Pollen Viability: Hibiscus pollen can lose its viability quickly.
  • Stigma Receptivity: The stigma needs to be receptive to pollen. The stigma, gateway to the ovarian, might not be receptive at the same time the pollen is viable.
  • Germination: Seeds take 12 to 24 months to bloom.

The hundreds of species of hibiscus are generated through human intervention of the pollination. Tropical hibiscus are propagated sexually from seeds or asexually from stem cuttings or plant division. In carefully controlled environments and with delicate, patient effort botinists have hybridized the tropical hibiscus to make hundreds of beautiful new varieties. The new plant varieties are propagated from cuttings or division to produced plants which are clones of their parents.

Illustration explaining hormonal fertility signals in plants during pollination, detailing four key hormones involved in the process.
In addition to timing, these four hormonal obstacles must be passed in the carpel for signaling a specific selection of pollen appropriate for germination of ovules in these species.

DISCUSSION of FINDINGS:

This is not a thorough scientific data collection. Three samples of blossoms from each of two trees were collected for a total sample size of six. All of the samples were made on the same day in April, 2020. There were no major local meteorological events for the year preceding this observation. There were no observations of the viability of the observed polled during this observation. Further study should be done to give this a high level of confidence of the conclusions.

SUMMARY:

In Florida the Bauhinia × blakeana and Hibiscus plants thrive and are found in almost all of the cultivated communities and household gardens. They are well tolerated but stable non-native species. Because of their reproductive limitations they are not invasive. We can feast our eyes on this banquet of form and color without fear of damaging the environment.

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#Bauhinia #Hibiscus #reproduction #flowers #invasives #anatomy #seeds #sterile #

This Spring, Explore SW Florida’s Unique Environment

You are invited to attend a series of three presentations this Spring, 2025. It is available only to residents of the Bonita Bay Community Association and their guests.The purpose of these presentations is to give information and encourage you to go.

This is a chance to explore the unique diversity of the SW Florida environment. Topics include our distinct surroundings, plants of special beauty, and our environment compared with other similar but globally distant areas. This presentation is also an opportunity to discuss these varied topics with John Knapp, author of Everglades Ark.

Topics and dates

Location

Community Activities Center: 3451 Bonita Bay Blvd., Suite #100.. Water and coffee included in attendance. No registration needed. Also see the schedule in the Bonita Bay publication Around the Bay

At the door there will be a $5.00 BBCA registration fee and, to help fund the Everglades Ark education effort, a $10.00 donation.

Questions ? Please call the Bonita Bay Community Association, Community activities, 239-390-5550.

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#lecture #Florida #ecosystems #flowers #comparison

Japanese Garden Types – Part 3 – Woodlands

The native woodlands are foundational for all other Japanese gardens. They have been revered for thousands of years as part of Shinto. They are geologically, ecologically, historically, culturally and economically important. The previous posts in this series have reviewed the cultural insights and history of the Japanese gardens. This is part three of a six part series on Japanese gardens. The purpose of this presentation is to focus on the value and management of the forests. Can these be applied to care of woodlands in Florida and the East Coast of the USA?

There are three garden types in Japan that include woodlands, food production gardens, and the classic traditional gardens. Here is a brief overview of the forests in the wilderness of Japan.

The feature image is typical of the countryside viewed from the cable car on the way to Mt. Fuji. It is mountainous and covered with a forest of predominantly gymnosperm trees.

The history of Japan has significantly altered the natural woodlands of Honshu. The wilderness is not as natural as expected. 75% of Japan is densely forested. Forty percent’ was planted by people. There is a deep and protracted use of the woodlands for lumbering. The giant shrines with statues of the Buddha are made of cedar and cypress harvested from the wilderness. Historically all of the major buildings and residences were built from local wood. Until the twentieth century no other materials were used.

No understory at altitude at 1/2 (4500 ft) of Mt Fuji
Shinto shrine in base of Mt Fuji park
Cyprus and Cedar tree forest

Deforestation Events

The forests were depleted of wood from three major events. There were two major event periods of construction which consumed whole mountains of wood. The first was during the castle shogun period the 1700’s. These included many square miles of defensive castles and associated residences for soldiers, civilians and commerce. Simultaneously, the residences and temples of the Buddhists were constructed. The second period was during the Edo and the Mejie eras. Edo construction focused on the new capital now called Tokyo. The third and period was the combination of the 1850’s through 1950. The forests were severely depleted as never before. This third period included deforestation for construction and devastation as a result of war.

Deforestation has an impact on the geology and ecology. Without the tree roots to hold the soil, earthquakes, floods, land slides with mud and rocks ensued. To restrain the soil trees were aggressively replanted with cedar and cypress with very little diversity. In 1954 The public was incentivized to plant even more. That incentive indirectly increased further deforestation of diverse native tree angiosperm hardwood species like the maple.

This had a further modern impact of construction lumber. Its value depends on good management of the trees. To grow straight, tall and knot free, the limbs need to be trimmed. To allow sufficient light and access to the trees the forest needs thinning. To be accessible to harvest, the slopes of the hills must be within the capacity of the power equipment. This is demanding work requiring a skilled and able labor force. The population of Japan is aging. The wage rate compared to other countries is relatively high There are insufficient foresters to develop an industrial timber crop. As a result of this, the trees are of questionable value. The monocultural nature of the crop also makes the forest susceptible to pests and diseases. The understory is sparse and not diverse. The wildlife is severely limited. To compete with imported lumber the method of management needs to be rethought.

1945. Tokyo reduced to ash
2024. Tokyo completely rebuilt in concrete

Spiritual Value of Old Trees as Seen in Art

Shinto regard of trees and forests is foundational. Recall that there has been a long veneration of trees which we described in the last posting. This value dates back thousands of years. They are assigned individual and group value as Kami spirits.

In Japan, old trees are venerated for their resilience, strength and power. Allegorically, they offer a bridge to the past. Both of these concepts are essential to the concept of Shinto. Blossoming trees are also highly regarded. Most notably are the spring blooms of the weeping cherry and plum trees. Autumnal trees with seasonal chromatic change in the leaves offer even more inspiration for artists.

Kano Masanobu, ~1550, This exquisite screen, ink on foiled paper is in the Tokyo National Museum
Suzuki Shōnen  1849-1918

Buildings for the Community Revering Forested Trees

The size of the remaining wooden buildings speak volumes about the mass of lumber needed for the temples, castles and residences of ancient Japan. The Great Buddha Hall of Tōdai-ji in Nara Japan is the world’s largest wooden building. It houses the largest cast bronze seated Buddha statue. It is only one of the few remaining giant Buddha halls. These images of notable wood structures do not truly capture their great size. Maintenance of these halls, palaces and castles is constant, expensive, and requires expert craftsmen and are paid for by donations. The remaining buildings are a small fraction of all of the original buildings that once existed.

Great Buddha Hall of Tōdai-ji in Nara. This reconstruction is only two thirds of the original building.
Senso-JI temple, Tokyo
Jansen-Ji temple, Kyoto, Japan
Senso-JI temple Pagoda, Tokyo
Matsumoto castle, Japan
Todai-ji Namdaimon, Nara, Japan
Nijo Castle, Kyoto, Japan

Private Wooden Buildings

The Gion district in Kyoto and the Yasaka-no To Pagoda has a high concentration of traditional wooden machiya merchant houses. This area was established 1300 years ago. Many of these wooden buildings date back to the Meiji period more than 150 years ago. Most of the original buildings were destroyed in the fire of 1865. In Kyoto those which were rebuilt were not destroyed in WW II. There were wooden structures like these in Tokyo. They were the norm and as you would expect, during WW II most of them burned. Only a few pockets of these remain. They were replaced with modern buildings made of steel reinforced concrete and glass.

Tokyo. Wood is protected from deterioration caused by dog urination. The curved barriers can be seen on the face of the structure
Kyoto. No barriers results in discoloration and acidic damage to the structure.

WW II post war reconstruction period and current state of woodlands

Trees by the numbers

Look at this hillside. At the lower level, below the green line, you can see the density of the tree trunks. There is no place for understory growth. This suggests over planting without selective tree pruning or thinning as is necessary for a healthy tree growth pattern.

The foliage distribution strongly overlaps the mountainous areas which we described in the first of this series on Japan. To better appreciate the distribution of trees in Japan, the following illustrations will show the varieties and locations in the island group. This underscores the limited accessibility to manage the growth or to commercially harvest the wood.

The distribution of trees is approximately 40% deciduous and 60% coniferous and evergreen.
This graphic is from “Forest and Forestry of Japan Textbook to Learn about Forests” . The Japan Forestry Association, “Forest zone of Japan”. Note our visited area is characterized as warmer temperature vegetation.

For more information on plants seen on this trip, please visit the Everglades Ark Epicollect database. to see more native trees and plants in seen on this visit. See observations numbers 422 to 434.

Reforestation:

There is a strong response to the tree management in today’s Japan. The forests of Japan rank third in the world for percentage of forest covered land. Modern management techniques including diversification of species are being applied and the use of local lumber is increasing.

Japan is now making a concerted effort to reforest and rewild their woodlands. Although this is a public works project and is government sponsored/funded it depends on community part time and volunteer workforce. It includes incremental reforestation using a variant of the Montreal process. This successful process has been widely applied in many locations around the world. The dedication and discipline of the people of Japan have made this do-it-yourself (DIY) project an example that could be followed here in Florida.

CONCLUSION

Forests continue to play an important part in Japan both spiritually and economically. Hopefully we can learn that over deforestation and questionable management can result in unintended consequences. The reversal of the untoward results can be costly, labor intensive and time consuming.

Next

In our next posting we will explore the productive gardens as farms in Japan. Later we will see the classic formal gardens

HERE ARE SUGGESTED TOPICS FOR the discussion board

Where does the art of bonsai fit into Japanese culture?

How would you manage the woodlands of Japan?

What can we learn from the Japanese woodland management experiences?

How can we use the Florida Master Naturalist program to encourage woodlands management in our own neighborhoods?

If you have visited or live in Japan please add to this description.

Is Japan competitive with the world in lumber production?

Reference texts:

•Japan, DK Eyewitness, Penguin House, Dorling Kindersley, 2000

•The Chrysanthemum and the Sword, Benedict R., Houghton Mifflin, 1946, 1957, 1967. 2005

•Judgement at Tokyo, Bass G.J., Alfred Knoff, 2023

•Zen Gardens, Masuno S., Tuttle Publishing, 2012

•Japanese Gardens Revealed and Explained, Chard R., Zenibo Marketing, 2013

•Japanese Stone Gardens, Mansfield S., Tuttle Publishing, 2009

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#gardens #Japan #Shinto #samurai #Buddhism #Shogun # culture #imperialism #history #philosophy #art #trees #

Stony Coral Tissue Loss Disease: Threatening Caribbean Reefs, Wildlife and Ecosystems

This is a follow-up publication on Stony Coral Tissue Loss Disease. It describes the findings in the coral reefs in the Cayman Islands during a week in mid April, 2024. The travel to the island was reasonably easy and the accommodations onboard the live-aboard cruise were good. The conditions of the reef life and tropical fish however was disheartening. We have a big problem.

The featured image was made from a view of the sunset from the port on Grand Cayman island. The sunset may be symbolic of the future diving in the Caribbean. I hope that there is a recovery in the future.

As reported in four previous posts (Death in Paradise), there is a continuance of even greater proportions seen during this trip. I reported on the findings on the reefs around Roatan Island off the coast of Honduras two years ago. The condition of the reefs showed considerable loss of the polyp life because of Stony Coral Tissue Loss Disease (SCTLD). It was quite extensive and showed nearly 70% loss of life. At night the coral showed a significant loss of fluorescence because of the large dead areas of coral polyps. During the day one could see the areas of exposed stony skeleton of the reef.

The reef at multiple sites of the Cayman Islands including Grand, Little and Brack, has been devastated by the disease. The population of the reef fish is also significantly diminished. I did not make a count of the fish or of the areas of dead coral. Because of the extent of the dead coral there was no reasonable way for me to make an accurate comparison. It was very distressing. With the option to make 20 dives I made only 12. There was nothing worthwhile to see. I would estimate more than 80% to 90% loss of polyp life. 

In conversation with other experienced divers on board the ship they said that they saw similar conditions across many of the Caribbean islands from Bonaire to the Mayan coast. Generally, they were unaware of the cause of the polyp depletion but said that it looked the same as in the Caymans. The less experienced divers were unaware of the problem and were happy to be in the warm water (85.5 degrees F). There was still some interesting wildlife but is was very reduced when compared to the concentration I had seen as little as 5 years ago. 

50% of central coral head is dead. All of the surrounding coral is dead.
Coral completely over run by SCTLD.
70% of brain coral is dead. Surrounding coral is lifeless.
nderwaterOther areas typical of the reefs showing the discruction of the polyps.
Lion fish (Invasive)
Caribbean Spiny Lobster (Panulirus argus) It was good to see a lobster but formerly there were dozens.
Mating Flamingo Tongues (Cyphoma gibbosum)
Lettuce Nudibrank (Elysia crispata)
Hawksbill turtle (Eretmochelys imbricata) Critically endangered.
Rough file clam (Ctenoides scaber). Similar to the disco-clam seen in the Palau reefs.

There was still life in the Caribbean but it may be below the 100-foot depth accessible for divers and also for much of the live that requires light. The life forms that were readily apparent were mostly bottom feeding animals. Sponges and soft fans were still alive and did not seem to be affected by the SCTLD.

The effects upon the economy that are a result of reef polyp loss are not readily available, however, many of the recreational hospitality workers are questioning their future employment opportunities. I suspect that there may be some resistance in these businesses to make these issues more public.

There has been some publication of the research into the cause of the disease and it seems that researchers have identified an infection. “Results suggest that the bacterial community may be involved in SCTLD, but other members of the holobiont (i.e., viruses and Symbiodiniaceae) may contribute to lesion progression”.1, 2

Vectors and process of viral action is not yet publicized 3. One should not expect a recommended solution for a cure until much further research will be done. I anticipate that it may take decades and that the reef corals will not survive at the current rate of disease progress. This has a direct impact on the southwest coast of Florida.

If you have observed the effects of SCTLD in other areas of the Caribbean or other places in the world please engage in the SCTLD dialogue in the discussion board.

References: Where 2. and 3. are specifically related to work done in Florida reefs.

1. A meta-analysis of the stony coral tissue loss disease microbiome finds key bacteria in unaffected and lesion tissue in diseased colonies

2. Microbial Community Shifts Associated With the Ongoing Stony Coral Tissue Loss Disease Outbreak on the Florida Reef Tract

3. Viral-Like Particles Are Associated With Endosymbiont Pathology in Florida Corals Affected by Stony Coral Tissue Loss Disease

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#SCTLD #Stony coral tissue loss disease #coral #turtle #nudibrank # Flamingo tongue #coral polyp #file clam

Revival of Pond Plants and Ecosystem Post-Hurricane Ian – Part Two

The plants of pond #47 are slowly recovering after hurricane Ian. This is part two of a three part series describing the slow recovery of the artificial pond that was created as part of a community wide system. Be sure to read part one of this series. The ten foot high storm surge from hurricane Ian brought seawater with its salt content and fish and other marine life. Because salt water is heavier than fresh water it sank to the bottom of the pond displacing a substantial portion of the fresh water. The ocean water is toxic to the fresh water species because it dehydrates the cells of salt intolerant plants and animals. This has been recovered by the inflow of fresh ground water and water filtered by community supplier. Now the water has a very low percentage of salt. My refractometric test for salinity tested on 5/1/2024 shows a near normal specific density of 1.002. We will discuss this in the next posting describing pond geochemistry.

The pond is surrounded by grassy lawns which are tended by the gardeners and home owners. At the water’s edge soil retaining mesh and plants have been added to prevent erosion. Most of these plants were thought to have been lost from toxic levels of salt. In the intervening two years they have begun to make a strong come back. They hold the soil, provide shelter for the marine animals and a feeding ground for the wading birds. Look at the previous post to see the birds feeding in grass and reed areas of the pond.

Pond plants

Net casting in pond to capture fish sample. This photo also shows round bright areas where Tilapia fish made nests
Soil retaining mesh submerged can be seen here. This was placed before the storm as part of the pond remediation.

Aquatic plant species used to reduce soil erosion.

Long view of pond looking from southeast to northwest.
Lance leaf Arrowhead, (Sagittaria lancifolia), Native, AKA Duck Potato.
Needle rush (Juncus roemerianus), Native
Horsetail spike rush (Eleocharis equisetoides) Native

Lawn, grass, Live Oak trees with marsh rushes and tubers surround the pond. They stabilize the soil and provide shelter and food as the basis of the ecosystem pyramid. It is only recently that the survivability of this plants was confirmed. Presence of these plants supports the concept of corner stone species. Without these plants the insects would not lay eggs. The fish would not feed on the insect larvae. The birds would not feed on the fish. This is further reflection of the eutrophic quality of the pond system.

Perhaps you have seen similar recoveries. Recall the experiences of the recovery of the Fulda river in Germany. Let’s hear about your experience! If you wish to contribute to the discussion please use the comment box.

The third of the three related postings on this pond will appear soon. It will describe the hydrochemistry and the micro aquatic inhabitants. Be sure to subscribe to follow along.

Also, feel free to use the discussion board to participate in one of the ongoing discussions or to introduce a new topic.

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#Pond recovery #ocean water #Lance leaf Arrowhead #Needle rush #Horsetail spike rush #cornerstone species #

Cooperation of Wildlife and People: Bonita Bay Pond #47’s Ecological Success – Part #1

This is a story of cooperation among people and wildlife in the Bonita Bay community. This description is divided into three postings including the macro biology, micro biology and geochemistry. Pond #47 is in my backyard. The freshwater pond was inundated by sea water to a depth of 10.3 feet above MSL. The flood was a climatic challenge to the entire four square mile community property including all 64 retention ponds. The good news is that recovery is well on the way to near normal conditions.

This first of three postings shows the macro biologic content of the pond. This small body of water is in the Bonita Bay residential community in the city of Bonita Springs, Florida. It was artificially constructed nearly 40 years ago as part of a larger hydraulic system intended to manage the surface water of the community property. The property is bounded by Spring Creek to the north, Imperial River to the south, Bonita Bay to the west and highway 41 to the east. There are five animal phyla represented here and they are all thriving. There are also four plant phyla.

The featured picture is one of hundreds of halloween pennant dragonflies that were so full of beautiful color. I had to share it with all of you.

Fish:

Net casting was done to collect fish samples and to check the varieties. It shows the net hitting the water, the clarity and depth, and the light-colored ring patterns in the water are spawning nests created by resident tilapia in the sandy bottom. Other techniques included fly casting and spin casting with artificial bait. Six fish species were caught from the Anchorage Pond #47. They included Mayan Cichlid, Blue Gill, Tilapia, Largemouth Bass, and Snook. Numerous minnows were seen but not caught. Neighbors who regularly fish the pond suggest that there are more Tilapia and fewer Snook since the Ian hurricane. 

Blue gill on top, Tilapia (?) on bottom
Tilapia or Gulf Killfish (Non-Native)
Mayan Cichlid (Mayaheros urophthalmus) (invasive)
Snook (Centropomus undecimalis) (Non-native)

Reptiles:

Alligators and turtles live easily in the pond. The alligator population is variable and although it usually has one. During mating season there were at least two. The turtle population is greater than the alligators and from observation there are always at least four swimming near the surface. During the day these reptiles and crawl out of the ponds to lie on the banks.

Soft shell turtle  (Apalone ferox)
Mating alligators
We’re done.

Marine Crustaceans:

One marine crustacean type was found. Three Blue crabs were found in the water along the shore. These were probably brought in by the hurricane.

Blue crab (female), (Callinectes sapidus)

Birds:

The number and species of wading birds is highly dependent upon season and weather. The birds may select those areas of the shoreline which are favorable to their food and which may be protected from predators by alligators. Here are some of the birds in the shore line vegetation hunting and eating with the alligator in their midst. The osprey was standing quietly watching from the close by tree. These birds were seen in March/April. The birds included Great Blue Herron, white and tricolored Herron, Ibis, ducks, Wood Stories, Anhinga, and Osprey.

Blue Herron
Anhinga caught a Mayan Cyclid
Great White Herron caught a minnow
Stork and Herron ignoring one another
Tricolor Herron searching for fish
Ibis in group of about twenty
American Osprey (Pandion haliaetus) waiting in tree

Insects:

The most obvious insect which could be attributed to the pond were standing or feeding on the pound shore line. The dragonflies observed were exclusively the Halloween Pennants and were in the hundreds. The White Peacock butterflies were flying about in small groups or pairs just on shore near the grass.

Halloween Pennant Dragonfly, (Celithemis eponina)
White Peacock butterfly (Anartia jatrophae)

The diversity of the wild life supports the eutrophic designation of the pond. Further examples of this follow in the next two presentations. They include the plants and the microflora with geochemistry. Be sure to see them too!

This story is similar to the previous posting on a river restoration project found in Fulda, Germany.

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See the discussion board to engage with like minded naturalists and photographers or to open a new topic to share your thoughts. https://evergladesark.com/2024/04/25/discussion-board/

#Pond #Recovery #fish #insects #crustaceans # dragonfly # butterfly # turtle # Herron # Mayan Cichlid #Snook # Blue gill #bass #Osprey #White Peacock #alligator

Life – The lessons from SWFlorida Wilderness.

Sunset in mid summer on Bonita Beach in SWFL.

Wilderness health determines human health. Public wilderness health programs are needed to reduce pressure on the remaining wildlife and all other resources. We need to continue to develop new technologies that assist in adaptation to environmental changes without over demanding the resources. This is an essay combining physics and biology.

The featured image is the sun in hand near sunset. Please also see the previous post on Sand, wind, Water and Fire.

Energy and the second law of thermodynamics:

You can’t beat physics. Probably the most delimiting aspect of physics is thermodynamics. Life anywhere needs energy to live and reproduce. Ultimately the sun is the source of all power on earth. Cells, especially in plants, import the free energy from the sun and use nutrients and a complex chain of chemical reactions and specialized compartments to sustain life. This metabolic reaction, organized by DNA, supports internal organization, self maintenance and reproduction. This is net organization. It is an alternative to an increasingly chaotic environment. The unusable waste and heat is the entropic result of metabolism. The growth and storage of resources in organic molecules of plants plus reproduction are the valuable byproducts of life. Animals use a similar but more consumptive process in exchange for mobility and associated behaviors.

This schematic shows cell biology and the level of organization as the process of life proceeds. The ending relative degree of order falls below the start point because the cell uses energy and nutrients to create order in the cell. The resulting byproducts of metabolism are less ordered than the cell and less than the start point.

As long as the sun shines, and plants and animals consume less energy than the storage rate, the system is static or even increases order by creating a surplus of stored energy. Contrarily, if consumption is greater than the storage rate, energy is depleted and entropy increases. Currently humans are over consumptive. We are depleting the reserve energy resources with the untoward results of increased chaos. To cope with this we have some biologic tools that might help us. They are Darwinian in concept. These include four characteristics; genetic variance, species differentiation by inheritance, selection by survival of the fittest, and time. These tools can be used to adapt to the changing future. They are simple but require overwhelming cooperation.

Here is what we could do to change biology:

Preserve the genetic diversity of life. It will save time when we need life forms with special properties. Use or develop plants and animals which are survivalists for specific purposes. It is easier to maintain tough species forms rather than vulnerable species. Live in communities which are located in geologically and climatically stable environments. These areas demand less energy for maintenance.

To counteract the probable climate change and chronic over-demand, we could re-engineer plants and animals. If the rate of genetic mutation of selected genomes is increased and we environmentally promote inheritance by natural selection we could reset the consumptive rate then we could stop increasing chaos and rebalance the physics. Enhance species could replace those which cannot adapt to change. Effectively we could counteract our hyper-consumptive behavior and re-terraform Earth to promote survival of the wilderness. This would select for our survival and aim for survival of all. There are other helpful green power resources that are currently employed but they require substantial energy to build and deploy.

This is all a fantasy and another reality will probably develop. The power of the sun and the adaptive capacity of DNA are the two things that will not change. Change will happen. it is difficult to predict and it is impossible to prevent. One must plan for survival and learn to go with the changes.

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References:

Cell Thermodynamics and Energy Metabolism

Eukaryotic metabolism

Cell energy metabolism: An update

#sun #thermodynamics #genomic engineering #change #entropy

Feathered Friends Found on Our Tour of SWFL Preserves

We had an opportunity to explore three distinctly different areas in Southwest Florida. Discussion of these focused on upland systems that ranged from the interior of the Everglades to the Gulf of Mexico costal planes. The earlier posts described the geography and associated plants. Animals were also found. Here are some of the feathered vertebrate species: Avians. The animal classification will follow the previously posted bird Clades. The important lesson learned here is animals predate on each other and share the environment by mutual specialization. We will discuss the significance of this concept after we have a chance to see the animals. There are some general observations which may be time or seasonal related conditions. During exploration of the various locations the song birds were less frequently found in the flatwoods. Additionally, the waterfowl were never found in the pine or scrubby flatwoods. The raptors were found in all explored areas.

The featured image is a nesting American Bald Eagle (Haliaeetus leucocephalus) with chick. This very large nest is in a hardwood, upland Slash pine near a creek.

THE BIRDS:

There were three types of birds which I photographed. All of them are wonderous in their appearance, behavior, songs, and interactions with their surroundings. To really appreciate them you must go into the field, be patient, watch and listen. I could not photograph all I saw and this is not an encyclopedia of all that are present. The following posts are an opportunity to show what to expect to see when you are there. They will have more selected photographs of some of these magnificent animals.

Waterfowl:

Including: Spoonbill, Storks, Egret, Herron, Anhinga, Duck and others

This pair of Wood Storks were feeding deep in a swamp

Raptors:

Including: Hawk, Eagle, Falcon, Osprey, Owl and others

Red Shouldered Hawk has a nest in a hard wood upland portion of Corkscrew Swamp.

Songbirds:

Including: Cat bird, Cardinal, Blue Jay, Finch, Warbler and others.

Black and White Warbler eating insects found under Cyprus bark in Corkscrew Swamp

Some birds were out of range of the telephoto lens, some were covered by foliage, some were too fast or not in focus and some were not to be found because of seasonal changes. I did my best but we are not done. Further exploration will provide an opportunity to see more, enjoy the spectacle and photograph the events.

References:

Wood Stork

Red shouldered hawk

Black and White Striped Warbler

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#Florida birds #birds

Sand, Water, Wind and Fire – Interpreting Findings From Exploring SW Florida

The ancient Greeks believed that there were four elements that made up everything. These were earth, water, air, and fire. The powerful image of these are readily apparent when walking through our wilderness. They form a landscape which we call an ecosystem.

The feature image is a composite of the elements which make up the four elements of a world view that lasted for three thousand years of human civilization. This concept was not challenged until the 17th century, not questioned until the 18th century, not recodified until the 19th century and not defined until the 20th century. Yet, when walking through our wilderness, it is easy to see why the simplistic view was so persistent.

In previous posts you saw the following scenes during our explorations of southwest Florida. Notice that all observations were based on sand. The most frequently found life forms have been the plants. The Slash pines, Saw palmetto, Ferns and grasses. are the toughest most productive species. They may not be the first responders but they are always the last survivors. They may not be keystone but they may be the cornerstone species

Sand supports plants and animals even those emerging from the sea.
Together with the energy of the sun, water is the stuff of life on our blue planet.
Wind is the great mover of everything from sand and water to fire.
In the flats and the hummocks, fire is both the destroyer and creator.

There are commonalities among the ecosystems we have explored in SWFL. What we see are the four elements of water, sand, wind and fire. We looked at hardwood hummocks, flatwood pines and scrubs and beach pine ecosystems in SWFL. The dominant surface has been sand but this is a specific old sand that doesn’t stick together because of its blunt, rounded surfaces and corners. Water has also been a constant factor in all of these environments. It has ranged from swamps to marshes, streams and ponds of fresh water to high salinity coastal ocean water. The size and shapes of the sands and the plants which live in them has been shaped by wind and selectively cultivated by fire. In casual observation we may not be aware of it however, on a daily basis, they are all in constant flux.

Hardwood hummock generated by the survivors allowing angiosperms and animals to specialize.
A marsh is unable to support trees or dry soil dependent animals but is filled with saw palmetto and other survivors.
Flatwood pines and scrub work together to provide the canopy.
Costal flatwood stabilize the sand against flood, wind and fire.

Although geologically, climatically and biologically diverse, these observations are consistent with those made in other parts of the world including our exploration of the equatorial and central Africa, Central Europe, Central and South America, the subarctic tundras of Canada and central and costal China. They all have cornerstone species which are tough and prolific.

Our persistent global view of our environment is delusional. It seems constant and simple. This perception is in conflict with the reality of global changes that are revealed only with fact based uber-human insights. From discovery of subatomic structure and molecular biology to views of earth from outer space and massive data and computational power we see that our earlier concepts were so shortsighted. Geologic and fossil records suggest that life with RNA began 2 to 3 billion years ago. RNA/DNA is the ultimate survivor. It persists in its myriad forms and is the foundation of all life today. If we allow ourselves to have a humbling experience we can see that although humans are now the dominant animal species it is a fleeting, precarious existence where we are so vulnerable to extinction. The next most dominant animal species is insects. Unlike insects we use and abuse the resources with intention or without it. The insects with the plants which occupy this land have a remarkable vast history of slowly changing physiology and appearance. Over time, they mutate, procreate, selectively survive and change to meet the planet which in turn reciprocates the change. They are aware only of earth, water, wind and fire. Still, they will out survive us.

Time line for the universe, suggesting the early existence of an RNA world of living systems.*

In the enormous scale of time, animal species and angiosperms have frequently changed. Birds and mammals which we enjoy today have developed only in the recent 65 million years since the last extinction; hominoids only in the last 1 million. In SWFL these plants are generally angiosperms like saw palmetto, slash pine, ferns and grasses including palms. The plants are quick to recover from wind and fire but genetically are very slow to change. They are the ultimate survivors with predecessors that date back hundreds of millions or perhaps a billion years almost unchanged. Some animals are ancient too, like the reptiles, insects and many marine animals. Relative to these ancient plant and animal species, all that we see alive today including humans are invasive species with which the plants have accommodated. We are continually faced with our own changes and that of the world around us. Of the species that are with us today, in time, most will disappear. The survivalists on land, like insects, gymnosperms, and reptiles will persist.

Interpretative summary;

Change is inevitable. Those who are able to accommodate to change are survivors. If the speed of accommodation to change is insufficient then to avoid extinction, the ability to recover from stress is imperative . There are some unavoidable extinction events. If you don’t like them, try not to create them.

So what:

We should rethink our relationship to the environment. We need to assimilate and cooperate with the changes. Resistance is futile. In a following post we will explore a futurist view of what will eventually be done. Evolutionarily the agent acting against physics and thermodynamics has been life. Life has survived by accommodating to everything during the last 3.5 billion years. Using the free energy from the sun, DNA collects and stores information, builds resources of energy storage and construction materials. With these it generates and executes algorithms that protect and promote self replication. For our survival we will do the same. This process is in our genes; in fact it is our genes.

References:

*Molecular biology of the cell,. Alberts B, Johnson A, Lewis J, et al. York: Garland Science; 2002.

Alberts B, Johnson A, Lewis J, et al.

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# sand #water #wind #fire #interpretation #change #

Florida C.R.E.W. Hardwood Hummock – Part 2

This is a description of the grassy and herbaceous undergrowth of this small part of the C.R.E.W. Together with the Part 1 post, the purpose of this presentation is to reduce the confusion of seemingly random plants and to help you understand why you see the what and why of the plants you see when you explore this type of wilderness area.

The featured image shows the “American beauty berry” in the understory. It was found along the trail to the live oak hummock on the path in the C.R.E.W. Cyprus Dome Cypress Hummock. This is second of a two part presentation of this area. The part one has the GPS location, charts and maps and describes the walk-about of the Corkscrew Reserve Environmental Watershed.

Perhaps the best way to understand the hydrology and geology for an area is to look at the plants. They have adapted themselves to use the area without the need to follow the resources like the animals. In fact the animals seek out the plants for survival. In these two presentations you can see the variances in plant anatomy and physiology through a series of locations. The plant adaptations have taken eons to reach the characteristics that make them identifiable as genus and apecies. The plants have the ability to adapt to the changing environment using two tools. These include plant succession and genetic mutation. Succession occurs when an ecosystem changes gradually or even catastrophically. This may cause the plant climax species to expire. Opportunistic species then overtake an available environmental niche. Mutations are genetic changes that take place at a known rate and this may result in variations which are better adapted to survive in an ecosystem. These mutations can be cumulative and can be perpetuated in the genome of subsequent progeny by inheritance of the variance.

Two signs of animal activity. The bear has slashed through the outer surface of a palm to feast on the honey made by a nest of bees.

This is a view into the scrub before the pond. From this distance the green mid-growth seems to be mangroves.

 Here is a scene off the path toward the marsh with reeds and sedges and other grasses.
Southern live oak
Thorn apple bush (Crataegus alabamensis) with the thorns as an identifier.
Possible Florida alligator weed with changing colors
Polygala lutea
Lyonia ferruginea
This view is in the periphery of the transition zone with no oaks but many palms and saw palmetto dominating the understory.
Coastal plain grass-leaved-goldenrod (Euthamia caroliniana) (I think)  
Shiny blueberry (Vaccinium myrsinites)
Little Bluestem, (Popotillo Azul)
Meadowsweet at the edge of the hardwood hummock. Identification of this would be better if the blooms were fresh.
This is a sample of plants in the late transition zone. Note the oak tree litter which acts as a plant inhibitor. Though the “beans” contain no caffeine, they can be roasted and consumed as a coffee-like beverage.*
Bull thistle (Crisium vulgare), Invasive
Rosary pea (Abrus precatorius),  invasive, highly toxic.
Beauty berry (Callicarpa americana). The berries are edible to humans, although should be consumed in small amounts. Raw berries are edible, but generally are used to make jellies and wines.**

Observation of a confined area environment is a complicated but fun puzzle. The area should be visited during multiples of seasons, time of day intervals and length of observation to begin to grasp a comprehensive understanding of the area and begin to understand the reasons for classification and to understand the interactions of the plants and animals. Even simple identification is difficult when the plants are not blooming or in leaf. From this first time visit it can be discerned that there is a progression of plant types and land elevations in this small area. At the end of this presentation there is a simplified map of the area under observation. 

This image of the understory in the oak hummock canopy shows the more dense plant undergrowth. This may occur because the oak tree litter is less prevalent and because some plants are less susceptible to the shedding of oak allelopathogens..
This is a sample of plants in the late transition zone. Note the abundance of oak tree litter which acts as a plant inhibitor.
No oak tree litter here and hence no trees, however, there are many herbaceous plants. That is a Fritillary Butterfly.
These plants support a wide variety of animals which are specifically dependent on select plant species as are these butterflies. The butterfly here is a Queen. Check out the earlier post on Queens.

This simplified chart shows the four major ground areas that were observed. The hardwood hummock is about ten inches higher than the scrub flats. The scrub flats are about two inches above the level of the pond water.

The undergrowth depends upon water, sunlight, soil minerals and a range of allelopathic inhibitors. Be sure that you check out part 1 of this series. This understory is very different from that found in the Estero River Scrub Preserve State Park. We will go there in the near future.

Here is a recommendation. Go out into the nearby wilderness area. Pick a quiet spot and try to identify the type of environment classification you see or identify the undergrowth plants. It can be a fun and an educational challenge! Share your experiences or photos in the comment box below.

Reference:

Wild Coffee1

Wild coffee 2

Wild Weeds – American Beautyberry

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#hummock #succession #mutation #climax species #herbaceous understory #CREW #allelopathic #oak hummock #scrub flats #hydrology #geology

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