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Spokes 2: The Web of Life     (Table of Contents) {Notes}

Understanding the coherence of life opens a portal to comprehending the nature of existence. Every organism has a body described by its DNA. Every organism has a mind - the fundamental implement of cognition necessary to survive.

Spokes 2 celebrates the diversity of life: the biospheric stage; the lifestyles of the large and small; how communication is essential to all, as ecology defines quality of life. Through stories of many species, Spokes 2 explores the gyre of biological being.


From the chapter on The Web of Life:

Staying alive requires intelligence: intelligence as information, and intelligence in making sense of gleaned information so as to act with the will to live.

The intelligence of the earliest and most primitive life is conceptually the same as the highest cognition, however that might be defined. Both are based upon sufficient awareness for discriminability.

The most primitive cognition is electro-chemical: reacting differently to different chemical compounds. This makes perfect sense when considering that chemistry begat biology; that life originated via sequences of consistent chemical reactions, and that life sustains by cogent memory, in the broadest sense, of requisite reaction sets.


From the section on Biota:

Microbes ubiquitously have symbiotic relationships with macrobes, in every variety: mutualistic, commensal, and parasitic.

All complex organisms (macrobes) are cellular colonies, living symbiotically with microbes as a symbiorg. Every plant and animal comprises a community: a host living in concert with a microbiome.


On mushrooms (from the chapter on The Diversity of Life):

Some mushrooms possess the impressive ability to seemingly appear overnight; hence colloquiality about "mushrooming."

A minute fruiting body forms as a first stage. A small button follows in the next stage. Once button staged, a mushroom can rapidly absorb water from its mycelium and expand, mainly by inflating preformed cells which took several days to form. While such mushroom fruiting bodies are short-lived, the underlying mycelium may be massive and enduring.

Not all mushrooms quickly mushroom. Some grow slowly, adding tissue by growing from the edges of a colony, or by adding hyphae.

The oldest organism in the world was a humongous fungus: 2,200 years old, in over 9.7 km2 of soil, in an eastern Oregon forest. Then logging roads cut it up.


From the chapter on Plants:

Animal behavior involves movements, postures, gestures and expressions. With exceptions, plant movement is on a far slower scale. This is typical of multicellular organisms that lack an identifiable nervous system or its immediate analog. Plant gestures and expressions, if they exist, are unrecognizable to us.

Animals cannot behave through bodily transformation, nor do they behave by chemistry demonstrations, communication aside. In contrast, phenotypic plasticity and chemical production predominate plant behavior.

Plant actions largely comprise growing and discarding parts. Production and allocation of the vast variety of possible chemical compounds is another crucial plant behavior.

Intelligence is demonstrated by behaviors. Plant behaviors are so radically different from that of animals that the common notion is that plants do not behave at all. Because plant behaviors are so far from the animal frame of reference, their genius is practically inscrutable.

Plants intake, process, store, integrate and retrieve information, applying intelligence to make decisions. Because plant behavior is largely chemical and phenotypic, the number of choices that a plant at any moment has dwarfs any analogy of animal behavioral options.


From the chapter on Animals:

The term animal comes from the Latin animalis, meaning "having breath." Breath may be slight.

One nematode, Halicephalobus mephisto, thrives with scant oxygen in deep fracture groundwater that is thousands of years old, up to a depth of least 3.6 km. These little black worms, 0.5 mm long, withstand crushing pressure and searing heat to feast on the biofilm bacteria deep down. There is a functioning biosystem there.

Breath does not distinguish animals from plants. Plant pores (stomata) have a regulated cycle of breathing in carbon dioxide and exhaling water vapor.


From the section on Aspects of Existence:

Social aggregation has its benefits, but it also imposes a significant cost: concentration creates resource competition. But there can be compensation for the crowding. Being in on the rumor mill yields tips on the best eating places.

Microbes move in optimized motion patterns to collect nutrients. They share intelligence with others on prime feeding locations.

Instead of scrounging for a living, many bacteria make a smart trade-off in choosing the comfort of host-based living: regular feeding, perhaps in return for modestly helping the habitat, such as digesting what got eaten. Life can be quite good in a microbiome: the company of fellows and regular meals.


From the section on Cooperation:

Living is an opportunistic exercise. Cooperation happens when it aligns with self-interest. The subtle issue inherent in such alignment is how self-interest is perceived.

Cooperation can be empathy in action. An animal may emotionally identify with another, which may be as simple as similarity in predicament.

Captive animals of different species tend to friendship from mutually facing eternal confinement. Life alone is lonely. Friendship is essentially emotional cooperation.


Spokes 2 surveys the wondrous diversity of life. Spokes 3 continues with how life evolves.