Paleoecology(1)

Paleoecology(1) - PALEOECOLOGY Study of ecology of past...

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PALEOECOLOGY Study of ecology of past life/environs. Not so much about species as about roles. Why? Not to demonstrate that “ecology works.” Better understand extinct organisms. Better understand how environment/life habit affects evolution. Examine ecological processes that take long time. Autecology – ecology of a species Synecology – ecology of an assemblage of species
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NICHE Factors that affect organisms: Food, temperature, oxygen, water, salinity, sunlight, turbidity, predation, competition, living space, mate proximity, turbulence, substrate, etc. Eltonian NICHE – An N-dimensional hyperspace defined by an organism’s minimal and maximal requirements in all these factors. Leibig’s Law of Minimum – that resource closest to a species limiting requirement will control its distribution. Life Habit – how an organism makes a living: sessile vs. vagrant, infauna vs. epifauna, benthic vs planktic vs nektonik, carnivore vs herbivore, autotroph vs heterotroph, suspension feeder vs deposit feeder, warm-blooded vs cold-
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Paleoecology(1) - PALEOECOLOGY Study of ecology of past...

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