BIOL 351 Lecture Notes - Lecture 12: Cattle Egret, Interspecific Competition, Seed Predation
7 Mar 2017
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A community is a group of populations of different species living close enough to interact. The effects of these interactions on population growth can be positive, negative, or neutral. No effect on the growth of interacting populations. Very hard to prove it exists but it has been used to describe situations where species do not interact with or affect each other but occupy the same ecosystem. Epiphytic plants on larger branches of a tree. Remora hitching a ride on sharks or other large animals. Usually occurs when one organism exudes as part of its normal metabolism a chemical compound detrimental to another organism: eg. What are the two different kinds of association: facultative: association not required for the survival of individuals involved, obligatory: association is required for the survival of individuals involved. Comepetition is an interaction in which one organism uses a resource that would have been available to, and might have been used by, another.
