BIOL 313 Lecture Notes - Lecture 31: Food Web, Content Analysis, Herbivore
31 Mar 2018
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Document Summary
Charles elton pioneered the modern view of communities. Studies of tundra communities on bear island in the north atlantic, off the coast of norway. Documented (cid:1688)food relations,(cid:1689) which revealed a directional flow of energy. These feeding relationships are links within food webs. A food web describes the feeding relations among organisms in all or part of a community. Links are the lines of a food web, which indicate a predator-prey interaction between two species. To the extent that competition among predators results from the consumption of prey, food webs also outline subset of competitive interactions within communities. Thus, easier to fully describe food web when fewer interacting species (less complexity) Primary producers are terrestrial plants and aquatic algae. Primary producers (plants) are eaten by primary consumers (herbivores) which are eaten by secondary consumers (carnivores) Food web is a summary of feeding relationships. Description of who eats whom by (quantitative techniques):
