BIOLOGY 2F03 Lecture Notes - Keystone Species, Rainbow Trout
Document Summary
A food web is a summary of the feeding interactions in a community of species. A few keystone species may control the structure of a community. Exotic predators may simplify the structure (and diversity) of food webs. Feeding relations to simplify description, graphic representations called food webs are used. On the opposite pole food web of bear island, arctic some differences include presence of land based predators commonalities. Are all the links all the same in the way they influence members of the community. Cano volcan in costa rica and its food web. Weak links removed: food becomes simpler to analyze. 10 most common fish species and their food items: the web is very complex strong interactions. What may influence food web properties in space and time. Two food web comparison subtropical vs. temperate focus on different shapes and diversity. Robert paine observed that a relatively simple temperate food web contained a relatively low proportion of predatory species.
