The chapter describes the research conducted by ecologist Bob Paine. When Paine was in graduate school, the general thinking among ecologists was that world was organized into trophic levels that make up a food chain, and that control biological communities was via food chains from the "bottom up". What does "bottom up" control mean? CLICK ALL THAT APPLY. Each trophic level limits or regulates the next higher trophic level. In other words, plants limit herbivores, and herbivores limit predators. Predators are just passengers in a biological community, having little effect. Primary producers have little effect on a biological community. The largest impacts are the secondary consumers. The amount of primary production (plants) food available controlled the biological community. Primary producers have little effect on a biological community. The largest impacts are the predators. The amount of food available for predators controlled the whole community.
The chapter describes the research conducted by ecologist Bob Paine. When Paine was in graduate school, the general thinking among ecologists was that world was organized into trophic levels that make up a food chain, and that control biological communities was via food chains from the "bottom up". What does "bottom up" control mean? CLICK ALL THAT APPLY. Each trophic level limits or regulates the next higher trophic level. In other words, plants limit herbivores, and herbivores limit predators. Predators are just passengers in a biological community, having little effect. Primary producers have little effect on a biological community. The largest impacts are the secondary consumers. The amount of primary production (plants) food available controlled the biological community. Primary producers have little effect on a biological community. The largest impacts are the predators. The amount of food available for predators controlled the whole community.
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter54: Ecosystems And Global Change
Section: Chapter Questions
Problem 1ITD
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