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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