PMID: 11607368Feb 15, 1993Paper

Productivity, consumers, and the structure of a river food chain

Proceedings of the National Academy of Sciences of the United States of America
J T Wootton, M E Power

Abstract

We tested models of food chain dynamics in experimentally manipulated channels within a natural river. As light levels increased, primary productivity and the biomass of algae and primary predators increased, but the biomass of grazers remained relatively constant. In the presence of a fourth trophic level, algae and primary predators decreased, but grazers increased. These results match predictions of food chain models based on classical predator-prey theory and suggest that simple models of multitrophic level interactions are sometimes sufficient to predict the responses of natural communities to changes in environmental productivity and predators.

References

Sep 20, 1974·Science·J A Estes, J F Palmisano
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Citations

Sep 2, 2000·Journal of Experimental Marine Biology and Ecology·B A Menge
Oct 26, 2000·Trends in Ecology & Evolution·G A PolisJ Maron
Jun 7, 1994·Proceedings of the National Academy of Sciences of the United States of America·O J Schmitz
Aug 6, 1996·Proceedings of the National Academy of Sciences of the United States of America·J Urabe, R W Sterner
Nov 26, 1996·Proceedings of the National Academy of Sciences of the United States of America·J T WoottonC A Pfister
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Apr 29, 2021·MBio·Bruce A HungateJennifer Pett-Ridge
May 9, 2021·Ecology Letters·Kelsey LybergerSebastian J Schreiber

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