Predation, Yield, and Ecological Efficiency in Aquatic Food Chains
- 1 February 1976
- journal article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 33 (2) , 313-316
- https://doi.org/10.1139/f76-047
Abstract
Given constancy of biomasses and sizes of predators and prey, the basic ecological equations are used to show that relative predation rates must increase rapidly as trophic level in aquatic food-chains drops towards primary production. The implications of this conclusion for exploitation at different food-chain levels is discussed.Keywords
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