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Empirical analysis of zooplankton filtering and feeding rates 1
Author(s) -
Peters Robert Henry,
Downing John A.
Publication year - 1984
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1984.29.4.0763
Subject(s) - zooplankton , functional response , biology , regression analysis , regression , ecology , pelagic zone , daphnia , clearance rate , statistics , mathematics , predation , predator , endocrinology
Multiple regression analysis of published zooplankton filtering and feeding rates yielded separate regression equations for cladocerans, marine calanoid copepods, and all zooplankton. Ingestion rate was found to increase significantly with animal size, food concentration, and temperature. Filtering rate also increased with animal size and temperature, but declined as food concentration increased. The analysis suggests a difference in particle size preference between cladocerans and copepods. Experimental conditions such as crowding and duration also significantly affected filtering and feeding rates. The regression models allow examination of differences and similarities among zooplankton taxa, functional response, particle size selection, energy allocation, and threshold food concentration. The statistical models describe suspension feeding more precisely than either average literature values or verbal descriptions of trend. The results also suggest possible mechanisms of feeding limitation and provide a heuristic framework for the design of experimental analyses of zooplankton feeding in marine and freshwater systems.