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Habitat structure determines resource use by zooplankton in temperate lakes.
MedLine Citation:
PMID:  21314881     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Ecology Letters (2011) ABSTRACT: While the importance of terrestrial linkages to aquatic ecosystems is well appreciated, the degree of terrestrial support of aquatic consumers remains debated. Estimates of terrestrial contributions to lake zooplankton have omitted a key food source, phytoplankton produced below the mixed layer. We used carbon and nitrogen stable isotope data from 25 Pacific Northwest lakes to assess the relative importance of particulate organic matter (POM) from the mixed layer, below the mixed layer and terrestrial detritus to zooplankton. Zooplankton and deep POM were depleted in (13) C relative to mixed layer POM in lakes that can support deep primary production. A Bayesian stable isotope mixing model estimated that terrestrial detritus contributed <5% to zooplankton production, and confirms the role of lake optical and thermal properties; deep POM accounted for up to 80% of zooplankton production in the clearest lakes. These results suggest terrestrial support of lake zooplankton production is trivial.
Authors:
Tessa B Francis; Daniel E Schindler; Gordon W Holtgrieve; Eric R Larson; Mark D Scheuerell; Brice X Semmens; Eric J Ward
Publication Detail:
Type:  LETTER     Date:  2011-2-14
Journal Detail:
Title:  Ecology letters     Volume:  -     ISSN:  1461-0248     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101121949     Medline TA:  Ecol Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 Blackwell Publishing Ltd/CNRS.
Affiliation:
Department of Biology, University of Washington, Seattle, WA 98195, USA School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195, USA National Oceanic and Atmospheric Administration, Northwest Fisheries Science Center, Seattle, WA 98112, USA.
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