changes present an opportunity to examine how changes in aquatic animal
assemblages affect ecosystem processes and may provide the means to
compare the relative importance of direct versus indirect effects of assem-
blage and size structure on nutrient cycling.Acknowledgements
Mike Vanni, Emidio Andre, Keith Gido and Maynard Schaus kindly provided
tables of their published data for analysis. Two anonymous reviewers provided
useful comments on an earlier draft of this manuscript. Financial support was
provided by National Science Foundation; Environmental Protection Agency;
and the Juneau Pacific Northwest Research Station, USDA Forest Service.References
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