Record Display for the EPA National Library Catalog


Main Title Analysis and Interpretation of Zooplankton Samples Collected during Phase 2 of the Eastern Lake Survey.
Author Tessier, A. J. ; Horwitz, R. J. ;
CORP Author Academy of Natural Sciences of Philadelphia, PA.;Corvallis Environmental Research Lab., OR.
Publisher Jan 92
Year Published 1992
Report Number REPT-88-18; EPA/600/R-92/012;
Stock Number PB92-136829
Additional Subjects Zooplankton ; Biological indicators ; Water pollution effects ; Lakes ; Water chemistry ; Aquatic ecosystems ; Biological communities ; Acidification ; Species diversity ; Surface waters ; Regional analysis ; Environmental effects ; Graphs(Charts) ; Sampling ; Northeast Region(United States)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB92-136829 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 303p
Samples from 146 lakes in the northeastern United States, collected during Phase II of the Eastern Lake Survey (ELS-II) were analyzed for abundance of each species and each size class of zooplankton. The composition of zooplankton assemblages (not abundance) exhibited clear relationships with physical and chemical features of the lakes. Assemblage structure was examined at various levels: diversity, major genera, and individual species. Genera and species level identifications revealed the clearest relationships to water chemistry, although significant relational patterns were discerned using only major taxonomic groups or size structure information. Significant regional influences (biogeographic patterns) were also observed at various levels of organization (major taxonomic groups, genera, species, and diversity). These results illustrate the utility of studying zooplankton assemblages as sensitive indicators of water chemistry. The report makes recommendations for improving methods of relating zooplankton species to environmental factors.