Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Abundance, composition, and distribution of crustacean zooplankton in relation to hypolimnetic oxygen depletion in west-central Lake Erie /
Author Heberger, Roy F.
Other Authors
Author Title of a Work
Reynolds, James Blair,
Publisher U.S. Dept. of the Interior, Fish and Wildlife Service,
Year Published 1977
OCLC Number 03069575
Subjects Crustacea--Erie, Lake. ; Freshwater zooplankton--Erie, Lake. ; Biochemical oxygen demand. ; Water--Dissolved oxygen. ; Lake Erie.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELAM  QL441.1.A1 1977 Region 5 Library/Chicago,IL 05/16/2017
ESBD  I49.68 no.93 CPHEA/PESD Library/Corvallis,OR 03/17/1995 DISPERSAL
Collation 17 pages : illustrations ; 26 cm.
Includes bibliographical references (pages 7-8).
Contents Notes
Samples of crustacean zooplankton were collected monthly in west-central Lake Erie in April and June to October 1968, and in July and August 1970, before and during periods of hypolimnetic dissolved oxygen (DO) depletion. The water column at offshore stations was thermally stratified from June through September 1968, and the hypolimnion contained no DO in mid-August of 1968 or 1970. Composition, abundance, and vertical distribution of crustacean zooplankton changed coincidently with oxygen depletion. Zooplankton composition shifted from mainly cyclopoid copepods in July to mainly cladocerans and copepod nauplii in middle to late August. We believe that mortality of adults and dormancy of copepodites in response to anoxia was the probable reason for the late summer decline of planktonic C. b. thomasi.