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The status of Limnocalanus macrurus (Copepoda: Calanoida: Centropagidae) in Lake Erie

Journal of Great Lakes Research

Out-of-print
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Abstract

The calanoid copepod Limnocalanus macrurus showed large declines in abundance and a narrowing of spatial distribution with the onset of cultural eutrophication and increases in rainbow smelt (Osmerus mordax) abundances in Lake Erie in the mid 20th century. Since 1995, however, Limnocalanus macrurus appears to have repopulated in western Lake Erie to levels of abundance that have not been observed since the late 1930s. We hypothesize that phosphorus abatement and the subsequent decrease in low dissolved oxygen events have assisted this resurgence. However, Limnocalanus macrurus abundances have not increased in the central and eastern basins, even though water quality has improved there too. High densities of rainbow smelt and associated smelt predation pressure in the central and eastern basins may be responsible for the low numbers in these basins.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The status of Limnocalanus macrurus (Copepoda: Calanoida: Centropagidae) in Lake Erie
Series title:
Journal of Great Lakes Research
Volume
30
Issue:
1
Year Published:
2004
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 22-30
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
22
Last page:
30
Number of Pages:
8