Long-term decline in freshwater mussels (Bivalvia: Unionidae) of the western basin of Lake Erie
Journal of Great Lakes Research
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Abstract
Long-term trends in the abundance of unionids in the western basin of Lake Erie were examined from data collected at 17 stations in 1961, 1972, and 1982. The mean number of unionids at these stations declined over this time period, decreasing from 10 m−2 in 1961, to 6 m−2 in 1972, down to 4 m−2 in 1982. This decline in abundance was reflected in the decrease in the number of stations where mussels were found; unionids were found at 16 of the 17 stations in 1961, but at only 6 stations in 1982. Reasons for the decrease in the unionid population are not generally apparent, but are probably related to the decline in water quality and periods of low oxygen levels over the time period of the surveys.
Suggested Citation
Nalepa, T., Manny, B.A., Roth, J.C., Mozley, S.C., Schloesser, D.W., 1991, Long-term decline in freshwater mussels (Bivalvia: Unionidae) of the western basin of Lake Erie: Journal of Great Lakes Research, v. 17, no. 2, p. 214-219, https://doi.org/10.1016/S0380-1330(91)71358-0.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Long-term decline in freshwater mussels (Bivalvia: Unionidae) of the western basin of Lake Erie |
| Series title | Journal of Great Lakes Research |
| DOI | 10.1016/S0380-1330(91)71358-0 |
| Volume | 17 |
| Issue | 2 |
| Year Published | 1991 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Great Lakes Science Center |
| Description | 5 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Great Lakes Research |
| First page | 214 |
| Last page | 219 |
| Country | United States |
| Other Geospatial | Lake Erie |