Nebraska Academy of Sciences
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Accessibility Remediation
If you are unable to use this item in its current form due to accessibility barriers, you may request remediation through our remediation request form.
Date of this Version
2004
Document Type
Article
Abstract
A survey in the Little Blue Basin documented the presence of 22 extant or extirpated unionid mollusk species. Bivalve habitat is severely impaired by surface and subsurface water withdrawals, erosion, siltation, and grazing. Chemical contaminants and other pollutants washed into area streams from agricultural fields probably exert a further deleterious impact upon the fauna of the region. Half of the species recovered were represented only by chalky or badly weathered shells, suggesting their possible elimination from the basin. The generally poor condition of shells of many of the remaining species suggests they are also in severe decline in the region.
Comments
Published in 2004. Transactions of the Nebraska Academy of Sciences 29: 7-24; Copyright © 2004 Hoke