Entrainment of lchthyoplankton by a Warmwater Hydroelectric Facility
1993; Wiley; Volume: 122; Issue: 5 Linguagem: Inglês
10.1577/1548-8659(1993)122 2.3.co;2
ISSN1548-8659
AutoresVincent H. Travnichek, Alexander V. Zale, William L. Fisher,
Tópico(s)Aquatic Invertebrate Ecology and Behavior
ResumoAbstract We examined entrainment of ichthyoplankton associated with hydropower generation in 1988 and 1989 at the Pensacola Dam hydroelectric facility on Grand Lake in northeastern Oklahoma. To provide a basis for evaluating the effects of entrainment on the fish assemblage, we also estimated the total abundance of fish eggs and larvae in the top 10 m of the reservoir. Entrainment totaled about 10 million larval fish in 1988 and almost 100 million in 1989. Only nine taxa of larval fish were entrained during the study. Entrained eggs were almost exclusively those of freshwater drum Aplodinotus grunniens. Although estimates of entrainment were large, they were generally low compared with the estimates of total abundance of ichthyoplankton in Grand Lake.
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