TY - JOUR
T1 - Changes in the canadian river fish assemblage associated with reservoir construction
AU - Bonner, Timothy H.
AU - Wilde, Gene R.
N1 - Funding Information:
We thank C. D. Smith, G. R. Wilde, 111, and R. Jimenez for assistance in the field; K. Collins, M. Irlbeck, and D. Moomaw for logistical and other support; and K. L. Pope for comments on the manuscript. We also thank W. W. Dalquest for helpful discussions. Funding for this study was provided by the US Fish and Wildlife Service, Tulsa, OK, and the US Bureau of Reclamation, Austin, TX. This is contribution T-9-841 of the College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock.
PY - 2000/6
Y1 - 2000/6
N2 - The fish assemblage of the Canadian River in Texas historically was dominated by Hybognathus placitus and Notropis girardi. These species represented > 90% of fishes collected from the Canadian River in 1954–1955. Construction of two reservoirs on the Canadian River in the 1960s (Ute Reservoir, New Mexico, 1962; Lake Meredith, Texas, 1965) altered hydrologic conditions in the river and affected the fish assemblage. Downstream from Ute Reservoir, mean annual discharge decreased by about 38% after impoundment, but H. placitus, N. girardi, and other mainstem species still dominate the assemblage. Downstream from Lake Meredith, mean annual discharge decreased by 76% and the historic mainstem fish assemblage has been almost completely replaced by species that formerly were restricted to tributary streams. The magnitude of post-impoundment changes in the fish assemblage of the Canadian River appears to be related to the degree that discharge has declined, especially during the spawning season.
AB - The fish assemblage of the Canadian River in Texas historically was dominated by Hybognathus placitus and Notropis girardi. These species represented > 90% of fishes collected from the Canadian River in 1954–1955. Construction of two reservoirs on the Canadian River in the 1960s (Ute Reservoir, New Mexico, 1962; Lake Meredith, Texas, 1965) altered hydrologic conditions in the river and affected the fish assemblage. Downstream from Ute Reservoir, mean annual discharge decreased by about 38% after impoundment, but H. placitus, N. girardi, and other mainstem species still dominate the assemblage. Downstream from Lake Meredith, mean annual discharge decreased by 76% and the historic mainstem fish assemblage has been almost completely replaced by species that formerly were restricted to tributary streams. The magnitude of post-impoundment changes in the fish assemblage of the Canadian River appears to be related to the degree that discharge has declined, especially during the spawning season.
UR - http://www.scopus.com/inward/record.url?scp=0034112460&partnerID=8YFLogxK
U2 - 10.1080/02705060.2000.9663736
DO - 10.1080/02705060.2000.9663736
M3 - Article
AN - SCOPUS:0034112460
VL - 15
SP - 189
EP - 198
JO - Journal of Freshwater Ecology
JF - Journal of Freshwater Ecology
SN - 0270-5060
IS - 2
ER -