Habitat Requirements of Young Colorado River Cutthroat Trout in Relation to Alterations in Streamflow
Author: Frank J. Rahel
Publisher:
Published: 1989
Total Pages: 166
ISBN-13:
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Author: Frank J. Rahel
Publisher:
Published: 1989
Total Pages: 166
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DOWNLOAD EBOOKAuthor: Michael K. Young
Publisher:
Published: 1996
Total Pages: 40
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DOWNLOAD EBOOKAuthor: Harold M. Tyus
Publisher:
Published: 1989
Total Pages: 40
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DOWNLOAD EBOOKAuthor: Michael K. Young
Publisher:
Published: 2008
Total Pages: 123
ISBN-13:
DOWNLOAD EBOOKThe Colorado River cutthroat trout (Oncorhynchus clarkii pleuriticus) was once distributed throughout the colder waters of the Colorado River basin above the Grand Canyon. About 8 percent of its historical range is occupied by unhybridized or ecologically significant populations. It has been petitioned for listing under the Endangered Species Act and is accorded special status by several state and federal agencies. Habitat alteration and nonnative trout invasions led to the extirpation of many populations and impede restoration. Habitat fragmentation exacerbated by climate change is an emerging threat. A strategic, systematic approach to future conservation is likely to be the most successful.
Author: Michael K. Young
Publisher:
Published: 2008
Total Pages: 123
ISBN-13:
DOWNLOAD EBOOKThe Colorado River cutthroat trout (Oncorhynchus clarkii pleuriticus) was once distributed throughout the colder waters of the Colorado River basin above the Grand Canyon. About 8 percent of its historical range is occupied by unhybridized or ecologically significant populations. It has been petitioned for listing under the Endangered Species Act and is accorded special status by several state and federal agencies. Habitat alteration and nonnative trout invasions led to the extirpation of many populations and impede restoration. Habitat fragmentation exacerbated by climate change is an emerging threat. A strategic, systematic approach to future conservation is likely to be the most successful.
Author:
Publisher:
Published: 1995
Total Pages: 72
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DOWNLOAD EBOOKAuthor: Wyoming Water Research Center
Publisher:
Published: 1988
Total Pages: 278
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DOWNLOAD EBOOKAuthor: Michael K. Young
Publisher:
Published: 1995
Total Pages: 61
ISBN-13:
DOWNLOAD EBOOKThis document focuses on the state of the science for five subspecies of cutthroat trout found largely on public lands in the Rocky Mountain and Intermountain West. These subspecies are restricted to a fragment of their former range, and primarily occupy small, high-elevation streams. Little is known about the three rarest subspecies (Bonneville, Colorado River, and Rio Grande cutthroat trout), and the data on the more abundant subspecies (westslope and Yellowstone cutthroat trout) were obtained from relatively few areas. The historic diversity of life history strategies has been reduced. All subspecies have suffered from introductions of nonnative fishes, habitat degradation and fragmentation, and overfishing. Current management often centers on restrictive angling regulations, barricading streams to prevent invasion by nonnative fishes, and reintroductions into streams with existing barriers.
Author: Peter A. Cavalli
Publisher:
Published: 1996
Total Pages: 94
ISBN-13:
DOWNLOAD EBOOKAuthor: Dennis M. Jesperson
Publisher:
Published: 1986
Total Pages: 11
ISBN-13:
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