Colorado Greenback Cutthroat Trout
Colorado Greenback Cutthroat Trout

Author: Jim Rubingh

Publisher: Frank Amato Publications

Published: 2009-10

Total Pages: 0

ISBN-13: 9781571884473

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Once thought to be extinct, Colorado's famed greenback cutthroat trout is in the process of making a remarkable comeback. There are now over 50 waters along the Colorado Front Range where fishermen can experience the thrill of catching this beautiful fish. Colorado Greenback Cutthroat Trout: A Fisherman's Guide will tell you about the biology, history, and the amazing recovery of the greenback, along with information on where and how to catch this unique and colorful fish. The survival of the greenback cutthroat now hinges on the combined efforts of state and federal agencies, wildlife organizations, and the volunteer work of numerous fishermen and citizens. This book is dedicated to those individuals and organizations, and to the premise that wild native trout such as the greenback are more than worth all of our conservation efforts.

Trophic Roles of Native Greenback Cutthroat Trout and Non-native Brook Trout in Montane Streams of Colorado
Trophic Roles of Native Greenback Cutthroat Trout and Non-native Brook Trout in Montane Streams of Colorado

Author:

Publisher:

Published: 2004

Total Pages: 171

ISBN-13: 9780496123599

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The greenback cutthroat trout (Oncorhynchus clarki stomias) is classified as a threatened subspecies under the U.S. Endangered Species Act. Non-native brook trout (Salvelinus fontinalis) displace greenback cutthroat trout in montane streams, but the mechanisms for displacement are not understood. In this study, data on population dynamics, body condition, and feeding ecology of greenback cutthroat and brook trout were used in investigating competition for food and predation as potential mechanisms for displacement of greenback cutthroat trout by brook trout. During 2000 and 2001, trout populations and physical habitat were surveyed at 10 stream reaches in the South Platte and Arkansas River drainages in Colorado. Study areas included sites with (1) cutthroat trout only, (2) brook trout only, (3) both species, and (4) both species with experimental removal of brook trout. Complementary techniques, including analysis of stomach contents, stomach fullness, body condition, and stable isotopes of C and N, were used to describe the trophic niche of each species across the 10 sites.