Catalog Search Results
Pub. Date
2017.
Description
Black-footed ferret, a keystone species, release after an intense breeding program to bring the species back from the brink of extinction. Landowners who allow the ferrets to be released on their land make releases possible. As the ferrets hunt prairie dogs, releasing the ferrets help bring the grassland system back into harmony.
Author
Pub. Date
1984.
Description
A morphological and hydraulic investigation of the cobble substrate reach of the Yampa River was conducted to determine the natural conditions and processes of the observed spawning habitat of the Colorado squawfish Ptychocheilus lucius. Recent studies conducted by the US Fish and Wildlife Service (USFWS) and the Colorado Division of Wildlife (CDOW) have concluded that the cobble substrate reach (River Mile 10 to 19) of the Yampa River in Dinosaur...
Author
Pub. Date
2007.
Description
This project addressed movement of nonnative fish into river reaches of critical habitat for endangered fishes from floodplain habitats. Nonnative fishes of the Family Centrarchidae are known to occur in floodplain ponds, backwaters, beaver ponds, washes and irrigation drainage ditches throughout the Grand Valley reach of the Colorado River. The primary objectives of this project were to determine whether the origins and movements of centrarchids...
Author
Pub. Date
2010.
Description
This report investigates the role of instream flows as part of a program to protect and recover certain water-dependent endangered species. For the purposes of this report, instream flows are defined as non-consumptive, in-channel flows of water. We examined two case studies of endangered fish species programs that included instream flows, one on the upper Colorado River and one on the San Juan River. Cost savings with cooperative recovery programs...
Author
Pub. Date
2001.
Description
Native fishes of the upper Colorado River UCR basin are declining in abundance. Alteration of the natural riverine environment during the last 100 years by human actions including physical alterations and the introduction of nonnative species. Changes in the physical and biological characteristics of riverine habitat have contributed to the endangerment of four native fish species Colorado (pikeminnow, humpback chub, bonytail, and razorback sucker)....
Author
Pub. Date
1999.
Description
Native fishes of the upper Colorado River UCR basin are declining in abundance. The most likely cause of their decline is anthropogenic alteration of the natural environment. Habitat of the native Colorado River fishes has been changed greatly during the last 100 years by human actions including physical alterations and the introduction of nonnative species. Changes in the physical and biological characteristics of riverine habitat have contributed...
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