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Predicting persistence of Rio Grande Cutthroat Trout populations in an uncertain future
The Rio Grande Cutthroat Trout Oncorhynchus clarkii virginalis (RGCT) occupies just 12% of its ancestral range. As the southernmost subspecies of Cutthroat Trout, we expect a warming climate to bring additional stressors to RGCT populations, such as…

Using genetic diversity to inform conservation efforts for native Cutthroat Trout of the Southern Rocky Mountains
Recent research on native Cutthroat Trout Oncorhynchus clarkii of the southern Rocky Mountains suggests a convoluted taxonomy confused by stocking in the early 1900s that obscured the native distributions of these fish.  DNA recovered from the few…

Using digital photographs and pattern recognition to identify individual boreal toads (Anaxyrus boreas boreas)
Individual identification of animals can provide an array ofuseful capture-mark-recapture information, allowing researchers to estimate survival, movement, abundance, recruitment, and capture probability (Williams et al. 2002). This information can…

Interactions of Zooplankton, Mysis relicta, and Kokanees in Lake Granby, Colorado
Abstract. In studies of zooplankton and kokanees Oncorhynchus nerka in Lake Granby, Colorado, conducted from 1981 to 1983, we investigated the suspected role of introduced Mysis relicta in the decline of the kokanee sport fishery and egg take. Mysis…

Restoration of riparian vegetation on a mountain river degraded by historical mining and grazing
Riparian ecosystems in montane areas have been degraded by mining, streamflow alterations, and livestock grazing. Restoration of ecological and economic functions, especially in high-elevation watersheds that supply water to lower elevation urban and…

From gold mining to gold medal fishery: evaluating the fishery response to stream restoration on the Upper Arkansas River in Colorado
Over a century of metals pollution and channel disturbance associated with historical mining, land use, and water development contributed to degradation of aquatic and riparian habitat within the upper Arkansas River watershed near Leadville,…

Effects of willow nutrition and morphology on calving success of moose
Across much of North America, populations of moose (Alces alces) are declining because of disease, predation, climate change, and anthropogenic-driven habitat loss. Contrary to this trend, populations of moose in Colorado, USA, have continued to…

Dual resistance to Flavobacterium psychrophilum and Myxobolus cerebralis in rainbow trout (Oncorhynchus mykiss, Walbaum)
Aquatic pathogens are a major concern for fish hatchery production, fisheries management, and conservation, and disease control needs to be addressed. Two important salmonid pathogens are Myxobolus cerebralis and Flavobacterium psychrophilum that…

Use of predictive distribution models to describe habitat selection by bats in Colorado, USA
Numerous processes operating at landscape scales threaten bats (e.g., habitat loss, disease). Temperate bat species are rarely examined at commensurate scales because of logistical and modeling constraints. Recent modeling approaches now allow for…

Building a systems framework to facilitate adaptive organizational change in state fish and wildlife agencies
State fish and wildlife agencies in the United States are confronted with the realities of a rapidly changing society. With declines in historical sources of revenue and the growth of diverse voices with values that differ from those emphasized by…
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