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Keyword: watershed

Forests of the Northern United States

Publications Posted on: February 27, 2012
Bounded by Maine, Maryland, Missouri, and Minnesota, the 20 Northern States have a larger population and a higher proportion of forest cover than other comparably sized U.S. regions.

Watershed-management aspects of thinned young lodgepole pine stands

Publications Posted on: May 02, 2011
The central section of the Rocky Mountains within Colorado and Wyoming is an important water-yielding area. Stream flow which originates in the mountains supplies water for irrigation, power generation, and domestic use. The actual source of most of this water is located above 8,000 feet in elevation. Here snows are heavy and water yields run as high as 24 inches per year.

The effect of partial and clearcutting on streamflow at Deadhorse Creek, Colorado

Publications Posted on: May 02, 2011
Two subalpine forest subdrainages of Deadhorse Creek, Colarado, USA were used to demonstrate the comparable impact on water yield of two tree-harvesting practices. Of the 40 ha North Fork subdrainage 36% was clearcut commercially using five-tree height circular openings. In contrast, 40% of the basal area on the 41 ha Unit 8 was removed by partial cutting in the first step of a three-step shelterwood cut.

Effects of wildfire on stream temperatures in the Bitterroot River basin, Montana

Publications Posted on: April 04, 2011
Wildfire is a common natural disturbance that can influence stream ecosystems. Of particular concern are increases in water temperature during and following fires, but studies of these phenomena are uncommon. We examined effects of wildfires in 2000 on maximum water temperature for a suite of second- to fourth-order streams with a range of burn severities in the Bitterroot River basin, Montana.

Geomorphic controls on Great Basin riparian vegetation at the watershed and process zone scales

Publications Posted on: September 13, 2010
Riparian ecosystems supply valuable resources in all landscapes, but especially in semiarid regions such as the Great Basin of the western United States. Over half of Great Basin streams are thought to be in poor ecological condition and further deterioration is of significant concern to stakeholders.

Future of the Middle Rio Grande

Publications Posted on: August 06, 2010
Because decisions made today about the Middle Rio Grande will influence future conditions, symposium participants - the stakeholders - collaborated in a final session to plan improvements for the watershed and river corridor. The result included several action plans focusing on desired future conditions and actions to achieve them.

Native montane fishes of the Middle Rio Grande Ecosystem: Status, threats, and conservation

Publications Posted on: August 06, 2010
Between 1994 and 1997, research was conducted on three native, montane species of the Middle Rio Grande Ecosystem, in the Carson and Santa Fe national forests. The focus of study was on abiotic and biotic factors that affected status, distribution, biology and habitat of these species.

Use of saltcedar vegetation by landbirds migrating through the Bosque Del Apache National Wildlife Refuge

Publications Posted on: August 06, 2010
We compared diversity, abundance and energetic condition of migrant landbirds captured in four different vegetation types in the Bosque del Apache National Wildlife Refuge. We found lower species diversity among migrants caught in exotic saltcedar vegetation than in native willow or cottonwood. In general, Migrants were most abundant in agricultural edge and least abundant in cottonwood.

Arthropods of native and exotic vegetation and their association with willow flycatchers and Wilson's warblers

Publications Posted on: August 06, 2010
We compared abundance of migrating Willow Flycatchers and Wilson's Warblers to the abundance of arthropods in exotic and native vegetation at Bosque del Apache National Wildlife Refuge. We trapped arthropods using glue-boards in 1996 and 1997 in the same cottonwood, saltcedar, and willow habitats where we mist-netted birds during spring and fall migration. There were fewer arthropods, particularly flies, in saltcedar.

Riparian dependence, biogeographic status, and likelihood of endangerment in landbirds of the Southwest

Publications Posted on: August 06, 2010
Riparian habitats and wetlands represent less than 2 percent of the land area of the Southwest, but they support the highest density and abundance of plants and animals in that region (Dahms and Geils 1997).