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FORT scientists have produced more than 2000 peer reviewed publications that are registered in the USGS Publications Warehouse, along with many others prior to their work at the USGS or in conjunction with other government agencies.

Filter Total Items: 2376

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January 1, 1995

Ecosystem trends in the Colorado Rockies Ecosystem trends in the Colorado Rockies

Biological conservation is increasingly moving toward an ecosystem and landscape approach, recognizing the prohibitive cost and difficulty of a species-by-species approach (LaRoe 1993). Also, statewide (e.g., Gap Analysis Program) and national surveys (e.g., Environmental Monitoring and Assessment Program or EMAP) are conducted at a scale and level of resolution that do not meet the...

Authors

Thomas J. Stohlgren, Jill S. Baron, Timothy G.F. Kittel, Dan Binkley

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Loch Vale Watershed methods manual Loch Vale Watershed methods manual

No abstract available.

Authors

B. Newkirk, Jill Baron, E.J. Allstott

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Effects of salinity on establishment of Populus fremontii (cottonwood) and Tamarix ramosissima (saltcedar) Effects of salinity on establishment of Populus fremontii (cottonwood) and Tamarix ramosissima (saltcedar)

No abstract available.

Authors

P.B. Shafroth, J.M. Friedman, L.S. Ischinger

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Geomorphic requirements for establishment and maintenance of cottonwood forest Geomorphic requirements for establishment and maintenance of cottonwood forest

No abstract available.

Authors

J.M. Friedman, G.T. Auble, M. L. Scott

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Effects of salinity on establishment of Populus fremontii (cottonwood) and Tamarix ramosissima (saltcedar) in southwestern United States Effects of salinity on establishment of Populus fremontii (cottonwood) and Tamarix ramosissima (saltcedar) in southwestern United States

The exotic shrub Tamarix ramosissima (saltcedar) has replaced the native Populus fremontii(cottonwood) along many streams in southwestern United States. We used a controlled outdoor experiment to examine the influence of river salinity on germination and first year survival of P. fremontii var. wislizenii (Rio Grande cottonwood) and T. ramosissima on freshly deposited alluvial bars. We...

Authors

Patrick B. Shafroth, Jonathan M. Friedman, Lee S. Ischinger

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Activity rhythms and distribution of natal dens for red foxes Activity rhythms and distribution of natal dens for red foxes

The red fox, Vulpes vulpes, was investigated with snow tracking, radiotracking and directive observation at the Haibei Research Station of Alpine Meadow Ecosystem, Academia Sinica, from March to September 1994. The objectives of this study were to determine the distribution and use of natal dens, activity rhythms, and home range sizes for the foxes.

Authors

Zhou Wenyang, Wei Wanhong, Dean E. Biggins

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Induced root-suckering shows potential for reestablishing riparian trees (New Mexico) Induced root-suckering shows potential for reestablishing riparian trees (New Mexico)

No abstract available.

Authors

L.S. Ischinger, P.B. Shafroth

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Regeneration processes and conservation of riparian forests in the Great Plains Regeneration processes and conservation of riparian forests in the Great Plains

No abstract available.

Authors

G.T. Auble, J.M. Friedman, M. L. Scott

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1995

Pinyon-juniper woodlands Pinyon-juniper woodlands

Pinyon-juniper woodlands are one of the largest ecosystems in the Southwest and in the Middle Rio Grande Basin (Fig. 1). The woodlands have been important to the region's inhabitants since prehistoric times for a variety of natural resources and amenities. The ecosystems have not been static; their distributions, stand characteristics, and site conditions have been altered by changes in...

Authors

Gerald J. Gottfried, Thomas W. Swetnam, Craig D. Allen, Julio L. Betancourt, Alice L. Chung-MacCoubrey

Ecosystems Mission Area, Fort Collins Science Center

June 1, 1994

An assessment of riparian environmental quality by using butterflies and disturbance susceptibility scores An assessment of riparian environmental quality by using butterflies and disturbance susceptibility scores

The butterfly community at a revegetated riparian site on the lower Colorado River near Parker, Arizona, was compared to that found in a reference riparian site. Data indicated that the herbaceous plant community, which was lacking at the revegetated site, was important to several butterfly taxa. An index using butterfly sensitivity to habitat change (species classified into risk groups)...

Authors

S. Mark Nelson, Douglas C. Andersen

Ecosystems Mission Area, Fort Collins Science Center

March 1, 1994

Are cicadas (Diceroprocta apache) both a "keystone" and a "critical-link" species in lower Colorado River riparian communities? Are cicadas (Diceroprocta apache) both a "keystone" and a "critical-link" species in lower Colorado River riparian communities?

Apache cicada (Homoptera: Cicadidae: Diceroprocta apache Davis) densities were estimated to be 10 individuals/m2 within a closed-canopy stand of Fremont cottonwood (Populus fremontii) and Goodding willow (Salix gooddingii) in a revegetated site adjacent to the Colorado River near Parker, Arizona. Coupled with data drawn from the literature, I estimate that up to 1.3 cm (13 1/m2) of water...

Authors

Douglas C. Andersen

Ecosystems Mission Area, Fort Collins Science Center

January 1, 1994

Ecological perspective: Linking ecology, GIS, and remote sensing to ecosystem management Ecological perspective: Linking ecology, GIS, and remote sensing to ecosystem management

Awareness of significant human impacts on the ecology of Earth's landscapes is not new (Thomas 1956). Over the past decade (Forman and Godron 1986, Urban et a1. 1987) applications of geographic information systems (GIS) and remote sensing technologies have supported a rapid rise in landscape.stale research. The heightened recognition within the research community of the ecological...

Authors

Craig D. Allen

Ecosystems Mission Area, Fort Collins Science Center