Publications
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
SALMOD: A population model for salmonids: user's manual. Version W3 SALMOD: A population model for salmonids: user's manual. Version W3
SALMOD is a computer model that simulates the dynamics of freshwater salmonid populations, both anadromous and resident. The conceptual model was developed in a workshop setting (Williamson et al. 1993) using fish experts concerned with Trinity River chinook restoration. The model builds on the foundation laid by similar models (see Cheslak and Jacobson 1990). The model’s premise that...
Authors
John Bartholow, John Heasley, Jeff Laake, Jeff Sandelin, Beth A.K. Coughlan, Alan Moos
Selection of nesting habitat by sharp-tailed grouse in the Nebraska sandhills Selection of nesting habitat by sharp-tailed grouse in the Nebraska sandhills
We evaluated nesting habitat selection (disproportionate use compared to availability) by plains sharp-tailed grouse (Tympanuchus phasianellus jamesi) on rangelands grazed by cattle (Bos taurus) relative to height, density, and heterogeneity of residual herbaceous vegetation remaining from previous growing seasons. Residual cover is critical for nesting sharp-tailed grouse and can be...
Authors
Bart L. Prose, Brian S. Cade, Dale Hein
Invasive plant species: Inventory, mapping, and monitoring - A national strategy Invasive plant species: Inventory, mapping, and monitoring - A national strategy
America is under siege by invasive species of plants and animals, and by diseases. The current environmental, economic, and health-related costs of invasive species could exceed $138 billion per year-more than all other natural disasters combined. Notorious examples include West Nile virus, Dutch elm disease, chestnut blight, and purple loose- strife in the Northeast; kudzu, Brazilian...
Authors
J. Larry Ludke, Frank D’Erchia, Jan Coffelt, Leanne Hanson
A new species of Echinosaura (Gymnophthalmidae) from Ecuador and Colombia with comments on other members of the genus and Teuchocercus keyi A new species of Echinosaura (Gymnophthalmidae) from Ecuador and Colombia with comments on other members of the genus and Teuchocercus keyi
A new species of the genus Echinosaura is described from the Pacific drainages of northern Ecuador and adjacent Colombia. Evaluation of variation among congeners justifies their recognition as distinct species instead of subspecies as previously proposed. The new lizard occurs in close proximity to Echinosaura horrida and Teuchocercus keyi.
Authors
T. H. Fritts, A. Almendariz, S. Samec
Planning for the conservation and development of infrastructure resources in urban areas-Colorado front range urban corridor: Things planners, decision-makers, and the public should know Planning for the conservation and development of infrastructure resources in urban areas-Colorado front range urban corridor: Things planners, decision-makers, and the public should know
This Circular provides a basic understanding of the characteristics, location, distribution, and quality of infrastructure resources (natural aggregate, energy, and water) in the Colorado Front Range urban corridor between Denver and Ft. Collins. With this understanding, the reader explores the many factors that affect the current and future availability of those resources, including the
Authors
Belinda F. Arbogast, L. Rick Arnold, Neil S. Fishman, William H. Langer, Carol S. Mladinich, James E. Roelle, David R. Wilburn
Avian responses to late-season grazing in a shrub-willow floodplain Avian responses to late-season grazing in a shrub-willow floodplain
Riparian vegetation in western North America provides important habitat for breeding birds and valuable forage for grazing livestock. Whereas a number of studies have documented the response of riparian vegetation to the removal of cattle, few have experimentally evaluated specific grazing systems. We evaluated the responses of vegetation and breeding birds to two cycles of late-season...
Authors
T.R. Stanley, F.L. Knopf
Differences in Englemann spruce forest biogeochemistry east and west of the Continental Divide in Colorado, USA Differences in Englemann spruce forest biogeochemistry east and west of the Continental Divide in Colorado, USA
We compared Englemann spruce biogeochemical processes in forest stands east and west of the Continental Divide in the Colorado Front Range. The divide forms a natural barrier for air pollutants such that nitrogen (N) emissions from the agricultural and urban areas of the South Platte River Basin are transported via upslope winds to high elevations on the east side but rarely cross over...
Authors
H.M. Rueth, Jill Baron
Patterns of rodent abundance on open-space grasslands in relation to suburban edges Patterns of rodent abundance on open-space grasslands in relation to suburban edges
Relatively little is known about the response of grassland rodent populations to urban and suburban edges. We live-trapped rodents for three summers on 65 3.1-ha grassland plots on open space of the city of Boulder, Colorado, and compared capture rates among species according to habitat type, percentage of the 40 ha surrounding each plot that was suburbanized, and proximity to a suburban...
Authors
C.E. Bock, K.T. Vierling, S.L. Haire, J.D. Boone, W.W. Merkle
Attitudes, values and perceptions of National Wildlife Refuge managers and biologists Attitudes, values and perceptions of National Wildlife Refuge managers and biologists
No abstract available.
Authors
Ayeisha A. Brinson
The heart of the Rockies: Montane and subalpine ecosystems The heart of the Rockies: Montane and subalpine ecosystems
No abstract available.
Authors
T.J. Stohlgren, T.T. Veblen, K.C. Kendall, W.L. Baker, Craig D. Allen, J.A. Logan, K.C. Ryan