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: 2401
U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative - 2013 Annual Report U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative - 2013 Annual Report
This is the sixth report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual activities conducted by USGS for addressing specific management needs identified by WLCI partners. In FY2013, there were 25 ongoing and new projects conducted by the USGS. These projects fall into 8 major categories: (1) synthesizing and...
Authors
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Carleton R. Bern, Laura R Biewick, Gregory K. Boughton, Anna D. Chalfoun, Geneva W. Chong, Marie K. Dematatis, Bradley C. Fedy, Steven L. Garman, Steve Germaine, Matthew G. Hethcoat, Collin G. Homer, Christopher Huber, Matthew J. Kauffman, Natalie Latysh, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Christopher J. Potter, Spencer Schell, Michael J. Sweat, Annika W. Walters, Anna B. Wilson
Invasive Brown Treesnake movements at road edges indicate road-crossing avoidance Invasive Brown Treesnake movements at road edges indicate road-crossing avoidance
Roads have significant impacts on the dispersal of wildlife. Although this poses a threat to the abundance and diversity of desirable flora and fauna, it also affords some opportunity for enhancing control of invasive species. Roads are the most common terrain features that may affect the rate of landscape-scale movements of invasive Brown Treesnakes (Boiga irregularis) throughout Guam...
Authors
Shane R. Siers, Julie S Savidge, Robert N. Reed
Python molurus bivittatus (Burmese python). Minimum size at maturity Python molurus bivittatus (Burmese python). Minimum size at maturity
No abstract available.
Authors
John D Willson, Ray W Snow, Robert N. Reed, Michael E Dorcas
From hybrid swarms to swarms of hybrids From hybrid swarms to swarms of hybrids
Science has shown that the introgression or hybridization of modern humans (Homo sapiens) with Neanderthals up to 40,000 YBP may have led to the swarm of modern humans on earth. However, there is little doubt that modern trade and transportation in support of the humans has continued to introduce additional species, genotypes, and hybrids to every country on the globe. We assessed the...
Authors
Thomas J. Stohlgren, Allen L. Szalanski, John F. Gaskin, Nicholas E. Young, Amanda M. West, Catherine S. Jarnevich, Amber Tripodi
Seasonal shifts in the diet of the big brown bat (Eptesicus fuscus), Fort Collins, Colorado Seasonal shifts in the diet of the big brown bat (Eptesicus fuscus), Fort Collins, Colorado
Recent analyses suggest that the big brown bat (Eptesicus fuscus) may be less of a beetle specialist (Coleoptera) in the western United States than previously thought, and that its diet might also vary with temperature. We tested the hypothesis that big brown bats might opportunistically prey on moths by analyzing insect fragments in guano pellets from 30 individual bats (27 females and...
Authors
Ernest W. Valdez, Thomas J. O’Shea
Combined global change effects on ecosystem processesin nine U.S. topographically complex areas Combined global change effects on ecosystem processesin nine U.S. topographically complex areas
Concurrent changes in climate, atmospheric nitrogen (N) deposition, and increasing levels of atmospheric carbon dioxide (CO2) affect ecosystems in complex ways. The DayCent-Chem model was used to investigate the combined effects of these human-caused drivers of change over the period 1980–2075 at seven forested montane and two alpine watersheds in the United States. Net ecosystem...
Authors
Melannie D. Hartman, Jill S. Baron, Holly A. Ewing, Kathleen Weathers
Interactive energy atlas for Colorado and New Mexico: an online resource for decisionmakers Interactive energy atlas for Colorado and New Mexico: an online resource for decisionmakers
Throughout the western United States, increased demand for energy is driving the rapid development of nonrenewable and renewable energy resources. Resource managers must balance the benefits of energy development with the potential consequences for ecological resources and ecosystem services. To facilitate access to geospatial data related to energy resources, energy infrastructure, and...
Authors
Natasha B. Carr, Drew A. Ignizio, James E. Diffendorfer, Natalie Latysh, Ann Marie Matherne, Joshua I. Linard, Kenneth J. Leib, Sarah J. Hawkins
Wyoming Basin Rapid Ecoregional Assessment: Work Plan Wyoming Basin Rapid Ecoregional Assessment: Work Plan
The overall goal of the Rapid Ecoregional Assessments (REAs) being conducted for the Bureau of Land Management (BLM) is to provide information that supports regional planning and analysis for the management of ecological resources. The REA provides an assessment of baseline ecological conditions, an evaluation of current risks from drivers of ecosystem change, and a predictive capacity...
Authors
Natasha B. Carr, Steven L. Garman, Annika Walters, Andrea Ray, Cynthia P. Melcher, Jeff S. Wesner, Michael S. O’Donnell, Kirk R. Sherrill, Nils C. Babel, Zachary H. Bowen
Genetic characterization of the Pacific sheath-tailed bat (Emballonura semicaudata rotensis) using mitochondrial DNA sequence data Genetic characterization of the Pacific sheath-tailed bat (Emballonura semicaudata rotensis) using mitochondrial DNA sequence data
Emballonura semicaudata occurs in the southwestern Pacific and populations on many islands have declined or disappeared. One subspecies (E. semicaudata rotensis) occurs in the Northern Mariana Islands, where it has been extirpated from all but 1 island (Aguiguan). We assessed genetic similarity between the last population of E. s. rotensis and 2 other subspecies, and examined genetic...
Authors
Sara J. Oyler-McCance, Ernest W. Valdez, Thomas J. O’Shea, Jennifer A. Fike
Users, uses, and value of Landsat satellite imagery: results from the 2012 survey of users Users, uses, and value of Landsat satellite imagery: results from the 2012 survey of users
Landsat satellites have been operating since 1972, providing a continuous global record of the Earth’s land surface. The imagery is currently available at no cost through the U.S. Geological Survey (USGS). Social scientists at the USGS Fort Collins Science Center conducted an extensive survey in early 2012 to explore who uses Landsat imagery, how they use the imagery, and what the value...
Authors
Holly M. Miller, Leslie A. Richardson, Stephen R. Koontz, John Loomis, Lynne Koontz
Mercury in gray wolves (Canis lupus) in Alaska: Increased exposure through consumption of marine prey Mercury in gray wolves (Canis lupus) in Alaska: Increased exposure through consumption of marine prey
Mercury (Hg) bioaccumulates in the tissues of organismsand biomagnifies within food-webs. Graywolves (Canis lupus) in Alaska primarily acquire Hg through diet; therefore, comparing the extent of Hg exposure inwolves, in conjunction with stable isotopes, from interior and coastal regions of Alaska offers important insight into their feeding ecology. Liver, kidney, and skeletal muscle...
Authors
Ashley K. McGrew, Lora R. Ballweber, Sara K. Moses, Craig A. Stricker, Kimberlee B. Beckmen, Mo D. Salman, Todd M. O’Hara
American badgers selectively excavate burrows in areas used by black-footed ferrets: implications for predator avoidance American badgers selectively excavate burrows in areas used by black-footed ferrets: implications for predator avoidance
We evaluated how American badgers (Taxidea taxus) might exert selective pressure on black-footed ferrets (Mustela nigripes) to develop antipredator defenses. In a colony of black-tailed prairie dogs (Cynomys ludovicianus) in South Dakota, badgers concentrated their activities where burrow openings and prairie dogs were abundant, a selective behavior that was exhibited by ferrets in the...
Authors
David A. Eads, Dean E. Biggins, Travis M. Livieri, Joshua J. Millspaugh