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: 2380
Symposium on the ecology of plague and its effects on wildlife: A model for translational research Symposium on the ecology of plague and its effects on wildlife: A model for translational research
No abstract available.
Authors
Michael F. Antolin, Dean E. Biggins, Pete Gober
Integrating Agriculture and Conservation Integrating Agriculture and Conservation
The USGS produces the needed science-based information to guide management actions and policy decisions that support wildlife habitat and other environmental services compatible with USDA conservation goals and farm operations. The Policy Analysis and Science Assistance Branch of the Fort Collins Science Center (FORT) has conducted research involving a national landowner survey and...
Authors
Mark W. Vandever
Behaviour of wintering Tundra Swans Cygnus columbianus columbianus at the Eel River delta and Humboldt Bay, California, USA Behaviour of wintering Tundra Swans Cygnus columbianus columbianus at the Eel River delta and Humboldt Bay, California, USA
Tundra Swan Cygnus columbianus columbinanus phenology and behaviour at the Eel River delta and southern Humboldt Bay in northern California, USA, is described. Counts made each January from 1963 onwards peaked at 1,502 swans in 1988. Monthly counts recorded during the 2006/07 and 2008/09 winters peaked in February, at 1,033 and 772 swans respectively. Swans roosted on ephemeral ponds at...
Authors
Jeffrey M. Black, Carol Gress, Jacob W. Byers, Emily Jennings, Craig R. Ely
Field evaluation of a two-dimensinal hydrodynamic model near boulders for habitat calculation Field evaluation of a two-dimensinal hydrodynamic model near boulders for habitat calculation
Two-dimensional hydrodynamic models are now widely used in aquatic habitat studies. To test the sensitivity of calculated habitat outcomes to limitations of such a model and of typical field data, bathymetry, depth and velocity data were collected for three discharges in the vicinity of two large boulders in the South Platte River (Colorado) and used in the River2D model. Simulated depth...
Authors
Terry Waddle
Restoration and revegetation associated with control of saltcedar and Russian olive: Chapter 7 Restoration and revegetation associated with control of saltcedar and Russian olive: Chapter 7
Rationales for controlling or eliminating saltcedar and Russian olive from sites, river reaches, or entire streams include implicit or explicit assumptions that natural recovery or applied restoration of native plant communities will follow exotic plant removal (McDaniel and Taylor, 2003; Quimby and others, 2003). The vegetation that replaces saltcedar and Russian olive after treatment (
Authors
Patrick B. Shafroth, David M. Merritt, Vanessa B. Beauchamp, Kenneth D. Lair
Bringing modeling to the masses: A web based system to predict potential species distributions Bringing modeling to the masses: A web based system to predict potential species distributions
Predicting current and potential species distributions and abundance is critical for managing invasive species, preserving threatened and endangered species, and conserving native species and habitats. Accurate predictive models are needed at local, regional, and national scales to guide field surveys, improve monitoring, and set priorities for conservation and restoration. Modeling...
Authors
Jim Graham, Greg Newman, Sunil Kumar, Catherine S. Jarnevich, Nick Young, Alycia W. Crall, Thomas J. Stohlgren, Paul Evangelista
Saving our shared birds: Partners in Flight tri-national vision for landbird conservation Saving our shared birds: Partners in Flight tri-national vision for landbird conservation
Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 species distributed across every major terrestrial habitat. Birds are indicators of environmental health; their populations track changes in habitat, water, disease, and climate. They are providers of invaluable ecosystem services, such as pest control, seed dispersal, and pollination. As the...
Authors
Humberto Berlanga, Judith A. Kennedy, Terrell D. Rich, Maria del Coro Arizmendi, Carol J. Beardmore, Peter J. Blancher, Gregory S. Butcher, Andrew R. Couturier, Ashley A. Dayer, Dean W. Demarest, Wendy E. Easton, Mary Gustafson, Eduardo E. Inigo-Elias, Elizabeth A. Krebs, Arvind O. Panjabi, Vicente Rodriguez Contreras, Kenneth V. Rosenberg, Janet M. Ruth, Eduardo Santana Castellon, Rosa Vidal, Tom Will
Unbiased survival estimates and evidence for skipped breeding opportunities in females Unbiased survival estimates and evidence for skipped breeding opportunities in females
1. Estimates of demographic parameters for females, in many organisms, are sparse. This is particularly worrisome as more and more species are faced with high extinction probabilities and conservation increasingly depends on actions dictated by complex predictive models that require accurate estimates of demographic parameters for each sex and species. 2. This study assesses demographic...
Authors
Erin L. Muths, Rick D. Scherer, Brad A. Lambert
A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments
Elemental (C, N, Pb) and isotopic (δ13C, δ15N) measurements of cored sediment from a small bog in northern New Mexico reveal changes in climate during the Late Pleistocene and Holocene. Abrupt increases in Pb concentration and δ13C values ca. 14 420 cal. YBP indicate significant runoff to the shallow lake that existed at that time. Weathering and transport of local volcanic rocks...
Authors
L. M. Cisneros-Dozal, J.M. Heikoop, J. Fessenden, R. Scott Anderson, P.A. Meyers, Craig D. Allen, M. Hess, T. Larson, G. Perkins, M. Rearick
From points to forecasts: Predicting invasive species habitat suitability in the near term From points to forecasts: Predicting invasive species habitat suitability in the near term
We used near-term climate scenarios for the continental United States, to model 12 invasive plants species. We created three potential habitat suitability models for each species using maximum entropy modeling: (1) current; (2) 2020; and (3) 2035. Area under the curve values for the models ranged from 0.92 to 0.70, with 10 of the 12 being above 0.83 suggesting strong and predictable...
Authors
Tracy R. Holcombe, Thomas J. Stohlgren, Catherine S. Jarnevich
Enzootic plague reduces black-footed ferret (Mustela nigripes) survival in Montana Enzootic plague reduces black-footed ferret (Mustela nigripes) survival in Montana
Black-footed ferrets (Mustela nigripes) require extensive prairie dog colonies (Cynomys spp.) to provide habitat and prey. Epizootic plague kills both prairie dogs and ferrets and is a major factor limiting recovery of the highly endangered ferret. In addition to epizootics, we hypothesized that enzootic plague, that is, presence of disease-causing Yersinia pestis without any noticeable...
Authors
Marc R. Matchett, Dean E. Biggins, Valerie Carlson, Bradford Powell, Tonie E. Rocke
Resolving disputes over science in natural resource agency decisionmaking Resolving disputes over science in natural resource agency decisionmaking
Natural resource agencies make decisions involving public resources in which the public, by definition, have a stake. These resources are often finite. Thus, different viewpoints, interests, or beliefs may conflict when parties are perceived to be interdependent or one party is perceived to block or oppose other parties' use of a scarce resource. These confl icts may occur regard less of...
Authors
Emily Ruell, Nina Burkardt, Douglas R. Clark