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: 2379
Associations of wintering birds with habitat in semidesert and plains grasslands in Arizona Associations of wintering birds with habitat in semidesert and plains grasslands in Arizona
We studied associations with winter habitat for seven species of birds, one species-group (eastern and western meadowlarks combined), and total sparrows at seven sites in the semidesert and plains grasslands of southeastern Arizona from 1999–2001, sampling with mist-nets and survey-transects. We measured structure and composition of vegetation, assessing vegetative differences among...
Authors
Janet M. Ruth, Thomas R. Stanley, Caleb E. Gordon
Cross-ecosystem impacts of stream pollution reduce resource and contaminant flux to riparian food webs Cross-ecosystem impacts of stream pollution reduce resource and contaminant flux to riparian food webs
The effects of aquatic contaminants are propagated across ecosystem boundaries by aquatic insects that export resources and contaminants to terrestrial food webs; however, the mechanisms driving these effects are poorly understood. We examined how emergence, contaminant concentration, and total contaminant flux by adult aquatic insects changed over a gradient of bioavailable metals in...
Authors
Johanna M. Kraus, Travis S. Schmidt, David Walters, Richard B. Wanty, Robert E. Zuellig, Ruth E. Wolf
Climate, not atmospheric deposition, drives the biogeochemical mass-balance of a mountain watershed Climate, not atmospheric deposition, drives the biogeochemical mass-balance of a mountain watershed
Watershed mass-balance methods are valuable tools for demonstrating impacts to water quality from atmospheric deposition and chemical weathering. Owen Bricker, a pioneer of the mass-balance method, began applying mass-balance modeling to small watersheds in the late 1960s and dedicated his career to expanding the literature and knowledge of complex watershed processes. We evaluated long...
Authors
Jill S. Baron, Jared Heath
Large scale Wyoming transportation data: a resource planning tool Large scale Wyoming transportation data: a resource planning tool
The U.S. Geological Survey Fort Collins Science Center created statewide roads data for the Bureau of Land Management Wyoming State Office using 2009 aerial photography from the National Agriculture Imagery Program. The updated roads data resolves known concerns of omission, commission, and inconsistent representation of map scale, attribution, and ground reference dates which were...
Authors
Michael S. O'Donnell, Tammy S. Fancher, Aaron T. Freeman, Abra E. Ziegler, Zachary H. Bowen, Cameron L. Aldridge
Understanding thermodynamic relationships and geochemical mass balances from catchment to coast: A tribute to the life and career of Owen P. Bricker III Understanding thermodynamic relationships and geochemical mass balances from catchment to coast: A tribute to the life and career of Owen P. Bricker III
This special volume of aquatic geochemistry is dedicated to the memory of Owen Peterson Bricker III (1936–2011) and serves as a tribute to his life and career. Owen had a distinguished and productive research career in both academics at Johns Hopkins University (Fig. 1) and as a public servant with the Maryland Geological Survey, the US Environmental Protection Agency, and the US...
Authors
Suzanne B. Bricker, Fred T. Mackenzie, Jill Baron, Jason Price
Animal reintroductions: an innovative assessment of survival Animal reintroductions: an innovative assessment of survival
Quantitative evaluations of reintroductions are infrequent and assessments of milestones reached before a project is completed, or abandoned due to lack of funding, are rare. However, such assessments, which are promoted in adaptive management frameworks, are critical. Quantification can provide defensible estimates of biological success, such as the number of survivors from a released...
Authors
Erin L. Muths, Larissa L. Bailey, Mary Kay Watry
The effects of atmospheric nitrogen deposition on terrestrial and freshwater biodiversity The effects of atmospheric nitrogen deposition on terrestrial and freshwater biodiversity
This chapter reports the findings of a Working Group on how atmospheric nitrogen (N) deposition affects both terrestrial and freshwater biodiversity. Regional and global scale impacts on biodiversity are addressed, together with potential indicators. Key conclusions are that: the rates of loss in biodiversity are greatest at the lowest and initial stages of N deposition increase; changes...
Authors
Jill Baron, Mary C. Barber, Mark Adams, Julius I. Agboola, Edith B. Allen, William J. Bealey, Roland Bobbink, Maxim V. Bobrovsky, William D. Bowman, Cristina Branquinho, Mercedes M. C. Bustamente, Christopher L. Clark, Edward C. Cocking, Cristina Cruz, Eric A. Davidson, O. Tom Denmead, Teresa Dias, Nancy B. Dise, Alan Feest, James N. Galloway, Linda H. Geiser, Frank S. Gilliam, Ian J. Harrison, Larisa G. Khanina, Xiankai Lu, Esteban Manrique, Raul Ochoa-Hueso, Jean P. H. B. Ometto, Richard Payne, Thomas Scheuschner, Lucy J. Sheppard, Gavin L. Simpson, Y. V. Singh, Carly J. Stevens, Ian Strachan, Harald Sverdrup, Naoko Tokuchi, Hans van Dobben, Sarah Woodin
Spatial mapping and attribution of Wyoming wind turbines, 2012 Spatial mapping and attribution of Wyoming wind turbines, 2012
These data represent locations of wind turbines found within Wyoming as of August 2012. We assigned each wind turbine to a wind farm and, in these data, provide information about each turbine’s potential megawatt output, rotor diameter, hub height, rotor height, the status of the land ownership where the turbine exists, the county each turbine is located in, wind farm power capacity, the...
Authors
Michael S. O'Donnell, Tammy S. Fancher
Ecological feedbacks can reduce population-level efficacy of wildlife fertility control Ecological feedbacks can reduce population-level efficacy of wildlife fertility control
1. Anthropogenic stress on natural systems, particularly the fragmentation of landscapes and the extirpation of predators from food webs, has intensified the need to regulate abundance of wildlife populations with management. Controlling population growth using fertility control has been considered for almost four decades, but nearly all research has focused on understanding effects of...
Authors
Jason I. Ransom, Jenny G. Powers, N. Thompson Hobbs, Dan L. Baker
Hybridization of an invasive shrub affects tolerance and resistance to defoliation by a biological control agent Hybridization of an invasive shrub affects tolerance and resistance to defoliation by a biological control agent
Evolution has contributed to the successful invasion of exotic plant species in their introduced ranges, but how evolution affects particular control strategies is still under evaluation. For instance, classical biological control, a common strategy involving the utilization of highly specific natural enemies to control exotic pests, may be negatively affected by host hybridization...
Authors
Wyatt I. Williams, Jonathan M. Friedman, John F. Gaskin, Andrew P. Norton
Effects of soil temperature and depth to ground water on first-year growth of a dryland riparian phreatophyte, Glycyrrhiza lepidota (American licorice) Effects of soil temperature and depth to ground water on first-year growth of a dryland riparian phreatophyte, Glycyrrhiza lepidota (American licorice)
We investigated the effects of soil temperature and depth to ground water on first-year growth of a facultative floodplain phreatophyte, Glycyrrhiza lepidota, in a 2-×-2 factorial greenhouse experiment. We grew plants in mesocosms subirrigated with water low in dissolved oxygen, mimicking natural systems, and set depth of ground water at 63 or 100 cm and soil temperature at cold (ambient...
Authors
Douglas C. Andersen, S. Mark Nelson
Climate change collaboration among natural resource management agencies: lessons learned from two US regions Climate change collaboration among natural resource management agencies: lessons learned from two US regions
It has been argued that regional collaboration can facilitate adaptation to climate change impacts through integrated planning and management. In an attempt to understand the underlying institutional factors that either support or contest this assumption, this paper explores the institutional factors influencing adaptation to climate change at the regional scale, where multiple public...
Authors
Christopher J. Lemieux, Jessica Thompson, D. Scott Slocombe, Rudy Schuster