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: 2408
Do two wrongs make a right? Persistent uncertainties regarding environmental selenium-mercury interactions Do two wrongs make a right? Persistent uncertainties regarding environmental selenium-mercury interactions
Mercury (Hg) is a pervasive environmental pollutant and contaminant of concern for both people and wildlife that has been a focus of environmental remediation efforts for decades. A growing body of literature has motivated calls for revising Hg consumption advisories to co-consider selenium (Se) levels in seafood and implies that remediating aquatic ecosystems with ecosystem-scale Se...
Authors
Jacqueline R. Gerson, David Walters, Collin A. Eagles-Smith, Emily S. Bernhardt, Jessica E Brandt
The role of warm, dry summers and variation in snowpack on phytoplankton dynamics in high-elevation lakes The role of warm, dry summers and variation in snowpack on phytoplankton dynamics in high-elevation lakes
Abstract Climate change is altering biogeochemical, metabolic, and ecological functions in lakes across the globe. Historically, mountain lakes in temperate regions have been unproductive due to brief ice-free seasons, a snowmelt-driven hydrograph, cold temperatures, and steep topography with low vegetation and soil cover. We tested the relative importance of winter and summer weather...
Authors
Isabella A. Oleksy, Whitney Beck, R. Lammers, Cara Steger, Cody Wilson, Kyle Christensen, Kim Vincent, Pieter Johnson, Jill Baron
Validating deployment of aerially delivered toxic bait cartridges for control of invasive brown treesnakes Validating deployment of aerially delivered toxic bait cartridges for control of invasive brown treesnakes
Aerial application of management tools can provide a cost‐effective means to conserve or control wildlife populations at the landscape scale. Large spatial scales, however, present difficulties when assessing in situ reliability and integrity of the devices themselves. We demonstrate application of a distance‐sampling density estimation approach to assess the performance of a newly...
Authors
Scott Michael Goetz, Amy A. Yackel Adams, Shane S Siers
Biological assessment of a proposed vegetation management program to benefit tribes in eastern Oklahoma Biological assessment of a proposed vegetation management program to benefit tribes in eastern Oklahoma
Tribal communities may benefit from land management activities that enhance their use of resources on tribal lands. The Bureau of Indian Affairs is implementing a 5-year vegetation management program to provide support for projects that develop and use natural and cultural resources and improve opportunities for agricultural activities to benefit 20 Indian Tribes and Nations in the...
Authors
Benjamin R. Harms, Heidi L. Bencin, Natasha B. Carr
Wildfire-driven forest conversion in western North American landscapes Wildfire-driven forest conversion in western North American landscapes
Changing disturbance regimes and climate can overcome forest ecosystem resilience. Following high-severity fire, forest recovery may be compromised by lack of tree seed sources, warmer and drier postfire climate, or short-interval reburning. A potential outcome of the loss of resilience is the conversion of the prefire forest to a different forest type or nonforest vegetation. Conversion...
Authors
Jonathan D. Coop, Sean A. Parks, Camile S Stevens-Rumann, Shelley D. Crausbay, Philip E. Higuera, Matthew D. Hurteau, Alan J. Tepley, Ellen Whitman, Timothy J Assal, Brandon M. Collins, Kimberley T Davis, Solomon Dobrowski, Donald A. Falk, Paula J. Fornwalt, Peter Z Fule, Brian J. Harvey, Van R. Kane, Caitlin E. Littlefield, Ellis Q. Margolis, Malcolm North, Marc-André Parisien, Susan Prichard, Kyle C. Rodman
Changes in capture rates and body size among vertebrate species occupying an insular urban habitat reserve Changes in capture rates and body size among vertebrate species occupying an insular urban habitat reserve
Long‐term ecological monitoring provides valuable and objective scientific information to inform management and decision‐making. In this article, we analyze 22 years of herpetofauna monitoring data from the Point Loma Ecological Conservation Area (PLECA), an insular urban reserve near San Diego, CA. Our analysis showed that counts of individuals for one of the four most common...
Authors
Thomas Stanley, Rulon W. Clark, Robert N. Fisher, Carlton J. Rochester, Stephanie A Root, Keith J Lombardo, Stacey D Ostermann-Kelm
Ambiguities in using telomere length for age determination in two North American bat species Ambiguities in using telomere length for age determination in two North American bat species
The age of an animal, determined by time (chronological age) as well as genetic and environmental factors (biological age), influences the likelihood of mortality and reproduction and thus the animal’s contribution to population growth. For many long-lived species, such as bats, a lack of external and morphological indicators has made determining age a challenge, leading researchers to...
Authors
Katherine M Ineson, Thomas J. O’Shea, Charles W Kilpatrick, Katy L. Parise, Jeffrey T. Foster
Highly competent native snake hosts extend the range of an introduced parasite beyond its invasive Burmese python host Highly competent native snake hosts extend the range of an introduced parasite beyond its invasive Burmese python host
Invasive Burmese pythons (Python bivittatus ) have introduced a nonnative pentastomid parasite (Raillietiella orientalis ) to southern Florida that has spilled over to infect native snakes. However, the extent of spillover, regarding prevalence and intensity, is unknown. We examined native snakes (n = 523) and invasive pythons (n = 1003) collected from Florida to determine the degree to...
Authors
Melissa A. Miller, John M. Kinsella, Ray W. Snow, Bryan G. Falk, Robert Reed, Scott M. Goetz, Frank J. Mazzotti, Craig Guyer, Christina M. Romagosa
Informing amphibian conservation efforts with abundance-based metapopulation models Informing amphibian conservation efforts with abundance-based metapopulation models
Science-based management strategies are needed to halt or reverse the global decline of amphibians. In many cases, sound management requires reliable models built using monitoring data. Historically, monitoring and statistical modeling efforts have focused on estimating occupancy using detection–nondetection data. Spatial occupancy models are useful for studying colonization–extinction...
Authors
Paige E Howell, Blake R. Hossack, Erin L. Muths, Brent H. Sigafus, Richard B. Chandler
Effects of snowpack, temperature, and disease on the demography of a wild population of amphibians Effects of snowpack, temperature, and disease on the demography of a wild population of amphibians
Understanding the demographic consequences of interactions among pathogens, hosts, and weather conditions is critical in determining how amphibian populations respond to disease and in identifying site-specific conservation actions that can be developed to bolster persistence of amphibian populations. We investigated population dynamics in Boreal Toads (Anaxyrus boreas) relative to...
Authors
Erin L. Muths, Blake R. Hossack, Evan H. Grant, David S. Pilliod, Brittany A. Mosher
Amphibian population declines: 30 Years of progress in confronting a complex problem Amphibian population declines: 30 Years of progress in confronting a complex problem
In 1989, it dawned on participants at the First World Congress of Herpetology that observed declines in amphibian populations might actually be global in scope and unprecedented in severity. Three decades of research since then has produced an enormous increase in our knowledge of amphibian ecology and appreciation of the complexity of possible causes for amphibian population declines...
Authors
David M. Green, Michael J Lannoo, David LesBarreres, Erin L. Muths
A synthesis of evidence of drivers of amphibian declines A synthesis of evidence of drivers of amphibian declines
Early calls for robust long-term time series of amphibian population data, stemming from discussion following the first World Congress of Herpetology, are now being realized after 25 yr of focused research. Inference from individual studies and locations have contributed to a basic consensus on drivers of amphibian declines. Until recently there were no large-scale syntheses of long-term...
Authors
Evan H. Grant, D. A. W. Miller, Erin L. Muths