Fort Collins Science Center

Publications

FORT scientists have produced more than 1,500 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: 1,836
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Year Published: 2020

Forage and habitat for pollinators in the northern Great Plains—Implications for U.S. Department of Agriculture conservation programs

Managed and wild pollinators are critical components of agricultural and natural systems. Despite the well-known value of insect pollinators to U.S. agriculture, Apis mellifera (Linnaeus, 1758; honey bees) and wild bees currently face numerous stressors that have resulted in declining health. These declines have engendered support for pollinator...

Otto, Clint R. V.; Smart, Autumn H.; Cornman, Robert S.; Simanonok, Michael; Iwanowicz, Deborah D.
Otto, C.R.V., Smart, A., Cornman, R.S., Simanonok, M., and Iwanowicz, D.D., 2020, Forage and habitat for pollinators in the northern Great Plains—Implications for U.S. Department of Agriculture conservation programs: U.S. Geological Survey Open-File Report 2020–1037, 64 p., https://doi.org/10.3133/ofr20201037.

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Year Published: 2020

Nutrients and warming interact to force mountain lakes into unprecedented ecological state

While deposition of reactive nitrogen (N) in the 20th century has been strongly linked to changes in diatom assemblages in high-elevation lakes, pronounced and contemporaneous changes in other algal groups suggest additional drivers. We explored the origin and magnitude of changes in two mountain lakes from the end of the Little Ice Age at ca....

Oleksy, Isabella A.; Baron, Jill; Leavitt, Peter; Spaulding, Sarah

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Year Published: 2020

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...

Gerson, Jacqueline R.; Walters, David; Eagles-Smith, Collin; Bernhardt, Emily S.; Brandt, Jessica E

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Year Published: 2020

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...

Oleksy, Isabella A.; Beck, Whitney; Lammers, R.; Steger, Cara; Wilson, Cody; Christensen, Kyle; Vincent, Kim; Johnson, Pieter; Baron, Jill

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Year Published: 2020

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...

Goetz, Scott Michael; Yackel Adams, Amy A.; Siers, Shane S

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Year Published: 2020

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...

Harms, Benjamin R.; Bencin, Heidi L.; Carr, Natasha B.
Harms, B.R., Bencin, H.L., and Carr, N.B., 2020, Biological assessment of a proposed vegetation management program to benefit Tribes in eastern Oklahoma: U.S. Geological Survey Open-File Report 2020–1013, 49 p., https://doi.org/10.3133/ofr20201013.

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Year Published: 2020

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...

Coop, Jonathan D.; Parks, Sean A.; Stevens-Rumann, Camile S; Crausbay, Shelley D.; Higuera, Philip E.; Hurteau, Matthew D; Tepley, Alan J.; Whitman, Ellen; Assal, Timothy J; Collins, Brandon M.; Davis, Kimberley T; Dobrowski, Solomon; Falk, Donald A.; Fornwalt, Paula J.; Fulé, Peter Z; Harvey, Brian J.; Kane, Van R.; Littlefield, Caitlin E; Margolis, Ellis; North, Malcolm; Parisien, Marc-André; Prichard, Susan; Rodman, Kyle C

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Year Published: 2020

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...

Stanley, Thomas; Clark, Rulon W.; Fisher, Robert N.; Rochester, Carlton J.; Root, Stephanie A; Lombardo, Keith J; Ostermann-Kelm, Stacey D

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Year Published: 2020

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...

Miller, Melissa A.; Kinsella, John M.; Snow, Ray W.; Falk, Bryan G.; Reed, Robert; Goetz, Scott M.; Mazzotti, Frank J.; Guyer, Craig; Romagosa, Christina M.

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Year Published: 2020

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...

Paige E Howell; Hossack, Blake R.; Muths, Erin L.; Sigafus, Brent H.; Chandler, Richard B.

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Year Published: 2020

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...

Muths, Erin L.; Hossack, Blake R.; Grant, Evan H.; Pilliod, David; Mosher, Brittany A.

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Year Published: 2020

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...

Green, David M.; Lannoo, Michael J; LesBarreres, David; Muths, Erin L.