Search Results - "Andersen, Erik M."

Responses of grassland arthropods to an invasion by nonnative grasses by Andersen, Erik M., Cambrelin, Marion N., Steidl, Robert J.

“…In grassland ecosystems, invasions by nonnative grasses typically decrease floristic diversity and structural heterogeneity in ways that alter the quantity and…”
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Identification of fipronil metabolites by time-of-flight mass spectrometry for application in a human exposure study by McMahen, Rebecca L., Strynar, Mark J., Dagnino, Sonia, Herr, David W., Moser, Virginia C., Garantziotis, Stavros, Andersen, Erik M., Freeborn, Danielle L., McMillan, Larry, Lindstrom, Andrew B.

“…Fipronil is a phenylpyrazole insecticide commonly used in residential and agricultural applications. To understand more about the potential risks for human…”
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Plant invasions alter settlement patterns of breeding grassland birds by Andersen, Erik M., Steidl, Robert J.

“…Animals have evolved strategies to identify areas that provide the resources and environmental conditions they need to survive and reproduce. To explore how…”
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Woody plant encroachment reduces density of most grassland specialists in a desert grassland but has limited influence on nest survival by Andersen, Erik M., Steidl, Robert J.

“…Woody plants are proliferating in grassland ecosystems worldwide, altering distributions and demography of many imperiled species. The transition from…”
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Power to detect trends in abundance within a distance sampling framework by Andersen, Erik M., Steidl, Robert J., Michalski, Fernanda

“…Ensuring that inferences from biological monitoring are reliable requires a level of sampling effort that is commensurate with programmatic objectives and…”
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The post-emergence period for denning Polar Bears: phenology and influence on cub survival by Andersen, Erik M., Wilson, Ryan R., Rode, Karyn D., Durner, George M., Atwood, Todd C., Gustine, David D.

“…Among polar bears (Ursus maritimus), only parturient females den for extended periods, emerging from maternal dens in spring after having substantially…”
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Using cytochrome b to identify nests and museum specimens of cryptic songbirds by Arnold, A. Elizabeth, Andersen, Erik M., Taylor, Michael J., Steidl, Robert J.

“…Understanding demography of vertebrate populations requires quantifying reproductive success. For taxa that are difficult to distinguish, estimates of…”
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Evaluating an Alternative Method for Rapid Urinary Creatinine Determination by Andersen, Erik M., Sobus, Jon R., Strynar, Mark J., Pleil, Joachim D., Nakayama, Shoji F.

“…Creatinine (CR) is an endogenously produced chemical that is routinely assayed in urine specimens to assess kidney function and sample dilution. The…”
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Woody plant encroachment restructures bird communities in semiarid grasslands by Andersen, Erik M., Steidl, Robert J.

“…[Display omitted] •Woody plant encroachment altered distributions of >80% of breeding bird species.•Distributions of grassland obligates contracted and…”
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Intraspecific Predation among Northwestern Crows by Andersen, Erik M

“…Cannibalism is uncommon in birds, and instances of adults killing and eating other adults are especially rare. Cases of intraspecific predation among…”
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Classifying the effects of human disturbance on denning polar bears by Woodruff, SP, Andersen, EM, Wilson, RR, Mangipane, LS, Miller, SB, Klein, KJ, Lemons, PR

“…Climate change is resulting in decreased sea ice extent and increased industrial activity in Arctic regions. In northern Alaska, USA, sea ice loss has…”
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Evaluating an Alternative Method for Rapid Urinary Creatinine Determination by Andersen, Erik M, Sobus, Jon R, Strynar, Mark J, Pleil, Joachim D, Nakayama, Shoji F

“…Creatinine (CR) is an endogenously produced chemical that is routinely assayed in urine specimens to assess kidney function and sample dilution. The…”
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Comparison of plant and animal communities at three spring-fed riparian areas in Guadalupe Mountains National Park, Texas by Andersen, Erik M

“…The objectives of the present study were to characterize the plant and animal communities at three riparian areas in Guadalupe Mountains National Park and make…”
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