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Full-Text Articles in Life Sciences

Traffic Noise And Sexual Selection: Studies Of Anthropogenic Impact On Bird Songs And Undergraduate Student Reasoning Of Evolutionary Mechanisms, Sarah Spier Aug 2019

Traffic Noise And Sexual Selection: Studies Of Anthropogenic Impact On Bird Songs And Undergraduate Student Reasoning Of Evolutionary Mechanisms, Sarah Spier

Dissertations & Theses in Natural Resources

Humans have transformed much of the natural landscape and are continuing to do so at an accelerated rate, compromising natural areas that serve as important habitat for many species. Roads impact much of the environment as they fragment habitat and introduce traffic noise into the acoustic environment, deferentially affecting wildlife in roadside habitat. I explored how traffic noise affects the detection of birds based on whether their vocalizations were masked by traffic noise. Masked species detection was not affected by an increase in traffic noise amplitude, while there was a negative effect of traffic noise amplitude on unmasked species detection ...


Coyote (Canis Latrans) Diet In An Urban Environment: Variation Relative To Pet Conflicts, Housing Density, And Season, S. A. Poessel, E. C. Mock, S. W. Breck Jan 2017

Coyote (Canis Latrans) Diet In An Urban Environment: Variation Relative To Pet Conflicts, Housing Density, And Season, S. A. Poessel, E. C. Mock, S. W. Breck

USDA National Wildlife Research Center - Staff Publications

Coyotes (Canis latrans Say, 1823) are highly successful in urbanized environments, but as they populate cities, conflict can occur and often manifests in the form of incidents with pets. To better understand whether coyotes view pets as prey or, alternatively, as competitors or a threat, we conducted a diet analysis of coyotes in the Denver metropolitan area (DMA) by analyzing scats. We also examined differences in diet between high- and low-density housing and among seasons. We found only small percentages of trash and domestic pets in the coyote diet. The presence of pets in the diet did not coincide with ...


Geochemistry In The Modern Soil Survey Program, M. A. Wilson, R. Burt, J. M. Scheyer, A. B. Jenkins, J. V. Chiaretti, M. G. Ulmer Feb 2008

Geochemistry In The Modern Soil Survey Program, M. A. Wilson, R. Burt, J. M. Scheyer, A. B. Jenkins, J. V. Chiaretti, M. G. Ulmer

Publications from USDA-ARS / UNL Faculty

Elemental analysis has played an important role in the characterization of soils since inception of the soil survey in the US. Recent efforts in analysis of trace and major elements (geochemistry) have provided necessary data to soil survey users in a variety of areas. The first part of this paper provides a brief overview of elemental sources, forms, mobility, and bioavailability; critical aspects important to users of soil survey geochemical data for appropriate use and interpretations. Examples are provided based on data gathered as part of the US soil survey program. The second part addresses the organization of sample collection ...