Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16733
Dermal insecticide residues from birds inhabiting an orchard Dermal insecticide residues from birds inhabiting an orchard
The US Environmental Protection Agency conducts risk assessments of insecticide applications to wild birds using a model that is limited to the dietary route of exposure. However, free-flying birds are also exposed to insecticides via the inhalation and dermal routes. We measured azinphos-methyl residues on the skin plus feathers and the feet of brown-headed cowbirds (Molothrus ater) in...
Authors
N.B. Vyas, J. W. Spann, C.S. Hulse, S. Gentry, S.L. Borges
Minimising visitor impacts to protected areas: The efficacy of low impact education programmes Minimising visitor impacts to protected areas: The efficacy of low impact education programmes
Protected area managers, tourism providers, and other organisations commonly employ education programmes to address visitation-related impairment of natural and cultural resources, social conditions, and neighbouring communities. These programmes have different names (Leave No Trace, Codes of Conduct, Environmental Guidelines for Tourists) but share common objectives: to sustain...
Authors
J. L. Marion, S. E. Reid
Riparian influences on stream fish assemblage structure in urbanizing streams Riparian influences on stream fish assemblage structure in urbanizing streams
We assessed the influence of land cover at multiple spatial extents on fish assemblage integrity, and the degree to which riparian forests can mitigate the negative effects of catchment urbanization on stream fish assemblages. Riparian cover (urban, forest, and agriculture) was determined within 30 m buffers at longitudinal distances of 200 m, 1 km, and the entire network upstream of 59...
Authors
A.H. Roy, B. J. Freeman, Mary C. Freeman
A large-scale deforestation experiment: Effects of patch area and isolation on Amazon birds A large-scale deforestation experiment: Effects of patch area and isolation on Amazon birds
As compared with extensive contiguous areas, small isolated habitat patches lack many species. Some species disappear after isolation; others are rarely found in any small patch, regardless of isolation. We used a 13-year data set of bird captures from a large landscape-manipulation experiment in a Brazilian Amazon forest to model the extinction-colonization dynamics of 55 species and...
Authors
G. Ferraz, J.D. Nichols, J.E. Hines, P.C. Stouffer, R.O. Bierregaard, T.E. Lovejoy
Estimating species-specific suvival and movement when species identification is uncertain Estimating species-specific suvival and movement when species identification is uncertain
Incorporating uncertainty in the investigation of ecological studies has been the topic of an increasing body of research. In particular, mark-recapture methodology has shown that incorporating uncertainty in the probability of detecting individuals in populations enables accurate estimation of population-level processes such as survival, reproduction, and dispersal. Recent advances in...
Authors
J.P. Runge, J.E. Hines, J.D. Nichols
Sampling design trade-offs in occupancy studies with imperfect detection: Examples and software Sampling design trade-offs in occupancy studies with imperfect detection: Examples and software
Researchers have used occupancy, or probability of occupancy, as a response or state variable in a variety of studies (e.g., habitat modeling), and occupancy is increasingly favored by numerous state, federal, and international agencies engaged in monitoring programs. Recent advances in estimation methods have emphasized that reliable inferences can be made from these types of studies if
Authors
L.L. Bailey, J.E. Hines, J.D. Nichols, Darryl I. MacKenzie
Immunotoxicity of trenbolone acetate in Japanese quail Immunotoxicity of trenbolone acetate in Japanese quail
Trenbolone acetate is a synthetic androgen that is currently used as a growth promoter in many meat-exporting countries. Despite industry laboratories classifying trenbolone as nonteratogenic, data showed that embryonic exposure to this androgenic chemical altered development of the immune system in Japanese quail. Trenbolone is lipophilic, persistent, and released into the environment...
Authors
M.J. Quinn, M. McKernan, E.T. Lavoie, M. A. Ottinger
Long-term and storm-related shoreline change trends in the Florida Gulf Islands National Seashore Long-term and storm-related shoreline change trends in the Florida Gulf Islands National Seashore
Coastal erosion on Northern Gulf of Mexico barrier islands is an ongoing issue that was exacerbated by the storm seasons of 2004 and 2005 when several hurricanes made landfall in the Gulf of Mexico. Two units of the Gulf Islands National Seashore (GUIS), located on Santa Rosa Island, a barrier island off the Panhandle coast of Florida, were highly impacted during the hurricanes of 2004...
Authors
C.J. Hapke, M. Christiano
Restoration of waterbird habitats in Chesapeake Bay: Great expectations or Sisyphus revisited? Restoration of waterbird habitats in Chesapeake Bay: Great expectations or Sisyphus revisited?
In the past half century, many waterbird populations in Chesapeake Bay have declined or shifted ranges, indicating major ecological changes have occurred. While many studies have focused on the problems associated with environmental degradation such as the losses of coastal wetlands and submerged vegetation, a number of restoration efforts have been launched in the past few decades to...
Authors
R.M. Erwin, R.A. Beck
A frame-work for population-level ecological risk assessment A frame-work for population-level ecological risk assessment
No abstract available.
Authors
R. Wentsel, N. Beyer, V. Forbes, S. Maund, R. Pastorak
Environmental Impacts of mountain biking: Science review and best practices Environmental Impacts of mountain biking: Science review and best practices
No abstract available.
Authors
J. L. Marion, J. Wimpey