S.D. Mattfeldt, E.H.C. Grant
2007, Herpetological Review (38) 43-45
Search Results
184617 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 2239, results 55951 - 55975
Publication Extents
Not all publications have extents, not all extents are completely accurateL.L. Bailey, J.E. Hines, J.D. Nichols, Darryl I. MacKenzie
2007, Ecological Applications (17) 281-290
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...
J. L. Marion, S. E. Reid
2007, Journal of Sustainable Tourism (15) 5-27
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 opportunities for...
E.H.C. Grant, W.H. Lowe, W.F. Fagan
2007, Ecology Letters (10) 165-175
Spatial structure regulates and modifies processes at several levels of ecological organization (e.g. individual/genetic, population and community) and is thus a key component of complex systems, where knowledge at a small scale can be insufficient for understanding system behaviour at a larger scale. Recent syntheses outline potential applications of...
L.A. Hierl, C.S. Loftin, J. R. Longcore, D.G. McAuley, D.L. Urban
2007, Wetlands (27) 141-152
We assessed changes in vegetative structure of 49 impoundments at Moosehorn National Wildlife Refuge (MNWR), Maine, USA, between the periods 1984-1985 to 2002 with a multivariate, adaptive approach that may be useful in a variety of wetland and other habitat management situations. We used Mahalanobis Distance (MD) analysis to...
R.D. MacCulloch, A. Lathrop, R.P. Reynolds, J.C. Senaris, G.E. Schneider
2007, Herpetological Review (38) 24-30
A.H. Roy, B. J. Freeman, Mary C. Freeman
2007, Landscape Ecology (22) 385-402
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...
Mary C. Freeman, C. M. Pringle, C.R. Jackson
2007, Journal of the American Water Resources Association (43) 5-14
Cumulatively, headwater streams contribute to maintaining hydrologic connectivity and ecosystem integrity at regional scales. Hydrologic connectivity is the water-mediated transport of matter, energy and organisms within or between elements of the hydrologic cycle. Headwater streams compose over two-thirds of total stream length in a typical river drainage and...
P.M. Lukacs, W.L. Thompson, W. L. Kendall, W.R. Gould, P.F. Doherty Jr., K.P. Burnham, David R. Anderson
2007, Journal of Applied Ecology (44) 456-460
1. Stephens et al. (2005) argue for 'pluralism' in statistical analysis, combining null hypothesis testing and information-theoretic (I-T) methods. We show that I-T methods are more informative even in single variable problems and we provide an ecological example. 2. I-T methods allow inferences to be made from multiple models simultaneously....
Christine M. Custer, T. W. Custer, J.E. Hines, J.D. Nichols, P.M. Dummer
2007, Environmental Toxicology and Chemistry (26) 1056-1065
Tree swallows (Tachycineta bicolor) were captured and banded at six sites that differed in polychlorinated biphenyl (PCB) contamination levels in the Housatonic River watershed, western Massachusetts, USA, from 2000 through 2004 to test the prediction that apparent survival rates of females in more contaminated areas were lower than those from...
G. Michael Haramis, Gregory D. Kearns
2007, Journal of Wildlife Management (71) 788-794
Well known for a fall spectacle of maturing wild rice (Zizania aquatica) and migrant waterbirds, the tidal freshwater marshes of the Patuxent River, Maryland, USA, experienced a major decline in wild rice during the 1990s. We conducted experiments in 1999 and 2000 with fenced exclosures and discovered herbivory by resident...
W. N. Beyer, G. Gaston, R. Brazzle, A.F. O'Connell Jr., D. J. Audet
2007, Environmental Toxicology and Chemistry (26) 1040-1046
Habitat surrounding the inactive Continental Mine in northern Idaho, USA, supports bear (Ursus arctos, Ursus americanus), moose (Alces alces), elk (Cervus elaphus), woodland caribou (Rangifer tarandus caribou), and abundant mule (Odocoileus hemionus) and white-tailed deer (Odocoileus virginianus). Tailings on the mining site were capped and remediated in 2003 to reduce...
J.P. Runge, J.E. Hines, J.D. Nichols
2007, Ecology (88) 282-288
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...
D.R. Church, L.L. Bailey, H.M. Wilbur, W. L. Kendall, J.E. Hines
2007, Ecology (88) 891-903
Simultaneous estimation of survival, reproduction, and movement is essential to understanding how species maximize lifetime reproduction in environments that vary across space and time. We conducted a four-year, capture–recapture study of three populations of eastern tiger salamanders (Ambystoma tigrinum tigrinum) and used multistate mark–recapture statistical methods to estimate the manner...
J. Martin, W.M. Kitchens, J.E. Hines
2007, Conservation Biology (21) 472-481
Monitoring natural populations is often a necessary step to establish the conservation status of species and to help improve management decisions. Nevertheless, many monitoring programs do not effectively address primary sources of variability in monitoring data, which ultimately may limit the utility of monitoring in identifying declines and improving management....
R.A. Voldseth, W.C. Johnson, T. Gilmanov, G.R. Guntenspergen, B.V. Millett
2007, Ecological Applications (17) 527-540
Wetlands of the Prairie Pothole Region exist in a matrix of grassland dominated by intensive pastoral and cultivation agriculture. Recent conservation management has emphasized the conversion of cultivated farmland and degraded pastures to intact grassland to improve upland nesting habitat. The consequences of changes in land-use cover that...
G.M. Haramis, W.A. Link, P.C. Osenton, Daniel B. Carter, R.G. Weber, N.A. Clark, M.A. Teece, D.S. Mizrahi
2007, Journal of Avian Biology (38) 367-376
We used stable isotope (SI) methods in combination with pen feeding trials to determine the importance of eggs of the Atlantic horseshoe crab Limulus polyphemus to migratory fattening of red knots Calidris canutus rufa and ruddy turnstones Arenaria interpres morinella during spring stopover in Delaware Bay. By manifesting measurable fractionation (ca +3‰) and rapid turnover, blood...
M.B. Voltura, J.B. French
2007, Archives of Environmental Contamination and Toxicology (52) 264-269
Studies of the impact of environmental contaminants on reproduction have typically focused on effects on fertility and subsequent reproductive failure. Contaminants may also impact reproductive output or other aspects of life history through effects on resource acquisition or allocation. We fed successfully breeding female white-footed mice (Peromyscus leucopus)...
T. W. Custer, P.M. Dummer, Christine M. Custer, A.U. Li, D. Warburton, M. J. Melancon, D. J. Hoffman, C. W. Matson, J. W. Bickham
2007, Environmental Monitoring and Assessment (133) 335-345
The U.S. Army Corps of Engineers conducted a water drawdown on Navigation Pool 8 of the Upper Mississippi River during the summers of 2001 and 2002 to increase aquatic vegetation production and thereby improve fish and wildlife habitat. Flooding of previously dried wetlands, however, may increase the rate of...
N.B. Vyas, J. W. Spann, C.S. Hulse, S. Gentry, S.L. Borges
2007, Environmental Monitoring and Assessment (133) 209-214
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...
D.F. Cisneros-Heredia, R.P. Reynolds
2007, Herpetozoa (19) 184-186
W.E. Thogmartin, J.R. Sauer, M. G. Knutson
2007, Journal of Wildlife Management (71) 376-382
We used an over-dispersed Poisson regression with fixed and random effects, fitted by Markov chain Monte Carlo methods, to model population spatial patterns of relative abundance of American woodcock (Scolopax minor) across its breeding range in the United States. We predicted North American woodcock Singing Ground Survey counts with a...
M.S. Fonseca, M.A.R. Koehl, B.S. Kopp
2007, Journal of Experimental Marine Biology and Ecology (340) 227-246
Field observations have revealed that when water flow is consistently from one direction, seagrass shoots align in rows perpendicular to the primary axis of flow direction. In this study, live Zostera marina shoots were arranged either randomly or in rows perpendicular to the flow direction and tested in a seawater...
W.A. Link, J.R. Sauer
2007, Ecology (88) 49-55
We present a combined analysis of data from two large-scale surveys of bird populations. The North American Breeding Bird Survey is conducted each summer; the Christmas Bird Count is conducted in early winter. The temporal staggering of these surveys allows investigation of seasonal components of population change, which we illustrate...
J. R. Longcore, J.E. Longcore, Allan P. Pessier, W.A. Halteman
2007, Journal of Wildlife Management (71) 435-444
An emerging disease of amphibians caused by the chytrid fungus Batrachochytrium dendrobatidis has been associated with morbidity, mortality, and extinction of species. Typically, researchers have detected B. dendrobatidis only when examining amphibians for causes of mortalities; few data exist on infection rates where mortalities are lacking. During May-September 2000-2002 we...