Now showing items 49-68 of 88

    • Making leaps in amphibian ecotoxicology: translating individual-level effects of contaminants to population viability 

      Willson, J. D.; Hopkins, W. A.; Bergeron, C. M.; Todd, B. D. (Ecological Society of America, 2012-09)
      Concern that environmental contaminants contribute to global amphibian population declines has prompted extensive experimental investigation, but individual-level experimental results have seldom been translated to ...
    • Modeling Fence Location and Density at a Regional Scale for Use in Wildlife Management 

      Poor, Erin E.; Jakes, Andrew; Loucks, Colby; Suitor, Mike (PLOS, 2014-01-08)
      Barbed and woven wire fences, common structures across western North America, act as impediments to wildlife movements. In particular, fencing influences pronghorn (Antilocapra americana) daily and seasonal movements, as ...
    • Modelling the Species Distribution of Flat-Headed Cats (Prionailurus planiceps), an Endangered South-East Asian Small Felid 

      Wilting, Andreas; Cord, Anna; Hearn, Andrew J.; Hesse, Deike; Mohamed, Azlan; Traeholdt, Carl; Cheyne, Susan M.; Sunarto, Sunarto; Jayasilan, Mohd-Azlan; Ross, Joanna; Shapiro, Aurelie C.; Sebastian, Anthony; Dech, Stefan; Breitenmoser, Christine; Sanderson, Jim; Duckworth, J. W.; Hofer, Heribert (PLOS, 2010-03-17)
      Background The flat-headed cat (Prionailurus planiceps) is one of the world's least known, highly threatened felids with a distribution restricted to tropical lowland rainforests in Peninsular Thailand/Malaysia, Borneo ...
    • Moderate echinostoma trivolvis infection has no effects on physiology and fitness-related traits of larval pickerel frogs (rana palustris) 

      Orlofske, S. A.; Belden, L. K.; Hopkins, W. A. (American Society of Parasitology, 2009-08)
      High intensity infections of Echinostoma trivolvis is metacercariae decrease survival and growth of young amphibian larvae. However, in nature, parasites are highly aggregated, which results in a large proportion of the ...
    • Nesting and Perching Habitat Use of the Madagascar Fish-Eagle 

      Berkelman, James; Fraser, James D.; Watson, Richard T. (Raptor Research Foundation, 2002)
      We documented Madagascar Fish-Eagle (Haliaeetus vociferoides) nest and perch use on lakes and rivers and compared parameters of used trees to unused reference trees. Nest and perch trees were broader and taller, had more ...
    • Observations at backyard bird feeders influence the emotions and actions of people that feed birds 

      Dayer, Ashley A.; Rosenblatt, Connor; Bonter, David N.; Faulkner, Holly; Hall, Richard J.; Hochachka, Wesley M.; Phillips, Tina B.; Hawley, Dana M. (British Ecological Society, 2019-03-25)
      1. Backyard bird feeding is one of the most common ways people engage with wildlife in many parts of the world. Given its scale, it can have profound consequences for the ecology of feeder birds and their behaviour. While ...
    • Ocelot Leopardus pardalis in Belize: the impact of trap spacing and distance moved on density estimates 

      Dillon, A.; Kelly, M. J. (Cambridge University Press, 2007-10)
      We used remote cameras to obtain information on an elusive species and to examine the effects of different camera trapping methodologies on abundance estimates. We determined activity pattern, trail use, trap success, and ...
    • Offshore distribution of alewife, alosa-pseudoharengus, and blueback herring, alosa-aestivalis, along the atlantic coast 

      Neves, R. J. (National Marine Fisheries Service Scientific Publication Office, 1981)
      This study of the offshore distribution of alewife, Alosa pseudoharengus, and blueback herring, A. aestivalis, in the Atlantic Ocean was based on catch data collected over the 16-year period 1963-78 during bottom trawl ...
    • Ospreys Use Bald Eagle Nests in Chesapeake Bay Area 

      Therres, Glenn D.; Chandler, Sheri K. (Raptor Research Foundation, 1993)
      Ospreys (Pandion haliaetus) and Bald Eagles (Haliaeetus leucocephalus) share similar breeding habitat in the Chesapeake Bay area and elsewhere. The nests of these species are similar in size and appearance. Ospreys typically ...
    • Overcoming barriers in evaluating outbreaks of diarrheal disease in resource poor settings: assessment of recurrent outbreaks in Chobe District, Botswana 

      Alexander, Kathleen A.; Blackburn, Jason K (2013-08-26)
      Background Diarrheal illness remains a leading cause of global morbidity and mortality, with the majority of deaths occurring in children <5 years of age. Lack of resources often prohibits the evaluation of outbreak ...
    • Partner PhDs: dual careers in grad school and beyond 

      Homyack, J. A.; Gorman, T. A. (Ecological Society of America, 2009-04)
    • Population Status of a Cryptic Top Predator: An Island-Wide Assessment of Tigers in Sumatran Rainforests 

      Wibisono, Hariyo T.; Linkie, Matthew; Guillera-Arroita, Gurutzeta; Smith, Joseph A.; Sunarto; Pusparini, Wulan; Asriadi; Baroto, Pandu; Brickle, Nick; Dinata, Yoan; Gemita, Elva; Gunaryadi, Donny; Haidir, Iding A.; Herwansyah; Karina, Indri; Kiswayadi, Dedy; Kristiantono, Decki; Kurniawan, Harry; Lahoz-Monfort, Jose J.; Leader-Williams, Nigel; Maddox, Tom; Martyr, Deborah J.; Maryati; Nugroho, Agung; Parakkasi, Karmila; Priatna, Dolly; Ramadiyanta, Eka; Ramono, Widodo S.; Reddy, Goddilla V.; Rood, Ente J. J.; Saputra, Doddy Y.; Sarimudi, Ahmad; Salampessy, Adnun; Septayuda, Eka; Suhartono, Tonny; Sumantri, Ade; Susilo; Tanjung, Iswandri; Tarmizi; Yulianto, Koko; Yunus, Mohammad; Zulfahmi (PLOS, 2011-11-02)
      Large carnivores living in tropical rainforests are under immense pressure from the rapid conversion of their habitat. In response, millions of dollars are spent on conserving these species. However, the cost-effectiveness ...
    • Potential causes of mortality for horseshoe crabs (Limulus polyphemus) during the biomedical bleeding process 

      Hurton, L.; Berkson, J. (National Marine Fisheries Service Scientific Publication Office, 2006-04)
      Biomedical companies catch and bleed horseshoe crabs for the production of Limulus amebocyte lysate (LAL), a product used for protecting public health (Berkson and Shuster, 1999). LAL is a clotting agent, derived solely ...
    • Prevalence of Ingested Fish Hooks in Freshwater Turtles from Five Rivers in the Southeastern United States 

      Steen, David A.; Hopkins, Brittney Cole; Van Dyke, James U.; Hopkins, William A. (PLoS, 2014-03-12)
      Freshwater turtles may ingest baited fish hooks because many are opportunistic scavengers. Although the ingestion of fish hooks is known to be a source of mortality in multiple vertebrate groups, the prevalence of hook ...
    • Preventing Raptor Electrocutions in an Urban Environment 

      Dwyer, James F.; Mannan, R. William (Raptor Research Foundation, 2007)
      Electrocution of raptors on poles supporting overhead electric lines is a cause of concern in the United States. Techniques for modifying (i.e., retrofitting) potentially lethal poles to reduce electrocutions have been ...
    • prey morphology constrains the feeding ecology of an aquatic generalist predator 

      Willson, J. D.; Hopkins, W. A. (Ecological Society of America, 2011-03)
      Resource availability and accessibility are primary factors guiding the distribution and abundance of organisms. For generalists, prey availability reflects both prey abundance and differences in quality among prey taxa. ...
    • Prosomal-width-to-weight relationships in American horseshoe crabs (Limulus polyphemus): examining conversion factors used to estimate landings 

      Graham, L. J.; Botton, M. L.; Hata, D.; Loveland, R. E.; Murphy, Brian R. (National Marine Fisheries Service Scientific Publication Office, 2009-04)
      Horseshoe crabs (Limulus polyphemus) are valued by many stakeholders, including the commercial fishing industry, biomedical companies, and environmental interest groups. We designed a study to test the accuracy of the ...
    • Quantifying climate sensitivity and climate-driven change in North American amphibian communities 

      Miller, David A. W.; Grant, Evan H. Campbell; Muths, Erin; Amburgey, Staci M.; Adams, Michael J.; Joseph, Maxwell B.; Waddle, J. Hardin; Johnson, Pieter T. J.; Ryan, Maureen E.; Schmidt, Benedikt R.; Calhoun, Daniel L.; Davis, Courtney L.; Fisher, Robert N.; Green, David M.; Hossack, Blake R.; Rittenhouse, Tracy A. G.; Walls, Susan C.; Bailey, Larissa L.; Cruickshank, Sam S.; Fellers, Gary M.; Gorman, Thomas A.; Haas, Carola A.; Hughson, Ward; Pilliod, David S.; Price, Steven J.; Ray, Andrew M.; Sadinski, Walt; Saenz, Daniel; Barichivich, William J.; Brand, Adrianne; Brehme, Cheryl S.; Dagit, Rosi; Delaney, Katy S.; Glorioso, Brad M.; Kats, Lee B.; Kleeman, Patrick M.; Pearl, Christopher A.; Rochester, Carlton J.; Riley, Seth P. D.; Roth, Mark; Sigafus, Brent H. (2018-09-25)
      Changing climate will impact species' ranges only when environmental variability directly impacts the demography of local populations. However, measurement of demographic responses to climate change has largely been limited ...
    • Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines 

      Grant, Evan H. Campbell; Miller, David A. W.; Schmidt, Benedikt R.; Adams, Michael J.; Amburgey, Staci M.; Chambert, Thierry; Cruickshank, Sam S.; Fisher, Robert N.; Green, David M.; Hossack, Blake R.; Johnson, Pieter T. J.; Joseph, Maxwell B.; Rittenhouse, Tracy A. G.; Ryan, Maureen E.; Waddle, J. Hardin; Walls, Susan C.; Bailey, Larissa L.; Fellers, Gary M.; Gorman, Thomas A.; Ray, Andrew M.; Pilliod, David S.; Price, Steven J.; Saenz, Daniel; Sadinski, Walt; Muths, Erin (Springer Nature, 2016-05-23)
      Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a "smoking gun" ...
    • Rapid Life-History Diversification of an Introduced Fish Species across a Localized Thermal Gradient 

      Zhu, Fengyue; Rypel, Andrew L.; Murphy, Brian R.; Li, Zhongjie; Zhang, Tanglin; Yuan, Jing; Guo, Zhiqiang; Tang, Jianfeng; Liu, Jiashou (PLOS, 2014-02-04)
      Climatic variations are known to engender life-history diversification of species and populations at large spatial scales. However, the extent to which microgeographic variations in climate (e.g., those occurring within a ...