| Título: | Mortality of Parental Mountain Plovers (Charadrius montanus) during the Post-hatching Stage. |
| Autores: | Dreitz, Victoria J; Colorado Division of Wildlife; Victoria.Dreitz@state.co.us |
| Fecha: | 2010-06-25 |
| Publicador: | Avian Consevation & Ecology |
| Fuente: | |
| Tipo: |
Peer-Reviewed article |
| Tema: |
adult survival; Charadrius montanus; Colorado, USA; Mountain Plover; post-hatching care; precocial species |
| Descripción: | Monitoring, management, and conservation of grassland birds are topics of importance because of widespread population declines. Annual estimates of survival are available for many species, however knowledge of how survival varies on a seasonal basis remains poor. Information on the relative effects of breeding, overwintering, and migratory periods on population dynamics is necessary for effective management. Mortality risks often vary with the stage of the breeding cycle. In precocial species, mortality risks of adult birds are often higher during post-hatching care than prehatching. Using a multistate modeling approach, I investigated the influence of both environmental characteristics, measured by habitat, and individual characteristics, measured by sex and body mass, on post-hatching parental mortality of a declining grassland species, the Mountain Plover (Charadrius montanus). I found minimal evidence to support the effect of habitat, sex, or body mass on post-hatching parental mortality. Daily parental mortality was 0.0037 (SE = 0.0007, CI = 0.0026, 0.0053) and survival during the 30-day post-hatching period was 0.8943 (SE = 0.0187, CI = 0.8512, 0.9255). The findings from this study provide an understanding of the associations with todays grassland habitats and the dynamics of Mountain Plovers during the breeding season. Prior to assessing if alterations in habitats are acting more on post-hatching than the other stages of the annual cycle for the Mountain Plover, information on survival during other breeding stages and during migration is needed to assist in developing effective conservation and management plans. |
| Idioma: | Inglés |
1 Basic Science, Applied Science, and the Radical Middle Ground por Nudds, Thomas D; University of Guelph; tnudds@uoguelph.ca,Villard, Marc-André; Université de Moncton; villarm@UMoncton.CA | 6 Endangered Species, Provincialism, and a Continental Approach to Bird Conservation por Craig, Robert J; Bird Conservation Research, Inc.; mail@birdconservationresearch.org |
2 Mobile Incubation in Waved Albatross (Phoebastria irrorata): Associated Hatching Failure and Artificial Mitigation por Awkerman, Jill A; Wake Forest University; awkeja2@wfu.edu,Huyvaert, Kathryn P; Colorado State University; huyvaert@cnr.colostate.edu,Anderson, David J; Wake Forest University; da@wfu.edu | 7 Rediscovering the King of Woodpeckers: Exploring the Implications por Walters, Jeffrey R; Virginia Tech; jrwalt@vt.edu,Crist, Eileen L.; Virginia Tech; ecrist@vt.edu |
3 Stable Isotope Analysis Reveals That Agricultural Habitat Provides an Important Dietary Component for Nonbreeding Dunlin por Evans Ogden, Lesley Joan; University of British Columbia; lesleyje@interchange.ubc.ca,Hobson, Keith A; Canadian Wildlife Service; Keith.Hobson@EC.GC.CA,Lank, David B; Simon Fraser University; dlank@sfu.ca,Bittman, Shabtai; Agriculture and Agri-Food Canada; bittmans@agr.gc.ca | 8 Upland Nesting Prairie Shorebirds: Use of Managed Wetland Basins and Accuracy of Breeding Surveys por Gratto-Trevor, Cheri L.; Canadian Wildlife Service; cheri.gratto-trevor@ec.gc.ca |
4 Sea Surface Temperatures Mediated by the El Niño-Southern Oscillation Affect Birds Breeding in Temperate Coastal Rain Forests por Gaston, Anthony J; Canadian Wildlife Service; tony.gaston@ec.gc.ca,Martin, Jean-Louis; Centre National de Recherche Scientifique, Montpellier; ,Allombert, Sylvain; Centre National de Recherche Scientifique, Montpellier; | 9 Spatial Aggregation of Forest Songbird Territories and Possible Implications for Area Sensitivity por Bourque, Julie; ; julie.bourque@ec.gc.ca,Desrochers, André; Université Laval; andre.desrochers@sbf.ulaval.ca |
5 Scale and Sensitivity of Songbird Occurrence to Landscape Structure in a Harvested Boreal Forest por Taylor, Philip D; Acadia University; philip.taylor@acadiau.ca,Krawchuk, Meg A; University of Alberta; megk@ualberta.ca | 10 Identification of Summer Origins of Songbirds Migrating through Southern Canada in Autumn por Dunn, Erica H.; Environment Canada; Erica.Dunn@ec.gc.ca,Hobson, Keith A.; Environment Canada; Keith.Hobson@ec.gc.ca,Wassenaar, Len I.; Environment Canada; Len.Wassenaar@ec.gc.ca,Hussell, David J. T.; Ontario Ministry of Natural Resources; David.Hussell@mnr.gov.on.ca,Allen, Martha L.; Trent University; martha.allen@sympatico.ca |