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Range-wide patterns of migratory connectivity in the western sandpiper Calidris mauri

Franks, Samantha E. ; Norris, D. Ryan ; Kyser, T. Kurt ; Fernández, Guillermo ; Schwarz, Birgit ; Carmona, Roberto ; Colwell, Mark A. ; Sandoval, Jorge Correa ; Dondua, Alexey ; Gates, H. River ; Haase, Ben ; Hodkinson, David J. ; Jiménez, Ariam ; Lanctot, Richard B. ; Ortego, Brent ; Sandercock, Brett K. ; Sanders, Felicia ; Takekawa, John Y. ; Warnock, Nils ; Ydenberg, Ron C. ; Lank, David B.

Journal of avian biology, 2012-03, Vol.43 (2), p.155-167 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

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  • Título:
    Range-wide patterns of migratory connectivity in the western sandpiper Calidris mauri
  • Autor: Franks, Samantha E. ; Norris, D. Ryan ; Kyser, T. Kurt ; Fernández, Guillermo ; Schwarz, Birgit ; Carmona, Roberto ; Colwell, Mark A. ; Sandoval, Jorge Correa ; Dondua, Alexey ; Gates, H. River ; Haase, Ben ; Hodkinson, David J. ; Jiménez, Ariam ; Lanctot, Richard B. ; Ortego, Brent ; Sandercock, Brett K. ; Sanders, Felicia ; Takekawa, John Y. ; Warnock, Nils ; Ydenberg, Ron C. ; Lank, David B.
  • Assuntos: Animal migration behavior ; Breeding ; Breeding sites ; Calidris mauri ; Datasets ; Feathers ; Geography ; Isotopes ; Population dynamics ; Sandpipers ; Seasonal migration
  • É parte de: Journal of avian biology, 2012-03, Vol.43 (2), p.155-167
  • Notas: ark:/67375/WNG-293LRM9S-K
    ArticleID:JAV5573
    istex:F4B16E11F55585DF657DFB808555D15569EF0B12
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
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    content type line 23
  • Descrição: Understanding the population dynamics of migratory animals and predicting the consequences of environmental change requires knowing how populations are spatially connected between different periods of the annual cycle. We used stable isotopes to examine patterns of migratory connectivity across the range of the western sandpiper Calidris mauri. First, we developed a winter isotope basemap from stable-hydrogen (δD), -carbon (δ¹³C), and -nitrogen (δ¹⁵N) isotopes of feathers grown in wintering areas. δD and δ¹⁵ values from wintering individuals varied with the latitude and longitude of capture location, while δ¹³C varied with longitude only. We then tested the ability of the basemap to assign known-origin individuals. Sixty percent of wintering individuals were correctly assigned to their region of origin out of seven possible regions. Finally, we estimated the winter origins of breeding and migrant individuals and compared the resulting empirical distribution against the distribution that would be expected based on patterns of winter relative abundance. For breeding birds, the distribution of winter origins differed from expected only among males in the Yukon-Kuskokwim (Y-K) Delta and Nome, Alaska. Males in the Y-K Delta originated overwhelmingly from western Mexico, while in Nome, there were fewer males from western North America and more from the Baja Peninsula than expected. An unexpectedly high proportion of migrants captured at a stopover site in the interior United States originated from eastern and southern wintering areas, while none originated from western North America. In general, we document substantial mixing between the breeding and wintering populations of both sexes, which will buffer the global population of western sandpipers from the effects of local habitat loss on both breeding and wintering grounds.
  • Editor: Oxford, UK: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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