USAP-DC

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Adelie penguin weighbridge data 1994-2009 from the California Avian Data Center hosted by Point Reyes Bird Observatory Conservation Science Cite as Ballard, G. (2009) "Adelie penguin weighbridge data 1994-2009 from the California Avian Data Center hosted by Point Reyes Bird Observatory Conservation Science" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/. AMD - DIF Record(s) B031_wb_1.0 Abstract This project is an international collaborative investigation of geographic structuring, founding of new colonies, and population change of Adelie penguins (Pygoscelis adelia) nesting on Ross and Beaufort islands, Antarctica. This ongoing study will continue to consider the relative importance of resources that constrain or enhance colony growth (nesting habitat, access to food); the aspects of natural history that are affected by exploitative or interference competition among neighboring colonies (breeding success, foraging effort); climatic factors that influence the latter, especially sea ice patterns; and behavioral mechanisms that influence colony growth as a function of initial size and location (emigration, immigration). The research includes a census of known-age penguins, studies of foraging effort and overlap among colonies; and identification of the location of molting and wintering areas. Creator(s): Ballard, Grant Date Created: 2009-05-19 Repository: USAP-DC (current) - AMD-RESCUE (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: 166, East: 166, South: -77, North: -77 Award(s) NSF 0439759 Version: 1 Related Project(s) COLLABORATIVE: Adelie Penguin Response to Climate Change at the Individual, Colony and Metapopulation Levels References Ainley, D. G., G. Ballard, and K. M. Dugger, 2006. Competition among penguins and cetaceans reveals trophic cascades in the western Ross Sea, Antarctica. Ecology, v.87, 2006, p. 2080. Kooyman, G.L., D. G. Ainley, G. Ballard, & P. J. Ponganis, 2007. Effects of giant icebergs on two emperor penguin colonies in the Ross Sea, Antarctica. Antarctic Science, v.19, 2007, p. 31. (doi:10.1017/S0954102007000065) Dugger, K.M., G. Ballard, D.G. Ainley, and K.J. Barton, 2006. Flipper-band effects on the foraging behavior and survival of Adélie Penguins. Auk, v.123, 2006, p. 858. Shepherd, L.D., C.D. Millar, G. Ballard, D.G. Ainley, P.R. Wilson, G.D. Haynes, C. Baroni, and D.M. Lambert, 2005. Microevolution and mega-icebergs in the Antarctic. Proceedings of the National Academy of Sciences, v.102, 2005, p. 16717. (doi:10.1073/pnas.0502281102)