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Keith A. Hobson
Researcher at University of Western Ontario
Publications - 686
Citations - 44822
Keith A. Hobson is an academic researcher from University of Western Ontario. The author has contributed to research in topics: Population & Trophic level. The author has an hindex of 103, co-authored 653 publications receiving 41300 citations. Previous affiliations of Keith A. Hobson include National Autonomous University of Mexico & Fisheries and Oceans Canada.
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Journal ArticleDOI
Bioacoustic monitoring of forest songbirds: interpreter variability and effects of configuration and digital processing methods in the laboratory
TL;DR: Despite noisy conditions due to wind and other ambient sounds for many of the recordings, interpreters showed a high level of similarity in species identification and enumeration for the 34 most abundant species, suggesting that birders are more variable in their identification of rare or uncommon species.
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Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity
Keith A. Hobson,Steven L. Van Wilgenburg,John Faaborg,Judith D. Toms,Carlos Rengifo,Alejandro Llanes Sosa,Yves Aubry,Rafael Brito Aguilar +7 more
TL;DR: In this paper, a large-scale coordinated sampling effort on the wintering grounds to establish an isotopic atlas of migratory connectivity for North American Neotropical migrants was proposed.
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Low variation in blood δ13C among Hudson Bay polar bears : Implications for metabolism and tracing terrestrial foraging
Keith A. Hobson,Ian Stirling +1 more
TL;DR: It is suggested that a more effective approach to using stable-carbon isotope analysis to delineate the importance or use of terrestrial foods to polar bears on land in Hudson Bay during the ice-free period might be through the isotopic analysis of exhaled carbon dioxide rather than blood components.
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Persistent organic pollutants (POPs) in a small, herbivorous, arctic marine zooplankton (Calanus hyperboreus): trends from April to July and the influence of lipids and trophic transfer.
Aaron T. Fisk,Gary A. Stern,Keith A. Hobson,William M. J. Strachan,Mark D. Loewen,Ross J. Norstrom,Ross J. Norstrom +6 more
TL;DR: Results suggest that hydrophobic POP concentrations in zooplankton are likely to reflect water concentrations and that POPs do not biomagnify in C. hyperboreus or likely in other small, herbivorous zoopLankton.
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Stable isotopic determinations of trophic relationships of great auks.
TL;DR: It is suggested that great auk chicks and juveniles occupied lower trophic levels and probably consumed euphausiids, and great auks fed offspring via regurgitation, as do dovekies, the only extant fully planktivorous alcid in the Atlantic, and unrelated penguins of the southern hemisphere.