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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
Migration distance does not predict blood parasitism in a migratory songbird
Marjorie C. Sorensen,Marjorie C. Sorensen,Tanmay Dixit,Kevin J. Kardynal,Jason Newton,Keith A. Hobson,Staffan Bensch,Susanne Jenni-Eiermann,Claire N. Spottiswoode,Claire N. Spottiswoode +9 more
TL;DR: The results do not support any of the proposed mechanisms for migration effects on host–parasite dynamics and cautiously suggest that other factors may be more important for determining individual susceptibility to disease in migratory bird species.
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Breeding origin and spatial distribution of migrant and resident harriers in a Mediterranean wintering area: insights from isotopic analyses, ring recoveries and species distribution modelling
TL;DR: In this article, the authors used the winter distribution of Marsh Harrier (Circus aeruginosus) in the Iberian Peninsula (southwest Europe) to analyse the potential of spatial distribution models and stable isotope analyses of feathers (deuterium, δ2H).
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Isotopic (δ2H) Analysis of Stored Lipids in Migratory and Overwintering Monarch Butterflies (Danaus plexippus): Evidence for Southern Critical Late-Stage Nectaring Sites?
Keith A. Hobson,Keith A. Hobson,Oscar R. García-Rubio,Rogelio Carrera-Treviño,Libesha Anparasan,Kevin J. Kardynal,Jeremy N. McNeil,Eligio García-Serrano,Blanca Xiomara Mora Alvarez +8 more
TL;DR: This work establishes a new isotopic technique for tracking origins of stored lipids in monarchs and other migratory animals and emphasizes the importance of nectar availability in the southern portion of the range, and especially the nectar corridor through central Mexico.
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Consequences of forest fragmentation on territory quality of male Ovenbirds breeding in western boreal forests.
TL;DR: Results indicate that both vegetation structure and arthropod prey composition in Ovenbird territories differed between fragmented and contiguous forests, whereas total arthropd biomass did not.
Journal ArticleDOI
Long-term winter-site fidelity in Song Sparrows (Melospiza melodia)
Tosha R. Kelly,Keith A. Hobson,Garth W. Casbourn,Elizabeth A. MacDougall-Shackleton,Scott A. MacDougall-Shackleton +4 more
TL;DR: Values of δ2Hc were repeatable for males but not for females, suggesting that winter-site fidelity could differ between sexes, and the importance of tracking migratory populations across multiple years to uncover factors affecting population dynamics is emphasized.