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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

Expanding the Isotopic Toolbox: Applications of Hydrogen and Oxygen Stable Isotope Ratios to Food Web Studies

Hannah B. Vander Zanden, +4 more
- 01 Mar 2016 - 
TL;DR: The advantages and challenges associated with three applications of δ2H and δ18O values in food web studies are explored, and directions for targeted research are highlighted that will increase understanding of how these markers move through food webs and reflect ecological processes.
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Can seal eating explain elevated levels of PCBs and organochlorine pesticides in walrus blubber from eastern Hudson Bay (Canada)

Derek C. G. Muir, +5 more
- 01 Jan 1995 - 
TL;DR: The results suggest that the walrus with elevated organochlorines are feeding at a higher trophic level than those with low levels and are probably utilizing ringed seals for a portion of their diet.
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Integrated Analysis of Genetic, Stable Isotope, and Banding Data Reveal Migratory Connectivity and Flyways in the Northern Yellow Warbler (Dendroica petechia; aestiva Group)

Marylène Boulet, +2 more
- 01 Oct 2006 - 
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Seasonal changes in diets of seabirds in the North Water Polynya: a multiple-indicator approach

Nina J. Karnovsky, +3 more
- 07 Apr 2008 - 
TL;DR: This study highlights the seasonal nature of prey availability and seabird diets in the polynya, as well as the utility of simultaneously using conventional stomach content analysis and stable isotope and fatty acid analyses to infer dietary patterns in marine food webs.
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Organochlorine contaminants in seven species of Arctic seabirds from northern Baffin Bay

Andrea H. Buckman, +5 more
- 01 Feb 2004 - 
TL;DR: Positive relationships between delta15N (estimator of trophic level) and OC concentrations (lipid basis) were found for all OC groups, showing that troPHic position and biomagnification significantly influence OC concentrations in Arctic seabirds.