K
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.
Papers
More filters
Journal ArticleDOI
Flyway population delineation in Taiga Bean Geese Anser fabalis fabalis revealed by multi-element feather stable isotope analysis
Anthony D. Fox,Keith A. Hobson,Keith A. Hobson,Adriaan de Jong,Kevin J. Kardynal,Geoff Koehler,Thomas Heinicke +6 more
TL;DR: In this paper, stable isotope analyses of feathers of four elements (δ2H, δ13C, Δ15N and δ34S) of Taiga bean geese were used to confirm the largely discrete nature of these three flyways and contribute significantly to deliver effective targeted and appropriate research, monitoring and management actions throughout the ranges of these flyways.
Journal ArticleDOI
A stable isotope ( δ 2 H) approach to deriving origins of harvested woodcock ( Scolopax rusticola ) taken in France
TL;DR: In this article, the authors explored the use of an intrinsic marker, the stable hydrogen isotope composition of feathers of Scolopax rusticola, as a means of assigning birds to natal origin using a woodcock-specific δ 2Hf isoscape.
Journal ArticleDOI
Compatibility of preparatory procedures for the analysis of cortisol concentrations and stable isotope (δ13C, δ15N) ratios: a test on brown bear hair.
Agnieszka Sergiel,Keith A. Hobson,David M. Janz,Marc R. L. Cattet,Nuria Selva,Luciene Kapronczai,Chantel Gryba,Andreas Zedrosser +7 more
TL;DR: Stress hormone levels and stable isotope ratios in hair or feathers represent an integrated picture of hormone physiology and foraging ecology of an animal and are evaluated to optimize the efficiency of future research.
Journal ArticleDOI
Migration pattern of Gambel’s White-crowned Sparrow along the Pacific Flyway
Simeon Lisovski,Simeon Lisovski,Zoltán Németh,Zoltán Németh,John C. Wingfield,Jesse S. Krause,Jesse S. Krause,Keith A. Hobson,Nathaniel E. Seavy,Jennifer M. Gee,Marilyn Ramenofsky +10 more
TL;DR: Findings confirm the phenotypic flexibility observed within this species and highlight the potential of White-crowned Sparrows for further investigations of evolutionary adaptations to ongoing changes in the environment.
Journal ArticleDOI
Allocation of Nutrients to Reproduction at High Latitudes: Insights from Two Species of Sympatrically Nesting Geese
TL;DR: It is concluded that, although body size is likely an important ultimate factor in determining overall breeding strategies in birds, proximate factors that influence access to nutrients during egg production appear to be more important in shaping nutrient allocation to egg synthesis.