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Gregory W. Thiemann

Gregory W. Thiemann

D-Index & Metrics

Ecology and Evolution

D-Index
32
Citations
3627
World Ranking
8119
National Ranking
504

Overview

Gregory W. Thiemann is affiliated with York University in Canada and has a research focus primarily within Earth and Planetary Sciences and Environmental Science. Their work extensively covers various aspects of Arctic and marine ecosystems, particularly studying the dynamics and ecology of marine animals in polar regions.

Their research topics include:

  • Marine animal studies overview
  • Arctic and Antarctic ice dynamics
  • Cryospheric studies and observations
  • Arctic and Russian Policy Studies
  • Wildlife Ecology and Conservation
  • Mercury impact and mitigation studies
  • Bat Biology and Ecology Studies

Frequent publication venues for their work feature:

  • Polar Biology
  • Oecologia
  • PLoS ONE
  • Environmental Science & Technology
  • Ecography

Gregory W. Thiemann has co-authored research with several collaborators, including:

  • Steven H. Ferguson
  • Brent G. Young
  • Katie R. N. Florko
  • David J. Yurkowski
  • Karyn D. Rode

Selected recent papers authored or co-authored by Thiemann include:

  • "Contrasting Temporal Patterns of Mercury, Niche Dynamics, and Body Fat Indices of Polar Bears and Ringed Seals in a Melting Icescape," 2020, Environmental Science & Technology
  • "Drivers and consequences of apex predator diet composition in the Canadian Beaufort Sea," 2020, Oecologia
  • "Identifying reliable indicators of fitness in polar bears," 2020, PLoS ONE
  • "Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge," 2020, Ecography
  • "Diet composition and body condition of polar bears (Ursus maritimus) in relation to sea ice habitat in the Canadian High Arctic," 2021, Polar Biology

Their research predominantly investigates ecological and environmental patterns related to species such as polar bears and ringed seals, with emphasis on physiological indicators, diet composition, and the impacts of changing sea ice habitats.

Best Publications

  • POLAR BEAR DIETS AND ARCTIC MARINE FOOD WEBS: INSIGHTS FROM FATTY ACID ANALYSIS

    Gregory W. Thiemann;Sara J. Iverson;Ian Stirling

  • Predicting survival, reproduction and abundance of polar bears under climate change.

    Péter K. Molnár;Andrew E. Derocher;Gregory W. Thiemann;Mark A. Lewis

  • Variation in the response of an Arctic top predator experiencing habitat loss: feeding and reproductive ecology of two polar bear populations

    Karyn D. Rode;Eric V. Regehr;David C. Douglas;George M. Durner

  • Migration phenology and seasonal fidelity of an Arctic marine predator in relation to sea ice dynamics

    Seth G. Cherry;Andrew E. Derocher;Gregory W. Thiemann;Nicholas J. Lunn

  • Recent observations of intraspecific predation and cannibalism among polar bears in the southern Beaufort Sea

    Steven C. Amstrup;Ian Stirling;Tom S. Smith;Craig Perham

  • Patterns and consequences of behavioural responses to predators and parasites in Rana tadpoles

    Gregory W. Thiemann;Richard J. Wassersug

  • Conservation status of polar bears (Ursus maritimus) in relation to projected sea-ice declines.

    Eric V. Regehr;Kristin L. Laidre;H. Resit Akçakaya;Steven C. Amstrup

  • Quantitative Support for a Subjective Fatness Index for Immobilized Polar Bears

    Ian Stirling;Gregory W. Thiemann;Evan Richardson

  • Individual patterns of prey selection and dietary specialization in an Arctic marine carnivore

    Gregory W. Thiemann;Sara J. Iverson;Ian Stirling;Martyn E. Obbard

  • Polar bears: proceedings of the 15th Working Meeting of the IUCN/SSC Polar Bear Specialist Group, Copenhagen, Denmark, 29 June3 July 2009

    Martyn E. Obbard;Gregory W. Thiemann;Elizabeth Peacock;Terry D. DeBruyn

  • Rapid ecosystem change and polar bear conservation

    Andrew E. Derocher;Jon Aars;Steven C. Amstrup;Amy Cutting

  • Unusual predation attempts of polar bears on ringed seals in the southern beaufort sea: Possible significance of changing spring ice conditions

    Ian Stirling;Evan Richardson;Gregory W. Thiemann;Andrew E. Derocher

  • Conservation and management of Canada’s polar bears (Ursus maritimus) in a changing Arctic11This review is part of the virtual symposium “Flagship Species – Flagship Problems” that deals with ecology, biodiversity and management issues, and climate impacts on species at risk and of Canadian importance, including the polar bear (Ursus maritimus), Atlantic cod (Gadus morhua), Piping Plover (Charadrius melodus), and caribou (Rangifer tarandus).

    E. Peacock;A. E. Derocher;G. W. Thiemann;I. Stirling;I. Stirling

  • High contributions of sea ice derived carbon in polar bear (Ursus maritimus) tissue.

    Thomas A Brown;Thomas A Brown;Melissa P Galicia;Gregory W Thiemann;Simon T Belt

  • Variation in blubber fatty acid composition among marine mammals in the Canadian Arctic

    Gregory W. Thiemann;Sara J. Iverson;Ian Stirling

  • Quantifying dietary pathways of proteins and lipids to tissues of a marine predator

    Seth G. Cherry;Andrew E. Derocher;Keith A. Hobson;Ian Stirling;Ian Stirling

  • Seasonal, sexual and anatomical variability in the adipose tissue of polar bears (Ursus maritimus)

    GW Thiemann;Sara J. Iverson;I. Stirling

  • VARIABILITY IN THE BLUBBER FATTY ACID COMPOSITION OF RINGED SEALS (PHOCA HISPIDA) ACROSS THE CANADIAN ARCTIC

    Gregory W. Thiemann;Sara J. Iverson;Ian Stirling

  • Using tri-axial accelerometers to identify wild polar bear behaviors

    Anthony M. Pagano;Karyn D. Rode;A. Cutting;M.A. Owen

  • Dietary habits of polar bears in Foxe Basin, Canada: possible evidence of a trophic regime shift mediated by a new top predator

    Melissa P. Galicia;Gregory W. Thiemann;Markus G. Dyck;Steven H. Ferguson

Frequent Co-Authors

Ian Stirling
Ian Stirling University of Alberta
Steven H. Ferguson
Steven H. Ferguson Fisheries and Oceans Canada
Andrew E. Derocher
Andrew E. Derocher University of Alberta
Sara J. Iverson
Sara J. Iverson Dalhousie University
Karyn D. Rode
Karyn D. Rode United States Geological Survey
Jon Aars
Jon Aars Norwegian Polar Institute
Todd C. Atwood
Todd C. Atwood United States Geological Survey
Øystein Wiig
Øystein Wiig University of Oslo
Anuschka Polder
Anuschka Polder Norwegian University of Life Sciences
Derek C. G. Muir
Derek C. G. Muir Environment and Climate Change Canada

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