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♦ 1Degen R & Faulwetter S (2019)
The Arctic Traits Database – a repository of Arctic benthic invertebrate traits, Earth System Science Data 11: 301-322. https://doi.org/10.5194/essd-11-301-2019
♦ 2Feeding of Bearded Seals in the Bering and Chukchi Seas and Trophic Interaction with Pacific Walruses, LLOYD F. LOWRY, KATHRYN J. FROST, AND JOHN J. BURNS, ARCTIC VOL. 33, NO. 2 (JUNE 1980). P. 330-342
♦ 3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 4Acquarone, M. 2004:
Body composition, field metabolic rate and feeding ecology of walrus (Odobenus rosmarus) in northeast Greenland. PhD thesis. National Environmental Research Institute, Denmark. 142 pp.