Trophic relationships dynamics of Ringed seal (Pusa hispida Schreber, 1775) and Bearded seal (Erignathus barbatus Erxleben, 1777) from Chukotka over the last millennia (by stable isotopes method)

All Titles

  • Trophic relationships dynamics of Ringed seal (Pusa hispida Schreber, 1775) and Bearded seal (Erignathus barbatus Erxleben, 1777) from Chukotka over the last millennia (by stable isotopes method)

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Title

Trophic relationships dynamics of Ringed seal (Pusa hispida Schreber, 1775) and Bearded seal (Erignathus barbatus Erxleben, 1777) from Chukotka over the last millennia (by stable isotopes method)

Subject

S5-1, The biogeochemical study of animal remains:
integrating isotopic and trace elements analyses to zooarchaeology, poster

Description

Abstract:

We studied sea mammal remains from cultural layers of ancient Eskimo settlement on the eastern coast of the Bering Strait. Stable-nitrogen (15N) and stable-carbon (13C) isotope ratios were measured in collagen from 99 impuberal ringed seals and 33 impuberal bearded seals over 800-2370 BP (cal.). Stable-nitrogen isotope analysis revealed that ringed seals (mean 15N = 18,1‰) were enriched over bearded seals (14,9‰). Consequently, ringed seals occupied higher trophic level versus bearded seals. We find nonhomogeneity of ringed seal isotope ratio at that time. All ringed seal bones found on the settlement were divided into two groups: with accepted isotope ratio and with poor content of 13C. Comparison with literary data exhibits that the dynamics is connected with climatic changes in the North Pacific.

Authors:

GORLOVA Ekaterina

Affiliations

A.N. Severtsov Institute of Ecology and Evolution, Laboratory for Biocenology and Historical Ecology, 33 Leninskij prosp., Moscow, 119071, RUSSIA, kowkav@rambler.ru

Creator

Gorlova, Ekaterina

Date

August 2010

Contribution Form

Online Submission

No

Document Item Type Metadata

Citation

Gorlova, Ekaterina. "Trophic relationships dynamics of Ringed seal (Pusa hispida Schreber, 1775) and Bearded seal (Erignathus barbatus Erxleben, 1777) from Chukotka over the last millennia (by stable isotopes method) ," in BoneCommons, Item #1181, http://alexandriaarchive.org/bonecommons/items/show/1181 (accessed August 7, 2020).

License

Creative Commons License

File: Gorlova_Trophic_Seals_Chukotka_ICAZ2010_Poster.pdf