Freshwater ostracodes in Quaternary permafrost deposits from the Siberian Arctic


Contact
swetterich [ at ] awi-potsdam.de

Abstract

Ostracode analysis was carried out on samples from ice-rich permafrost deposits obtained on the BykovskyPeninsula (Laptev Sea).A composite pro file was investigated that covers most of a 38-m thick permafrostsequence and corresponds to the last ca.60 kyr of the Late Quaternary.The ostracode assemblages aresimilar to those known from European Quaternary lake deposits during cold stages.The ostracode habitatswere small,shallow,cold,oligotrophic pools located in low centred ice wedge polygons or in small ther-mokarst depressions.In total,15 taxa,representing 7 genera,were identi fied from 65 samples.The studiedsection is subdivided into six ostracode zones that correspond to Late Quaternary climatic and environ-mental stadial-interstadial variations established by other paleoenvironmental proxies:(1)cold and dryZyrianian stadial (58 53 kyr BP);(2)warm and dry Karginian interstadial (48 34 kyr BP);(3)transitionfrom the Karginian interstadial to the cold and dry Sartanian stadial (34 21 kyr BP);(4)transition fromthe Sartanian stadial to the warm and dry Late Pleistocene period,the Allerød (21 14 kyr BP);(5)transition from the Allerød to the warm and wet Middle Holocene (14 7 kyr BP);and (6)cool and wetLate Holocene (ca.3 kyr BP).The abundance and diversity of the ostracodes will be used as an additionalbioindicator for paleoenvironmental reconstructions of the Siberian Arctic.



Item Type
Article
Authors
Divisions
Programs
Publication Status
Published
Eprint ID
10896
DOI 10.1007/s10933-005-5801-y

Cite as
Wetterich, S. , Schirrmeister, L. and Pietrzeniuk, E. (2005): Freshwater ostracodes in Quaternary permafrost deposits from the Siberian Arctic , Journal of Paleolimnology, 34 , pp. 363-376 . doi: 10.1007/s10933-005-5801-y


Download
[thumbnail of Fulltext]
Preview
PDF (Fulltext)
Wet2004a.pdf

Download (699kB) | Preview
Cite this document as:

Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Citation

Research Platforms
N/A

Campaigns
N/A


Actions
Edit Item Edit Item