Large grazing mammals of the ?Mammoth? fauna as indicators of the Late Pleistocene paleoenvironment
Recent multidisciplinary studies of the permafrost deposits in Northern Yakutia have greatly improved ourknowledge about the Late Pleistocene environmental history of the region. One of the interesting facts aboutthe past life on the Laptev Sea shelf region is the abundance of fossil mammal bones, f...
| Main Authors: | , |
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| Format: | Conference Object |
| Language: | unknown |
| Published: |
2005
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| Online Access: | https://epic.awi.de/id/eprint/12889/ https://hdl.handle.net/10013/epic.23294 |
| Summary: | Recent multidisciplinary studies of the permafrost deposits in Northern Yakutia have greatly improved ourknowledge about the Late Pleistocene environmental history of the region. One of the interesting facts aboutthe past life on the Laptev Sea shelf region is the abundance of fossil mammal bones, found over the coastallowlands and on the shelf land. More than 4000 fossil mammal bones have been collected in the Lena DeltaRegion, on the New Siberian Islands, Oyogos Lowland, Muostakh Island, and in the Anabar-Olenek Region.Our investigations were focused on the study of the ?Mammoth fauna?. All bone findings were collected andregistered. Such an approach combined with radiocarbon dating of bone collagen makes it possible to revealsome important aspects of large animal distribution on the studied area during the Late Quaternary. In totalthe taxonomic composition of the collections from the Laptev Sea Region is close to the Late Pleistocene"Mammoth" fauna from other Arctic Siberia Regions but the relations of large grazing mammal specieswere collected on various localities are different (Table 2.1).Table 2.1: Composition of the big grazing mammals of the ?Mammoth? fauna from the Laptev Sea RegionSpecies LyakhovskyIslandOyogos Yar BykovskyPeninsulaOlenekskyChannelMamontovKlykMammuthus primigenius 26% 40% 37% 42% 9%Equus caballus 25% 16% 18% 15% 30%Rangifer tarandus 18% 12% 15% 16% 39%Bison priscus 20% 22% 13% 5% 5%Ovibos moschatus 7% 3% 1% 1%Possibly, the diversity of mammal associations can be explained by local taphonomic and other randomfactors. But it can also describe the differences in paleoenvironmental conditions of the studied regions.Predominance of horse bones in some collection e.g. marks the regions with environmental conditions thatare more favourable for the horse: hard soil, think snow caver and etc. (for example, Mamontov Klyk).Other sites (e.g. Oyogos Yar, Bykovsky Peninsula, Oleneksky Channel were more favourable for the woollymammoth. The number of bison and muskox bones shows also differences in ... |
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