New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia
The DFG funded project (RI 809/17-1) aims to reconstruct environmental changes in the Eurasian Arctic during the Late Quaternary interstadial and interglacial periods basing on microfossils records from permafrost sequences of NE-Siberia. We present the testate amoebae records from the Cape Mamontov...
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ftawi:oai:epic.awi.de:17354 2024-09-15T18:17:34+00:00 New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia Müller, Stephan Bobrov, A. Schirrmeister, Lutz Andreev, Andrei Tarasov, P. Riedel, F. 2007 https://epic.awi.de/id/eprint/17354/ https://doi.org/10.1016/j.quaint.2007.04.001 https://hdl.handle.net/10013/epic.27706 unknown Müller, S. , Bobrov, A. , Schirrmeister, L. orcid:0000-0001-9455-0596 , Andreev, A. orcid:0000-0002-8745-9636 , Tarasov, P. and Riedel, F. (2007) New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia , Abstracts of XVII INQUA Congress 2007, Cairns, Australiath July to 3rd August 2007 Quaternary International, 167-168 . doi:10.1016/j.quaint.2007.04.001. <https://doi.org/10.1016/j.quaint.2007.04.001.> , hdl:10013/epic.27706 EPIC3Abstracts of XVII INQUA Congress 2007, Cairns, Australiath July to 3rd August 2007 Quaternary International, 167-168, 28, 294 p. Conference notRev 2007 ftawi https://doi.org/10.1016/j.quaint.2007.04.001 2024-06-24T04:00:13Z The DFG funded project (RI 809/17-1) aims to reconstruct environmental changes in the Eurasian Arctic during the Late Quaternary interstadial and interglacial periods basing on microfossils records from permafrost sequences of NE-Siberia. We present the testate amoebae records from the Cape Mamontovy Klyk (Laptev Sea coast) covering the last 50 14C ka.Testate amoebae (Protozoa: Rhizopoda, Testacea) are one cell microorganisms with a distinct organic shell (testa). They are common in wet environments such as wetlands but they are also frequent in soils, especially in high organic content soils. Their well-defined ecological preferences for habitats and good preservation of fossil shells provide a basis for the rhizopod analysis as a method for reconstruction of environmental changes and climate in the past. The analysis show that differences of Pleistocene and the Holocene climatic conditions are well reflected in the testate amoebae records. The main characteristic of Mamontovy Klyk fossil rhizopod complexes is the dominance of eurybiotic soil genera (e.g. Centropyxis, Cyclopyxis, Plagiopyxis and Phryganella). Fluctuations in species abundances and diversity well reflect alternating of warm-wet and cold-dry periods during the Late Pleistocene, in particular the Karginsky interstadial ca 50-30 14C ka BP and Sartan stadial 30-10 ka 14C BP. It is obvious that climate changes were more drastic during the Pleistocene. These changes were at least partly responsible for the disappearance of some rare rhizopod species (e.g. Argynnia sp., Paraquadrulla irregularis). Considering the species diversity as a result of ecological and climatic conditions, we assume that habitat and climatic conditions during the periods with higher species diversity (e.g. Karginsky interstadial), were more favourable than during the Sartan stadial. Conference Object laptev Laptev Sea permafrost Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Quaternary International 167-168 3 486 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
The DFG funded project (RI 809/17-1) aims to reconstruct environmental changes in the Eurasian Arctic during the Late Quaternary interstadial and interglacial periods basing on microfossils records from permafrost sequences of NE-Siberia. We present the testate amoebae records from the Cape Mamontovy Klyk (Laptev Sea coast) covering the last 50 14C ka.Testate amoebae (Protozoa: Rhizopoda, Testacea) are one cell microorganisms with a distinct organic shell (testa). They are common in wet environments such as wetlands but they are also frequent in soils, especially in high organic content soils. Their well-defined ecological preferences for habitats and good preservation of fossil shells provide a basis for the rhizopod analysis as a method for reconstruction of environmental changes and climate in the past. The analysis show that differences of Pleistocene and the Holocene climatic conditions are well reflected in the testate amoebae records. The main characteristic of Mamontovy Klyk fossil rhizopod complexes is the dominance of eurybiotic soil genera (e.g. Centropyxis, Cyclopyxis, Plagiopyxis and Phryganella). Fluctuations in species abundances and diversity well reflect alternating of warm-wet and cold-dry periods during the Late Pleistocene, in particular the Karginsky interstadial ca 50-30 14C ka BP and Sartan stadial 30-10 ka 14C BP. It is obvious that climate changes were more drastic during the Pleistocene. These changes were at least partly responsible for the disappearance of some rare rhizopod species (e.g. Argynnia sp., Paraquadrulla irregularis). Considering the species diversity as a result of ecological and climatic conditions, we assume that habitat and climatic conditions during the periods with higher species diversity (e.g. Karginsky interstadial), were more favourable than during the Sartan stadial. |
format |
Conference Object |
author |
Müller, Stephan Bobrov, A. Schirrmeister, Lutz Andreev, Andrei Tarasov, P. Riedel, F. |
spellingShingle |
Müller, Stephan Bobrov, A. Schirrmeister, Lutz Andreev, Andrei Tarasov, P. Riedel, F. New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
author_facet |
Müller, Stephan Bobrov, A. Schirrmeister, Lutz Andreev, Andrei Tarasov, P. Riedel, F. |
author_sort |
Müller, Stephan |
title |
New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
title_short |
New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
title_full |
New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
title_fullStr |
New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
title_full_unstemmed |
New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia |
title_sort |
new insights in the testate amoebae fauna mamontovy klyk, laptev sea, russia |
publishDate |
2007 |
url |
https://epic.awi.de/id/eprint/17354/ https://doi.org/10.1016/j.quaint.2007.04.001 https://hdl.handle.net/10013/epic.27706 |
genre |
laptev Laptev Sea permafrost Siberia |
genre_facet |
laptev Laptev Sea permafrost Siberia |
op_source |
EPIC3Abstracts of XVII INQUA Congress 2007, Cairns, Australiath July to 3rd August 2007 Quaternary International, 167-168, 28, 294 p. |
op_relation |
Müller, S. , Bobrov, A. , Schirrmeister, L. orcid:0000-0001-9455-0596 , Andreev, A. orcid:0000-0002-8745-9636 , Tarasov, P. and Riedel, F. (2007) New insights in the testate amoebae fauna Mamontovy Klyk, Laptev Sea, Russia , Abstracts of XVII INQUA Congress 2007, Cairns, Australiath July to 3rd August 2007 Quaternary International, 167-168 . doi:10.1016/j.quaint.2007.04.001. <https://doi.org/10.1016/j.quaint.2007.04.001.> , hdl:10013/epic.27706 |
op_doi |
https://doi.org/10.1016/j.quaint.2007.04.001 |
container_title |
Quaternary International |
container_volume |
167-168 |
container_start_page |
3 |
op_container_end_page |
486 |
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1810455622652526592 |