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IMPLIFICATION OF EPHIPPIUM ANALYSIS (CLADOCERA, BRANCHIOPODA, CRUSTACEA) FOR RECONSTRUCTION OF PAST ENVIRONMENTAL CHANGES IN CENTRAL YAKUTIA, RUSSIA

Assoc. Prof. Larisa Frolova, PhD student Anastasia Frolova

First published: 2017-06-20https://doi.org/10.5593/sgem2017/41/s19.061View metrics

Abstract

The aim of our investigation is to reconstruct the local and regional palaeoenvironmental conditions and to highlight the rapid evolution of the thermokarst lake during the Holocene climate optimum. The investigated lake was located in Central Yakutia, Siberia, Russia. The investigated core was collected in a small pingo within a large Central Yakutian thermokarst Khara Bulgunnyakh basin (alas). According to ephippium analysis the formation of the lake coincided with the Holocene climatic optimum. Using cluster analysis we identified three statistically significant ecological zones that reflected changes in the species composition of sub-fossil cladoceran communities and sharp increase in concentrations of ephippia per sample. The period of optimal conditions for Cladocera that took place between 6500 and 6350 cal. yrs. BP is characterized by complex community structures and numerous resisting eggs of cladoceran remains deposited in sediments. Development of the lake ecosystem was rapid and it disappeared quite quickly.

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Publication details

Title
IMPLIFICATION OF EPHIPPIUM ANALYSIS (CLADOCERA, BRANCHIOPODA, CRUSTACEA) FOR RECONSTRUCTION OF PAST ENVIRONMENTAL CHANGES IN CENTRAL YAKUTIA, RUSSIA
Authors
Assoc. Prof. Larisa Frolova, PhD student Anastasia Frolova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2017
Pages
481-486
SWS Citekey
Frolova201719481486
ISSN
1314-2704
ISBN
978-619-7408-06-5
Language
en
Publication type
Conference Paper
Keywords
climate changeagriculturerisksLatvia.
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