Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Conference on Ecosystem dynamics in the Holocene
Год издания: 2020
Идентификатор DOI: 10.1088/1755-1315/438/1/012015
Аннотация: The results of malacofauna-based palaeoenvironment reconstructions for the Late Holocene in the valleys of Bazaikha and Tartat rivers (Krasnoyarsk depression) are presented. Palynological analyses of the flood-plain deposits and radiocarbon dating complemented malacofaunal analysis. Biodiversity of malacofauna is represented by 7 fПоказать полностьюreshwater species and 15 land species. Species belonging to the Valloniidae Morse, 1864 and Lymnaeidae Rafinesque, 1815 families are dominant in the fossil assemblages. The finding of Gastrocopta theeli shell in the Late Holocene deposits of the Bazaikha section is the first one in the territory of Krasnoyarsk depression. This finding supports the relic, spotted character of the geographic range of this species. Emploting malacofauna proxies and the Eleneva Cave reference section palynological record enabled reconstructing Late Holocene palaeoenvironmental conditions in the area. Malacofauna in the valleys of Bazaikha and Tartat rivers developed under the conditions of gradual increase in heat availability and decreasing annual precipitation and warm-period precipitation during the last 2500 years. A reduction of malacofauna diversity 950 years ago was caused by a change in the precipitation regime. © Published under licence by IOP Publishing Ltd.
Журнал: IOP Conference Series: Earth and Environmental Science
Выпуск журнала: Vol. 438, Is. 1
ISSN журнала: 17551307
Издатель: Institute of Physics Publishing 012015