Universität zu Köln

Andreev, Andrei A., Nazarova, Larisa B., Lenz, Marlene M., Boehmer, Thomas, Syrykh, Ludmila, Wagner, Bernd ORCID: 0000-0002-1369-7893, Melles, Martin ORCID: 0000-0003-0977-9463, Pestryakova, Ludmila A. and Herzschuh, Ulrike ORCID: 0000-0003-0999-1261 (2022). Late Quaternary paleoenvironmental reconstructions from sediments of Lake Emanda (Verkhoyansk Mountains, East Siberia). J. Quat. Sci., 37 (5). S. 884 - 900. HOBOKEN: WILEY. ISSN 1099-1417

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Abstract

Continuous pollen and chironomid records from Lake Emanda (65 degrees 17'N, 135 degrees 45'E) provide new insights into the Late Quaternary environmental history of the Yana Highlands (Yakutia). Larch forest with shrubs (alders, pines, birches) dominated during the deposition of the lowermost sediments suggesting its Early Weichselian [Marine Isotope Stage (MIS) 5] age. Pollen- and chironomid-based climate reconstructions suggest July temperatures (T-July) slightly lower than modern. Gradually increasing amounts of herb pollen and cold stenotherm chironomid head capsules reflect cooler and drier environments, probably during the termination of MIS 5. T-July dropped to 8 degrees C. Mostly treeless vegetation is reconstructed during MIS 3. Tundra and steppe communities dominated during MIS 2. Shrubs became common after similar to 14.5 ka BP but herb-dominated habitats remained until the onset of the Holocene. Larch forests with shrub alder and dwarf birch dominated after the Holocene onset, ca. 11.7 ka BP. Decreasing amounts of shrub pollen during the Lateglacial are assigned to the Older Dryas and Younger Dryas with T-July similar to 7.5 degrees C. T-July increased up to 13 degrees C. Shrub stone pine was present after similar to 7.5 ka BP. The vegetation has been similar to modern since ca. 5.8 ka BP. Chironomid diversity and concentration in the sediments increased towards the present day, indicating the development of richer hydrobiological communities in response to the Holocene thermal maximum. (C) 2022 The Authors. Journal of Quaternary Science published by John Wiley & Sons Ltd.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Andreev, Andrei A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nazarova, Larisa B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lenz, Marlene M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boehmer, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Syrykh, Ludmila UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED Melles, Martin UNSPECIFIED orcid.org/0000-0003-0977-9463 UNSPECIFIED Pestryakova, Ludmila A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herzschuh, Ulrike UNSPECIFIED orcid.org/0000-0003-0999-1261 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-686759
DOI:	10.1002/jqs.3419
Journal or Publication Title:	J. Quat. Sci.
Volume:	37
Number:	5
Page Range:	S. 884 - 900
Date:	2022
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1099-1417
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BOLSHOY LYAKHOVSKY ISLAND; ENVIRONMENTAL-CHANGES; CLIMATIC-CHANGE; POLLEN RECORD; DATA SET; HOLOCENE; VEGETATION; HISTORY; TEMPERATURE; GLACIATION Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68675