TY - JOUR
T1 - Late glacial and Holocene palaeoenvironmental changes in the Rostov-Yaroslavl' area, West Central Russia
AU - Wohlfarth, Barbara
AU - Tarasov, Pavel
AU - Bennike, Ole
AU - Lacourse, Terri
AU - Subetto, Dmitry
AU - Torssander, Peter
AU - Romanenko, Fedor
N1 - Funding Information:
Research in Russia was financed by the Swedish Institute through the Visby Project and the Swedish Natural Science Research Council. We thank Nagham Mahmoud for performing TS analyses, and Heikki Seppa and an anonymous reviewer for constructive comments on an earlier version of the manuscript.
PY - 2006/4
Y1 - 2006/4
N2 - Three lake sediment sequences (lakes Nero, Chashnitsy, Zaozer'e) from the Rostov-Jaroslavl' region north of Moscow were studied to provide information on palaeoclimatic and palaeoenvironmental changes during the past 15,000 cal yr. The multi-proxy study (i.e., pollen, macrofossils, mineral magnetic measurements, total carbon, nitrogen and sulphur) is chronologically constrained by AMS
14C measurements. Lake Nero provided the longest sedimentary record back to ca. 15,000 cal yr BP, while sediment accumulation began around ca. 11,000 cal yr BP in the two other lakes, possibly due to melting of permafrost. Limnic plant macrofossil remains suggest increased lake productivity and higher mean summer temperatures after 14,500 cal yr BP. While the late glacial vegetation was dominated by Betula and Salix shrubs and various herbs, it appears that Betula sect. Albae became established as early as 14,000 cal yr BP. Major hydrological changes in the region led to distinctly lower lake levels, starting 13,000 cal yr BP in Lake Nero and ca. 9000 cal yr BP in lakes Chashnitsy and Zaozer'e, which are situated at higher elevations. These changes resulted in sedimentary hiatuses in all three lakes that lasted 3500-4500 cal yr. Mixed broad-leaved - coniferous forests were widespread in the area between 8200 and 6100 cal yr BP and developed into dense, species-rich forests between 6100 and 2500 cal yr BP, during what was likely the warmest interval of the studied sequences. Agricultural activity is documented since 500 cal yr BP, but probably began earlier, since Rostov was a major capital by 862 A.D. This apparent gap may be caused by additional sedimentary hiatuses around 2500 and 500 cal yr BP.
AB - Three lake sediment sequences (lakes Nero, Chashnitsy, Zaozer'e) from the Rostov-Jaroslavl' region north of Moscow were studied to provide information on palaeoclimatic and palaeoenvironmental changes during the past 15,000 cal yr. The multi-proxy study (i.e., pollen, macrofossils, mineral magnetic measurements, total carbon, nitrogen and sulphur) is chronologically constrained by AMS
14C measurements. Lake Nero provided the longest sedimentary record back to ca. 15,000 cal yr BP, while sediment accumulation began around ca. 11,000 cal yr BP in the two other lakes, possibly due to melting of permafrost. Limnic plant macrofossil remains suggest increased lake productivity and higher mean summer temperatures after 14,500 cal yr BP. While the late glacial vegetation was dominated by Betula and Salix shrubs and various herbs, it appears that Betula sect. Albae became established as early as 14,000 cal yr BP. Major hydrological changes in the region led to distinctly lower lake levels, starting 13,000 cal yr BP in Lake Nero and ca. 9000 cal yr BP in lakes Chashnitsy and Zaozer'e, which are situated at higher elevations. These changes resulted in sedimentary hiatuses in all three lakes that lasted 3500-4500 cal yr. Mixed broad-leaved - coniferous forests were widespread in the area between 8200 and 6100 cal yr BP and developed into dense, species-rich forests between 6100 and 2500 cal yr BP, during what was likely the warmest interval of the studied sequences. Agricultural activity is documented since 500 cal yr BP, but probably began earlier, since Rostov was a major capital by 862 A.D. This apparent gap may be caused by additional sedimentary hiatuses around 2500 and 500 cal yr BP.
KW - Geochemistry
KW - Holocene
KW - Lake sediments
KW - Late glacial
KW - Macrofossils
KW - Multi-proxy study
KW - Palaeohydrology
KW - Permafrost
KW - Pollen
KW - Thaw lake
KW - West central Russia
UR - http://www.scopus.com/inward/record.url?scp=33645088174&partnerID=8YFLogxK
U2 - 10.1007/s10933-005-3240-4
DO - 10.1007/s10933-005-3240-4
M3 - Article
SN - 0921-2728
VL - 35
SP - 543
EP - 569
JO - Journal of Paleolimnology
JF - Journal of Paleolimnology
IS - 3
ER -