Climate in northern Eurasia 6000 years ago reconstructed from pollen data

Tarasov, Pavel E.; Guiot, Joël; Cheddadi, Rachid; Andreev, Andrei A.; Bezusko, L.G.; Blyakharchuk, Tatyana A; Dorofeyuk, N. I.; Filimonova, L. V.; Volkova, V. S.; Zernitskaya, Valentina

doi:10.1016/s0012-821x(99)00171-5

Cited by 86 publications

(55 citation statements)

References 13 publications

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“…It would also imply very low winter P and very thin snow cover, explaining how large populations of grazing mammals could find food during the winters. In contrast to our interpretation and the reconstruction by Tarasov et al (1999a), dryness in these studies has been associated with cold summers (e.g. Frenzel et al (1992) assumed that T VII in Central Siberia was 6-8 C colder than at present).…”

Section: Biome Reconstructioncontrasting

confidence: 99%

“…In contrast, the error bars obtained with the PFT method are often large. A comparison of climate variables inferred from surface pollen by the PFT method with actual climate demonstrates the sufficiently good correlation: 0.93 for T VII and 0.7 for P yr (Tarasov et al, 1999a). Error bars for the reconstructed LGM and mid-Holocene climate anomalies in northern Eurasia are different in terms of confidence level.…”

Section: Biomementioning

confidence: 87%

“…7. Late Glacial and Holocene mean annual precipitation anomalies reconstructed from Lama Lake pollen record by the IS (Klimanov, 1984) and the PFT (Tarasov et al, 1999a) methods. Fig.…”

Section: Quantitative Climate Reconstructionsmentioning

confidence: 99%

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Vegetation and climate changes around the Lama Lake, Taymyr Peninsula, Russia during the Late Pleistocene and Holocene

Andreev

Tarasov

Климанов

et al. 2004

Quaternary International

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A continuous lacustrine sequence from the western part of Lama Lake (69 32 0 N, 90 12 0 E), complemented by a peat sequence from the lake catchment provides the first detailed environmental reconstruction for the Late Glacial and Holocene on the Taymyr Peninsula. Scarce steppe-like communities with Artemisia, Poaceae, and Cyperaceae dominated during the Late Glacial. Tundra-like communities with Betula nana, Dryas, and Salix grew on more mesic sites. There are distinct climatic signals, which may be correlated with the B^lling and Aller^d warming and Middle and Younger Dryas cooling. The Late Glacial/Preboreal transition, at about 10,000 14 C yr BP, was characterized by changes from predominantly open herb communities to shrub tundra ones. Larch forest might have been established as early as 9700-9600 14 C yr BP, whilst shrub alder came to the area ca 9500-9400 14 C yr BP, and spruce did not reach area before ca 9200 14 C yr BP. Spruce-larch forests with shrub alder and tree birch dominated the vegetation around the Lama Lake from ca 9000 14 C yr BP. Dwarf birch communities were also broadly distributed. The role of spruce in the forest gradually decreased after 4500 14 C yr BP. The vegetation cover in the Lama Lake area became similar to the modern larch-spruce forest ca 2500 14 C yr BP. A pollen-based biome reconstruction supports a quantitative interpretation of the pollen spectra. Climate reconstructions obtained with information-statistical and plan-functional-type methods show very similar trends in reconstructed July temperature since ca 12,300 14 C yr BP, while precipitation anomalies are less coherent, especially during the Late Glacial-Holocene transition. r

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Section: Biome Reconstructioncontrasting

confidence: 99%

Section: Biomementioning

confidence: 87%

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Vegetation and climate changes around the Lama Lake, Taymyr Peninsula, Russia during the Late Pleistocene and Holocene

Andreev

Tarasov

Климанов

et al. 2004

Quaternary International

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“…the transfer functions) are established. There are few examples of quantitative palaeoclimate reconstructions in Siberia, and those are mainly from pollen studies Müller et al, 2009;Andreev et al, 2011;Tarasov et al, 1999Tarasov et al, , 2009). To date, there is only one quantitative temperature reconstruction inferred from aquatic diatoms in central Siberia (Kumke et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Holocene climate conditions in central Yakutia (Eastern Siberia) inferred from sediment composition and fossil chironomids of Lake Temje

Nazarova

Lüpfert

Subetto

et al. 2013

Quaternary International

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a b s t r a c tA 380 cm long sediment core from Lake Temje (central Yakutia, Eastern Siberia) was studied to infer Holocene palaeoenvironmental change in the extreme periglacial setting of eastern Siberia during the last 10,000 years. Data on sediment composition were used to characterize changes in the depositional environment during the ontogenetic development of the Lake Temje. The analysis of fossil chironomid remains and statistical treatment of chironomid data by the application of a newly developed regional Russian transfer functions provided inferences of mean July air temperatures (T July ) and water depths (WD). Reconstructed WDs show minor changes throughout the core and range between 80 and 120 cm. All the fluctuations in reconstructed water depth lie within the mean error of prediction of the inference model (RMSEP ¼ 0.35) so it is not possible to draw conclusions from the reconstructions. A qualitative and quantitative reconstruction of Holocene climate in central Yakutia recognized three stages of palaeoenvironmental changes. The early Holocene between 10 and 8 ka BP was characterized by colderthan-today and moist summer conditions. Cryotextures in the lake sediments document full freezing of the lake water during the winter time. A general warming trend started around 8.0 ka BP in concert with enhanced biological productivity. Reconstructed mean T July were equal or up to 1.5 C higher than today between 6.0 ka and 5.0 ka BP. During the entire late Holocene after 4.8 ka BP, reconstructed mean T July remained below modern value. Limnological conditions did not change significantly. The inference of a mid-Holocene climate optimum supports scenarios of Holocene climatic changes in the subpolar part of eastern Siberia and indicates climate teleconnections to the North Atlantic realm.

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“…The Artemisia/Chenopodiaceae (A/C) ratio has been commonly used as an indicator of effective moisture in arid and semi-arid regions where Artemisia and Chenopodiaceae are the dominant plants (El-Moslinmny, 1990;Liu et al, 1999;Tarasov et al, 1999;Zheng et al, 2008;Zhao et al, 2012b), as Artemisia requires more water than Chenopodiaceae during the growing season. Previous studies suggest that the A/C ratio can be used to distinguish the vegetation types in the regions of steppes, steppe deserts and deserts Herzschuh et al, 2003;Luo et al, 2010;Zhao et al, 2012a).…”

Section: Proxy Interpretationmentioning

confidence: 99%

A 94–10ka pollen record of vegetation change in Qaidam Basin, northeastern Tibetan Plateau

Wei

Fan

Zhao

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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Drill core (ISL1A) was obtained from the Qarhan Salt Lake in central eastern Qaidam Basin, northeastern Tibetan Plateau (NE TP). Fossil pollen and the lithology of the core sediment were analyzed in conjunction with AMS 14 C and 230 Th dating. The results indicated that Artemisia and Chenopodiaceae dominated the steppe/desert steppe vegetation developed around the lake between 94 and 51.2 ka, corresponding with the organic-rich silty clay deposited in the core sediments. Pediastrum continuously appeared in the core sediments between 94 and 51.2 ka, indicating freshwater to oligohaline conditions of the paleo-Qarhan Lake during the late marine isotope stage (MIS) 5, MIS 4, and early MIS 3. During the 51.2 to 32.5 ka period, Ephedra dominated shrub-desert vegetation expanded in the basin, while, Pediastrum disappeared in the core sediments. The core sediments consisted of interbedded layers of halite silt and clay-rich halite between 51.2 and 32.5 ka, signifying a shift toward drier hydrologic conditions. Thus, the paleo-Qarhan Lake experienced periods of desiccation and shallow water levels. Artemisia and Chenopodiaceae dominated steppe/desert steppe vegetation appeared again from 32.5 to 25.3 ka, with clay-rich sediments in the core, thereby suggesting an increase of runoff from the lake under relatively wetter climatic conditions. Since 25.3 ka, however, pollen concentrations declined, corresponding with the amount of halite deposited in the core sediment and, suggesting a cold, dry climatic condition during MIS2. Our findings have important implications for understanding complex regional vegetation and climatic responses to large-scale forcings in the Qaidam Basin.

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Climate in northern Eurasia 6000 years ago reconstructed from pollen data

Cited by 86 publications

References 13 publications

Vegetation and climate changes around the Lama Lake, Taymyr Peninsula, Russia during the Late Pleistocene and Holocene

Vegetation and climate changes around the Lama Lake, Taymyr Peninsula, Russia during the Late Pleistocene and Holocene

Holocene climate conditions in central Yakutia (Eastern Siberia) inferred from sediment composition and fossil chironomids of Lake Temje

A 94–10ka pollen record of vegetation change in Qaidam Basin, northeastern Tibetan Plateau

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