A pollen-based biome reconstruction over the last 3.562 million years in the Far East Russian Arctic – new insights into climate–vegetation relationships at the regional scale

Tarasov, Pavel E.; Andreev, Andrei A.; Anderson, Patricia M.; Lozhkin, Anatoly; Leipe, Christian; Haltia, Eeva; Nowaczyk, Norbert R; Wennrich, Volker; Brigham‐Grette, Julie; Melles, Martin

doi:10.5194/cp-9-2759-2013

Cited by 79 publications

(75 citation statements)

References 66 publications

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“…For details of the method, assignment of the pollen taxa to biomes, and calculation of the biome affinity scores see Tarasov et al (2013). In the current paper, quantitative biome reconstruction results obtained for the lower part of the 5011-1 core dated to ca.…”

Section: Methodsmentioning

confidence: 99%

“…In the current paper, quantitative biome reconstruction results obtained for the lower part of the 5011-1 core dated to ca. 3.58-2.15 Myr BP (BrighamGrette et al, 2013;Tarasov et al, 2013) are presented for comparison with the conventional qualitative interpretation of the pollen data.…”

Section: Methodsmentioning

confidence: 99%

“…General geographical information concerning the geology, modern climate parameters and vegetation cover patterns in the study area has been well described and discussed in details in many other papers of this special issue (e.g., Andreev et al, 2012;Lozhkin and Anderson, 2013;Tarasov et al, 2013) and therefore is not repeated here. In this publication we focus mainly on the vegetation changes across the time spanned from 3.58 to 2.15 Myr BP.…”

Section: A a Andreev Et Al: Late Pliocene And Early Pleistocene Vementioning

confidence: 99%

“…In this study multiproxy evidence suggests extreme warmth and polar amplification during the middle Pliocene, ∼ 3.6 and ∼ 3.4 Myr BP, when temperatures were ∼ 8 • C higher but pCO 2 is estimated at ∼ 400 ppm, comparable with today. Another important finding of BrighamGrette et al (2013) was that the Pliocene-Pleistocene transition at Lake El'gygytgyn was characterized by stepped cooling events and warmer-than-present Arctic summers until ∼ 2.2 Myr BP, clearly postdating the onset of Northern…”

Section: Introductionmentioning

confidence: 99%

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Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El'gygytgyn pollen record

et al. 2014

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Abstract. The 318 m thick lacustrine sediment record from Lake El'gygytgyn, northeastern Russian Arctic cored by the international El'gygytgyn Drilling Project provides unique opportunities for the time-continuous reconstruction of the regional paleoenvironmental history for the past 3.6 Myr. Pollen studies of the lower 216 m of the lacustrine sediments demonstrate their value as an excellent archive of vegetation and climate changes during the Late Pliocene and Early Pleistocene. About 3.5-3.35 Myr BP, the vegetation at Lake El'gygytgyn, now an area of tundra was dominated by spruce-larch-fir-hemlock forests. After ca. 3.35 Myr BP dark coniferous taxa gradually disappeared. A very pronounced environmental change took place ca. 3.31-3.28 Myr BP, corresponding to the Marine Isotope Stage (MIS) M2, when treeless tundra-and steppe-like habitats became dominant in the regional vegetation. Climate conditions were similar to those of Late Pleistocene cold intervals. Numerous coprophilous fungi spores identified in the pollen samples suggest the presence of grazing animals around the lake. Following the MIS M2 event, larch-pine forests with some spruce mostly dominated the area until ca. 2.6 Myr BP, interrupted by colder and drier intervals ca. 3.043-3.025, 2.935-2.912, and 2.719-2.698 Myr BP. At the beginning of the Pleistocene, ca. 2.6 Myr BP, noticeable climatic deterioration occurred. Forested habitats changed to predominantly treeless and shrubby environments, which reflect a relatively cold and dry climate. Peaks in observed green algae colonies (Botryococcus) around 2.53, 2.45, 2.32-2.305, 2.20 and 2.16-2.15 Myr BP suggest a spread of shallow water environments. A few intervals (i.e., 2.55-2.53, ca. 2.37, and 2.35-2.32 Myr BP) with a higher presence of coniferous taxa (mostly pine and larch) document some relatively shortterm climate ameliorations during Early Pleistocene glacial periods.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: A a Andreev Et Al: Late Pliocene And Early Pleistocene Vementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El'gygytgyn pollen record

et al. 2014

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“…A landscape openness index (Tarasov et al 2013;Zhao et al 2015) was calculated by subtracting the maximum forest biome score from the maximum non-forest biome score, to provide a qualitative assessment of changes in vegetation cover. A positive value indicates the dominance of non-forest biomes in the surroundings of the pollen site and increasing values indicate the landscape becoming more open.…”

Section: Assignment Of Pollen Taxa To Biomesmentioning

confidence: 99%

Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka bp

Tian

Cao²,

Dallmeyer

et al. 2017

Veget Hist Archaeobot

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Recent global warming is pronounced in high-latitude regions (e.g. northern Asia), and will cause the vegetation to change. Future vegetation trends (e.g. the "arctic greening") will feed back into atmospheric circulation and the global climate system. Understanding the nature and causes of past vegetation changes is important for predicting the composition and distribution of future vegetation communities. Fossil pollen records from 468 sites in northern and eastern Asia were biomised at selected times between 40 cal ka bp and today. Biomes were also simulated using a climate-driven biome model and results from the two approaches compared in order to help understand the mechanisms behind the observed vegetation changes. The consistent biome results inferred by both approaches reveal that long-term and broad-scale vegetation patterns reflect globalto hemispheric-scale climate changes. Forest biomes increase around the beginning of the late deglaciation, become more widespread during the early and middle Holocene, and decrease in the late Holocene in fringe areas of the Asian Summer Monsoon. At the southern and southwestern margins of the taiga, forest increases in the early Holocene and shows notable species succession, which may have been caused by winter warming at ca. 7 cal ka bp. At the northeastern taiga margin (central Yakutia and northeastern Siberia), shrub expansion during the last deglaciation appears to prevent the permafrost from thawing and hinders the northward expansion of evergreen needle-leaved species until ca. 7 cal ka bp. The vegetationclimate disequilibrium during the early Holocene in the taiga-tundra transition zone suggests that projected climate warming will not cause a northward expansion of evergreen needle-leaved species.

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Quantitative precipitation estimates for the northeastern Qinghai‐Tibetan Plateau over the last 18,000 years

Dodson

Yan

et al. 2017

JGR Atmospheres

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Quantitative information regarding the long‐term variability of precipitation and vegetation during the period covering both the Late Glacial and the Holocene on the Qinghai‐Tibetan Plateau (QTP) is scarce. Herein, we provide new and numerical reconstructions for annual mean precipitation (PANN) and vegetation history over the last 18,000 years using high‐resolution pollen data from Lakes Dalianhai and Qinghai on the northeastern QTP. Hitherto, five calibration techniques including weighted averaging, weighted average‐partial least squares regression, modern analogue technique, locally weighted weighted averaging regression, and maximum likelihood were first employed to construct robust inference models and to produce reliable PANN estimates on the QTP. The biomization method was applied for reconstructing the vegetation dynamics. The study area was dominated by steppe and characterized with a highly variable, relatively dry climate at ~18,000–11,000 cal years B.P. PANN increased since the early Holocene, obtained a maximum at ~8000–3000 cal years B.P. with coniferous‐temperate mixed forest as the dominant biome, and thereafter declined to present. The PANN reconstructions are broadly consistent with other proxy‐based paleoclimatic records from the northeastern QTP and the northern region of monsoonal China. The possible mechanisms behind the precipitation changes may be tentatively attributed to the internal feedback processes of higher latitude (e.g., North Atlantic) and lower latitude (e.g., subtropical monsoon) competing climatic regimes, which are primarily modulated by solar energy output as the external driving force. These findings may provide important insights into understanding the future Asian precipitation dynamics under the projected global warming.

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A pollen-based biome reconstruction over the last 3.562 million years in the Far East Russian Arctic – new insights into climate–vegetation relationships at the regional scale

Cited by 79 publications

References 66 publications

Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El'gygytgyn pollen record

Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El'gygytgyn pollen record

Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka bp

Quantitative precipitation estimates for the northeastern Qinghai‐Tibetan Plateau over the last 18,000 years

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