The climate in Europe during the Eemian: a multi-method approach using pollen data

Brewer, Simon; Guiot, Joël; Goñi, María Fernanda Sánchez; Klotz, Stefan

doi:10.1016/j.quascirev.2008.08.029

Cited by 134 publications

(145 citation statements)

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“…Overpeck et al 1985;Anderson et al 1989;Waelbroeck et al 1998;Sawada et al 2004;Williams and Shuman 2008). Assemblages dominated by widespread taxa may generate probably unrealistic ''jumps'' as analogues may be selected from geographically and climatically disparate regions (Brewer et al 2008). These jumps can occur when a pollen taxon includes several species with highly distinct geographic and climatic distributions (Williams and Shuman 2008), and are also a problem when the modern calibration datasets are sparse.…”

Section: Advantages and Problems Of Different Methodsmentioning

confidence: 99%

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Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis

et al. 2010

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Subfossil pollen and plant macrofossil data derived from 14 C-dated sediment profiles can provide quantitative information on glacial and interglacial climates. The data allow climate variables related to growingseason warmth, winter cold, and plant-available moisture to be reconstructed. 123Clim Dyn (2011) 37:775-802 DOI 10.1007 surface-pollen assemblages are shown to be accurate and unbiased. Reconstructed LGM and MH climate anomaly patterns are coherent, consistent between variables, and robust with respect to the choice of technique. They support a conceptual model of the controls of Late Quaternary climate change whereby the first-order effects of orbital variations and greenhouse forcing on the seasonal cycle of temperature are predictably modified by responses of the atmospheric circulation and surface energy balance.

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Section: Advantages and Problems Of Different Methodsmentioning

confidence: 99%

“…Bartlein and Whitlock 1993). In a recent study of the Eemian in Europe, Brewer et al (2008) reconstructed climate for a set of sites using seven methods, include many of those described above. The methods were largely coherent during the interglacial period, characterised by quite diverse and information-rich assemblages.…”

Section: Comparative Studiesmentioning

confidence: 99%

Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis

et al. 2010

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“…Individual pollen-based climate reconstruction methods have their own set of advantages and limitations (Birks and Birks, 2006;Brewer et al, 2008;Birks et al, 2010). For this reason we adopted a multi-method approach that would allow us to better assess reconstruction error and provide more precise and robust climate estimates than those based on only one method (e.g.…”

Section: Climate Reconstruction Methodsmentioning

confidence: 99%

Contrasting patterns of climatic changes during the Holocene across the Italian Peninsula reconstructed from pollen data

et al. 2013

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Lake-level records from Italy suggest that patterns of precipitation in the central Mediterranean during the Holocene were divided between the north and south, but a scarcity of reliable palaeoclimatic records in the north and central-southern Mediterranean means new evidence is needed to validate this hypothesis. We provide robust quantitative estimates of Holocene climate in the Mediterranean region using four high-resolution pollen records from northern (Lakes Ledro and Accesa) and southern (Lakes Trifoglietti and Pergusa) Italy. Multiple methods are used to provide an improved assessment of the palaeoclimatic reconstruction uncertainty. The multi-method approach uses the pollenbased weighted averaging, weighted-average partial leastsquares regression, modern analogue technique, and the nonmetric multidimensional scaling/generalized additive model methods. We use independent lake-level data to validate the precipitation reconstructions. Our results support a climatic partition between northern and southern Italy during the Holocene, confirming the hypothesis of opposing mid-Holocene summer precipitation regimes in the Mediterranean. The northern sites (Ledro, Accesa) are characterized by minima for summer precipitation and lake levels during the early to midHolocene, while the southern sites (Trifoglietti, Pergusa) are marked by maxima for precipitation and lake levels at the same time. Both pollen-inferred precipitation and lake levels indicate the opposite pattern during the late Holocene, a maximum in northern Italy and a minimum in southern Italy/Sicily. Summer temperatures show the same partitioning, with warm conditions in northern Italy and cool conditions in Sicily during the early/mid-Holocene, and a reversal during the late Holocene. Comparison with marine cores from the Aegean Sea suggests that climate trends and gradients observed in Italy show strong similarities with those recognized from the Aegean Sea, and more generally speaking in the eastern Mediterranean

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“…It is an enormous challenge but its successful implementation will be a major contribution to quantitative palaeoecology in the future (e.g. Brewer et al 2008).…”

Section: Assemblage Approachmentioning

confidence: 99%

Strengths and Weaknesses of Quantitative Climate Reconstructions Based on Late-Quaternary Biological Proxies

Birks

2011

TOECOLJ

343

284

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Abstract:The importance of reconstructing past environments quantitatively in palaeoecology is reviewed by showing that many ecological questions asked of palaeoecological data commonly involve the reconstructions of past environment. Three basic approaches to reconstructing past climate from palaeoecological data are outlined and discussed in terms of their assumptions, strengths, and weaknesses. These approaches are the indicator-species approach involving bioclimateenvelope modelling; the assemblage approach involving modern analogue techniques and response surfaces; and the multivariate calibration-function approach. Topics common to all approaches are reviewed -presentation and interpretation, evaluation and validation, comparison, and general limitations of climate reconstructions. Challenges and possible future developments are presented and the potential future role of quantitative climate reconstructions in palaeoecology is summarised.

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The climate in Europe during the Eemian: a multi-method approach using pollen data

Cited by 134 publications

References 50 publications

Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis

Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis

Contrasting patterns of climatic changes during the Holocene across the Italian Peninsula reconstructed from pollen data

Strengths and Weaknesses of Quantitative Climate Reconstructions Based on Late-Quaternary Biological Proxies

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