Vegetation and climate since the last interglacial in the Vienne area (France)

Fauquette, Séverine; Guiot, Joël; Menut, Marianne; Beaulieu, Jacques‐Louis de; Reille, Maurice; Guenet, Pascal

doi:10.1016/s0921-8181(98)00054-x

Cited by 40 publications

(31 citation statements)

References 23 publications

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“…The temperature decrease along the Somosaguas section could be even greater (�lS.0± 1.8 cC, from 26.6c to 11.6 cC), if we take into account MAT values calculated when using 8 18 0C0 3 values from the lowest Tl level (Hemandez Femandez et al, 2006). Although evidence from all the Somosaguas levels indicates a tropical-subtropical environment, the difference of around 15 cC between T1 and T3-3 is comparable to those found in the largest oscillations between interglacial and glacial periods from different records in the Pleistocene of Europe (Ponel, 1995;Fauquette et al, 1999;Hemandez Femandez, 2006;Hemandez Femandez et al, 2007). Therefore, it seems that the isotopic record of the mammalian fauna from the Somosaguas sites might reflect a deep change from a warm phase to a temperate phase within the Milankovitch cyclicity typical of the Earth climatic variability.…”

Section: Discussionmentioning

confidence: 63%

Multiproxy reconstruction of the palaeoclimate and palaeoenvironment of the Middle Miocene Somosaguas site (Madrid, Spain) using herbivore dental enamel

Domingo¹,

Cuevas-González²,

Grimes³

et al. 2009

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Discussionmentioning

confidence: 63%

Multiproxy reconstruction of the palaeoclimate and palaeoenvironment of the Middle Miocene Somosaguas site (Madrid, Spain) using herbivore dental enamel

Domingo¹,

Cuevas-González²,

Grimes³

et al. 2009

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Many studies deal with temperate regions of the northern hemisphere (Cheddadi et al, 1998;Fauquette et al, 1999;Lotter et al, 2000;Rosén et al, 2001;Bigler et al, 2002;Magny et al, 2003;Klotz et al, 2003). However, there is an increasing body of work dealing with quantitative climatic reconstructions for other regions of the world (e.g.…”

Section: Introductionmentioning

confidence: 99%

A 100 000‐year record of annual and seasonal rainfall and temperature for northwestern Australia based on a pollen record obtained offshore

Kaars

Deckker

Gingele

2006

J Quaternary Science

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Pollen recovered from core tops of deep‐sea cores from offshore northwestern Western Australia were used to build climatic transfer functions applied to sediment samples from major rivers bordering the ocean in the same region and a deep‐sea core offshore Northwest Cape. Results show for the last 100 000 years, with a gap in the record spanning the 64 000 to 46 000 years interval, that from about 100 000 to 82 000 yr BP, climatic conditions represented by rainfall, temperature and number of humid months, were significantly higher than today's values. For the entire record, the coldest period occurred about 43 000 to 39 000 yr BP but it was wetter than today, whereas the Last Glacial Maximum saw a significant reduction in summer rainfall, interpreted as a result of the absence of monsoonal activity in the region. The Holocene can be divided into two distinct phases: one peaking around 6000 cal. yr BP with highest rainfall and summer temperatures; the second one commencing at 5000 cal. yr BP and showing a progressive decrease in summer rainfall in contrast to an increase in winter rainfall, paralleled by a progressive decrease in temperatures. Copyright © 2006 John Wiley & Sons, Ltd.

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“…5). Using the CCM1 climate statistics is justified by the fact that a number of independent proxy studies in northwestern Europe corroborate cool and dry conditions (Zonneveld, 1996;Peyron et al, 1998;Fauquette et al, 1999). Local pollen data also show that the LGM was significantly dryer and colder (Bortolami et al, 1977).…”

Section: Input and Boundary Conditionsmentioning

confidence: 99%

Predicting Discharge and Sediment flux of the Po River, Italy since the Last Glacial Maximum

Kettner

Syvitski

2008

Analogue and Numerical Modelling of Sedimentary Systems: From Understanding to Prediction

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HydroTrend numerically simulates the flux of water and sediment delivered to the coastal ocean on a daily timescale, based on drainage-basin and climate characteristics. The model predicts how a river may have behaved in the geological past, provided that appropriate assumptions are made regarding past climate and drainage-basin properties.HydroTrend is applied to simulate a high-resolution discharge and sediment flux record for the Po River in Italy since the Last Glacial Maximum (LGM). A validation experiment of 12 years duration under present conditions shows a high correlation (r 2 = 0.72) with 12 years observed daily discharge. Monthly variations in simulated Po River discharge and sediment discharge for this same time period show an even closer agreement (r 2 = 0.97) with the observed data.Community Climate System models (CCSM) indicate that during the LGM the Po drainage-basin climate was much colder and drier than at present. The drainage basin itself was much larger due to a lower sea level. The Bølling period is shown to be an exceptional period in our model study, with significantly higher discharges and sediment loads, as glacier ablation was more dominant.HydroTrend simulations predict an average suspended sediment flux of 46.6 Mt yr −1 and an average bedload of 0.83 Mt yr −1 for the Po River during the Late Pleistocene (21-10 cal. kyr BP). This is ∼75% greater than in the Holocene (10-0 cal. kyr BP), where simulations indicate a suspended sediment flux of 26.7 Mt yr −1 and a bedload of 0.53 Mt yr −1 . The Würm Stadial simulations tend to show the highest suspendedsediment concentrations. However, when considering sediment yield where load is normalized to unit area (mass per square kilometre per time), simulations indicate slightly higher yield for the Holocene as compared with the Late Pleistocene, respectively 336 t km −2 yr −1 versus 283 t km −2 yr −1 , due to an increase in Holocene precipitation. Despite the overall lower yields during the Pleistocene, the model indicates that glacial influence is a dominant factor on the total sediment flux to the ocean.

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Vegetation and climate since the last interglacial in the Vienne area (France)

Cited by 40 publications

References 23 publications

Multiproxy reconstruction of the palaeoclimate and palaeoenvironment of the Middle Miocene Somosaguas site (Madrid, Spain) using herbivore dental enamel

Multiproxy reconstruction of the palaeoclimate and palaeoenvironment of the Middle Miocene Somosaguas site (Madrid, Spain) using herbivore dental enamel

A 100 000‐year record of annual and seasonal rainfall and temperature for northwestern Australia based on a pollen record obtained offshore

Predicting Discharge and Sediment flux of the Po River, Italy since the Last Glacial Maximum

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