Evidence of European ice sheet fluctuation during the last glacial cycle

Boulton, Geoffrey; Dongelmans, P. W.; Punkari, Mikko; Broadgate, Marianne L.

doi:10.1016/s1571-0866(04)80095-2

Cited by 16 publications

(11 citation statements)

References 40 publications

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“…2B), which is significantly younger than the previous moraine-age estimate of È18,000 cal yr B.P. (19)(20)(21). Combined with the Odra Bank radiocarbon ages, these data identify a significant post-LGM fluctuation of the SIS margin, with readvance from north of the Baltic coast to within 50 to 100 km of the LGM Moraine after È15,500 cal yr B.P.…”

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confidence: 48%

“…3, B and C) points to an instability of the SIS that caused it to partially collapse, although the gradual warming that preceded the event suggests the possibility of a nonlinear response of the ice sheet to that warming (31). Such a response may have induced fast flow (32) and drawdown of the low-sloping Baltic Sea ice stream (21), causing retreat of the southeastern SIS margin.…”

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confidence: 97%

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The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet

Rinterknecht

Clark

Raisbeck

et al. 2006

Science

233

216

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The Scandinavian Ice Sheet (SIS) was an important component of the global ice sheet system during the last glaciation, but the timing of its growth to or retreat from its maximum extent remains poorly known. We used 115 cosmogenic beryllium-10 ages and 70 radiocarbon ages to constrain the timing of three substantial ice-margin fluctuations of the SIS between 25,000 and 12,000 years before the present. The age of initial deglaciation indicates that the SIS may have contributed to an abrupt rise in global sea level. Subsequent ice-margin fluctuations identify opposite mass-balance responses to North Atlantic climate change, indicating differing ice-sheet sensitivities to mean climate state.

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confidence: 48%

mentioning

confidence: 97%

The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet

Rinterknecht

Clark

Raisbeck

et al. 2006

Science

233

216

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“…Because species involved in this mutualism are cold‐adapted species ( sensu Stewart et al ., ) and because the current distribution of the plant has been driven by the last range contraction following the Last Glacial Maximum (LGM; in our case related to the termination of the last glacial period; Raymo, ), we used splitting times of lineages (Fig. ): in the working hypothesis H 1 , the genetic clustering of the insect was hypothesized to have followed contraction of plant lineages after complete deglaciation of the main European lowlands (13 kya, Raymo, ), whereas, in the alternative hypothesis, H 2 , the genetic clustering was hypothesized to have followed contraction of plant lineages immediately after the previous Glacial Maximum (23 kya, Boulton et al ., ). The null hypotheses H 0 for each of these scenarios were that the splitting of insects' genetic clusters was not defined by the distribution of plant lineages after the last glacial period.…”

Section: Methodsmentioning

confidence: 97%

Comparative phylogeography of mutualists and the effect of the host on the genetic structure of its partners

Espíndola

Carstens

Alvarez

2014

Biol J Linn Soc Lond

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Whether or not species participating in specialized and obligate interactions display similar and simultaneous demographic variations at the intraspecific level remains an open question in phylogeography. In the present study, we used the mutualistic nursery pollination occurring between the European globeflower Trollius europaeus and its specialized pollinators in the genus Chiastocheta as a case study. Explicitly, we investigated if the phylogeographies of the pollinating flies are significantly different from the expectation under a scenario of plant-insect congruence. Based on a large-scale sampling, we first used mitochondrial data to infer the phylogeographical histories of each fly species. Then, we defined phylogeographical scenarios of congruence with the plant history, and used maximum likelihood and Bayesian approaches to test for plant-insect phylogeographical congruence for the three Chiastocheta species. We show that the phylogeographical histories of the three fly species differ. Only Chiastocheta lophota and Chiastocheta dentifera display strong spatial genetic structures, which do not appear to be statistically different from those expected under scenarios of phylogeographical congruence with the plant. The results of the present study indicate that the fly species responded in independent and different ways to shared evolutionary forces, displaying varying levels of congruence with the plant genetic structure.

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“…This means that several secondary palaeo-ice streams presumably could be active to the south of the Baltic depression during successive phases of the Late Vistulian Glaciation (cf. Punkari 1997; Boulton et al 2004).…”

Section: Last Glacial Maximum In Polandmentioning

confidence: 99%

Quaternary stratigraphy and palaeogeography of Poland

Marks

Dzierżek

Janiszewski

et al. 2016

Acta Geologica Polonica

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Though the stratigraphical and palaeogeographical framework of the Quaternary in Poland is still to be completed, several crucial points have been confirmed recently. The preglacial series, accepted for years as belonging to the Lower Pleistocene, is undoubtedly of Early Pliocene age, with a huge hiatus above almost until the uppermost Lower Pleistocene. The earliest glaciation in Poland (Nidanian) occurred at about 900 ka BP when the ice sheet reached the mid-southern part of the country. The following Podlasian Interglacial embraced the Brunhes/Matuyama boundary in the middle, in a similar fashion to the corresponding Cromerian Complex in Western Europe. The late Early and early Middle Pleistocene interglacials in Poland comprised 2–3 optima each, whereas every one of the younger interglacials was characterised by a single optimum only. The Late Vistulian ice sheet was most extensive in the western part of Poland (Leszno Phase) whereas the younger Poznań Phase was more extensive in the central and eastern part of the country. This was due to the varied distance from the glaciation center in Scandinavia, making the ice sheet margin reach a terminal position in different times. Palaeoclimatological research in the Tatra Mountains has provided new evidence for the atmospheric circulation over Europe. During cold phases of the Pleistocene in Poland a continental climate extended further westwards, quite the opposite that occurring during warmer intervals.

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Evidence of European ice sheet fluctuation during the last glacial cycle

Cited by 16 publications

References 40 publications

The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet

The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet

Comparative phylogeography of mutualists and the effect of the host on the genetic structure of its partners

Quaternary stratigraphy and palaeogeography of Poland

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