Insect evidence for environmental and climate changes from Younger Dryas to Sub-Boreal in a river floodplain at St-Momelin (St-Omer basin, northern France), Coleoptera and Trichoptera

Ponel, Philippe; Gandouin, Emmanuel; Coope, G. Russell; Andrieu‐Ponel, Valérie; Guiter, Frédéric; Vliët-Lanoé, Brigitte van; Franquet, Évelyne; Brocandel, Marcel; Brulhet, Jacques

doi:10.1016/j.palaeo.2006.09.005

Cited by 21 publications

(16 citation statements)

References 38 publications

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“…These circulation changes coincided with regional cooling in the circum‐North Atlantic southward to lower temperate latitudes (34°N to 45°N), identified in deep‐sea sediment core records by sharp increases in % N . pachyderma (sinistral) and ice‐rafted debris [ Ruddiman and McIntyre , ; Keigwin and Lehman , ], North American and European pollen records [ Watts , ; Peteet , ], European lake sediments [ Björck et al , ; Brauer et al , ], and climate change marker species [ Lemdahl , ; Ponel et al , ]. Younger Dryas‐age glacial landforms chronicle a cessation of ice sheet retreat and in some regions a readvance of alpine glaciers and ice fronts across already deglaciated areas of the maritime Fennoscandian region (Norway, Sweden, and Finland) [ Andersen et al , ; Rainio et al , ; Kleman et al , ; Boulton et al , ].…”

Section: Introductionmentioning

confidence: 99%

Younger Dryas sea level and meltwater pulse 1B recorded in Barbados reef crest coral Acropora palmata

et al. 2016

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The Younger Dryas climate event occurred during the middle of the last deglacial cycle and is marked by an abrupt shift in the North Atlantic polar front almost to its former glacial position, trending east to west. Using high‐precision and high‐accuracy U‐Th‐dated Barbados reef crest coral, Acropora palmata, we generate a detailed sea level record from 13.9 to 9000 years before present (kyr B.P.) and reconstruct the ice volume response to the Younger Dryas cooling. From the mid‐Allerød (13.9 kyr B.P.) to the end of the Younger Dryas (11.65 kyr B.P.), rates of sea level rise decreased smoothly from 20 mm yr−1 to 4 mm yr−1, culminating in a 400 year “slow stand” before accelerating into meltwater pulse 1B (MWP‐1B). The MWP‐1B event at Barbados is better constrained as beginning by 11.45 kyr B.P. and ending at 11.1 kyr B.P. during which time sea level rose 14 ± 2 m and rates of sea level rise reached 40 mm yr−1. We propose that MWP‐1B is the direct albeit lagged response of the Northern Hemisphere ice sheets to the rapid warming marking the end of the Younger Dryas coinciding with rapid warming in the circum‐North Atlantic region and the polar front shift from its zonal to meridional position 11.65 kyr B.P. As predicted by glaciological models, the ice sheet response to rapid North Atlantic warming was lagged by 400 years due to the thermal inertia of large ice sheets. The regional circum‐North Atlantic Younger Dryas climate event is elevated to a global response through sea level changes, starting with the global slowdown in sea level rise during the Younger Dryas and culminating with MWP‐1B. No meltwater pulses are evident at the initiation of the Younger Dryas climate event as is often speculated.

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Section: Introductionmentioning

confidence: 99%

Younger Dryas sea level and meltwater pulse 1B recorded in Barbados reef crest coral Acropora palmata

et al. 2016

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“…Good examples of this approach are provided by multi-proxy studies, such as the Kråkenes Project, which has investigated the ecosystem of a lake in western Norway during the lateglacial and early-Holocene (Birks et al 2000), whilst Ponel et al (2007) and Gandouin et al (2006) have examined environmental and climate change in a French river Xoodplain using a combination of Coleoptera, Trichoptera and Chironomidae.…”

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confidence: 99%

Fossil insects and ecosystem dynamics in wetlands: implications for biodiversity and conservation

et al. 2008

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We review the uses of fossil insects, particularly Coleoptera (beetles) and Chironomidae (non-biting midges) from ancient deposits to inform the study of wetland ecosystems and their ecological and restoration processes. In particular, we focus on two contrasting ecosystems, drawing upon research undertaken by us on British raised mire peats and shallow lake systems, one an essentially terrestrial ecosystem, the other aquatic, but in which wetland insects play an important and integral part. The study of raised mire peats suggests that faunal stability is a characteristic of these wetland systems, over what appear to be extensive periods of time (up to several millennia), whilst studies of shallow lake ecosystems over recent timescales indicates that faunal instability appears to be more common, usually driven by increasing eutrophication. Drawing upon a series of fossil Coleoptera records spanning several thousand years from HatWeld Moors, south Yorkshire, we reconstruct in some detail the mire's ontogeny and Xuctuations in site hydrology and vegetation cover, illustrating the intimate association between substrate, topography and peat development. A comparison between fossil and modern beetle populations indicates that the faunal characteristics of this mire and its adjacent neighbour, Thorne Moors, become established during the early phases of peat development, including its rare endemics, and that the faunal biodiversity on the sites today is dictated by complex site histories. The over-riding characteristic of these faunas is of stability over several thousand years, which has important implications for the restoration of degraded sites, especially those where refugial areas are limited. In contrast, analyses of fossil Chironomidae from shallow 1 C lakes allow researchers to track changes in limnological status and while attempts have been made to reconstruct changes in nutrient levels quantitatively, the chironomids respond indirectly to such changes, typically mediated through complex ecosystem dynamics such as changes in Wsh and/or macrophyte communities. These changes are illustrated via historic chironomid stratigraphies and diversity indices from a range of shallow lakes located across Britain: Slapton Ley, Frensham Great Pond, Fleet Pond, Kyre Pool and Barnes Loch. These sites have shown varying degrees of eutrophication over recent timescales which tends to be associated with a decline in chironomid diversity. While complex functional processes exist within these ecosystems, our evidence suggests that one of the key drivers in the loss of shallow lake chironomid diversity appears to be the loss of aquatic macrophytes. Overall, while chironomids do show a clear response to altered nutrient regimes, multi-proxy reconstructions are recommended for a clear interpretation of past change. We conclude that if we are to have a better understanding of biota at the ecosystem level we need to know more of the complex interactions between diVerent insect groups as well as with other animal and plant communities....

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“…In northern France, insect assemblages from Younger Dryas fluvial deposits recorded at St.-Momelin, yielded these MCR estimates: T max around 10 C and T min close to À12 C (Ponel et al, 2007). MCR reconstructions show that, in contrast to the Late Glacial Interstadial, relatively similar climatic conditions seem to have prevailed in most of northern Europe at this time.…”

Section: Late Glacial Stadial (Gs-1) ¼ Younger Dryasmentioning

confidence: 67%

“…However, all the available beetle evidence suggests that the change was abrupt and intense and probably similar in magnitude to the one at the start of the Late Glacial Interstadial (e.g., Ashworth, 1973;Lemdahl, 1991b, cited in Coope et al, 1998Lemdahl, 2000;Ponel et al, 2007). However, all the available beetle evidence suggests that the change was abrupt and intense and probably similar in magnitude to the one at the start of the Late Glacial Interstadial (e.g., Ashworth, 1973;Lemdahl, 1991b, cited in Coope et al, 1998Lemdahl, 2000;Ponel et al, 2007).…”

Section: Late Glacial Stadial (Gs-1) ¼ Younger Dryasmentioning

confidence: 99%

BEETLE RECORDS | Late Pleistocene of Europe

Lemdahl¹,

Coope²

2013

Encyclopedia of Quaternary Science

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Insect evidence for environmental and climate changes from Younger Dryas to Sub-Boreal in a river floodplain at St-Momelin (St-Omer basin, northern France), Coleoptera and Trichoptera

Cited by 21 publications

References 38 publications

Younger Dryas sea level and meltwater pulse 1B recorded in Barbados reef crest coral Acropora palmata

Younger Dryas sea level and meltwater pulse 1B recorded in Barbados reef crest coral Acropora palmata

Fossil insects and ecosystem dynamics in wetlands: implications for biodiversity and conservation

BEETLE RECORDS | Late Pleistocene of Europe

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