globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.12.023
论文题名:
Dinoflagellate cyst paleoecology during the Pliocene–Pleistocene climatic transition in the North Atlantic
作者: Hennissen J.A.I.; Head M.J.; De Schepper S.; Groeneveld J.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 470
起始页码: 81
结束页码: 108
语种: 英语
英文摘要: Dinoflagellate cysts (dinocysts) are widely used as tracers of sea surface conditions in late Quaternary marine records. However, paleoenvironmental reconstructions across the Pliocene–Pleistocene climatic transition and beyond are limited because the hydrologic conditions influencing assemblage compositions may not have a modern analogue, and the ecological optima of extinct dinocyst species are not well known. From a study of two cored sites in the central and eastern North Atlantic, we bypass these issues by statistically analyzing the variations in dinocyst assemblage composition and comparing the results directly to paleoecological parameters (δ18Obulloides, δ18Osalinity, and geochemical proxies for sea surface temperature [SST]) derived from the planktonic foraminifer Globigerina bulloides recovered from the same samples as the dinocysts. Through canonical correspondence analysis we demonstrate the co-variation of seasonality and dinocyst paleoproductivity. We show that Pyxidinopsis braboi is a cold tolerant species with an optimum SST between 12 and 14 °C. We extend the use of Nematosphaeropsis labyrinthus as an indicator of transitional climatic conditions to the Pliocene, we offer evidence for the correlation of Bitectatodinium tepikiense and Filisphaera microornata to high seasonality, and we reiterate an apparent link between Spiniferites mirabilis and eastern North Atlantic water masses. Finally, we confirm that Habibacysta tectata is cold-tolerant rather than a strictly cold-water indicator, that Operculodinium? eirikianum is a cold-intolerant species favoring outer neritic environments, and that Ataxiodinium confusum and Invertocysta lacrymosa are both warm-water species. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67931
Appears in Collections:过去全球变化的重建

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作者单位: Department of Earth Sciences, University of Toronto, 22 Russell Street, Toronto, Ontario, Canada; British Geological Survey, Nicker Hill, Keyworth, Nottingham, United Kingdom; Department of Earth Sciences, Brock University, L2S 3A1, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada; Uni Research Climate, Bjerknes Centre for Climate Research, Nygårdsgaten 112–114, Bergen, Norway; MARUM – Center for Marine Environmental Sciences, University of Bremen, Klagenfurter Strasse, Bremen, Germany

Recommended Citation:
Hennissen J.A.I.,Head M.J.,De Schepper S.,et al. Dinoflagellate cyst paleoecology during the Pliocene–Pleistocene climatic transition in the North Atlantic[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,470
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