Modem organic-walled dinoflagellate cysts in arctic marine environments and their (paleo-) environmental significance
Modem organic-walled dinoflagellate cysts in arctic marine environments and their (paleo-) environmental significance
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DOI：
10.1007/bf03021752
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
J. Matthiessen;A. Vernal;M. Head;Y. Okolodkov;K. Zonneveld;R. Harland
中科院分区：
文献类型：
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作者：
J. Matthiessen;A. Vernal;M. Head;Y. Okolodkov;K. Zonneveld;R. Harland
北冰洋是世界上最不为人所知的海洋区域之一。由于其对全球气候的重大影响及其恶劣的环境条件，它是古生态学、古气候和古海洋学研究的一个令人着迷的领域。浮游微化石组合的组成，以及硬质部分的微量元素和稳定同位素组成，为我们提供了有关北高纬度地表水的物理和生化参数的宝贵信息。传统上用于第四纪古环境研究的钙质和生物硅质微化石在北冰洋的价值有限，因为它们的丰度低、多样性低和/或保存潜力低。在过去的几十年里，我们对北高纬度地区甲藻及其有机壁包囊的生态学和生物地理学的了解取得了相当大的进展，这些甲藻包囊现在是重建第四纪地表水状况的重要代表。本文概述了甲藻及其包囊的生态学、将活体群落转变为沉积物群落的过程，以及可以从北高纬度甲藻包囊化石组合重建的环境梯度。
The Arctic Ocean is one of the least known marine regions of the world. Because of its major influence on global climate and its hostile environmental conditions it is a fascinating area for paleoecological, paleoclimatic and paleoceanographic research. The composition of planktic microfossil assemblages, and both the trace-element and stable isotope compositions of hard parts, provide us with valuable information about the physical and biochemical parameters of surface waters in the high northern latitudes. Calcareous and biosiliceous microfossils that are traditionally used in Quaternary paleoenvironmental studies are of limited value in the Arctic Ocean because of their low abundances, low diversity and/or low preservation potential. The past several decades have seen considerable progress in our knowledge of the ecology and biogeography of dinoflagellates and their organic-walled cysts in the high northern latitudes, and these dinoflagellate cysts are now important proxies for reconstructing surface water conditions in the Quaternary. This arcticle gives an overview of the ecology of dinoflagellates and their cysts, the processes that transform the living communities into sediment communities, and the environmental gradients that may be reconstructed from fossil dinoflagellate cysts assemblages in the high northern latitudes.