Quantitative estimation of Holocene surface salinity variation in the Black Sea using dinoflagellate cyst process length

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• 作者：Kenneth Neil Mertens^a ; ^{kenneth.mertens@ugent.be} ; Lee R. Bradley^b ; ^{l.r.bradley@liverpool.ac.uk} ; Yoshihito Takano^c ; ^{takadino@gmail.com} ; Petra J. Mudie^d ; ^e ; ^{pmudie@nrcan.gc.ca} ; Fabienne Marret^b ; ^{f.marret@liv.ac.uk} ; Ali E. Aksu^e ; ^aaksu@mun.ca ; Richard N. Hiscott^e ; ^{rhiscott@mun.ca} ; Thomas J. Verleye^a ; ^{thomas.verleye@ugent.be} ; Erik A. Mousing^f ; ^{eamousing@bio.ku.dk} ; Ludmila L. Smyrnova^g ; ^{inik48@inbox.ru} ; Siamak Bagheri^h ; ⁱ ; ^{siamakbp@gmail.com} ; Mashhor Mansorⁱ ; ^{mashhor@usm.my} ; Vera Pospelova^j ; ^{vpospe@uvic.ca} ; Kazumi Matsuoka^c ; ^{kazu-mtk@nagasaki-u.ac.jp}
• 关键词：Paleosalinity ; Lingulodinium machaerophorum ; rDNA analysis ; Caspian Sea ; Sea of Azov ; Black Sea ; Marmara Sea
• 刊名：Quaternary Science Reviews
• 出版年：2012
• 期刊代码：78_02773791
• 类别：ear
• 出版时间：16 April, 2012
• 卷：39
• 期：Complete
• 页码：45-59
• 文件大小：936 K

摘要

Reconstruction of salinity in the Holocene Black Sea has been an ongoing debate over the past four decades. Here we calibrate summer surface water salinity in the Black Sea, Sea of Azov and Caspian Sea with the process length of the dinoflagellate cyst Lingulodinium machaerophorum. We then apply this calibration to make a regional reconstruction of paleosalinity in the Black Sea, calculated by averaging out process length variation observed at four core sites from the Black Sea with high sedimentation rates and dated by multiple mollusk shell ages. Results show a very gradual change of salinity from 鈭?4聽卤聽0.91 psu around 9.9聽cal聽ka聽BP to a minimum 鈭?2.3聽卤聽0.91聽psu around 8.5聽cal聽ka聽BP, reaching current salinities of 鈭?7.1聽卤聽0.91聽psu around 4.1聽cal聽ka聽BP. The resolution of our sampling is about 250 years, and it fails to reveal a catastrophic salinization event at 鈭?.14聽cal聽ka聽BP advocated by other researchers. The dinoflagellate cyst salinity-proxy does not record large Holocene salinity fluctuations, and after early Holocene freshening, it shows correspondence to the regional sea-level curve of derived from .