Neogene herpetofauna, climate, and continental runoff of western Siberia

西西伯利亚新近纪爬行动物、气候和大陆径流

• 批准号: 147416809
• 负责人: Professorin Dr. Madelaine Böhme
• 金额: --
• 依托单位: Institut für Biologie und Umweltwissenschaften (IBU)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/147416809?language=en
• 关键词: Neogene; herpetofauna; climate; continental; runoff

Western Siberia comprises the drainage basin of the major Siberian rivers Irtysh and Ob, both flowing into the Kara Sea of the Arctic Ocean. The annual discharge of both rivers represents more than 20 % of the total Eurasian runoff into the Arctic Ocean. Due to potential freshwater forcing of the Arctic Ocean it is suspected that runoff variations affect ocean circulation and global climate evolution and might have promoted the late Neogene Northern Hemisphere glaciation. However, proxy data are still missing to corroborate this hypothesis. To study the influence of West Siberian runoff on Arctic paleoceanography and to test existing hypothesis about its role for Northern hemisphere glaciation we propose to develop a high-resolution paleo-precipitation database of the last 20 Myrs for West Siberia based on bioclimatic analysis of fossil herpetofauna (amphibians and reptiles). Using this database we are able to calculate Neogene West Siberian continental discharge into the Arctic Ocean. The proposed research will provide extremely valuable proxy-based results for paleoceanography and paleoclimatology. Moreover, by its taxonomicpaleobiologic research it will significantly contribute to the understanding of the evolution and biogeography of cool-temperate amphibians and reptiles of Eurasia

西伯利亚西部包括主要西伯利亚河流额尔齐斯河和鄂毕河的流域，这两条河流都流入北冰洋的喀拉海。这两条河流的年流量占欧亚大陆流入北冰洋总流量的20%以上。由于北冰洋潜在的淡水强迫，人们怀疑径流变化影响海洋环流和全球气候演变，并可能促进了晚新近纪北半球冰川作用。然而，仍然缺乏代理数据来证实这一假设。为了研究西伯利亚西部径流对北极古海洋学的影响，并验证其对北半球冰川作用的现有假设，我们建议基于化石爬行动物（两栖动物和爬行动物）的生物气候分析，建立西西伯利亚近20 myr的高分辨率古降水数据库。利用这个数据库，我们能够计算新近纪西伯利亚西部大陆排放到北冰洋的水量。该研究将为古海洋学和古气候学提供极具价值的代用研究成果。此外，其分类古生物学研究将对了解欧亚大陆寒温带两栖动物和爬行动物的进化和生物地理学具有重要意义

项目成果

A New Giant Salamander (Urodela, Pancryptobrancha) from the Miocene of Eastern Europe (Grytsiv, Ukraine)

• DOI: 10.1080/02724634.2013.722151
• 发表时间: 2013-03
• 作者: D. Vasilyan;M. Böhme;V. M. Chkhikvadze;Y. Semenov;W. Joyce