Collaborative Research: Climatic and Biotic Transformations of Neogene Mammalian Faunas of Pakistan
Collaborative Research: Climatic and Biotic Transformations of Neogene Mammalian Faunas of Pakistan
批准号:
0958178
负责人:
David Pilbeam
金额:
$9.99万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2010
资助国家:
美国
项目状态:
已结题
起止时间:
2010-09-01 至 2014-08-31
中文摘要
合作研究:巴基斯坦新近纪哺乳动物动物群的气候和生物变化--Catherine Badgley,密歇根大学,Ann Arbor,MIThure Cerling,犹他大学,盐湖城,德克萨斯大学,David PilBeam,哈佛大学,剑桥,MAAbstrum来自四个机构的合作者将研究巴基斯坦中新世化石记录中哺乳动物对全球气候、海平面、构造障碍和移民物种变化的生态和进化反应。Siwalik记录由从巴基斯坦到缅甸的喜马拉雅前陆盆地中新近纪沉积的高度化石组成。在巴基斯坦的波特瓦尔高原,这一记录提供了跨越过去1800万年的连续地层序列中无与伦比的动物和环境变化的历史。在这一时期,哺乳动物古群落表现出世界性群体、特有谱系和残留类群的不断变化的混合。从深海岩心和其他地质证据中可以知道,可能是环境过程驱动了这些动物群的变化。这些过程发生在不同的生物地理尺度上,从全球气候系统和海平面到区域(南亚)构造作用,再到当地洪水盆地及其植被和当地气候。拟议的分析将通过以下方式检验环境过程与生物反应之间的关系:(1)评估18.0至550万年前不同地球动力和气候条件下哺乳动物的动物群变化;(2)整合来自Siwalik记录的多种古气候变化指标,包括利用铁氧化物估计土壤水分的新的地球化学方法、蜗牛螺盖提供的有关降水季节性的信息、来自牙釉质和土壤碳酸盐的稳定同位素,以及利用功能形态学对灭绝哺乳动物的饮食和身体大小的测量。
英文摘要
Collaborative Research: Climatic and Biotic Transformations of Neogene Mammalian Faunas of Pakistan - Catherine Badgley, University of Michigan, Ann Arbor, MIThure Cerling, University of Utah, Salt Lake City, UT, David Pilbeam, Harvard University, Cambridge, MAAbstractCollaborators from four institutions will address the ecological and evolutionary responses of mammals from the Miocene fossil record of Pakistan to changes in global climate, sea level, tectonic barriers, and immigrant species. The Siwalik record consists of highly fossiliferous Neogene sediments deposited in the Himalayan foreland basin from Pakistan to Myanmar. In the Potwar Plateau of Pakistan, this record provides an unparalleled history of faunal and environmental change in a continuous sequence of strata spanning the last 18 million years. During this time period, mammalian paleocommunities exhibited a changing mixture of cosmopolitan groups, endemic lineages, and relict taxa. Environmental processes that may have driven these faunal changes are known from deep-sea cores and other geological evidence. These processes occurred at different biogeographic scales, ranging from those of the global climate system and sea level to regional (South Asian) tectonism to the local floodbasin and its vegetation and local climate. The proposed analyses will test the relationship between environmental processes and biological responses by (1) evaluating mammalian faunal change under different geodynamic and climatic conditions over the interval between 18.0 and 5.5 million years ago, and (2) integrating multiple indicators of changing paleoclimate from the Siwalik record, including a new geochemical method for estimating soil moisture using iron oxides, information from snail opercula about seasonality of precipitation, stable isotopes from tooth enamel and soil carbonate, and measures of diet and body size for extinct mammals using functional morphology.
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Later Miocene Hominoidea and Hominid Origins
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Later Miocene Hominoids and the Origins of Hominidae
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依托单位:
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