Benthic foraminiferal assemblage response to paleoenvironmental changes in the Benguela upwelling system during the Neogene and Quaternary

上新世晚期和更新世中期的重大气候变化可能改变了深海底栖环境的许多方面。深海和表层洋流系统中循环系统的改变可对表层生产力产生重大影响，从而对有机物通量率和流向海底的有机物（食物）类型产生重大影响。通过对ODP 1082和1085站位沉积物的分析，研究了本格拉上升流系统新近纪和第四纪底栖有孔虫组合对古环境变化的响应。特别感兴趣的是（1）古生产力随时间的波动，（2）本格拉系统古生产力的区域变化，（3）底栖有孔虫种群结构的变化和对环流变化的反应，（5）深海有孔虫的进化变化和与气候变化的关系。

Important climatic changes during the upper Pliocene and middle Pleistocene would have altered many aspects of the benthic environment in the deep sea. Alteration of circulation systems in the deep sea and in surficial current systems can have significant influence on surface productivity and thus on organic flux rates and type of organic matter (food) to the sea floor. Benthic foraminiferal assemblage response to paleoenvironmental changes in the Benguela upwelling system during the Neogene and Quaternary will be studied of sediments of ODP Sites 1082 and 1085. Of special interest are (1) fluctuations in paleoproductivity during time, (2) regional variations in paleoproductivity in the Benguela system, (3) changes in benthic foraminiferal population structures and reactions to circulation changes, (5) evolutionary changes of deep sea foraminifers and the relationship to climatic changes.