Microbialites as environmental archives from 16 ka BP to the present

微生物岩作为 16 ka BP 至今的环境档案

• 批准号: 63444706
• 负责人: Professorin Dr. Hildegard Westphal
• 金额: --
• 依托单位: Leibniz-Zentrum für Marine Tropenforschung (ZMT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/63444706?language=en
• 关键词: Microbialites; environmental; archives; 16; ka

The proposed project is designed to study the microbialites of French Polynesian reefs as environmental archives in a quasi-continuous record from the post-LGM to the present. The aim is to create a consistent database for different sea-level situations and different hinterland types that will help to unravel the wealth of environmental information stored in microbialites. During IODP Expedition #310 ("Tahiti sea-level"), a reefal record from the end of the Last Glacial Maximum to 10,000 years BP was recovered that shows the peculiarity of being volumetrically dominated by microbialites. These microbialites are currently being studied by the proponent. Previous work by French colleagues focused on cores that had recovered younger reef material ("Papeete cores"; around 13,800-3000 years), and on samples from the modem environment. The proposed study has two aims: (1) closing the gap between 3000 years and the present; (2) creating comparability of the databases of all time slices. Ultimately this will help to better understand (1) the distribution of microbialites through the time interval studied, (2) changes in microbial communities, and (3) the environmental significance of microbialite occurrences.

拟议的项目旨在研究法国波利尼西亚珊瑚礁的微生物作为环境档案，以从LGM到现在的准连续记录中。目的是为不同的海平面情况和不同的腹地类型创建一个一致的数据库，这些数据库将有助于揭示存储在微生物中的大量环境信息。在IODP Expedition＃310（“大溪地海平面”）期间，回收了从最后一次冰川最大值到10，000年的礁石记录，BP的回收率显示出了由微生物占主导地位的特殊性。这些微生物目前正在由支持者研究。法国同事的先前工作重点是恢复了年轻的礁石材料（“ Papeete Cores”；大约13,800 - 3000年）和现代环境中的样品。拟议的研究有两个目的：（1）缩小3000年和现在的差距； （2）创建所有时间切片数据库的可比性。最终，这将有助于更好地理解（1）通过研究的时间间隔，（2）微生物群落的变化以及（3）微生物岩发生的环境意义。