Mangrove ecosystems as indicators for environmental change (Oman, Indian Ocean)

该项目旨在量化阿曼全新世期间的气候变化。我们建议将古红树林沉积物用作档案。红树林的物种组成对环境条件特别是海面温度、盐度和海平面十分敏感。初步的实地调查已证明存在这种矿床。建议的方法包括标准地质实地工作和样品的沉积学/地球化学分析。此外，我们进行孢粉学调查，以得出结论的物种组成。我们还计划对环境DNA样本进行测试，以确定是否存在红树林特有的基因序列。因此，我们希望能够量化过去约6000年来降水量的变化。我们假设这些变化与热带辐合带和相关季风带的南移有关。

The project aims at the quantification of climate change during the Holocene in Oman. We propose to use paleo-mangrove deposits as archives. The mangrove species composition is sensitive for environmental conditions, especially sea surface temperature, salinity and sea level. Preliminary field investigations have proven the existence of such deposits. The methods proposed include standard geological fieldwork and sedimentological/geochemical analyses of the samples. Additionally, we perform palynological investigations in order to conclude on the species composition. We further plan to test samples on environmental DNA to conclude on the presence of mangrove specific genetic sequences. As a result, we expect to be able to quantify changes in precipitation over the last ca 6 000 years. We hypothesise that these changes are related to a southward shift of the inter tropical convergence zone and related monsoon belts.