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

红树林生态系统作为环境变化的指标（阿曼、印度洋）

• 批准号: 445959060
• 负责人: Privatdozent Dr. Goesta Hoffmann
• 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: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/445959060?language=en
• 关键词: Mangrove; ecosystems; indicators; environmental; change

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.

该项目旨在量化阿曼全新世期间的气候变化。我们建议使用古红树林沉积物作为档案。红树林物种组成对环境条件敏感，特别是海面温度、盐度和海平面。初步实地调查已证实此类矿床的存在。提出的方法包括标准地质实地考察和样品的沉积学/地球化学分析。此外，我们还进行孢粉学调查，以得出物种组成的结论。我们进一步计划对环境 DNA 样本进行测试，以得出红树林特定基因序列是否存在的结论。因此，我们期望能够量化过去约 6000 年降水量的变化。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。