Coral reefs on the tin island of Belitung: ‘reefs of hope’ threatened by pollution and runoff (TINBELT)

勿里洞锡岛上的珊瑚礁：“希望之礁”受到污染和径流的威胁 (TINBELT)

• 批准号: 468545728
• 负责人: Dr. Carl-Dieter Garbe-Schönberg
• 金额: --
• 依托单位: Arbeitsgruppe Paläontologie - Historische Geologie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/468545728?language=en
• 关键词: Coral; reefs; tin; island; Belitung

Indonesia is the largest archipelagic nation in the world and harbors approximately 18 percent of the world’s coral reefs. Human dependence on coral reef ecosystem services is highest in the world. However, Indonesia is a rapidly developing country and reefs are impacted by land-based pollution which affects the diversity and coral cover of its coral reefs. In addition, Indonesia’s coral reefs are threatened by the global rise in sea surface temperatures (SSTs) driven by the anthropogenic rise in atmospheric CO2. Anomalously high SSTs cause thermal stress events leading to coral bleaching and mortality with increasing frequency in the near future. One of the greatest scientific uncertainties concerning the decline of coral reefs is how local human impacts, such as coastal pollution, interact with global climate change. The conventional view is that pristine coral reefs are more robust to coral bleaching. However, this has been challenged recently based on the observation that coastal pollution favors corals that are also more robust to elevated water temperatures. Belitung Island (Indonesia) is an ideal site to test these two hypotheses. The island is part of the SE Asian tin belt, and tin has been mined since the 1860s. Coastal runoff and pollution has affected Belitung’s coral reefs over long periods of time. Near-shore coral reefs grow in turbid water and are dominated by large, dome-shaped Porites corals, which are more robust to runoff, pollution and thermal stress than branching corals. TINBELT aims to (I) monitor coral cover and seawater chemistry along near-shore to fore-reef transects at two sites impacted by mining activities; (II) use long-lived Porites corals to monitor water quality in inshore and outer reef settings over time (river runoff: Ba/Ca; inorganic geochemistry: mining activities); (III) reconstruct the accelerated rise of SSTs since 1970 at the reef-scale using coral Sr/Ca ratios and (IV) investigate the corals response to recent thermal stress events using CT images and trace element signatures. Historical and Holocene coral samples are used to establish baselines of natural variability. Part of the project will be dedicated to the development of analytical protocols for the novel LA-ICP-OES and the LASS-ICP-OES/ICP-MS in split-stream mode, which should significantly advance studies on pollution and temperature-related stress in coral reefs. TINBELT addresses a major goal the SPP 2299 (Topic B): How do large-scale stressors such as rising temperatures and ocean acidification interact with local stressors (river runoff, nutrient loads, pollution) over time?

印度尼西亚是世界上最大的群岛，占世界珊瑚礁的约18％。珊瑚礁。此外，印度尼西亚的珊瑚礁是由于大气中二氧化碳的人为升高而导致的，这会导致热量事件导致珊瑚漏气和死亡率，因此，珊瑚色的珊瑚礁是由珊瑚色高sST的全球增长（SST）。未来是当地人的影响，例如沿海污染与全球气候变化相互作用。升高的水温度。在两个地点的岸上transeckt受到采矿活动的影响；使用珊瑚色的SR/CA比和（IV）使用CT CT图像和痕量元素签名的珊瑚式珊瑚式应力事件。在分裂流模式下进行的LASS-ICP-OES/ICP-MS珊瑚礁中的与温度相关的压力。 ） 随着时间的推移？