Postdoctoral Fellowship: OCE-PRF: Do Pelagic Subsidies Modulate Coral Survivorship in a Warming Ocean?

博士后奖学金：OCE-PRF：远洋补贴是否会调节海洋变暖中的珊瑚生存？

• 批准号: 2307785
• 负责人: Connor Love
• 金额: $ 33.86万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-15 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2307785&HistoricalAwards=false
• 关键词: Postdoctoral; Fellowship; OCE; PRF; Do

Coral reefs occupy less than 1% of the ocean floor yet host more than 25% of all marine biodiversity. Reef ecosystems provide shoreline protection, pharmaceuticals, fishing and tourism revenue, and significant protein to more than one billion people. Currently, coral reefs are under great threat due to rising global ocean temperatures leading to coral bleaching, habitat degradation and loss of ecosystem function. Recent oceanographic advances show that while global ocean temperature rises, regional scale ocean currents, upwelling and internal waves play essential roles in coral survivorship and ecosystem preservation as the ocean continues to warm. This project aims to uncover the mechanisms of this observed phenomenon in a model reef upwelling system in the southern Red Sea. This study will enable identification of reef ecosystems around the world that will remain resilient to climate change due to shifts in regional oceanography. This project will involve support for a U.S. based conference with international scientists who are leading conservation efforts in the Indo-Pacific and the Red Sea. Additionally, students at the University of Rhode Island will contribute to the project and will be mentored in oceanographic data science and analytical chemistry. Overall, this project aims to uncover the complex response of coral reefs to regional oceanographic patterns and global ocean warming with an emphasis on international collaboration and coral reef conservation.Growing evidence suggests that reefs that experience seasonal upwelling or internal waves could serve as vital coral refugia in the next ~50 years. Deep water shoaling onto reefs provides pelagic subsidies in the form of essential nutrients, particles, and plankton that can enhance coral feeding and growth. But there is an essential knowledge gap regarding how reefs that experience upwelling will respond to these subsidies and how this influences coral survivorship to rising global ocean temperatures. The proposed work aims to connect “bottom-up” oceanographic forcing of planktonic food webs and link this to coral trophic dynamics and the subsequent thermal stress tolerance outfalls of the realized trophic niche of corals. Using a multi-faceted analytical chemistry approach involving compound-specific isotope analysis of amino acids, fatty acid analysis and recently developed “stress-test” detectors, the project plans to test three hypotheses. The three hypotheses are aimed to answer vital questions regarding open-ocean reef connectivity, variations in coral feeding to upwelling and coral stress response due to shifts in mixotrophy. This work will answer key mechanistic unknowns of upwelling on coral reefs and enable predictive power for coral survivorship on upwelling reefs around the world.This project is jointly funded by GEO/OCE Postdoctoral Fellowships Program and the Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

珊瑚礁占地不到海底的1％，但拥有所有海洋生物多样性的25％以上。珊瑚礁生态系统提供海岸线保护，药品，钓鱼和旅游收入以及为超过10亿人提供的大量蛋白质。目前，由于全球海洋温度的上升，珊瑚礁受到巨大威胁，导致珊瑚漂白，栖息地退化和生态系统功能的丧失。最近的海洋学进展表明，尽管全球海洋温度升高，但随着海洋的持续变暖，区域尺度的洋流，上升和内部波在珊瑚生存和生态系统制备中起着重要作用。该项目旨在揭示在南部红海模型礁石上升系统中这种观察到的现象的机制。这项研究将使世界各地的珊瑚礁生态系统能够鉴定，这些生态系统将由于区域海洋学的转变而对气候变化保持韧性。该项目将涉及与国际科学家的美国会议的支持，这些国际科学家在印度太平洋和红海领导着保护工作。此外，罗德岛大学的学生将为该项目做出贡献，并将在海洋数据科学和分析化学中考虑。总体而言，该项目旨在揭示珊瑚礁对区域海洋学模式和全球海洋变暖的复杂反应，重点是国际合作和珊瑚礁保护。的发展证据表明，在未来〜50年中，经历季节性上升或内部波动的珊瑚礁可能是季节性上升或内部波浪的珊瑚礁。深水在礁石上的浅滩可提供以必需营养物质，颗粒和浮游生物形式的上层补贴，可增强珊瑚饲料和生长。但是，关于体验上升流的珊瑚礁将如何应对这些补贴以及这如何影响珊瑚生存，这是一个基本的知识差距。提出的工作旨在将浮游食物网的“自下而上”海洋学强迫连接到珊瑚营养动力学以及随后实现的珊瑚营养良好的随后的热应激耐受性排放量。该项目使用涉及氨基酸的复合特异性同位素分析，脂肪酸分析以及最近开发的“应力测试”探测器的多面分析化学方法，该项目计划检验三个假设。这三个假设的目的是回答有关开放海洋礁连接性的重要问题，珊瑚喂养到上升流的变化以及由于混合肉芽症的转移而引起的珊瑚应力反应。这项工作将回答珊瑚礁上升的关键机理未知，并为世界各地的上升礁石上的珊瑚生存能力提供预测能力。该项目由GEO/OCE/OCE博士后奖学金计划共同资助，并既有竞争力的奖励奖励又是对竞争性的授权，并促进了竞争的授权。和更广泛的影响审查标准。