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The Sick Man of the Sea: Using eDNA to Investigate the Impacts of Human Activities on the Biodiversity and Genetics of Coral Reef Assemblages

海中病夫：利用 eDNA 调查人类活动对珊瑚礁组合生物多样性和遗传学的影响

基本信息

批准号：
2843356
负责人：
金额：
--
依托单位：
University College London
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2843356
关键词：
Sick Man Sea Using eDNA

项目摘要

Title: Harnessing the power of eDNA to investigate how anthropogenic stressors affect biodiversity on tropical coral reefs, an example of a highly diverse ecosystemCoral reefs are under enormous pressure globally and are declining at a worrying rate. Their demise can be attributed to two main pressures: thermal stress, and the direct impacts of human activities. Coral reefs support a huge diversity of tropical fishes that depend on live coral, and are facing extinction possibilities given the bleak projections for the future of coral reefs. A healthy coral reef supports huge levels of biodiversity in tropical fishes, but declines in diversity, abundance and biomass of these fishes are apparent all over the world and are an early indication of reef deterioration. By monitoring different metrics of tropical fish biodiversity on coral reefs, we can understand how coral reef ecosystems are affected by different stressors, and this can inform which reefs are most vulnerable to biodiversity loss and which reefs are most important for conservation action. This project will harness the power of environmental DNA (eDNA) to monitor the biodiversity of reef-associated tropical fishes on different coral reefs. Environmental DNA is the DNA shed by an organism's natural processes (e.g. dead skin), and can inform which species are present in a given locality. The proposed project will: 1.) establish a baseline of biotic diversity on 'pristine' coral reefs; 2.) investigate how different human activities affect reef fish biodiversity; and 3.) investigate the potential of other molecular biomonitoring methods to complement eDNA.

职务名称：利用eDNA的力量来调查人为压力如何影响热带珊瑚礁的生物多样性，这是一个高度多样化的生态系统的例子珊瑚礁在全球范围内承受着巨大的压力，并以令人担忧的速度下降。它们的消亡可归因于两个主要压力：热应力和人类活动的直接影响。珊瑚礁供养着依赖活珊瑚的各种各样的热带鱼，鉴于对珊瑚礁未来的暗淡预测，它们正面临灭绝的可能性。健康的珊瑚礁支持热带鱼类的巨大生物多样性，但这些鱼类的多样性，丰度和生物量的下降在世界各地都很明显，这是珊瑚礁退化的早期迹象。通过监测珊瑚礁上热带鱼生物多样性的不同指标，我们可以了解珊瑚礁生态系统如何受到不同压力的影响，这可以告知哪些珊瑚礁最容易受到生物多样性丧失的影响，哪些珊瑚礁对保护行动最重要。该项目将利用环境DNA的力量，监测不同珊瑚礁上与珊瑚礁有关的热带鱼的生物多样性。环境DNA是由生物体的自然过程（例如死皮）脱落的DNA，可以告知哪些物种存在于特定的地方。该项目将：（1）建立“原始”珊瑚礁生物多样性基线; 2.）调查不同人类活动如何影响珊瑚鱼的生物多样性;及3.）研究其他分子生物监测方法补充eDNA的潜力。