Collaborative Research: BoCP-Implementation: The impact of climate change on functional biodiversity across spatiotemporal scales at Lake Tanganyika, Africa

合作研究：BoCP-实施：气候变化对非洲坦噶尼喀湖跨时空尺度功能性生物多样性的影响

• 批准号: 2224890
• 负责人: James Russell
• 金额: $ 24.71万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-10-15 至 2027-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2224890&HistoricalAwards=false
• 关键词: Collaborative; Research; BoCP; Implementation; impact

Lake Tanganyika is renowned for its biodiversity, but the spectacular life in this vast and ancient ecosystem is threatened by warming temperatures in ways that are not well-understood. As one of sub-Saharan Africa’s most prolific inland fisheries, a healthy Lake Tanganyika is critically important to the nutrition of four developing nations. If global warming alters internal processes that affect the fish production in Lake Tanganyika, then the food security for millions of people will suffer. Moreover, the impacts of climate change on the characteristics of different groups making up Lake Tanganyika’s open water and lake floor communities, as well as interactions among these groups, are unknown. This project aims to study the response of Lake Tanganyika’s food web to several different scenarios of climate change using sediments, fossils, and genetic tools. The results of the project will reveal how aquatic organisms, particularly economically valuable fish, respond to changes in temperature and precipitation within large tropical lakes. With this information, fisheries and ecosystem managers will be better equipped to safeguard food resources and biodiversity in their areas of responsibility. Finally, this project will include strong international partnership to train students, conduct workshops and develop materials for public audiences.This project will use Lake Tanganyika’s high-resolution sedimentary record to set up a series of historical experiments to track functional biodiversity lake-wide. This framework integrates geochemical, fossil, and genomic tools to assess open water and bottom-dwelling community structures and functions under different scenarios of climate change, as well as the physical and physiological responses of key organisms to these changes. Because the hydroclimatic conditions of the Holocene are underrepresented in historical data, this approach provides the opportunity to evaluate the consequences of environmental change for Lake Tanganyika’s food web in a way that was previously impossible to know. In addition, the project will identify shared and divergent responses to climatic fluctuations across the lake’s diverse fauna, and link these responses to trait-based understanding of community assembly and functioning. This work holds potential for predicting changes in biodiversity amidst severe climatic uncertainty in large tropical lakes.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.

Tanganyika湖以其生物多样性而闻名，但是这个巨大而古老的生态系统中的壮观生活受到温度不理解的方式受到温暖的威胁。作为撒哈拉以南非洲最多产的内陆渔业之一，健康的坦any尼卡湖对于四个发展中国家的营养至关重要。如果全球变暖改变了影响坦any尼湖鱼类生产的内部过程，那么数百万人的粮食安全将受苦。此外，气候变化对构成坦any尼卡湖开放水和湖面社区的不同群体的特征的影响以及这些群体之间的互动是未知的。该项目旨在研究使用沉积物，化石和遗传工具对坦any尼湖食品网的反应对气候变化的几种不同情况。该项目的结果将揭示水生生物，特别是经济上有价值的鱼类如何应对大型热带湖泊中温度和降水的变化。有了这些信息，渔业和生态系统经理将有能力更好地保护食品资源和生物多样性。最后，该项目将包括强大的国际合作伙伴关系，以培训学生，进行讲习班和开发公众观众的材料。该项目将使用Tanganyika湖的高分辨率沉积记录来建立一系列历史实验，以跟踪功能性生物多样性的湖泊范围。该框架整合了地球化学，化石和基因组工具，以评估气候变化不同情况下的开放水和底部居住的社区结构和功能，以及关键有机体对这些变化的物理和身体反应。由于历史数据中全新世的氢化条件的代表性不足，因此该方法提供了评估环境变化对Tanganyika湖食品网的后果，以以前无法知道的方式。此外，该项目将确定对整个湖泊农场动物区系的杂交波动的共同响应，并将这些反应与基于特质的社区集会和功能的理解联系起来。这项工作有可能在大型热带湖泊中严重的气候不确定性中预测生物多样性的变化。该奖项反映了NSF的法定任务，并使用基金会的智力优点和更广泛的影响审查标准，通过评估诚实地认为通过评估来诚实地支持。