White Sea meromictic lakes as rich archives of paleoenvironmental change

白海分叠湖是古环境变化的丰富档案

• 批准号: 2597778
• 金额: --
• 依托单位: Northumbria University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2597778
• 关键词: White; Sea; meromictic; lakes; rich

Climate change is ever increasingly threatening global lake ecosystems1. It is predicted that approximately 16% of lakes worldwide will see a reduction in their mixing regime and become permanently stratified (meromictic) as a result of climate change by 2100AD2. Within the Arctic and subarctic, climate change has seen a shift in the lakes' thermal and hydrological regimes, directly affecting their biodiversity and productivity 1,23. It is, therefore, imperative to understand how these lakes will respond to future climatic change and how this will affect overall lake productivity. This study will, therefore, examine existing meromictic lakes within the White Sea region and reconstruct their response to past climate change, in order to develop our understanding of how lakes may respond under future climate change.Research Questions1. How have the presently meromictic (permanently stratified) lakes of the White Sea evolved over the Holocene?2. Is there any stratigraphic evidence of rapid deglaciation within the White Sea region being attributed to a rapid rise in temperatures over the mid-late Holocene?3. Is there any stratigraphic evidence of sea level change recorded throughout the Holocene?

气候变化对全球湖泊生态系统的威胁日益严重。据预测，到公元2100AD2，由于气候变化，全球约有16%的湖泊的混合状态将减少，并成为永久分层（单溶解度）。在北极和亚北极地区，气候变化已经改变了湖泊的热和水文制度，直接影响了它们的生物多样性和生产力。因此，必须了解这些湖泊将如何应对未来的气候变化，以及这将如何影响湖泊的整体生产力。因此，本研究将研究白海地区现有的分生湖泊，并重建它们对过去气候变化的响应，以加深我们对湖泊在未来气候变化下如何响应的理解。研究Questions1。目前白海的分生湖（永久分层）在全新世是如何演变的？是否有任何地层证据表明，在全新世中晚期，白海区域内的快速消冰作用可归因于温度的快速上升？在整个全新世有记录的海平面变化的地层证据吗？