Climate Change Impacts and Biodiversity Interactions in Nordic Salt Marshes

北欧盐沼的气候变化影响和生物多样性相互作用

• 批准号: 451394735
• 负责人: Professor Dr. Kai Jensen
• 金额: --
• 依托单位: Abteilung Angewandte Pflanzenökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/451394735?language=en
• 关键词: Climate; Change; Impacts; Biodiversity; Interactions

The NordSalt project will assess the extent of and plant community biodiversity in Nordic Salt and coastal marshes and evaluate how these ecosystems provide climate and coastal protection related benefits to society (ecosystem services, ES or Nature’s Contributions to People, NCP). The project has particular focus on carbon sequestration (so called « Blue Carbon ») and net greenhouse gas emissions (CO2 and methane) in these ecosystems. Furthermore, historical changes in the distribution of Nordic coastal marsh habitat types (ranging from salt marshes to salt meadows to reed beds) and associated changes in community biodiversity related to climatic and local pressures, including management practices such as grazing, will be assessed. Detailed studies of marsh carbon pools (live and dead plant C stocks, soils pools) and sequestration rates (estimated from 210Pb profiles) in grazed and ungrazed locations will be conducted at 5 case study sites, one from each participating country, selected across the range of Nordic coastal marsh habitats. Greenhouse gas (GHG) flux rates will be seasonally measured at 3 case study sites (Finland, Denmark and Germany) Also, the interactions between marsh plant community biodiversity and climate (temperature) change for net carbon release and storage will be tested experimentally in a common garden climate warming experiment conducted at the University of Hamburg with soil and plant mesocosms collected from the 5 case study sites. Results from the NordSalt field and experimental work will be compared to those from an ongoing in situ climate warming experiment in the German Wadden Sea site established by one of the consortium partners. The goal of NordSalt is to assess the nature, diversity and extent of Nordic coastal marsh habitats, to evaluate their role in climate regulation (net greenhouse gas emissions and Blue Carbon storage) and to assess their vulnerability and change in ecological structure and functions under future climate warming scenarios, local environmental pressures and management decisions. Finally, the project will also evaluate the potential of Nordic salt marsh and related coastal vegetated ecosystems as nature-based solutions (NbS) in a regional and global context. To provide the best basis for these considerations, a comprehensive range of climate and coastal protection related ecosystem services (ES) of these habitats will be evaluated and discussed with relevant policy, management and local stakeholders.

NordSalt 项目将评估北欧盐业和沿海沼泽的植物群落生物多样性的范围，并评估这些生态系统如何为社会提供与气候和沿海保护相关的效益（生态系统服务，ES 或自然对人类的贡献，NCP）。重点关注这些生态系统中的碳封存（所谓的“蓝碳”）和温室气体净排放（二氧化碳和甲烷）此外，北欧沿海沼泽栖息地类型分布的历史变化。将评估沼泽碳库（活植物和死植物碳库、土壤库）的详细研究。放牧和未放牧地点的封存率（根据 210Pb 分布估算）将在 5 个案例研究地点进行，每个参与国各一个，选自北欧沿海沼泽范围将在 3 个案例研究地点（芬兰、丹麦和德国）季节性测量温室气体 (GHG) 通量率。此外，还将通过实验测试沼泽植物群落生物多样性与气候（温度）变化之间的净碳释放和储存之间的相互作用。在汉堡大学进行的一项共同花园气候变暖实验中，从 5 个案例研究地点收集了土壤和植物中生态系统，并将 NordSalt 田地和实验工作的结果与正在进行的原位气候变暖实验的结果进行比较。 NordSalt 的目标是评估北欧沿海沼泽栖息地的性质、多样性和范围，评估其在气候调节（温室气体净排放和蓝碳储存）中的作用。最后，该项目还将评估北欧盐沼和相关沿海植被生态系统作为基于自然的解决方案（NbS）的潜力。为了为这些考虑因素提供最佳基础，将与相关政策、管理层和当地利益相关者一起评估和讨论这些栖息地的与气候和沿海保护相关的生态系统服务（ES）。