Reconstruction of the response of the biodiversity/migration of Western European vegetation to climate change (CC) from the Oligocene and Mid-Miocene

重建渐新世和中中新世西欧植被的生物多样性/迁移对气候变化（CC）的响应

• 批准号: 2594820
• 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-2594820
• 关键词: Reconstruction; response; biodiversity; migration; Western

Oligocene and Mid-Miocene Climatic Optimum (MMCO) (33.9-15.0Ma). Research Questions: 1. Which species of terrestrial biota were present in the British Isles throughout the Oligocene-Miocene climatic transition? a. Which species show the most sensitivity to climate changes? b. How does sporomorph distribution and frequency change from the end of the Oligocene to the MMCO to the end of the Miocene? 2. Is there evidence for the onset or intensification of the North Atlantic thermohaline circulation throughout the Oligocene-Miocene? a. Do boreal biomes migrate towards the equator towards the end of the Oligocene? b. Do tundra environments expand towards to end of the Oligocene? 3. What were the carbon and nitrogen cycles like in these Cenozoic forests? a. Do carbon and nitrogen concentration results indicate warmer climates in the British Isles from the Oligocene-Miocene? b. Can carbon and nitrogen concentrations be synchronised between boreholes? Research Objectives: 1. Create a reference guide for each individual sporomorph and diatom species found in the core, using a light microscope (LM) and a scanning electron microscope (SEM). a. Create stratigraphic plots for each borehole detailing sporomorph, diatom and geochemical distributions. 2. Infer changes in the North Atlantic Oscillation from changes in carbon and nitrogen concentrations in the British Isles. a. Infer whether tundra/ pioneer-species quantities increase across all boreholes towards the end of the Oligocene and vice versa. 3. Model changes in carbon/nitrogen concentrations for Western Europe. a. Ensure models reproduce Western-European climatic characteristics. b. Ensure models produce a valid refugia fingerprint for the British Isles which can be extrapolated and applied to Western Europe vegetation migration.

渐新世和中新世中期气候最佳（MMCO）（33.9-15.0mA）。研究问题：1。在整个渐新世中新世气候过渡中，不列颠群岛中存在哪种陆地生物群？一个。哪些物种对气候变化的敏感性最高？ b。从渐新世末端到MMCO到中新世末端的孢子形分布和频率如何变化？ 2。是否有证据表明整个渐新世中新世北大西洋热盐循环的发作或加剧？一个。北方生物群落是否向赤道迁移到渐新世末端？ b。苔原环境会扩展到渐新世的末端吗？ 3。在这些新生代森林中，碳和氮循环是什么样的？一个。碳和氮的浓度结果是否表明渐新世中新世的不列颠群岛的气候变暖？ b。可以在钻孔之间同步碳和氮浓度吗？研究目标：1。使用光学显微镜（LM）和扫描电子显微镜（SEM）为核心中发现的每个单独的孢子形成和硅藻物种创建参考指南。一个。为每个钻孔创建地层图，以细节细节孢子形成，硅藻和地球化学分布。 2。推断北大西洋振荡的变化会因不列颠群岛的碳和氮浓度的变化而振荡。一个。推断苔原/先锋物种的数量是否在渐新世结束时在所有井眼中增加，反之亦然。 3。西欧的碳/氮浓度的模型变化。一个。确保模型繁殖西方 - 欧洲的气候特征。 b。确保模型为不列颠群岛生成有效的避难指纹，该指纹可以推断并应用于西欧植被迁移。