Modeling species richness and biogeographic patterns of Atlantic larger benthic foraminifera and a global perspective in terms of climate change

模拟大西洋大型底栖有孔虫的物种丰富度和生物地理模式以及气候变化的全球视角

• 批准号: 426127743
• 负责人: Dr. Meena Förderer
• 金额: --
• 依托单位: Abteilung Paläontologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/426127743?language=en
• 关键词: Modeling; species; richness; biogeographic; patterns

Species Distribution Modeling (SDM) links actual species occurrence records to local environmental data and thereby allows to predict potential distribution ranges in space and time. It has become an effective tool for conservation management and helps to estimate the actual status and future loss in biodiversity. This is of particular importance for coral reefs that are globally threatened by climate change, pollution, and direct damage. Forecasts are predicting large-scale habitat loss and an equatorial retraction of reef area in the near future. Ocean warming will further lead to changes in biodiversity patterns, invasions of species into higher latitudes and ecological extinction of species especially in lower latitudes. Coral reefs in the Atlantic Ocean are among the most endangered and are exhibiting massive and ongoing hard coral cover decline in many places. Symbiont-bearing Larger Benthic Foraminifera (LBF) are prolific marine calcifiers and are involved in reef-building and stability. They are also perfect proxy organisms for marine biodiversity as their patterns strongly correlate with those of other tropical marine taxa. Analyses on the biogeography of Atlantic LBF have so far been only performed on generic level and selected species.The primary goal of this project is a detailed analysis of species richness patterns of modern LBF created through SDM (1) to display the contemporary patterns and identify the center of LBF diversity in the Atlantic realm, and (2) to provide a global perspective of LBF richness patterns in terms of climate change for the time periods 2040–2050 and 2090–2100. This includes a compilation of high-resolution biogeographic maps and the depiction of latitudinal diversity gradients.The applied-for project will provide a premier comprehensive analysis of the Atlantic realm and thereby complete the picture of LBF biogeographic patterns. It will further help to localize the center of marine biodiversity in the Atlantic Ocean. The additional elaboration of future global scenarios aims to document and quantify the impact of climate change on marine biodiversity patterns. This will allow comparison to predicted patterns of other tropical marine taxa (e. g. corals) and, moreover, may help to refine the delineation of high-priority areas for conservation in Atlantic reefs and worldwide.

物种分布模型（SDM）将实际物种发生记录与当地环境数据联系起来，从而可以预测空间和时间上的潜在分布范围。它已成为保护管理的有效工具，有助于估计生物多样性的实际状况和未来的损失。这对全球受到气候变化、污染和直接损害威胁的珊瑚礁尤为重要。预报预测，在不久的将来，大规模的栖息地将丧失，赤道地区的珊瑚礁面积将缩小。海洋变暖将进一步导致生物多样性格局的变化、物种向高纬度地区的入侵以及物种特别是低纬度地区物种的生态灭绝。大西洋的珊瑚礁是最濒危的珊瑚礁之一，许多地方的硬珊瑚覆盖面积正在大规模持续下降。大型底栖有孔虫（LBF）是一种多产的海洋钙化生物，与珊瑚礁的形成和稳定有关。它们也是海洋生物多样性的完美代理生物，因为它们的模式与其他热带海洋类群的模式密切相关。目前对大西洋LBF的地理学分析仅限于属级和部分物种，本项目的主要目标是通过SDM（1）对现代LBF的物种丰富度模式进行详细分析，以显示当代模式并确定大西洋LBF多样性的中心，（2）从气候变化的角度提供2040-2050年和2090-2100年LBF丰富度模式的全球视角。这包括编制高分辨率海洋地理图和描绘纬度多样性梯度，申请项目将提供对大西洋区域的首要综合分析，从而完成LBF海洋地理模式的图片。它将进一步有助于大西洋海洋生物多样性中心的本地化。进一步阐述未来全球情景的目的是记录和量化气候变化对海洋生物多样性格局的影响。这将允许与其他热带海洋分类群的预测模式进行比较（e。G.此外，这可能有助于更好地划定大西洋珊瑚礁和全世界的高度优先保护区。