Coordination Funds

协调基金

• 批准号: 432652500
• 负责人: Professor Dr. Nico Eisenhauer
• 金额: --
• 依托单位: Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv)
• 依托单位国家: 德国
• 项目类别: Research Units
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/432652500?language=en
• 关键词: Coordination; Funds; Coordination; Funds

The previous phase of the Jena Experiment provided novel empirical evidence that ecological and evolutionary processes are intertwined in determining biodiversity-ecosystem functioning (BEF) relationships, and long-term experiments are key not only to gain a basic understanding of the relative importance as well as interactions of these processes but also to apply these concepts to better provisioning of ecosystem functions and stability. However, this prior research predominantly focused on the magnitude of various ecosystem functions, rather than on their stability, and mechanistic insights into biodiversity-stability relationships are especially lacking. It is thus key to continue developing a whole-ecosystem perspective in BEF research. In this interdisciplinary project, we propose to focus on the biodiversity drivers of ecosystem stability in the second phase of the Research Unit, including temporal stability using unique time series and stability in response to extreme climate events, such as drought, flooding, hot spells, and exceptional frost periods. The main hypothesis is that (multifunctional) stability is highest in high-diversity plots and biodiversity-stability relationships increase over time, due to a variety of forms of ecological complementarity. We propose to utilize a combination of approaches, with experiments in the field, iDiv Ecotron, and microcosms, based on biodiversity-stability theory. In the Main Experiment, we have ~two decades of high-resolution, field-level (air temperature, air moisture, radiation), and plot-specific data (soil temperature and moisture) that will allow us to identify extreme climate events. Synthesizing data from the subplots of the ΔBEF Experiment allow us to study the role of soil history in long-term plant diversity effects on ecosystem functioning and stability. The unique database from multiple long-term experiments, combined with repeated measurements of a multitude of different ecosystem functions, allows us to study how biodiversity can buffer ecosystems as affected by climate extremes. We can also use these long-term plots and their assembled communities and excavate soil to expose them to certain environmental conditions like climate extremes in a controlled way in the iDiv Ecotron. Moreover, we can use soil (respectively selected microbial inocula which are used to form a synthetic microbial community) taken from the long-term Main Experiment to perform small-scale microcosm experiments, to test additional stressors or mechanisms under controlled laboratory or greenhouse conditions. All subprojects will closely collaborate in the field (Main Experiment) as well as in the iDiv Ecotron Experiment (ResCUE Experiment) or central microcosm experiment (DrY Experiment), while smaller teams of subprojects will work together in Complementary Microcosm Experiments (CoMic Experiments). Extensive synthesis work will integrate data and information across subprojects and research platforms.

Jena实验的上一个阶段提供了新的经验证据，即生态和进化过程在确定生物多样性生物生态系统功能（BEF）关系方面相互交织在一起，并且长期实验不仅是对这些过程的相对重要性以及对这些概念的相互作用的基本理解的关键，而且还可以将这些概念应用于对生态系统功能和STSTOICITION和StESTOICY和StESTOBICY和STESTICTION。但是，这项先前的研究主要集中在各种生态系统功能的大小上，而不是其稳定性，并且尤其缺乏对生物多样性稳定关系的机械见解。因此，在BEF研究中继续开发全生态系统的观点是关键。在这个跨学科项目中，我们建议在研究单元的第二阶段重点关注生态系统稳定性的生物多样性驱动因素，包括使用独特的时间序列的临时稳定性以及响应极端气候事件的稳定性，例如干旱，洪水，热咒语，热咒语和特殊的霜冻期。主要假设是（多功能）稳定性在高多样性图中最高，并且由于各种形式的生态互补性，生物多样性稳定性关系随着时间而增加。我们建议基于生物多样性稳定性理论，利用方法的组合以及在现场，IDIV Ecotron和Microsms中的实验。在主要实验中，我们拥有〜20年的高分辨率，田间水平（空气温度，空气水分，辐射）和特定于情节的数据（土壤温度和水分），这将使我们能够识别出极端的气候事件。来自ΔBEF实验子图的合成数据使我们能够研究土壤历史在长期植物多样性对生态系统功能和稳定性的影响中的作用。来自多个长期实验的唯一数据库，再加上多种不同生态系统功能的重复测量，使我们能够研究生物多样性如何缓冲气候极端影响的生态系统。我们还可以使用这些长期情节及其组装社区，并挖掘土壤以在IDIV Ecotron中以受控的方式暴露于某些环境条件。此外，我们可以使用从长期主要实验中采取的土壤（分别选择用于形成合成微生物群落的微生物接种物）来执行小规模的缩影实验，以测试受控实验室或温室条件下的其他压力源或机制。所有子项目将在该领域（主要实验）以及IDIV Ecotron实验（救援实验）或中央微观实验（干燥实验）中紧密合作，而较小的次要标题团队将在互补的微观镜头实验（漫画实验）中共同起作用。广泛的综合工作将整合跨个体和研究平台的数据和信息。