Synthesis of trait-based community dynamics and stability

在DynaCom的第二阶段，该研究单位的目标是将其基于空间特征的食物网视角推广到随机和确定性群落与生态系统功能之间的动态相互作用。SP - 10的作用是整合不同维度和生物类群的性状信息，并提供在空间背景下响应环境变化的稳定性的多维综合视图。基于第一阶段的进展，我们围绕四个工作包组织了这个项目。在WP 10.1中，我们将整合整个研究单位的资源需求和体型信息，以确定性状组成的异速和化学计量限制。因此，我们解决了一个基本问题，即根据定义，不同生物群体需要以不同的方式测量的性状是否可以反映在营养需求和体型等共同货币中。在WP 10.2中，我们将使用DynaCom中所有生物类群的综合性状信息来建立瓦登海物种池中的总体性状空间，并测试该性状空间中有多少被局部组合和区域元群落所覆盖（填充）。使用一组最近设计的方法（超卷，扩散图），我们提供了DynaCom工作的真正综合。在WP 10.3中，我们将重点转向稳定性，这是响应环境变化的关键属性。在这里，我们将使用DynaCom数据和额外的监测时间序列来提供稳定性的概要分析，以评估空间尺度如何影响元群落的时间稳定性和实验数据，以解决扰动后恢复问题。最后的WP10.4旨在使DynaCom结果可转移到管理上下文中。我们将把人口变化、稀有性和环境驱动因素的信息整合到脆弱性指数中，并探索是否可以将脆弱性与特征联系起来。因此，SP 10完成了综合项目的中心角色，通过整合来自生物体特定评估、模型输出和相关时间序列的信息，解决了DynaCom研究单位的所有中心目标。

In Phase 2 of DynaCom, the research unit aims to generalize its spatial trait-based food-web perspective to the dynamic interplay between stochastic and deterministic assembly of communities and the functioning of ecosystems. The role of SP 10 is to integrate the trait information across the different dimensions and organism groups and to provide a synthetic view on the multiple dimensions of stability in response to environmental changes in a spatial context. Building upon the advances from phase 1, we organized this project around four workpackages. In WP 10.1, we will integrate the information on resource demand and body size across the research unit to identify allometric and stoichiometric constraints of trait composition. Thereby, we address the fundamental question whether traits, which by definition need to be measured in different ways for different organism groups, can be reflected in common currencies such as nutrient demand and body size. In WP 10.2, we will use the integrated trait information across all organism groups in DynaCom to establish the overall trait space in the species pool of the Wadden Sea and to test how much of this trait space is covered (filled) in local assemblage and regional metacommunities. Using a set of recently devised methods (hypervolumes, diffusion maps), we provide a true synthesis of the work in DynaCom. In WP 10.3 we turn the focus to stability is key property in response to environmental change. Here, we will provide a synoptic analysis of stability by using DynaCom data and additional monitoring time series to assess how spatial scaling affects temporal stability in metacommunities and experimental data to address post-disturbance recovery. The final WP10.4 aims at making the DynaCom outcome transferable into a management context. We will integrate information on population changes, rarity, and environmental drivers into a vulnerability index, and explore whether we can associate vulnerability to traits. Thereby, SP 10 fulfills the central role of the synthesis project, which addresses all central objectives of the research unit DynaCom by integrating the information from organism specific assessments, model output and associated time series.