Heterogeneity and Resilience Dynamics of Submerged Macrophytes in the Littoral Zone of Lake Constance (HRSC) Analysis of spatio-temporal changes of submerged macrophytes and their interactions with ecosystem functions by integrating knowledge-based, multi

康斯坦茨湖沿岸地区沉水植物的异质性和恢复力动态（HRSC）通过整合基于知识的多学科分析，分析沉水植物的时空变化及其与生态系统功能的相互作用。

• 批准号: 389595933
• 负责人: Professor Dr. Klaus Schmieder
• 金额: --
• 依托单位: Institut für Landschafts- und Pflanzenökologie (320)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/389595933?language=en
• 关键词: Heterogeneity; Resilience; Dynamics; Submerged; Macrophytes

The littoral vegetation of Lake Constance has changed drastically over the past decades due to fluctuations in nutrient levels. However, although much is known about the resulting changes in species composition, no studies have explored how these changes affect spatial heterogeneity or how they functionally influence dependant biological communities. Similarly lacking are long-term studies testing theoretical concepts in aquatic ecosystems. Therefore, the aims of this joint project are to analyse for the first time the spatial heterogeneity of submersed macrophyte structures in Lake Constance. We will analyse the macrophyte 3D patches extracted from LiDAR and hyperspectral data and quantify the regional patterns in structural heterogeneity and biomass. From this, we will deduce spatially explicit models of functional aspects and analyse the long-term resilience dynamics by transferring these models to the GIS data from 1967, 1978 and 1993. Thus, by integrating long-term, spatially high-resolution GIS data of Lake Constance with a combination of current remote sensing techniques in an aquatic environment, we will create a unique opportunity to better understand how eutrophication and oligotrophication affect spatial heterogeneity of submersed vegetation structures and the resilience capacity of the littoral ecosystem from severe disturbances. Furthermore, we will be able to test theoretical concepts in littoral ecosystems and promote the young research field of landscape limnology.

由于营养水平的波动，博登湖的沿岸的植被在过去几十年中发生了巨大变化。然而，虽然知道很多关于物种组成的变化，没有研究探讨这些变化如何影响空间异质性或它们如何在功能上影响依赖的生物群落。同样缺乏的是长期的研究，以测试水生生态系统中的理论概念。因此，这一联合项目的目的是首次分析博登湖沉水植物结构的空间异质性。我们将分析从LiDAR和高光谱数据中提取的大型植物3D斑块，并量化结构异质性和生物量的区域模式。从这一点上，我们将推导出空间明确的功能方面的模型，并通过将这些模型转移到1967年，1978年和1993年的GIS数据分析长期的弹性动态。因此，通过整合长期的，空间上高分辨率的博登湖地理信息系统数据，结合目前的遥感技术在水生环境中，我们将创造一个独特的机会，更好地了解富营养化和寡营养化如何影响淹没植被结构的空间异质性和严重干扰的沿岸的生态系统的恢复能力。此外，我们将能够测试理论概念在沿岸的生态系统和促进景观湖沼学的年轻研究领域。