Changes in the biodiversity of algae in soils along land use gradients within the German Biodiversity Exploratories: community structures and functional roles

德国生物多样性探索中沿土地利用梯度土壤藻类生物多样性的变化：群落结构和功能作用

• 批准号: 60884620
• 负责人: Professor Dr. Thomas Friedl
• 金额: --
• 依托单位: Abteilung Experimentelle Phykologie und Sammlung von Algenkulturen (EPSAG)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/60884620?language=en
• 关键词: Changes; biodiversity; algae; soils; along

Changes in the genetic diversity of algae from various terrestrial habitats within the Biodiversity Exploratories will be studied. Because algae are very susceptible to environmental factors, we hypothesize that different management intensities are reflected in the algal community structures. This will be tested with an expanded sample of 150 forest and 150 grassland experimental plots covering various soil types and different management regimes and, at a smaller scale, coarse woody debris (dead wood) colonized by algae. In close collaboration with various groups focusing on soil and dead wood co-occurence of algae with other (micro-) organismal groups and correlations with abiotic factors will be assessed. With a disturban-ce/exclosure experiment in the soil and PCR-based investigation of microarthropods from dead wood and litter a functional correlation with microarthropods (potential consumers of algae) will be explored, i.e. in as much microarthropods facilitate the dispersal of algae. The spatial variation of the algal communities will be assessed and also how stable they are over time. In addition, Tag-encoded pyrosequencing will be employed to test previously employed clone library- and culture-based methods. Altogether this will provide a more comprehensive picture of the terrestrial algal diversity of the Biodiversity Exploratories.

将研究生物多样性探索站内各种陆地生境中藻类遗传多样性的变化。由于藻类对环境因素非常敏感，我们假设不同的管理强度反映在藻类群落结构。这将与150个森林和150个草原实验区的扩大样本覆盖各种土壤类型和不同的管理制度，并在较小的规模，粗糙的木质残体（枯木）的藻类殖民地进行测试。在密切合作，以各种团体侧重于土壤和枯木共生藻类与其他（微）有机体群体和非生物因素的相关性将进行评估。通过在土壤中的干扰/围封实验和基于PCR的调查，从枯木和凋落物中的微型节肢动物的功能相关性（藻类的潜在消费者）将被探索，即在尽可能多的微型节肢动物促进藻类的扩散。将评估藻类群落的空间变化以及它们随时间的稳定性。此外，将采用标签编码的焦磷酸测序来测试先前采用的基于克隆文库和培养的方法。总之，这将提供一个更全面的图片的陆地藻类多样性的生物多样性探索。