Decomposer - interaction webs and the effect of belowground biota for ecosystem processes

分解者 - 相互作用网和地下生物群对生态系统过程的影响

• 批准号: 5347958
• 负责人: Professor Dr. Francois Buscot
• 金额: --
• 依托单位: Arbeitsgruppe Tierökologie
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5347958?language=en
• 关键词: Decomposer; interaction; webs; effect; belowground

The soil fauna affects soil structure, nutrient mineralization, decomposition processes, and the activity and composition of the microbial community in soil. These effects likely also modify plant performance, plant competition and the use of plant tissue by above-ground herbivores. The proposed project investigates effects of earthworms and soil insects on the above-ground system in grassland communities of different diversity. Earthworm and soil insect density is manipulated in experimental plots differing in plant diversity. The manipulations include the combined exclusion of below-ground insects and above-ground herbivores. It is expected that the response of the above-ground plant and animal community to manipulations of soil animal populations depends on plant species, plant diversity and plant functional group. The differential response is expected to propagate into the herbivore system thereby affecting the structure of the above-ground animal community.

土壤动物影响土壤结构、养分矿化、分解过程以及土壤微生物群落的活性和组成。这些影响可能还会改变植物的性能、植物竞争和地上食草动物对植物组织的利用。拟建项目研究蚯蚓和土壤昆虫对不同多样性草地群落地上系统的影响。在不同植物多样性的试验田中控制蚯蚓和土壤昆虫的密度。这些操作包括联合排除地下昆虫和地上食草动物。地上动植物群落对土壤动物种群操纵的响应取决于植物种类、植物多样性和植物功能群。这种差异反应预计会传播到食草动物系统中，从而影响地上动物群落的结构。