Consumer - interaction webs and the effect of aboveground vertebrates and invertebrates on ecosystem processes

消费者互动网络以及地上脊椎动物和无脊椎动物对生态系统过程的影响

• 批准号: 5347940
• 负责人: Professor Dr. Wolfgang W. Weisser
• 金额: --
• 依托单位: Plant Ecology
• 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/5347940?language=en
• 关键词: Consumer; interaction; webs; effect; aboveground

The effects of invertebrate herbivory on ecosystem processes will be tested by excluding above-ground invertebrates from 5 m x 5 m subplots of all experimental plots using biocides. Net primary productivity and other ecosystem processes will be quantified in both treated and unmanipulated parts of the plot to study the relationships between plant diversity, invertebrate herbivory and ecosystem functioning. A second objective of this project is to test the interactions between plant diversity, plant productivity and the structure of the invertebrate community. Above-ground invertebrates will be sampled repeatedly from all grassland plots and allocated to a certain trophic role, i.e. herbivore, predator, parasitoid, or detritivore. Statistical modeling will reveal the influence of plant diversity manipulations on invertebrate density and invertebrate diversity at different trophic levels.

无脊椎动物食草性对生态系统进程的影响将通过从使用杀生物剂的所有实验地块的5米x5米子地块中排除地上无脊椎动物来测试。净初级生产力和其他生态系统过程将在处理和未处理的地块部分进行量化，以研究植物多样性，无脊椎动物植食性和生态系统功能之间的关系。该项目的第二个目标是测试植物多样性、植物生产力和无脊椎动物群落结构之间的相互作用。将从所有草地样地重复采样地面无脊椎动物，并分配到一定的营养角色，即草食动物，捕食者，寄生虫，或食草动物。统计模型将揭示植物多样性操作对无脊椎动物密度和不同营养级无脊椎动物多样性的影响。