Carbon flux through the soil animal food web: meso- and macrofauna

通过土壤动物食物网的碳通量：中型动物和大型动物

• 批准号: 62052272
• 负责人: Professor Dr. Stefan Scheu
• 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: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/62052272?language=en
• 关键词: Carbon; flux; through; soil; animal

The proposed project examines the trophic transfer of carbon into the soil meso- and macrofauna food web of arable systems. In the field trophic links and the flux of carbon from major basal resources to higher trophic levels of the decomposer system are investigated by stable isotope and lipid analyses. Using manipulations in the field the project aims at (1) quantifying the relative importance of above- and belowground plant carbon resources as basis of the decomposer system, and (2) evaluating the role of the presence of living plants as driving factor for the transfer of plant residue carbon into the decomposer food web. Further, in laboratory experiments the project investigates (3) the flux of carbon from major bacterial and fungal taxa into the decomposer food web, thereby opening the structure of microbivore food chains and quatifying food web links between microorganisms and meso- and marcofauna consumers. The complement of field and laboratory manipulations will allow insight into the structure and functioning of soil meso- and macrofauna food webs of model arable systems in unprecedented detail, and provide essential information on pools and fluxes of carbon through the decomposer system for modelling the dynamics and carbon flux through the full soil decomposer food web.

拟议的项目研究了碳向耕作系统的土壤、中大型动物食物网的营养转移。在野外，通过稳定同位素和类脂分析，研究了从主要基础资源到分解者系统较高营养级别的营养联系和碳的通量。利用实地操作，该项目的目的是(1)量化地上和地下植物碳资源作为分解者系统基础的相对重要性，以及(2)评估活植物的存在作为将植物残渣碳转移到分解者食物网的驱动因素的作用。此外，在实验室实验中，该项目调查(3)主要细菌和真菌分类群的碳流进入分解者食物链，从而打开微生物食物链的结构，并量化微生物与中型和大型动物消费者之间的食物网联系。野外和实验室操作的补充将使人们能够以前所未有的细节深入了解模拟耕地系统的土壤中大型和中大型动物食物网的结构和功能，并提供关于通过分解者系统的碳池和碳通量的基本信息，以模拟整个土壤分解者食物网的动态和碳通量。