The soil fauna of a tropical montane rain forest: regulatory forces and functioning in the decomposer system

拟议项目总体上继续开展在该综合研究股第一阶段确定和开始的工作。研究了四个主题：(1)厄瓜多尔山地热带雨林中细菌和真菌喂养土壤无脊椎动物对增加的养分(氮和磷)供应的响应(海拔从1000米到3000米的梯度)(‘养分操纵实验’)。作为细菌和真菌取食者的代表，将调查雄蕊纲和Oriatida，但强度较小的还有线虫和弹尾目。(2)增加养分(氮、磷)供应对代表树种凋落物和根部分解的影响(海拔从1000米到3000米)。(3)土壤动物对本地树种退耕还林前草地的重新定居。(4)以温带至热带分布的土壤动物为食的细菌(种皮纲)和真菌(甲壳纲和弹尾目)代表性种的遗传变异。

The proposed project in large continues work established and started in the first phase of this Integrated Research Unit. Four topics are investigated: (1) The response of bacterial and fungal feeding soil invertebrates to increased nutrient (nitrogen and phosphorus) supply in a montane tropical rain forest in Ecuador along an elevation gradient from 1000 to 3000 m (‘Nutrient Manipulation Experiment’). As representatives of bacterial and fungal feeders Testacea and Oribatida will be investigated, but with less intensity also Nematoda and Collembola. (2) Effects of increased nutrient (nitrogen and phosphorus) supply on the decomposition of litter and roots of representative tree species along an elevation gradient from 1000 to 3000 m. (3) Recolonization of former pastureland reforested by native tree species by soil animals. (4) Genetic variation of representative species of bacterial (Testacea) and fungal (Oribatida and Collembola) feeding soil animal species with a temperate to tropical distribution.