A2.3 Soil fauna: Diversity and functioning

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PI(s) for this project:

Prof. Dr. Stefan Scheu
PD Dr. Mark Maraun
Prof. Dr. Michael Bonkowski

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

Project description: The proposed project investigates four topics. (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, but with less intensity also Nematoda and Collembola will be investigated. (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) The role of litter diversity for the diversity of bacterial (Testacea) and fungal (Oribatida) feeding soil animals. (4) The genetic variation of two representative species of bacterial (Testacea) and fungal (Oribatida) feeding soil animal species with a temperate to tropical distribution.

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aboveground biomass Agroforestry air temperature altitudinal gradient AM fungi Andes artificial neuronal network Biodiversity biodiversity Biodiversity conservation boosted regression trees C source limitation calcium carbon stocks climate climate change clouds collaborative research project conservation payments database design DOC DOI ECSF Ecuador environmental gradients fire history forest forest and open land forest line forest model FORMIND generalized linear models grassland Holocene hydrochemistry hydrological processes information management system insect herbivores isotopes Lagunas Natosas land-use change landslide leaf dark respiration light-saturated net photosynthesis mean transit time mean–variance metadatabase microcatchment 2 mineral N model comparison Modern Oldfield trap Modern pollen rain mountain forest multivariate adaptive regression splines MySQL native species Newsletter nitrate nitrogen NOAA-AVHRR nutrient manipulation Palaeoecology palynology Pampa parameters estimation Paramo pH phosphorus phosphorus availability Piperaceae Pleistocene Poaceae pollen pollen analysis Páramo Q2 rainwater chemistry realistic forcing reforestation regionalization research group Setaria sphacelata simulation model soil N availability soil organic matter South America South Ecuador species richness estimate statistical modeling stochastic dominance sulphur temporal trends thermal structure tracer tree growth tree seeds tropical montane forest tropical soils weighted model ensembles wood production