Implementation of soil fauna effects into the forest ecosystem model ANAFORE (ANAFAUNA). (ANAFAUNA)

Understanding soil processes and their role in ecosystem functioning is essential for effective protection, restoration and sustainable use of soils and terrestrial ecosystems. Forest ecosystem models dynamically simulate fluxes of carbon, water, nitrogen and other nutrients through a forest ecosystem. Only models that account for all key interactions between climate, soil and plants can become versatile and reliable tools to predict the effect of different management strategies or future global changes on forests and soils. The effect of soil fauna has been so far neglected in most of similar models. However, with our increasing understanding of the crucial role of fauna on many processes, there is a general consensus on the need to implement these effects into ecosystem models. The main research question of this project is: Does a model that includes an active role of soil fauna provide better prediction of soil processes than previous simpler models? ANAFORE is a stand-scale mechanistic forest model with a detailed soil model. The specific objectives of this project are 1) to develop a new soil submodel that will account for important effects of soil fauna on the simulated fluxes of water, carbon, nitrogen and phosphorus; and integrate it into the ANAFORE model. The modeled effects include fragmentation, bioturbation, aggregation, macropore formation and foodweb effects on soil organic matter decomposition, 2) to optimize and validate the new model using: i) historical experimental data obtained during long-term research at Sokolov post-mining ecosystems LTER site, ii) additional literature and original data collected during the project for modelling purposes; 3) to compare performance of the new ANAFORE soil submodel with the previous version of ANAFORE and the Yasso model as an example of a simple model that predicts organic matter decomposition only based on litter quality and abiotic factors.

Keywords:SOIL COMMUNITIES, MODEL BUILDING, BIOGEOCHEMISTRY, FORESTRY

Disciplines:Animal ecology, Soil ecology