Projet de recherche BR/175/A1/REPEAT-BE (Action de recherche BR)
Context
Peat soils around the world represent the most concentrated stores of soil carbon. Most of them have been storing carbon dioxyde for thousands of years, but the drainage process, following agricultural measures, has turned most of European peatlands from major carbon sinks to significant sources of carbon released into the atmosphere.
Rewetting is a well-established method for peatlands restoration to improve climate change mitigation and other ecosystem services provision.
However, surprisingly little is known regarding the ability of peatlands restoration’s process to reinstate carbon accumulation, as well as regarding the enhancement of this process - especially in groundwater-fed fens, which are far less investigated in this respect than rainwater-fed bogs, with different mechanisms of peat accumulation.
Main objectives
The REPEAT project aims to clarify the mechanisms of peat formation in fens by linking biogeochemical processes to soil community structure and biodiversity, as well as to plant belowground litter quality, with special focus on the prospects of restoring peat formation.
Main activities
In order to compare undrained, drained and rewetted fens, the REPEAT project will analyse ecosystem processes in four specific study areas: Belgium, Germany,
Poland and Romania, and supplement this study with ex-situ mesocosm and laboratory experiments. Peat formation will be measured in all sites, both by direct methods and by calculating balance between production and decomposition of organic matter. Diversity of producer and decomposer communities will be described and quantified in functional terms. Using modelling tools project results will be translated into ecosystem processes and integrated with terrestrial climate models.
Stakeholders in participating countries will be integrated through workshops, side events, and field days. End-users at the EU, national, and regional level are identified. A key stakeholder (Wetlands International) is involved as a consortium partner. The project will advance the knowledge base for process-oriented restoration of fens and will directly impact the application of related policy. REPEAT project will consolidate the peatland ecology expertise of five institutions covering the most important European fen regions to obtain the best state-of-the-art
knowledge about fen peat formation processes.
REPEAT-BE sur le site web Brain-be
Site du projet
REstoration and prognosis of PEAT formation in fens linking diversity in plant functional traits to soil biological and biogeochemical processes (REPEAT-BE) : final report
Kotovski, Viktor Brussels : Belgian Science Policy, 2020 (SP2961)
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