Objetivo The soil is the largest reservoir of carbon in the terrestrial ecosystems. This raises two main questions: (1) will the soil be a source or a sink of C02; (2) how will the nitrogen availability and mobility be affected? Two cooperations are proposed as additional programmes to the main ongoing project. 1) The Research Institute for Soil Science and Agrochemistry of Bucarest (Dr Alexandra Vasu): This group intends to emphasize the characterization of the sites which are hosting the set of experiments of VAMOS: incubation of 13C and 15N labelled humus layers in a North to South transect from North of Sweden to South of Spain, tranfer of labelled humus from a Northern to a more Southern site in order to simulate temperature increase. It involves an ecosystemic approach with an original interdisciplinar, thermodynamical substantiated methodology concerning the quantitative and qualitative dynamic of the soil organic matter. 2) The Institute of Environmental Biology, Dpt of Ecosystems Studies (Dr Ryszard Laskowski), Krakow: This group already collaborate with the Swedish partner of VAMOS on the relationship between litter quality and decomposition related to climate. According to their recent results on Pinus sylvestris, the N content of the litter increases with the latitude (from 45° N to 70°N). Two questions are raised by this observation: (1) Is this N content gradient related with the potential of nitrogen mineralization of the soil; (2) does this N content gradient affect decomposition? In term of global changes, it can be expected that a shift in climate with an elevation temperature without precipitation change will bring to a increase in N content of the litter while it is known that the increase of atmospheric Co2 leads to a decrease in the N content of the litter. The balance of both this opposite effects will determine the process of decomposition and the size of the soil organic matter reservoir. Programa(s) IC-PECO/COPERNICUS - Scientific and technological cooperation between the European Community and European non-member countries, 1992- Tema(s) 01 - CEEC participation in ENVIRONMENT programme Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Aportación de la UE Sin datos Dirección Route de Mende 1919 34293 MONTPELLIER Francia Ver en el mapa Coste total Sin datos Participantes (2) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Jagellonian University Polonia Aportación de la UE Sin datos Dirección 6,Ingardena 30 060 Kraków Ver en el mapa Coste total Sin datos Research Institute for Soil Science and Agrochemistry Rumanía Aportación de la UE Sin datos Dirección 61,B-Dul Marasti 70000 Bucuresti Ver en el mapa Coste total Sin datos
