Search results for "minéralisation"
showing 7 items of 17 documents
La perte de diversité affecte la stabilité structurelle et fonctionnelle des communautés microbiennes du sol
2013
Les activités anthropiques impactent fortement la diversité des communautés microbiennes du sol. La question se pose de savoir dans quelle mesure ces modifications de diversité peuvent remettre en cause la capacité des sols à assurer les services dont dépendent les sociétés humaines. Pour répondre à cette question, une meilleure compréhension de la relation diversité-stabilité-fonction est indispensable. En 1999, Yachi et Loreau développent le concept d'assurance écologique selon laquelle une forte diversité d'espèces dans un écosystème permet une meilleure stabilité de son fonctionnement. Cette relation a largement été étudié chez les végétaux mais reste encore inconnue chez les microorgan…
Apport de l'isotopie couplée aux outils de biologie moléculaire (DNA/RNA-SIP) pour caractériser la dynamique des communautés impliquées dans la dégra…
2008
Les minéralisations à Cu et à Pb de la Grande Saule, Falck, Moselle
2016
Evaluation of the addition of fertilizing component on microbial communities and decomposition of organic matter in soil
2012
Organic matter (OM) influences many of the soil functions and occupies a central position in the global carbon cycle. At the scale of the agro-ecosystem, primary productivity is dependent on the recycling of soil organic matter (SOM) by the action of decomposers (mainly bacteria and fungi), which mineralize organic compounds, releasing the nutrients needed for plant growth. At a global scale, the recycling of the SOM determines the carbon flux between soil and atmosphere, with major consequences in terms of environmental quality. In this context, the management of SOM stocks in agro-ecosystems is a major issue from which depend the maintenance of the productivity and sustainability of agric…
Evaluation of the effect of an additional fertilizer on the dynamics of microbial community and the decomposition of organic matter in soil
2012
Organic matter (OM) influences many of the soil functions and occupies a central position in the global carbon cycle. At the scale of the agro-ecosystem, primary productivity is dependent on the recycling of soil organic matter (SOM) by the action of decomposers (mainly bacteria and fungi), which mineralize organic compounds, releasing the nutrients needed for plant growth. At a global scale, the recycling of the SOM determines the carbon flux between soil and atmosphere, with major consequences in terms of environmental quality. In this context, the management of SOM stocks in agro-ecosystems is a major issue from which depend the maintenance of the productivity and sustainability of agric…
Effect of bisphenol A on ameloblasts and tooth enamel mineralization
2011
Effect of bisphenol A on ameloblasts and tooth enamel mineralization. Journées de l’école doctorale
Effets du mode de travail du sol sur les microorganismes à l'échelle du profil cultural
2009
Soil tillage modifies the location of crop residues and soil structure and affects microbial populations and activities such as mineralization of soil organic matter. The aim of this work was to compare the effect of two tillage systems (traditional mouldboard ploughing, LT, and reduced tillage, TR) on crop residues distribution and soil structure as well as their consequences on soil microbial biomass (BM), the potential activity of C mineralization (Cmin) and soil bacterial community structure (through T-RFLP). In order to study simultaneously the effects of soil structure modifications and crop residues distribution on these microbial parameters we used a stratified sampling scheme based…