0000000001294722
AUTHOR
Cécile Villenave
showing 16 related works from this author
THE FRENCH NATIONAL SOIL QUALITY MONITORING NETWORK (RMQS) AS A SUPPORT FOR MONITORING SOIL BIODIVERSITY: past, present and future programs
2021
Soil biodiversity would represent about 25% of the species on Earth. It is threatened, and although it is essential for human activities, it remains largely unknown. The French National Soil Quality Monitoring Network (RMQS) has a significant impact in removing the grey areas through its programs on soil microorganisms, soil meso and macrofauna, meadow flora, truffles and more recently enzymatic activities. The first distribution maps of bacterial phyla on a national scale and of soil fauna on a regional scale (in Brittany) have been developed. For the white truffle, three new areas of presence have been identified in France. The habitats of the bacteria were also described for the first ti…
A soil biodiversity survey coupled with the national soil quality monitoring network?
2021
International audience; Despite its importance for human activities, soil biodiversity remains largely unknown and threatened. Aware of the need for large-scale monitoring, we studied the feasibility to add a soil biodiversity survey (RMBS-Biodiversity) to the already existing French soil quality monitoring network (RMQS). We worked with soil biodiversity experts to couple RMBS-Biodiversity with RMQS i.e. to choose soil taxons and functions, the methodologies and the sampling design. According to the experts, the sampling design of RMQS fits with a soil biodiversitysurvey. We propose sampling protocols for i) bacteria and fungi, ii) protists, iii) nematodes, iv) mesofauna (particularly spri…
How to add a biodiversity survey to an already existing national pedologic survey? Case study of the french soil quality monitoring network
2021
International audience; Despite its importance for human activities, soil biodiversity remains largely unknown. This gap of knowledge is a strong limit for studies including it such as in the agricultural field. Particularly, in France, no large-scale monitoring of soil biodiversity exist for the moment except for microorganisms (bacteria and fungi). Aware to this need, with the support of OFB, we studied the feasibility to add a soil biodiversity survey (RMQS-Biodiversity) to the already existing French soil quality monitoring network (RMQS). It is a systemic monitoring based on a 16*16 km grid where the sampling is done on a plot at the center of the mesh, which could belong to different …
Les indicateurs de l'état biologique des sols : Guide de sélection selon le type d’application et/ou la problématique
2014
National audience
Démarche statistique pour la sélection des indicateurs par Random Forests pour la surveillance de la qualité des sols
2013
The volume of data, and the large number of biological variables to be tested (one hundred), require analytical techniques, such asRandom Forests, which can overcome the problem of multi-colinearity for the selection of indicators, sensitive to various factors.Random Forests methodology is appropriate for the selection of the most discriminant variables. So, we searched for the best wayto select them, by bringing together all biological variables, representing the Microflora and Fauna. This approach focuses on impactindicators from the Bio2 program, indicators of flora and indicators of accumulation (snails) were not included.This work has been implemented on the three factors of discrimina…
Relevance of different soil fauna and microflora groups in the monitoring of soil biodiversity: RMQS-Biodiv, a French pilot area experience.
2008
PosterFR2116Poster
Application of soil bioindicators for risk assessment, monitoring and soil characterization in contaminated soils. Results from the French national “…
2013
International audience; absent
The RMQS-Biodiversity as a project of large-scale soil biodiversity monitoring in France
2022
International audience
The BioTechnoSol project: Biological dynamics and functioning of a constructed Technosol at the field scale
2010
Shifts in size, genetic structure and activity of the soil denitrifier community by nematode grazing
2010
International audience; Bacterial-feeding nematodes represent an important driver of the soil microbial activity and diversity. This study aimed at characterizing the impact of nematode grazing on a model functional bacterial guild involved in N-cycling, the denitrifiers. Bacterial-feeding nematodes (Cephalobus pseudoparvus) were inoculated into soil microcosms whose indigenous nematofauna had previously been removed. The size, genetic structure and activity of the soil denitrifier community were characterized 15 and 45 days after nematodes inoculation using quantitative PCR of the nirK, nirS and nosZ denitrification genes, fingerprinting of the nirK and nirS genes and denitrification enzym…
Adding a soil biodiversity monitoring to the French National Soil Quality Monitoring Network :the RMQS-Biodiversity
2022
International audience
Agro-Eco Sol, un outil de diagnostic des fonctions du sol basé sur des bioindicateurs bioindicateurs - Structure et règles générales d’interprétation
2022
AGRO-ECO SOL, un outil de diagnostic des fonctions du sol et de conseil basé sur des bioindicateurs - schéma général d’interprétation
2022
Table ronde : Quelles perspectives pour la construction et l’usage d’indicateurs de qualité des sols adaptés aux trajectoires de transition des systè…
2022
La faune du sol tropicale, un facteur de régulation des communautés bactériennes liées aux émissions de gaz à effet de serre
2009
Agro-Eco Sol, un outil de diagnostic des fonctions du sol basé sur des bioindicateurs ; structure et règles générales d’interprétation
2021
National audience