A5075367941- Agriculture and Rural Development Research
- Conservation, Biodiversity, and Resource Management
- African Botany and Ecology Studies
- French Urban and Social Studies
- Land Rights and Reforms
- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Soil Geostatistics and Mapping
- African Studies and Ethnography
- Species Distribution and Climate Change
- Local Economic Development and Planning
- Remote Sensing and LiDAR Applications
- Geochemistry and Geologic Mapping
- Soil Carbon and Nitrogen Dynamics
- Animal and Plant Science Education
- Wildlife Ecology and Conservation
- Isotope Analysis in Ecology
- Parasite Biology and Host Interactions
- Rangeland Management and Livestock Ecology
- Soil and Land Suitability Analysis
- African history and culture studies
- Pacific and Southeast Asian Studies
- Insect and Arachnid Ecology and Behavior
Université de Montpellier
2020
Institut de Recherche pour le Développement
2011-2019
Ecologie fonctionnelle & biogéochimie des sols & des agro-systèmes
2011-2019
Terra
2017
Association Vahatra
2016
Institut Agro Montpellier
2011-2013
Château de Longchamp
2013
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2012
Institut de Recherche pour le Développement
2012
École Nationale de la Statistique et de l'Administration Économique
2007
The island of Madagascar has a unique biodiversity, mainly located in the tropical forests island. This biodiversity is highly threatened by anthropogenic deforestation. Existing historical forest maps at national level are scattered and have substantial gaps which prevent an exhaustive assessment long-term deforestation trends Madagascar. In this study, we combined cover (covering period 1953–2000) with recent global annual tree loss dataset (2001–2014) to look six decades fragmentation...
Summary Recent studies have underlined the importance of climatic variables in determining tree height and biomass tropical forests. Nonetheless, effects climate on forest carbon stocks remain uncertain. In particular, application process‐based dynamic global vegetation models has led to contrasting conclusions regarding potential impact change storage. Using a correlative approach based bioclimatic envelope model data from 1771 plots inventoried during period 1996–2013 Madagascar over large...
This work aimed to evaluate the potential of mid‐infrared reflectance spectroscopy (MIRS) predict soil organic and inorganic carbon contents with a 2086‐sample set representative French topsoils (0–30 cm). Ground air‐dried samples collected regularly using 16 × 16‐km grid were analysed for total (dry combustion) (calcimeter) carbon; was calculated by difference. Calibrations MIR spectra partial least square regressions developed 10–80% five random selections samples. Comparisons between...
Abstract Anthropogenic deforestation in tropical countries is responsible for a significant part of global carbon dioxide emissions the atmosphere. To plan efficient climate change mitigation programs (such as REDD +, Reducing Emissions from Deforestation and forest Degradation), reliable forecasts are necessary. Although population density has been recognized key factor deforestation, current methods prediction do not allow explosion that occurring many developing to be taken into account....
Abstract Remote sensing observations such as normalized difference vegetation index (NDVI) trends can provide important insights into past and present land condition. However, they do not directly comprehensive information about our representation of degradation the processes at work. This study aimed to analyze productivity underlying factors in order assess highlight impact definitions on its quantitative assessment, using Mozambique case‐study. Land change were first analyzed NDVI...
Abstract Land degradation and regeneration are complex processes that greatly impact climate regulation, ecosystem service provision, population well‐being require an urgent appropriate response through land use planning interventions. Spatially explicit change models can help decision makers, but traditional regression approaches fail to capture the nonlinearity interactions of underlying drivers. Our objective was a machine learning algorithm combined with high‐resolution data sets provide...
Narrow-ranging species are usually omitted from Species distribution models (SDMs) due to statistical constraints, while they predicted be particularly vulnerable climate change. The recently available high-resolution environmental predictors, along with developed methods enable increase the eligibility of narrow-ranging for SDMs, provided their is well known. We fill a gap knowledge on effect change species. modelled golden mantella frog Mantella aurantiaca and Manapany day gecko Phelsuma...
Abstract Madagascar is recognized both for its unparalleled biodiversity and the high level of threat suffered by this biodiversity, associated in particular with anthropogenic deforestation. Despite sustained efforts to fight poverty curb deforestation, forest cover rapidly decreasing. To try explain why it so difficult stop deforestation Madagascar, we analysed recent process Western through satellite image analysis field surveys. We show that has increased from less than 0.9%/yr on...
The fight against deforestation and forest degradation is now a major challenge for the preservation of global ecosystems. remote sensing monitoring methods that are currently deployed not always adapted to Ivorian context because high cloud cover, diversity shaded crops, land clearing techniques. This study proposes drone-based approach assess intra-annual tree losses in Bossématié classified forest. method used based on detection analysis areas from time series aerial images acquired by...
Abstract We studied the black carbon (BC) content of ca. 405 samples from French topsoil and artificial soil carbonate mixtures. Our protocol involved three main steps: (i) decarbonation by HCl, (ii) elimination non‐pyrogenic organic in a furnace at 375 °C, (iii) quantification residual CHN analysis. BC increased for calcareous soils according to their carbonates content. Subsequent analyses confirmed existence methodological artefact determination only soils. Decarbonation changes thermal...
Abstract The island of Madagascar has a unique biodiversity, mainly located in the tropical forests island. This biodiversity is highly threatened by anthropogenic deforestation. Existing historical forest maps at national level are scattered and have substantial gaps which prevent an exhaustive assessment long-term deforestation trends Madagascar. In this study, we combined cover (covering period 1953-2000) with recent global annual tree loss dataset (2001-2014) to look six decades...
En Côte d’Ivoire, plus de la moitié du couvert forestier (57 %) a disparu en un quart siècle (1990-2015) avec une perte importante biodiversité. Pour mieux comprendre les dynamiques cours et appuyer politiques réduction déforestation, des cartographies fines régulières changements d’occupation d’usage terres sont nécessaires. Cependant, ces études rarement conduites sur grands territoires ou bien elles parfois obsolètes à cause rapidité processus anthropiques sous-jacents. L’objectif cette...
The fragmented and complex landscape in the Miombo makes it a challenge to map disentangle various forest change drivers (FCD) associated with these changes relate them other underlying drivers. To overcome challenges, we developed method spatially of deforestation (smallholder commercial agriculture, mining, clean-cutting charcoal), degradation (selective charcoal production, wildfires, logging), growth (abandoned land, regrowth including plantations) Beira corridor, central Mozambique. We...
Abstract Narrow-ranging species are usually omitted from Species distribution models (SDMs) due to statistical constraints, while they predicted be particularly vulnerable climate change. The recently available high-resolution environmental predictors, along with developed methods enable increase the eligibility of narrow-ranging for SDMs, provided their is well known. We fill a gap knowledge on effect change species. modelled golden mantella frog Mantella aurantiaca and Manapany day gecko...