A5107168982- Vector-borne infectious diseases
- Viral Infections and Vectors
- Animal Ecology and Behavior Studies
- Ecology and Vegetation Dynamics Studies
- Meteorological Phenomena and Simulations
- Insect and Pesticide Research
- Vector-Borne Animal Diseases
- Zoonotic diseases and public health
- Oceanographic and Atmospheric Processes
- Ocean Waves and Remote Sensing
- Wind and Air Flow Studies
- Wildlife Ecology and Conservation
- Plant and animal studies
- Avian ecology and behavior
- Land Use and Ecosystem Services
- Yersinia bacterium, plague, ectoparasites research
- Mosquito-borne diseases and control
- Agriculture and Rural Development Research
- Botany and Plant Ecology Studies
- African Botany and Ecology Studies
- Atmospheric aerosols and clouds
- French Urban and Social Studies
- Rabbits: Nutrition, Reproduction, Health
- Urban Green Space and Health
- Plant Virus Research Studies
Centre National de la Recherche Scientifique
1998-2020
Ecosystèmes, Biodiversité, Evolution
2002-2020
Université de Rennes
2002-2020
Biologie Epidémiologie et Analyse de Risque en santé animale
2015
Météo-France
1970-2014
CIC Rennes
2010
Service des Avions Français Instrumentés pour la Recherche en Environnement
2007
Géosciences Rennes
1998
Centre National de Recherches Météorologiques
1991
Abstract. Due to the major role of sun in heating earth's surface, atmospheric planetary boundary layer over land is inherently marked by a diurnal cycle. The afternoon transition, period day that connects daytime dry convective night-time stable layer, still has number unanswered scientific questions. This phase cycle challenging from both modelling and observational perspectives: it transitory, most forcings are small or null turbulence regime changes fully convective, close homogeneous...
The consequences of land use changes are among the most cited causes emerging infectious diseases because they can modify ecology and transmission pathogens. This is particularly true for vector-borne which depend on abiotic (e.g. climate) biotic conditions (i.e. hosts vectors). In this study, we investigated how landscape features affect abundances small mammals Ixodes ricinus ticks, influence their relationship. From 2012 to 2014, questing I. ticks were sampled in spring autumn 24 sites...
The CarboEurope Regional Experiment Strategy (CERES) experiment took place in May and June 2005 France offers a comprehensive database on atmospheric CO 2 boundary layer processes at the regional scale. One “golden” day of CERES is interpreted with mesoscale model Meso‐NH coupled on‐line Interactions between Soil, Biosphere Atmosphere, ‐reactive (ISBA‐A‐gs) surface scheme, allowing full interaction atmosphere. rapid diurnal cycle carbon water energy fluxes parameterized including, e.g.,...
An accurate determination of turbulent exchanges between the ocean and atmosphere is a prerequisite to identify assess mechanisms interaction that control part variability in two media over wide range spatial temporal scales. extended dataset for estimating air–sea fluxes (representing nearly 5700 h turbulence measurements) has been collected since 1992 during six dedicated experiments performed Atlantic Ocean Mediterranean Sea. This paper presents methodology used through successive...
The far wake of a sphere towed horizontally in linearly stratified fluid with Froude numbers F ∈ (0.25,12.7) and Reynolds Re [150,30 000] is investigated. Regardless the initial number, becomes quasi two dimensional at times large compared Brunt–Väisälä period. For F≤4.5, horizontal motions are coherent over whole depth wake. takes form regular von Kármán street for F≤1.5 but irregular larger F. F≥4.5 consists of, vertically incoherent, several layers. transition occurs smoothly by vertical...
Abstract Overexploitation of forests by humans can lead to highly fragmented populations forest-dependent species that have poor dispersal abilities. We tested the influence habitat quality, landscape structure and human pressure on densities Barbary macaque Macaca sylvanus in largest wild population, Middle Atlas Morocco. surveyed 14 forest fragments 5–142 km 2 are separated from each other an inhospitable matrix. estimated quality these patches analysing vegetation intensity pressure....
Abstract. Due to the major role of sun in heating earth's surface, atmospheric planetary boundary layer over land is inherently marked by a diurnal cycle. The afternoon transition, period day that connects daytime dry convective night-time stable layer, still raises several scientific issues. This phase cycle challenging from both modeling and observational perspectives: it transitory, most forcings are small or null turbulence regime changes fully regime, close homogeneous isotropic, toward...
Small mammals are key components of numerous tick-borne disease systems, as hosts for immature ticks and pathogen reservoirs. To study the factors influencing infection in small mammals, we trapped collected questing spring autumn 2012 2013 at 24 sites a 10 × 15 km rural landscapes (Brittany, France). Tissue samples were screened by real-time PCR Anaplasma phagocytophilum Borrelia burgdorferi sensu lato. Of two dominant mammal species captured, bank voles (Myodes glareolus) had higher...
Article Méthode d'étude du régime alimentaire d'un rongeur polyphage (Apodemus sylvaticus L., 1758) par l'analyse microscopique des fèces was published on January 1, 1985 in the journal Mammalia (volume 49, issue 4).
Abstract Turbulent fluxes of momentum, sensible heat and water vapour were calculated using both the eddy covariance (EC) inertial dissipation (ID) methods applied to data collected on board research vessel La Thalassa during 40 days EQUALANT99 oceanographic campaign. The aim this experiment was establish accurate parametrizations air–sea for equatorial Atlantic area from a large dataset. However, accuracy turbulent measured aboard ships is strongly affected by distortion airflow patterns...
In Europe, ticks are major vectors of both human and livestock pathogens (e.g. Lyme disease, granulocytic anaplasmosis, bovine babesiosis). Agricultural landscapes, where animal breeding is a activity, constitute mosaic habitat types various quality for tick survival used at different frequencies by wild domestic hosts across seasons. This heterogeneity, in time space, conditions the dynamics these host-vector-pathogen systems thus drives acarological risk (defined as density infected...
We investigated, over the course of two years, importance landscape context on abundance aphids and their natural carabid enemies, which may help to develop effective strategies for reduction aphid outbreaks in agricultural landscapes. This was undertaken 12 wheat fields maize each year an western France. Our study area characterized by hedgerows surrounding arable permanent grasslands. Some areas did not change much a few decades, while field enlargement removal hedges appeared some places...
In this paper experimental results on the near field of flow past a sphere in linearly stratified medium are presented. Emphasis is placed variation separation line with internal Froude number F=U/NR and also Reynolds Re=2RU/ν, where U R are, respectively, velocity radius sphere, N Brünt–Väisälä frequency (rad sec−1 ), ν cinematic viscosity. It shown that range 200<Re<30 000 primarily conditioned by when F≤1. The condition F=1 defines resonance state between wave field. case...
The Biological Field Station of Paimpont (Station Biologique de Paimpont, SBP), owned by the University Rennes and located in Brocéliande Forest Brittany (France), has been hosting student scientific research field trips during last 60 years. study area SBP is a landscape mosaic 17 ha composed gorse moors, forests, prairies, ponds creeks. Land use evolved over time. Historical surveys students researchers focused on insects birds. With this study, we aimed to increase range taxa...
The nitrogen content of plant tissue is an essential factor for the growth and survival many wild phytophagous vertebrates. We tried to analyse trophic choices wood mouse (Apodemus sylvaticus) in relation various organs a heathland, common ecosystem Brittany. Patterns resources utilisation observed this show that rodent species always selects concentrated resources, namely energy- or nitrogen-rich tissues. In other respects, ingestion animal prey quantities varying according availability...