A5007820262- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Biological Control of Invasive Species
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Mediterranean and Iberian flora and fauna
- Lichen and fungal ecology
- Aquatic Invertebrate Ecology and Behavior
- French Urban and Social Studies
- Bryophyte Studies and Records
- Plant and animal studies
- Diatoms and Algae Research
- Agriculture and Rural Development Research
- Water Quality and Pollution Assessment
- Peatlands and Wetlands Ecology
- Fish Ecology and Management Studies
- African Botany and Ecology Studies
- Biocrusts and Microbial Ecology
- Plant responses to water stress
- Allelopathy and phytotoxic interactions
- Plant Stress Responses and Tolerance
- Ecology and Conservation Studies
- Species Distribution and Climate Change
Ecosystèmes, Biodiversité, Evolution
2015-2024
Université de Rennes
2014-2024
Centre National de la Recherche Scientifique
2012-2024
University of the Witwatersrand
2023
Géosciences Rennes
2020
Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux
2006
Phytocos (France)
2006
University of Lisbon
2002
With the advent of Anthropocene, biological invasions have reached an unprecedented level, and number species introductions is still increasing in ever‐changing world. Despite major advances invasion science, significant debate lack clarity remain surrounding determinants success introduced species, magnitude dimensions their impact, mechanisms sustaining successful invasions. Empirical studies show divergent impacts alien populations on ecosystems contrasting effects biotic abiotic factors...
ABSTRACT Aquatic ecosystems are currently invaded by non‐indigenous aquatic plants. A major challenge for biological invasion research is to develop the ability predict spread of species. Throughout world, Ludwigia peploides subsp. montevidensis and grandiflora hexapetala now considered be two most invasive This paper reviews scientific knowledge about these species, their ecological socio‐economic impacts methods management. Water primrose possesses some advantageous traits, such as rapid...
Summary 1. Recent studies have demonstrated that there is generally no unambiguous relationship between plant species composition and specific environmental conditions in rivers. Nevertheless, indices of pressures based on macrophytes are flourishing, because the requirements Water Framework Directive (WFD). 2. We first reviewed nine such against 13 criteria for bioindicators. Then, using data from France England, we tested whether IBMR (Macrophyte Biological Index Rivers) LEAFPACS...
Allelopathy is defined as the effects (stimulatory and inhibitory) of a plant on development neighboring plants through release secondary compounds. Autoallelophaty beneficial or harmful effect species itself. The allelopathic potential belonging to native could induce biotic resistance against invasive plants, whereas allelochemicals released by exotic favor establishment (invasional meltdown). aim our study was examine four target Ludwigia hexapetala using two experiments. In first...
Les marais littoraux argileux de l’estuaire la Charente, zones transition entre terre et eau, abritent une riche biodiversité patrimoniale mais sont également colonisés par des espèces invasives comme jussie rampante (Ludwigia peploides). Cette plante modifie le fonctionnement hydraulique canaux, perturbe les écosystèmes impacte activités l’agriculture. Des programmes régulation coûteux mis en place, associant opérations curage arrachage manuel plante. Dans d’autres tourbeux façade...
Mass developments of macrophytes occur frequently worldwide and are often considered a nuisance when interfering with human activities. It is crucial to understand the drivers this perception if we develop effective management strategies for ecosystems macrophyte mass developments. Using comprehensive survey spanning five sites different species in four countries (Norway, France, Germany South Africa), quantified growth as among residents visitors, recreational activities (swimming, boating,...
Abstract Invasive plant species such as Ludwigia hexapetala might have a competitive advantage if they produce allelopathically active compounds against primary producers. Both phytoplankton and community structure may be affected due to different, species‐specific sensitivity allelochemicals. Moreover, allelopathic interactions could vary over the year depending on (i) plant's phenological stage (ii) abilities of native macrophytes suppress—or non‐native stimulate—the macrophyte population....
The release of allelochemicals by plants can affect the performance other organisms positively or negatively. We tested effects aqueous extracts and leachates derived from leaves roots invasive water primrose (Ludwigia hexapetala) on one submerged native species – Ceratophyllum demersum, two exotic Egeria densa emergent growth form Myriophyllum aquaticum. effect Ludwigia hexapetala photosynthetic yield, (i.e. relative rate, leaf area), root length, length lateral shoots each were analysed in...
Biological invasions have reached an unprecedented level and the number of introduced species is still increasing worldwide. Despite major advances in invasion science, determinants success species, magnitude dimensions their impact, mechanisms sustaining successful are debated. Empirical studies show divergent impacts non-native populations on ecosystems contrasting effects biotic abiotic factors dynamics populations; this hindering emergence a unified theory biological invasions. We...
Summary 1. The application of functional ecology models to aquatic plants often relies on morphological and life‐history traits which may reflect, in part, the phenotypic plasticity displayed by plants. present study was designed evaluate use physiological traits, such as nutrition patterns, describe plant strategies along a gradient increasing resource availablity. 2. Taking phosphorus (P) an example, nutrition‐use efficiencies were evaluated five species, through P‐content tissues,...