A5060011385- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Hydrology and Sediment Transport Processes
- Aquatic Invertebrate Ecology and Behavior
- Fish Biology and Ecology Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Ecology and biodiversity studies
- Isotope Analysis in Ecology
- Fish biology, ecology, and behavior
- Soil erosion and sediment transport
- Environmental DNA in Biodiversity Studies
- Hydrology and Watershed Management Studies
- French Urban and Social Studies
- Wildlife Ecology and Conservation
- Environmental Science and Water Management
- Marine and fisheries research
- Water management and technologies
- Species Distribution and Climate Change
- Integrated Water Resources Management
- Identification and Quantification in Food
- Wildlife-Road Interactions and Conservation
- Environmental Policies and Emissions
- Geological formations and processes
- Genetic diversity and population structure
- Environmental Conservation and Management
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2025
Université Paris-Saclay
2020-2025
Institut dal Dicziunari Rumantsch Grischun
2012-2016
Archéologies et Sciences de l’Antiquité
2013
Génétique Animale et Biologie Intégrative
2009
Institut Agro Rennes-Angers
2009
Agence de l'Eau Seine Normandie
2002
Conseil Régional de Bourgogne
1999
Stress Environnementaux et Biosurveillance des Milieux Aquatiques
1998
Eau de Paris (France)
1994-1997
ABSTRACT Landscape perspectives in riverine ecology have been undertaken increasingly the last 30 years, leading aquatic ecologists to develop a diverse set of approaches for conceptualizing, mapping and understanding ‘riverscapes’. Spatiotemporally explicit rivers their biota nested within socio‐ecological landscape now provide guiding principles inland fisheries watershed management. During two decades, scientific literature on riverscapes has increased rapidly, indicating that term...
The hypothesis of convergence takes the deterministic view that community (or assemblage) structure can be predicted from environment, and environment is expected to drive evolution in a predictable direction. Here we present results comparative study freshwater fish assemblages headwater streams four continents (Europe, North America, Africa South America), with general objective testing whether these display convergent structures under comparable environmental conditions (i.e. assemblage...
While it is recognized that biodiversity currently declines at a global scale, we still have an incomplete understanding of local trends under change. To address this deficiency, examined the recent decadal in water quality and (taxonomic functional) key river organisms (diatoms, macroinvertebrates fish) France. We implemented regression, RLQ fourth-corner analyses. Our results showed nutrient loads tended to decrease, diatom richness decline macoinvertebrate increase. The recovery sensitive...
RATIONALE Dorsal white muscle is the standard tissue analysed in fish trophic studies using stable isotope analyses. However, sampling often implies sacrifice of fish. Thus, we examined whether non‐lethal fin can substitute food web studies. METHODS Analysing and δ 15 N 13 C values 466 European freshwater (14 species) with an elemental analyser coupled ratio mass spectrometer, compared two tissues. Correlations between ratios were for all together specifically 12 species. We further proposed...
Diadromous fishes have drastically declined over the last century, especially in Europe. Several authors highlighted role of large dams this decline, but fact, its causes are potentially multiple and cumulative, including degradation local environmental conditions widespread fragmentation hydrographic networks associated with pervasive establishment smaller barriers. Consequently, there is a need to improve identification prioritization drivers diadromous species loss order identify apply...
The ongoing biodiversity crisis is especially severe in freshwater habitats. Anthropized watersheds, such as the Seine-Normandie basin France, are particularly affected by human interference. study of fish species distribution watersheds often relies on environmental drivers land use or climate. Yet, also exposed to river connectivity constraints, dams, that understudied despite their potential impact dispersal. For this study, we investigated role local and whole-basin longitudinal...
The restoration of previously extinct salmon populations is usually achieved with stocking programmes, but natural recolonization can also occur through the straying individuals from nearby populations. Here we investigated origin Atlantic ( Salmo salar ) that recently recolonized Seine River (France). degradation this river had led to extinction population, since 1990s, water quality has greatly improved. Although no was performed, 162 individual were observed by video-counting. Seven fish...
Aim To estimate population extinction rates within freshwater fish communities since the fragmentation of palaeo-rivers due to sea level rise at end Pleistocene; combine this information with estimated by other approaches (population surveys, fossil records); and build an empirical extinction–area relationship. Location Temperate rivers from Northern Hemisphere, a special focus on discharging into English Channel, in north-western France. Methods (1) French rivers. We used faunal relaxation...
Abstract Aim The interaction of land use with local versus regional processes driving biological homogenization (β‐diversity loss) is poorly understood. We explored: (a) stream β‐diversity responses to cover (forest agriculture) in terms physicochemistry and physicochemical heterogeneity; (b) whether these were constrained by the species pool, i.e. γ‐diversity, or assembly through (α) diversity; (c) operated abundance distribution (SAD) intraspecific spatial aggregation; (d) dependence on...
To understand the long-term fate of fish assemblages in context global change and to design efficient restoration measures river management, it is essential consider historical component these ecosystems. The human-impacted Seine River Basin a relevant case that has experienced extinction diadromous fishes over last two centuries recently witnessed recolonization some species. One key issue evolution habitat accessibility for migratory Thanks unique availability historical, mainly...
Summary The life histories of freshwater fish are widely studied because they represent fundamental determinants population performances. However, a gap remains in our understanding how species traits may predispose to extinction changing environment. In this study, based on large data set provided by the French National Agency for Water and Aquatic Environment (325 sites), we analysed factors that explain probability local 40 across rivers. A total five characterised demography species,...
Abstract Compared with small rivers and streams, the study of fish communities in large remains challenging as spatial temporal data variability can be greatly influenced by sampling strategy operator choice. In an attempt to limit this variability, a new protocol for medium‐ large‐sized was developed, based on point electric fishing using standardised procedures effort. Here, change quality (assemblage abundance, richness, structure biotic index) increasing effort (from 1 100 points)...
L'hydromophologie est, depuis ces dernières années, au centre des préoccupations gestionnaires en charge de la mise œuvre Directive Cadre européenne sur l'Eau (DCE). En France, différents outils suivis et d'analyses hydromorphologiques sont cours développement. L'outil CARHYCE caractérisation hydromorphologique d'eau, présenté ici, propose solutions pour quantification l'altération d'eau définition opérations restauration. Cet outil repose un protocole terrain standardisé d'application grand...
Abstract In the past, diadromous fish fauna of river Seine comprised 11 native species. From second part 19th century, progressive modification for navigation purposes and increase domestic industrial pollution led to a general decline migratory stocks extinction several Among them, allis shad ( Alosa alosa ) was previously widespread in basin, but disappeared at beginning 20th century. July 2004, individuals were observed upstream Paris (410 km from sea), one them identified as an that had...
BackgroundPredicting which species are likely to go extinct is perhaps one of the most fundamental yet challenging tasks for conservation biologists. This particularly relevant freshwater ecosystems tend have highest proportion threatened with extinction. According metapopulation theories, local extinction and colonization rates subpopulations can depend on degree regional occupancy, notably due rescue effects. However, relationships between extinction, colonization, occupancy spatial scales...