A5027141034- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Underwater Acoustics Research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine animal studies overview
- Fish biology, ecology, and behavior
- Aquatic Ecosystems and Biodiversity
- Aquatic Invertebrate Ecology and Behavior
- Marine and coastal ecosystems
- Identification and Quantification in Food
- Ecology and biodiversity studies
- Hydrology and Sediment Transport Processes
- Isotope Analysis in Ecology
- French Urban and Social Studies
- Water Quality Monitoring Technologies
- Freshwater macroinvertebrate diversity and ecology
- Environmental DNA in Biodiversity Studies
- Agriculture and Rural Development Research
- Coral and Marine Ecosystems Studies
- Hydrology and Watershed Management Studies
- Physiological and biochemical adaptations
- Marine and environmental studies
- Aquaculture Nutrition and Growth
- Ichthyology and Marine Biology
Université Savoie Mont Blanc
2016-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2017-2025
Centre Alpin sur les Réseaux Trophiques et Ecosystèmes Lacustre
2015-2024
Centre de Recherche sur l'Environnement Alpin
2009-2023
Université de Sherbrooke
2023
Brides-les-Bains
2021
Institut des Sciences de la Terre
2020
Centre National de la Recherche Scientifique
2020
Université Grenoble Alpes
2020
Université Gustave Eiffel
2020
Large lakes of the world are habitats for diverse species, including endemic taxa, and valuable resources that provide humanity with many ecosystem services. They also sentinels global local change, recent studies in limnology paleolimnology have demonstrated disturbing evidence their collective degradation terms depletion (water food), rapid warming loss ice, destruction ecosystems, accelerating pollution. particularly exposed to anthropogenic climatic stressors. The Second Warning Humanity...
Lakes are essential ecosystems that provide a large number of ecosystem services whose quality is strongly impacted by human pressures. Optimal uses lakes require adapted management practices which in turn rely on physico-chemical and biological monitoring. Long-term ecological monitoring provides sets environmental data. When such data available, they have to be associated metadata stored properly accessible useable the scientific community. We present informatics system anyone who requests...
Abstract. Long-term effects of climate change on lakes globally will include a substantial modification in the thermal regime and oxygen solubility lakes, resulting alteration ecosystem processes, habitats, concentrations critical substances. Recent efforts have led to development long-term model projections lake regimes solubility. However, such are hardly ever confronted with observations extending over multiple decades. Furthermore, global-scale forcing parameters models present several...
Summary 1. Sampling of lake fish assemblages is a challenging task in science, and the information obtained strongly depends on choice sampling gear. The use more than one technique generally preferred order to achieve comprehensive view assemblage structure. Therefore, knowledge whether catches between fishing gears are comparable crucial. 2. We compared benthic multi‐mesh gillnets with biomass estimates by vertical hydroacoustics 18 European lakes varying morphometry trophic status....
Abstract Environmental sciences depend heavily on observational data. Successful studies of ecological processes in lakes require in‐situ data that cover the relevant temporal scales from milliseconds to entire seasons. Temporal and spatial coverage requirements represent a non‐trivial challenge lake sciences, which have traditionally used sampling campaigns conducted research vessels or anchored moorings. These come with various logistical tasks impose constraints coverage. An open water...
Sediment trapping within reservoirs is a worldwide phenomenon which impairs the ecological functioning of upstream and downstream ecosystems. It also reduces reservoir water storage volume, lessens services dams provide such as hydropower production or flood control questions their sustainability. Hydraulic flushing widely used operation to recover but impacts are massive. Recently, environmental awareness led dam operators modify management practices: 'Controlled Flushing Operations'...
Alterations in the acoustic environment owing to anthropogenic sound are recognised as global pollution and strengthening studies freshwater. This study focuses on impact of lake seismic surveys fish. First, we measured individual stress responses, i.e. cortisol levels oxidative stress, morphological parameters, stomach contents juvenile roaches (Rutilus rutilus) captured by trawling prior during survey. Second, using hydroacoustics, analysed fish school behaviour before, during, after...
Abstract Hydroacoustic methods are routinely used for fish population assessment and monitoring in lakes reservoirs around the world particularly embedded European North American lake management. However, comparability of hydroacoustic results can be difficult to assess due large number variables (sound frequency, sound pulse duration, system manufacturer, analysis method, etc.) that influence acoustic estimates. This study investigates effect variations method on commonly produced outputs....
Abstract As the global climate warms, fate of lacustrine fish is huge concern, especially given their sensitivity as ectotherms to changes in water temperature. The Arctic charr ( Salvelinus alpinus L.) a salmonid with Holarctic distribution, peripheral populations persisting at temperate latitudes, where it found only sufficiently cold, deep lakes. Thus, warmer temperatures these habitats particularly during early life stages could have catastrophic consequences on population dynamics....
Synchronic variations in abundance populations of the same species are common phenomena encountered various environments, including lakes, and different taxa freshwater fishes. This phenomenon can be caused by similar environmental conditions across physically separated populations. In context ongoing climate change, it is essential to test this hypothesis, identify factors driving synchrony elucidate mechanisms, attempt improve fisheries management. study investigates synchronic European...
Abstract Successive hydroacoustic surveys were conducted on a small lake in the Jura Mountains (eastern France) to test several sampling strategies and methods of calculation. The results show that night samples give better picture fish populations than daytime ones; parallel transect are ones easiest conduct, that, all survey designs tested, gave statistically equivalent biomass estimations size distributions. obtained also similar for statistical calculation used. Repeated samplings...
Water Framework Directive requires reliable and effective monitoring tools, hydroacoustics has a potential to be one of them. The effect pulse duration on in situ acoustical estimates fish density their size distribution was investigated. Measurements were performed the oligo-mesotrophic Lake Hancza (Poland) using SIMRAD EK60 split-beam echo-sounder at 70 kHz frequency. During survey, two similar transducers pinged alternatively through multiplexer 4 different lengths, from short long ones....
Abstract Hydroacoustics has become a requisite method to assess fish populations and allows describe the relationships of with other elements aquatic ecosystem. This nonintrusive is currently an integral part sampling procedures recommended for stock assessment by Water Framework Directive been standardized European Committee Standardization [CEN (2014) CSN EN 15910 ‐ quality Guidance on estimation abundance mobile hydroacoustic methods, Category: 7577 quality. Biological.]. In Europe,...
Summary We sampled L ake B ourget (surface area = 44 km 2 ) using CEN standard gillnet and provisional acoustic survey methods over 3 years (2005, 2010 2011) as the fish community responded to re‐oligotrophication. A total of 16 species were caught in benthic gillnets three pelagic gillnets. Lake Bourget results consistent with a recent study (Emmrich et al ., Freshwater Biology, 57 , 2012, 2436) showing strong correspondence between average biomass‐per‐unit‐effort ( BPUE volume...
Acoustic cameras are increasingly used in monitoring studies of diadromous fish populations, even though analyzing them is time-consuming. In complex situ contexts, anguilliform may be especially difficult to identify automatically using acoustic camera data because the undulation their body frequently results fragmented targets. Our study aimed develop a method based on succession computer vision techniques, order detect, and count from multiple models cameras. Indeed, several cameras,...
Spatial distribution of macrozooplankton was studied during spring in Lake Geneva to evaluate the influence abiotic (water temperature and stability, nutrients) biotic (bacteria, chlorophyll a, fish biomass) factors on distribution. Mapping spatial analyses revealed that factors, as well crustacean abundances, were structured along a gradient great lake basin. Chlorophyll biomass, bacteria density, cyclopoid abundance, biomass showed more patchy or inshore-offshore patterns. Using canonical...