Consulta: creatorFacets:"Feunteun, Eric"
Registros recuperados: 8
Data/hora: 11/06/2024 06:21:23

Poor oxic conditions in a large estuary reduce connectivity from marine to freshwater habitats of a diadromous fish
Provedor de dados: 5
Autores: Tetard, Stephane; Feunteun, Eric; Bultel, Elise; Gadais, Romain; Begout, Marie-laure; Trancart, Thomas; Lasne, Emilien.
Connectivity in aquatic systems is often related to abundance and permeability of physical barriers, such as dams, which delay or impede movements of biota with important consequences for aquatic biodiversity. Water quality may, however, also control connectivity between essential habitats. In macrotidal estuaries, Estuarine Turbidity Maxima (ETM) have a strong impact on water quality because of the low oxygen concentration occurring as a response to the related high bacterial and low photosynthetic activities. In this study, we assess Allis shad estuarine spawning migration in 2011 and 2012 in the Loire River (France) where the ETM occurs at spring and summer. Using an acoustic telemetry array, we show that trans-estuarine migration is inhibited during...
Tipo: Text
Palavras-chave: Connectivity; Hypoxic conditions; Acoustic telemetry; Estuarine migration; Allis shad.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00301/41212/40365.pdf

Dynamics of particulate organic matter composition in coastal systems: a spatio-temporal study at multi-systems scale
Provedor de dados: 5
Autores: Lienart, Camilla; Savoye, Nicolas; Bozec, Yann; Breton, Elsa; Conan, Pascal; David, Valerie; Feunteun, Eric; Grangere, Karine; Kerherve, Philippe; Lebreton, Benoit; Lefebvre, Sebastien; L'Helguen, Stephane; Mousseau, Laure; Raimbault, Patrick; Richard, Pierre; Riera, Pascal; Sauriau, Pierre-guy; Schaal, Gauthier; Aubert, Fabien; Aubin, Sebastien; Bichon, Sabrina; Boinet, Christophe; Bourasseau, Line; Breret, Martine; Caparros, Jocelyne; Cariou, Thierry; Charlier, Karine; Claquin, Pascal; Cornille, Vincent; Corre, Anne-marie; Costes, Laurence; Crispi, Olivier; Crouvoisier, Muriel; Czamanski, Marie; Del Amo, Yolanda; Derriennic, Herve; Dindinaud, Francois; Durozieri, Maia; Hanquiez, Vincent; Nowaczyk, Antoine; Devesa, Jeremy; Ferreira, Sophie; Fornier, Michel; Garcia, Fabrice; Garcia, Nicole; Geslin, Sandrine; Grossteffan, Emilie; Gueux, Aurore; Guillaudeau, Julien; Guillou, Gael; Joly, Orianne; Lachaussee, Nicolas; Lafont, Michel; Lamoureux, Jezabel; Lecuyer, Eric; Lehodey, Jean-paul; Lemeille, David; Leroux, Cedric; Mace, Eric; Maria, Eric; Pineau, Philippe; Petit, Franck; Pujo-pay, Mireille; Rimelin-maury, Peggy; Sultan, Emmanuelle.
In coastal systems, the multiplicity of sources fueling the pool of particulate organic matter (POM) leads to divergent estimations of POM composition. Eleven systems (two littoral systems, eight embayments and semi-enclosed systems and one estuary) distributed along the three maritime façades of France were studied for two to eight years in order to quantify the relative contribution of organic matter sources to the surface-water POM pool in coastal systems. This study was based on carbon and nitrogen elemental and isotopic ratios, used for running mixing models.  The POM of the estuary is dominated by terrestrial material (93% on average), whereas the POM of the other systems is dominated by phytoplankton (84% on average). Nevertheless, for the latter...
Tipo: Text
Palavras-chave: Particulate organic matter; Coastal systems; C and N stable isotopes; C:N ratio; Mixing model.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00374/48550/48871.pdf

Swinging boat moorings: Spatial heterogeneous damage to eelgrass beds in a tidal ecosystem
Provedor de dados: 5
Autores: Ouisse, Vincent; Marchand-jouravleff, Irina; Fiandrino, Annie; Feunteun, Eric; Ysnel, Frederic.
Seagrass meadows are currently known to be subjected to huge physical disturbances including boat moorings in shallow bays. We aimed to identify the impact of permanent swing mooring on the fast-growing seagrass Zostera marina in a mega-tidal area. Coupling the hydrodynamic MARS3D model to simulate mooring chain movements and in situ measurements of plant traits, we analyzed the structural responses of the eelgrass bed to scraping disturbance in the western English Channel (France). A comparison of the results with a reference site without any permanent swing boat mooring showed a significant impact on eelgrass structure (shoot density, leaf size, leaf dry weight), depending on the direction and distance from the mooring. Zostera marina was absent close to...
Tipo: Text
Palavras-chave: Boat mooring; Zostera marina; Seagrass ecology; Anthropogenic disturbances; SCUBA-Diving; Modeling approach.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00599/71151/69553.pdf

Modeling marine shad distribution using data from French bycatch fishery surveys
Provedor de dados: 5
Autores: Trancart, T.; Rochette, Sebastien; Acou, Anthony; Lasne, E.; Feunteun, Eric.
In the last few decades, there has been a marked decline in the number of shad (Alosa alosa and A. fallax) landed in France, which prompted the French committee of the International Union for Conservation of Nature to list shad as a ‘Vulnerable’ species in 2010. The freshwater phases of shad life cycles have been extensively studied, but the marine phases remain poorly understood. The present study aimed to provide new insights into shad ecology by describing the marine distributions of twaite and allis shad using a presence/absence model based on bycatch data from commercial fishery surveys. Depth and salinity were identified as the main factors influencing shad distribution. Both species were primarily located in shallow areas, at depths of between 0 and...
Tipo: Text
Palavras-chave: Alosa alosa; Alosa fallax; Distribution; Migration; Binomial model.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00213/32397/30863.pdf

Liste des espèces marines introduites dans les eaux bretonnes et des espèces introduites envahissantes des eaux périphériques
Provedor de dados: 5
Autores: Blanchard, Michel; Goulletquer, Philippe; Hamon, Dominique; Le Mao, Patrick; Nezan, Elizabeth; Gentil, Franck; Simon, Nathalie; Viard, Frédérique; Ar Gall, Erwan; Grall, Jacques; Hily, Christian; Le Duff, Michel; Stiger-pouvreau, Valérie; Acou, Anthony; Derrien-courtel, Sandrine; Feunteun, Eric; D'Hondt, Jean-loup; Canard, Alain; Ysnel, Frédéric; Perrin, Bertrand.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00026/13737/10865.pdf

Eel community structure, fluvial recruitment of Anguilla marmorata and indication for a weak local production of spawners from rivers of Reunion and Mauritius islands
Provedor de dados: 5
Autores: Robinet, Tony; Feunteun, Eric; Keith, Philippe; Marquet, Gérard; Olivier, Jean-michel; Reveillac, Elodie; Valade, Pierre.
Anguillid eels were sampled from permanent rivers in the Reunion and Mauritius islands, western Indian Ocean, with a standardized electrofishing method. A. marmorata was very dominant, corresponding to 91.7 and 90.7% of all the eels collected in Reunion and Mauritius, respectively. Three other species (A. mossambica, A. bicolor bicolor and A. nebulosa labiata) were also present in both islands. A. marmorata showed a strong altitudinal gradient of densities from the lower to upper zones, especially in the younger stages (TL &lt; 250 mm), while A. mossambica was only found in the upper zones and A. bicolor bicolor occurred only in the lower zones (A. nebulosa labiata was rare). The eel species composition in freshwaters of both islands is very similar...
Tipo: Text
Palavras-chave: Conservation; Reproductive turnover; Fluvial recruitment; Indian Ocean; Tropical eels.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2270.pdf

Freshwater protected areas: an effective measure to reconcile conservation and exploitation of the threatened European eels (Anguilla anguilla)?
Provedor de dados: 5
Autores: Cucherousset, J; Paillisson, J; Carpentier, A; Thoby, V; Damien, J; Eybert, M; Feunteun, Eric; Robinet, T.
For decades, the European eel Anguilla anguilla (L.) population has been declining strongly despite several management attempts, so additional experiments need to be conducted on management measures. The use of freshwater protected areas has been advocated but their efficiency has never been assessed. In this study, we investigated whether the population structure and the silver eel (mature migrating stage) production differ in fished and protected areas within a marsh wetland (Briere, 7000 ha, Northwest France), using an intensive biological study (electrofishing and trapping) and a survey of the traditional fishery (licenses, questionnaires and creel surveys). First, we found that fishermen mainly targeted &gt; 320-mm yellow eels (sedentary stage) using...
Tipo: Text
Palavras-chave: Coastal freshwater marsh; Habitat restoration; Protected area; Spawners production; Anguilla anguilla.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3522.pdf

Dynamics of particulate organic matter composition in coastal systems: forcing of spatio-temporal variability at multi-systems scale
Provedor de dados: 5
Autores: Lienart, Camilla; Savoye, Nicolas; David, Valerie; Ramond, Pierre; Tress, Paco Rodriguez; Hanquiez, Vincent; Marieu, Vincent; Aubert, Fabien; Aubin, Sebastien; Bichon, Sabrina; Boinet, Christophe; Bourasseau, Line; Bozec, Yann; Breret, Martine; Breton, Elsa; Caparros, Jocelyne; Cariou, Thierry; Claquin, Pascal; Conan, Pascal; Corre, Anne-marie; Costes, Laurence; Crouvoisier, Muriel; Del Amo, Yolanda; Derriennic, Herve; Dindinaud, Francois; Duran, Robert; Durozier, Maia; Devesa, Jeremy; Ferreira, Sophie; Feunteun, Eric; Garcia, Nicole; Geslin, Sandrine; Grossteffan, Emilie; Gueux, Aurore; Guillaudeau, Julien; Guillou, Gael; Jolly, Orianne; Lachaussee, Nicolas; Lafont, Michel; Lagadec, Veronique; Lamoureux, Jezabel; Lauga, Beatrice; Lebreton, Benoit; Lecuyer, Eric; Lehodey, Jean-paul; Leroux, Cedric; L'Helguen, Stephane; Mace, Eric; Maria, Eric; Mousseau, Laure; Nowaczyk, Antoine; Pineau, Philippe; Petit, Franck; Pujo-pay, Mireille; Raimbault, Patrick; Rimmelin-maury, Peggy; Rouaud, Vanessa; Sauriau, Pierre-guy; Sultan, Emmanuelle; Susperregui, Nicolas.
In costal systems, particulate organic matter (POM) results from a multiplicity of sources having their respective dynamics in terms of production, decomposition, transport and burial. The POM pool experiences thus considerable spatial and temporal variability. In order to better understand this variability, the present study employs statistical multivariate analyses to investigate links between POM composition and environmental forcings for a panel of twelve coastal systems distributed along the three maritime regions of France and monitored weekly to monthly for 1 to 8 years. At multi-system scale, two main gradients of POC composition have been identified: a ‘Continent-Ocean’ gradient associated with hydrodynamics, sedimentary dynamics and depth of the...
Tipo: Text
Palavras-chave: Particulate organic matter; Coastal systems; Environmental forcing; Meta-analysis; France.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00433/54471/55848.pdf