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Registros recuperados: 3
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Effect of nursery habitat degradation on flatfish population: Application to Solea solea in the Eastern Channel (Western Europe) ArchiMer
Rochette, S.; Rivot, Etienne; Morin, Jocelyne; Mackinson, S.; Riou, Philippe; Le Pape, Olivier.
Estuaries and coastal waters are essential nursery habitats for many marine species, and especially for flatfishes. Thus, investigating how anthropogenic disturbances affect the quality of these habitats is of major importance to understand their consequences on the population renewal of marine species. The aim of the present study was to analyse the effects of estuarine habitat degradation on the population of the common sole in the Eastern Channel, a key species in the fish community and fisheries in this area. We especially focused on the drastic drop in the surface area and on the low water quality of the Seine estuary, the main river of the Eastern Channel. A geographic Information System (GIS) was used to develop quantitative maps of sole nursery...
Tipo: Text Palavras-chave: Solea solea; Nursery; Habitat Mapping; Anthropogenic Disturbance; Seine Estuary; Recruitment.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00008/11921/9799.pdf
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Flux sédimentaire en estuaire de Seine : quantification et variabilité multi-échelle sur la base de mesure de turbidité (réseau SYNAPSES) ArchiMer
Druine, Flavie.
The dynamics of Suspended Particulate Matter (SPM) in macrotidal estuaries is highly variable both spatially (from the fluvial compartment to the estuary mouth) and temporally (from the second to several years), but it is essential to understand and quantify the sedimentary dynamics of estuarine environments. With the development of high-frequency measurement networks around the world, the main objective of this study is to qualify the turbidity measurements acquired by a high-frequency measurement network (SYNAPSES network) located on the Seine estuary (i) in terms of monitoring the SPM dynamics from the fluvial compartment to the turbidity maximal zone (TMZ) and (ii) in terms of estimation of the SPM fluxes on different spatio-temporal scales of the...
Tipo: Text Palavras-chave: Matière en suspension; Flux de matière en suspension; Réseau de mesures haute-fréquence; Capteurs optiques et acoustiques; Représentativité; Estuaire macrotidal; Estuaire de la Seine; Macrotidal estuary; Seine Estuary; Optical and acoustic sensors; Representativeness; High frequency measurement network; Suspended particulate matter; SPM fluxes.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00498/60966/64374.pdf
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The effect of wave-induced turbulence on intertidal mudflats: Impact of boat traffic and wind ArchiMer
Verney, Romaric; Deloffre, J; Brun Cottan, J.-c.; Lafite, R.
Semi-diurnal and fortnightly surveys were carried out to quantify the effects of wind- and navigation-induced high-energy events on bed sediments above intertidal mudflats. The mudflats are located in the upper fluvial part (Oissel mudflat) and at the mouth (Vasiere Nord mudflat) of the macrotidal Seine estuary. Instantaneous flow velocities and mudflat bed elevation were measured at a high frequency and high resolution with an acoustic doppler velocimeter (ADV) and an ALTUS altimeter, respectively. Suspended particulate matter concentrations were estimated by calibrating the ADV acoustic backscattered intensity with bed sediments collected at the study sites. Turbulent bed shear stress values were estimated by the turbulent kinetic energy method, using...
Tipo: Text Palavras-chave: Seine Estuary; Intertidal mudflat; Bed erosion; Bed roughness length; Bottom shear stress; Boat waves; Wind waves.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2552.pdf
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