Дисертації з теми "Pêche – France – Rhône (cours d'eau)"
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Chabenat, Gérard. "Parcours d'un fleuve : le Rhône la mémoire a l'épreuve de l'aménagement, ou comment se construit une culture fluviale." Lyon 2, 1995. http://www.theses.fr/1995LYO20005.
Повний текст джерелаThe Rhône : a means to consider the world today. Local populations make us understand their own space, which creates a territory, legitimate boundaries which are those of local culture and which represent, now and again "another outline" compared to those officially recognised. They make us understand the passing of time, symbolised by the flowing river, telling their "native" stories. Social and cultural identities find their meaning in a historical inscription. Despite historical differences, from one bank to the other there can be a creation of solidarity, either through an exterior danger or a crisis (floods, the creation of a nature reserve). Such solidarity is not without certains tensions ; we do not become "brothers" with impunity, as here we have a same desir : to identify ourselves within the same boundary. How to create a territory, or rather how to become part of it, even when the boundaries are altered by man. This question is traversed by the idea of modernity. With our changing world, the economical, social, and cultural functions of the river, are not longer the same. The era of national or even international projets have taken the place of the "micro economy". Whole areas are arranged so as to be highly lucrative, or to enable leisure, sometimes they become landscapes for the largest number of people possible. In fact these spaces are everything except a territory
Creuzé, des Châtelliers Michel. "Dynamique de répartition des biocénoses interstitielles du Rhône en relation avec des caractéristiques géomorphologiques (secteurs de Brégnier-Cordon, Miribel-Jonage et Donzère-Mondragon)." Lyon 1, 1991. http://www.theses.fr/1991LYO10033.
Повний текст джерелаElger, Arnaud. "Herbivorie et stratégies adaptatives des végétaux : étude expérimentale de la palatabilité des macrophytes aquatiques des zones humides fluviales." Lyon 1, 2002. http://www.theses.fr/2002LYO10144.
Повний текст джерелаBerly, Alain. "Distribution spatio-temporelle des peuplements macrobenthiques prélevés par dragage dans une station du haut-Rhône." Lyon 1, 1989. http://www.theses.fr/1989LYO10158.
Повний текст джерелаLamouroux, Nicolas. "Hydraulique statistique et prédiction de caractéristiques du peuplement piscicole : modèles pour l'écosystème fluvial." Lyon 1, 1997. http://www.theses.fr/1997LYO10198.
Повний текст джерелаFruget, Jean-François. "L'aménagement du bas-Rhône : évolution du fleuve et influence sur les peuplements de macroinvertébrés benthiques." Lyon 1, 1989. http://www.theses.fr/1989LYO10206.
Повний текст джерелаAllouche, Stéphanie. "Stratégies d'utilisation de l'habitat par les poissons d'eau courante : rôle du couvert : étude par radiopistage & en rivière expérimentale." Lyon 1, 2001. http://www.theses.fr/2001LYO10103.
Повний текст джерелаPouilly, Marc. "Relations entre l'habitat physique et les poissons des zones à cyprinidés rhéophiles dans trois cours d'eau du bassin rhodanien : vers une simulation de la capacité d'accueil pour les peuplements." Lyon 1, 1994. http://www.theses.fr/1994LYO10147.
Повний текст джерелаCogerino, Laurent. "Les rives aquatiques de grands cours d'eau : caractérisation mésologique et faunistique." Lyon 1, 1989. http://www.theses.fr/1989LYO10136.
Повний текст джерелаCellot, Bernard. "Dérive et flux du matériel organique, notamment des macroinvertébrés, dans une grande rivière européenne." Lyon 1, 1996. http://www.theses.fr/1996LYO10002.
Повний текст джерелаVéran, Marie-Pierre. "Etude des transferts de l'241 Am en eau douce : application à l'écosystème rhodanien." Aix-Marseille 1, 1998. http://www.theses.fr/1998AIX11083.
Повний текст джерелаPages, Jean-Christophe. "Modélisation, analyse et régulation des aménagements du Rhône par commande prédictive : gestion locale et centralisée du passage des crues." Lyon 1, 2000. http://www.theses.fr/2000LYO10057.
Повний текст джерелаLabonne, Jacques. "Contribution à la conservation de l'apron du Rhône (Zingel asper) : dynamique des populations, sélection de l'habitat et modélisation." Lyon 1, 2002. http://www.theses.fr/2002LYO10044.
Повний текст джерелаCopp, Gordon Howard. "Le rôle et le fonctionnement des milieux aquatiques du haut-Rhône français commes sites de reproduction et de nurserie pour les poissons du fleuve." Lyon 1, 1987. http://www.theses.fr/1987LYO10118.
Повний текст джерелаAntonelli, Christelle. "Flux sédimentaires et morphogénèse récente dans le chenal du Rhône aval." Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX10058.
Повний текст джерелаOlivier, Jean-Michel. "Rythmes de dérive des alevins en milieu fluvial : suivi dans le Rhône au niveau des prises d'eau et influence des vidanges de barrages." Lyon 1, 1992. http://www.theses.fr/1992LYO10220.
Повний текст джерелаCottet-Dumoulin, Laurence. "Le renouveau des rapports ville / fleuve, projet postmoderne ou nouveau fonctionnalisme ? : le cas du Rhône et de la Saône dans l'agglomération lyonnaise." Saint-Etienne, 2004. http://www.theses.fr/2004STET2083.
Повний текст джерелаDuring the 1980s, in France and in the developed countries, a new concern emerged about a new designation of rivers as urban and natural inheritance. The thesis inquires about these new ways of development of the rivers, presented through many projects of sustainability and totally opposed to the former patterns of development characterized by functionalism. The Lyon area, precursor on the matter, was chosen for the study. This study is organized into three parts. First, it gives an historical perspective of the river deskilling process in the Lyon area and shows the reference patterns. Then, it deals with the local process of reappropriation of the rivers. It is focused over the recent years, from 1978 to 2001, during which a river community policy was settled. It highlights three patterns of river development connected to the ideas of sustainability and to the construction of an urban strategy of internationalization of the city. A last part is devoted to a critical analysis about the breach of the river development pattern by interviewing the local associations and by analyzing what has been done to make the rivers territorial again
Jacquet-Labrot, Christine. "Evolution des anciens chenaux du Rhône et de l'Ain : écologie rétrospective basée sur les restes de cladocères." Lyon 1, 1986. http://www.theses.fr/1986LYO10091.
Повний текст джерелаBarthélémy, Carole. "Des rapports sociaux à la frontière des savoirs : les pratiques populaires de pêche amateur au défi de la gestion environnementale du Rhône." Aix-Marseille 1, 2003. http://www.theses.fr/2003AIX10058.
Повний текст джерелаGuillaud, Emilie. "Études archéo-ichtyofaunique des sites magdaléniens du Taillis des Coteaux et de La Piscine (Vallée de la Gartempe, Vienne) : taphonomie, biodiversité et techniques de pêche." Paris, Muséum national d'histoire naturelle, 2014. http://www.theses.fr/2014MNHN0021.
Повний текст джерелаThe exploitation of aquatic resources by Magdalenian populations in northern France is still largely unknown. This thesis addresses this gap through the study of ichthyofaunal remains from the caves of Le Taillis des Coteaux and La Piscine (Gartempe basin, Vienne). The identified remains consist mostly of salmonids (grayling, trout, salmon) and are represented almost exclusively by vertebral bones. The development of new methodologies, such as the application of morphometric analysis and sclerochronology, has allowed us to optimize the study of this type of material. We have developed a discriminating model using geometric morphometrics in order to distinguish between salmon and trout. The application of the knn method permits us to identify these species with 90% certainty. The application of sclerochronology to scales in the archaeological record allowed us to determine fishing season and to reconstruct the growth of the Magdalenian grayling. The results show that fishing was practiced during springtime and that the growth of the grayling during the Magdalenian period was similar to the growth of current Scandinavian populations. This thesis also addresses the determination of fish bone accumulators present in a karst landscape. The establishment of a taphonomic reference that characterizes the effect of otters on fish bones allowed us to determine its potential role in the accumulation of archaeological deposits. This set of methods contributes improved techniques for species identification and increased our knowledge of subsistence strategies during the Magdalenian as well as provided information about the evolution of fish populations in the Gartempe basin. Finally, this thesis illustrates how the application of these new methods for ichthyo-archaeological studies contribute to the understanding of prehistoric societies
Balocco-Castella, Chantal. "Les macrophytes aquatiques des milieux abandonnés par le Haut-Rhône et l'Ain : diagnostic phyto-écologique sur l'évolution et le fonctionnement de ces écosystèmes." Lyon 1, 1988. http://www.theses.fr/1988LYO10162.
Повний текст джерелаBerrahou, Ali. "Répartition longitudinale des macroinvertébrés benthiques du Rhône français et sa relation avec les principaux affluents." Lyon 1, 1993. http://www.theses.fr/1993LYO10178.
Повний текст джерелаRaccasi, Guillaume. "Mutations géomorphologiques récentes du Rhône aval : recherches en vue de la restauation hydraulique et de la gestion des crues." Aix-Marseille 1, 2008. https://tel.archives-ouvertes.fr/tel-00321723.
Повний текст джерелаRoucaute, Emeline. "Une histoire des zones palustres en milieu méditerranéen entre bas Rhône et basse Durance (XIVe siècle-début XIXe siècle)." Aix-Marseille 1, 2008. http://www.theses.fr/2008AIX10117.
Повний текст джерелаLandon, Norbert. "L'évolution contemporaine du profil en long des affluents du Rhône moyen : constat régional et analyse d'un hydrosystème complexe : la Drôme." Paris 4, 1999. http://www.theses.fr/1998PA040295.
Повний текст джерелаGaschignard-Fossati, Odile. "Répartition spatiale des macroinvertébrés benthiques d'un bras vif du Rhône : rôle des crues et dynamique saisonnière." Lyon 1, 1986. http://www.theses.fr/1986LYO19029.
Повний текст джерелаPiégay, Hervé. "Dynamiques et gestion de la ripisylve de cinq cours d'eau à charge grossière du bassin du Rhône (l'Ain, l'Ardèche, le Giffre, l'Ouvèze et l'Ubaye), XIXème-XXème siècles." Paris 4, 1995. http://www.theses.fr/1995PA040024.
Повний текст джерелаPoinsart, Danièle. "Effets des aménagements fluviaux sur les débits liquides et solides : l'exemple du Rhône dans les plaines de Miribel-Jonage et de Donzère-Mondragon." Lyon 3, 1992. http://www.theses.fr/1992LYO31003.
Повний текст джерелаThe regulation works of the rhone has began during the last century. The first method consisted by the longitudinal embankments. The second method used of transversal dykes due to the civil engineer girardon. The results have been remarkable. S nevertheless, with the 20th century, the requirements of the navigation are became most importants and the fluvial management is considered according to the hydroelectric production. The diversion of a part of running water modify the hydrology and the transit of bed-load. The mobility of gravels is highly variable according to the functionning of the dams and the ancient inheritages, but rhe geological frame plays also a role on the stability and the instability of the sites. Since the second part of the 20th century, the extraction of gravels have modified the adjustement of fluvial parameters. Today, the management of the fluvial space is too frequently funded on the old view of the sedimentary load of the rhone, when this river, as the other european streams, shown a high reduction of this gravel load
Bardin, Olivier. "Dynamique des peuplements piscicoles colonisant les milieux esturiens et lagunaires du delta du Rhône. Etude de deux cas : le domaine de la Palissade et le pertuis de la fourcade." Aix-Marseille 3, 2002. http://www.theses.fr/2002AIX30021.
Повний текст джерелаMigration is the main factor controlling the specific richness of fishes in estuaries and lagoons. This study has been focused on two sites in the Camargue (Rhone delta, France) : the "domaine de la Palissade", located in the estuarine zone of the Rhone River, and the "Pertuis de la Fourcade", a man-made and managed channel in the "Digue a la Mer". To begin with hydraulic functioning has been studied first. Furthermore, the different factors controlling fish migration between different habitats have been studied. These factors come into play : firstly on a seasonal scale, with the biological rhythms of different species and seasonal physical factors, and secondly on a more local scale. In this latter case, the factors are either limiting or favoring the displacements of fish. Finally, through the example of "La Fourcade", the problematic of water and salt management in the Camargue has been treated, from an interdisciplinary point of view between History, Sociology and Biology
Cossin, Mélanie. "Caractérisation paysagère de quelques cours d'eau de taille moyenne des bassins du Rhône et de la Loire : éléments méthodologiques pour une gestion durable des corridors fluviaux." Lyon 3, 2008. https://scd-resnum.univ-lyon3.fr/out/theses/2008_out_cossin_m.pdf.
Повний текст джерелаRivers are the last "naturals” ecosystems in anthropic countries and are in the same time, very appreciated for their natural caracteristics. In France, the water laws of 1992 and 2006 state a global river management, between uses and protection of natural environment. In the same time, landscape is increasingly considered in management and traduced in a specific law in 1993 and in the European Landcsape Convention in 2000. Landcape studies are requested increasingly by managers and planners although they appears infrequently in global studies of rivers. In this research, we propose a methodological approach to landscape diagnosis of fluvial hydrosystems. It is based on a quantified analysis capable of being approved by all the actors concerned and of being reproduced. The aim is to realise a landscape diagnosis to propose solutions of landscape management inclusing uses and actors opinions
Barreau, Christine. "Etude de la matiere organique associee aux suspensions fluviales : application a des fleuves de climats tempere et intertropical." Paris 6, 1992. http://www.theses.fr/1992PA066031.
Повний текст джерелаLopez, Charles. "Le transport fluvio-maritime, quelle pertinence socio-économique pour le bassin Rhône-Saône ?" Lyon 2, 2008. http://theses.univ-lyon2.fr/documents/lyon2/2008/lopez_c.
Повний текст джерелаSea-river shipping is a form of short-sea transport and an interesting multi-modal transport. Its concept is simple: one vessel sails both coastal and inland waters. Sea-river ships can connect the hinterland with overseas destinations without the need for an intermediate transhipment. As a result, transport costs are lowered and the risk of damage due to handling is reduced. Nevertheless, sea-river shipping has not been significantly developed in Europe (Rissoan, 1994, 1995). Substantial traffic volumes are only found on a very limited number of routes (e. G. Rhine; some Russian waterways). In France, it is restricted to a very limited number of waterways, such as the Seine or the Rhône-Saône basin. On the Rhône-Saône corridor, sea-river shipping can directly connect inland ports with Mediterranean seaports. Then, it offers “Rhône valley-Mediterranean” logistics. Rissoan (1987) tries, for different products, to define the competitive navigational area of sea-river shipping (including river and maritime trips). Konings and Ludema (2000) evaluate the opportunities for sea-river shipping on the United Kingdom – Germany corridor (Rhine). They examine its competitiveness with regard to a number of alternative transport modes. Nonetheless, there is no study which calculates the volume that divides the transport market between sea-river shipping and a “river + sea” alternative. A reasonable question arises: at which threshold, in terms of tonnage, are sea-river vessels more efficient than barge+shortsea transport service? Comparing the returns to scale of each transport chain, we define this tipping point. The costs production function is taken from Cullinane – Khanna (2000) and Stopford (2002). After addressing this question, we determine, for different ports of the Rhône-Saône corridor, the maximum sea trip that is efficient for a sea-river vessel (as a function of tonnage). After Rissoan (1987), we define the competitive navigational area of sea-river shipping. Our specific contribution is to consider the nautical access offered by inland ports along the Rhône and the Saône
Chergui, Hassan. "Flux et processus de dégradation des apports allochtones particulaires dans un système fluvial : importance relative de l'écotone rives." Lyon 1, 1988. http://www.theses.fr/1988LYO10093.
Повний текст джерелаFranquet, Evelyne. "Occupation d'un espace fluvial par les diptères chironomidés à l'aval du Rhône : répartition des espèces selon la nature du substrat et les conditions de débit." Lyon 1, 1996. http://www.theses.fr/1996LYO10142.
Повний текст джерелаPoizat, Gilles. "Echelle d'observation et variabilité des abondances de juvéniles de poissons dans un secteur aval du Rhône." Lyon 1, 1993. http://www.theses.fr/1993LYO10083.
Повний текст джерелаBarrat-Segretain, Marie-Hélène. "Patch dynamics concept et végétation aquatique : stratégies de recolonisation de zones perturbées dans des anciens chenaux fluviaux." Lyon 1, 1995. http://www.theses.fr/1995LYO10323.
Повний текст джерелаMartinet, Fabrice. "Le macrobenthos limivore, descripteur des flux organiques liés aux sédiments : exemples dans diverses annexes fluviales du Rhône." Lyon 1, 1993. http://www.theses.fr/1993LYO10065.
Повний текст джерелаBornette, Gudrun. "Analyse synchronique et diachronique du fonctionnement des anciens chenaux tressés du Rhône : effet des perturbations hydrauliques sur la dynamique de la végétation aquatique." Lyon 1, 1992. http://www.theses.fr/1992LYO10300.
Повний текст джерелаHenry, Christophe P. "Des perturbations à la restauration des écosystèmes aquatiques : expérimentation sur d'anciens chenaux du Rhône." Lyon 1, 1995. http://www.theses.fr/1995LYO10138.
Повний текст джерелаRossiaud, Jacques. "Réalités et imaginaire d'un fleuve : recherches sur le Rhône médiéval." Paris 1, 1994. http://www.theses.fr/1994PA010558.
Повний текст джерелаThe studies here associated run a bout economical, social and cultural life in the Rhône valley during the end of the middle ages (xivth and xvth cent. ) A large part of the work interests the river's representations of a geographical and historical point of view
Nicolas, Yann. "Le peuplement piscicole du bas-Rhône : occupation d'un espace fluvial aménagé et typologie des sites de nursery et de refuge." Lyon 1, 1996. http://www.theses.fr/1996LYO10098.
Повний текст джерелаOllivier, Patrick. "Interface continent-océan : géochimie du Rhône (flux et bilan d'érosion) et transfert d'eaux souterraines en Camargue (apports des isotopes du radium)." Aix-Marseille 3, 2006. http://www.theses.fr/2006AIX30005.
Повний текст джерелаVariation of the contributions in elements and sediments of inland waters (rivers and groundwaters) in the coastal zones strongly affects the balance of the coastal environments. The objective of this study is to quantify the contributions of water and material by the Rhone River and submarine groundwater of Camargue in the Gulf of Lions, and to estimate their variations and their origins. Flood events of Rhone River contribute to 80% annual fluxes of MeS and particulate elements exported in less than 12% of time, between November 2000 and December 2003. The SPM load is slightly affected by the remobilisation of the sediments in the bed of the river. The Rhone River seems export less solid material compared with what is theoretically produced in its catchment area. Two assumptions are formulated : the Rhone River is not in steady state erosion due to climatic change, or imbalance translates the anthropogenic influence (dams, deforestation) in its catchment area. The contributions of submarine groundwater of Camargue in the Gulf of Lions were quantified by radium-226 and 228 measured by TIMS. The assessment in budget of radium of the Gulf of Lions indicates a excess which can be explained by contributions of groundwater. 6% of the water fluxes of the Rhone River in the Gulf of Lions comes from Camargue groundwater
Combroux, Isabelle. "Influence de la nature et de la fréquence des perturbations sur les banques de diaspores dans les communautés végétales aquatiques." Lyon 1, 2002. http://www.theses.fr/2002LYO10025.
Повний текст джерелаDurey, Louis. "Le rôle des imaginaires dans la production d'un espace, une sociohistoire de deux siècles d'aménagement du Rhône." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSES043.
Повний текст джерелаThe aim of this article is to elaborate a geohistory of the Rhône through two centuries of capitalism based on a social understanding of imaginaries. Through an empirical analysis we document the embededness of todays management practices within historical constructions. We consider the historical making of the Rhône as the product of imaginaries intertwinned with technologies. Those imaginaries make possible the realization of capitalist accumulation into local space. This analysis sheds light on the continuity of logics that characterize todays river ecological restoration, which might consist in the reproduction of a normalization of local space
Delahaye, Emmanuelle. "Les espaces fluvio-urbains rhodaniens à l’aval de Lyon : vienne, Valence, Avignon, Tarascon, Beaucaire et Arles : des territoires à la dérive ?" Thesis, Lyon 2, 2009. http://www.theses.fr/2009LYO20002/document.
Повний текст джерелаThe urban river spaces in the lower Rhône valley are a special case in the international waterfront redevelopment process that began during the sixties. There has been no significant restructuring of Rhône riverfronts downstream of Lyon in spite of their urbanistic potential and the wishes expressed by some local authorities. The urban heritage of the Rhône riverbanks is ossified or neglected and sometimes completely abandoned. This lack of action concerning the waterfronts reflects the paradoxical situation concerning the Rhône valley: a combination of inert towns and an imposing river that has been highly developed. It also shows that waterfront redevelopment is neither a systematic nor a universal process.The marginalization of these river-banks is due to factors related to both the hydrosystem and the social system. The hydrology of the river acts as a constraint on urban planning, and the Rhône riverfronts also suffer from problems caused by deficiencies in the various bodies involved and from the heavy road infrastructures built on the river-banks. A complex administrative and legislative framework further hampers the urban redevelopment of the river spaces.Poor management of these riverfront spaces combines with failures in flood risk policies. Cities struggle to apply safety politics because the Rhône presents a specific and changing risk and because of the passivity of the urban actors. However, as the risk has become a political issue, it has turned out to be a driving force behind the development of the Rhône riverbank area. An integrated sustainable development project named “Plan Rhône” aims at coordinating risk management in the whole of the river basin, and is the first step in territorial renewal. The towns are not yet involved in this project
Darmendrail, Dominique. "Filtration géochimique de métaux lors de leur transfert d'une rivière vers une nappe alluviale : applications à la nappe des alluvions du Rhône (69) et de la Deule (59)." Bordeaux 3, 1987. http://www.theses.fr/1987BOR30200.
Повний текст джерелаRiquier, Jérémie. "Réponses hydrosédimentaires de chenaux latéraux restaurés du Rhône français : structures spatiales et dynamiques temporelles des patrons et des processus, pérennité et recommandations opérationnelles." Thesis, Lyon 2, 2015. http://www.theses.fr/2015LYO20111/document.
Повний текст джерелаOver the past two centuries, the hydrological regime and the fluvial dynamics of the Rhône River have been highly modified, leading to a drastic decrease in the structural and functional habitat diversity of the main river channel and floodplains. An ambitious restoration project was initiated at the end of the 1990's. This thesis deals with the monitoring of 18 floodplain channels, which were restored between 1999 and 2006. We combined analysis based on grain size of deposits, fine sediment thicknesses, water depth, topographical and hydrological data and airborne imagery. We used pre-restoration data for 12 floodplain channels coupled with between three and seven post-restoration surveys for each channel, ranging from 5 to 15 years after restoration. To assess the adjustment of hydromorphological conditions, the physical functional diversity and the persistence of floodplain channels as aquatic habitats, we used statistical analysis and a modeling approach that allowed us to forecast conditions. Results demonstrate that both (i) grain size patterns and (ii) fine sediment accumulation rates can be predicted using simple hydrologic and/or hydraulic descriptors (upstream overflow frequency, shear stress, back-flowing capacity), which reflect the control exerted by the geometry of floodplain channels on their flooding regime (upstream overflow frequency, shear stress and backflow capacity). Such empirical statistical relationships can be used a priori to estimate the potential effects of different floodplain channel geometries on the propensity to accumulate fine sediment and the grain sizes of this sediment. Estimates of potential ranges of floodplain channel life spans are provided and discussed according to multiple trend models. This research has direct application and provides tools to river managers that will help guide this type of floodplain channel restoration design in the future on the Rhône River
Bautista-Vega, Alicia. "Etude des réseaux trophiques aboutissant aux rougets méditerranéens (Mullus barbatus et M. Surmuletus) par l'utilisation des isotopes stables." Aix-Marseille 2, 2007. http://theses.univ-amu.fr.lama.univ-amu.fr/2007AIX22088.pdf.
Повний текст джерелаGoatfishes (Mullidae) are benthic species inhabiting coastal bottoms down to the end of the continental shelf, and constitute a major economic resource in the Mediterranean. The main objectives of this work were to study the diet of Mullus barbatus and M. Surmuletus, and to understand the influence of the Rhone River inputs on the food webs’ structure ending to these species. We studied how the particular organic matter (POM), the basis of food webs, was integrated into the coastal ecosystems subjected, or not, to river inputs in 2004. We have (1) analysed the suspended matter, sediments, benthic macrofauna, and goatfish (different size-classes) in different sites and depths, (2) analysed the samples through stable isotopes (white muscles of fish, water POM, sediments, macrofauna), (3) analysed the stomach contents of fish, and (4) determined the variations of the isotopic signature (carbon and nitrogen) of the terrestrial POM transported by the Rhone River, in order to follow its pathway within the coastal food webs. Our results have shown a fish diet dominated by polychaetes (carnivores, sub-surface depositiovores and surface depositivores) and various crustaceans (amphipods, cumaceans, macrurans and brachyurans). However, this diet varied according to species, and mainly according to fish size. We have obtained the isotopic signatures (δ15N and δ13C) for Mullus barbatus and M. Surmuletus. The results for δ15N displayed significant differences of trophic level for Mullus barbatus depending on fish size, distance from the Rhone River mouth and depth. In contrast, in all sites and depths, δ15N value did not vary with fish size in M. Surmuletus. In both species, δ15N values were significantly lower in sites non subjected to river inputs. δ13C signature in Mullus barbatus exhibited slight differences with fish sizey in some sites of the Gulf of Lions, whereas δ13C signature in M. Surmuletus did not shown any variation with fish size or sites. Thus, one could suggest that the basis of food webs was different in sites subjected and not subjected to river inputs. In addition, our results indicated that the Rhone River did not influence significantly the food webs ending to these species, except to a modest extend for M. Barbatus strait off the river mouth. On the reverse, the food webs of both species were mainly based on carbon from marine origin in the different sites. It thus appeared that the food webs of the two mullid species were not much influenced by the Rhone river inputs, and the transfert of organic matter through diet was mostly characterized by a marine pathway
Schmidt, Natascha. "Environmental occurrence and fluxes of organic contaminants of emerging concern in the coastal NW Mediterranean sea and the Rhône river." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0270.
Повний текст джерелаOrganic contaminants of emerging concern, such as phthalates (PAEs), organophosphate esters (OPEs), bisphenols (BPs), perfluorinated compounds (PFCs) and microplastics (MPs) are nowadays widely distributed in aquatic environments. Their occurrence in the Bay of Marseille, the Rhône River and the tropical North Atlantic was investigated in this study. The Rhône River is shown to be a source of MP and plastic additive inputs to the Gulf of Lions (NW Mediterranean Sea) and intrusions of its waters are shown to be enough to attain PFC concentrations exceeding the annual average Environmental Quality Standard in the Bay of Marseille. In the Bay of Marseille, zooplankton samples exhibit particularly high PAE concentrations, raising questions concerning the consequences for the marine food web and local marine resources. Finally, the possibility of long-range OPE transport is examined at the scale of the tropical North Atlantic
Mauclaire, Laurie. "Les aquifères alluviaux : interactions entre les compartiments physique, chimique, microbiologique et faunistique." Lyon 1, 1999. http://www.theses.fr/1999LYO10022.
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