|
|
|
| Registros recuperados: 38 | |
|
| |
|
|
| Gourmelon, Michele. |
| La contamination de l’environnement par des bactéries ou des virus d’origine fécale par le biais des rejets résultant des activités urbaines ou agricoles constitue un risque important pour la santé humaine et une préoccupation pour la pérennité de certains usages en zone littorale. La bactérie Escherichia coli (E. coli) a été retenue comme indicateur de contamination fécale pour évaluer la qualité sanitaire des zones conchylicoles et des zones de baignade et pour établir leur classification. L’étude des bactéries entériques et des marqueurs de l’origine des contaminations fécales dans l'environnement littoral constitue l’essentiel de mes activités de recherche à l’Ifremer. C’est ce travail qui sera présenté lors de cette soutenance. J'’ai tout d’abord... |
| Tipo: Text |
Palavras-chave: Contamination microbiologique; Littoral; Bactéries entériques; Environnement; Contaminatin fécale. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00256/36764/35369.pdf |
| |
|
| |
|
| |
|
|
| Paticat, Francois. |
| The aim of the study is to determine how seawater is used in Ré island marine ponds (Charente-Maritime, France). Thus, we assessed the ecosystem functioning, estimated its historical evolution and determined the most suitable ways to improve current management processes. The knowledge of seawater management is essential to ensure wetland future and meet the numerous interests of wetland stakeholders, especially in term of seawater sharing. Consequently, it is necessary to consider the Ré island marine embanked wetland through its natural as well as human characteristics. Our work followed two research axes. First, a survey and a description of wetland activities were realized through their management types and their water use features, knowing that human... |
| Tipo: Text |
Palavras-chave: Ré Island; Activities; Management; Saltwater; Flows; Coastline; Île de Ré; Activités; Gestion; Eau de mer; Flux; Littoral. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/these-4518.pdf |
| |
|
|
| Le tixerant, Matthieu; Bonnin, Marie; Gourmelon, Françoise; Ragueneau, Olivier; Rouan, Mathias; Ly, Ibrahima; Ould zein, Ahmed; Ndiaye, Fatou; Diedhiou, Mohamed; Ndao, Souleye; Ndiaye, Mamadou Bassirou. |
| In the marine environment, positive law generates multiple zones and regulatory limits that overlap in space, justifying a cartographic representation as a relevant approach to promote understanding (synthetic vision), analysis (highlighting legal anomalies, inconsistencies and redundancies), dissemination and communication to different audiences (awareness-raising). The article presents a methodology leading to the mapping of marine and coastal environmental law in West Africa, using a geographic information base to produce static or interactive cartographic representations via a Geographic Data Infrastructure (GDI). It shows the contribution of this type of mapping to a transversal approach in a multi-activity, multi-sectoral and multi-scale context. A... |
| Tipo: Text |
Palavras-chave: Afrique de l’ouest; Mer; Littoral; Droit de la mer; Environnement; SIG; Cartographie; West Africa; Sea; Coastal zone; Law of the sea; Environment; GIS; Cartography. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76813/81628.pdf |
| |
|
|
| Lafon, Virginie; Marieu, Vincent; Butel, Rémi; Dehouck, Aurélie; Froidefond, Jean-marie; Trut, Gilles. |
| This study presents the first results of an ongoing research program that aims to derive thematic maps of the intertidal lagoon of Arcachon (SW Atlantic coast of France) from space imagery. At this stage, we present the results of the tests performed on Formosat-2 imagery. Several classification strategies have been tried with the aim to discriminate the sedimentary facies and the main species of the lagoon. The classes calculated by an optimized unsupervised clustering method, based on simulated annealing global minimization technique, were used to train a supervised classification algorithm. This approach allowed us to derive a bio-sedimentary map which overall accuracy is about 84%. Also, this method has the advantage of describing the fraction of... |
| Tipo: Text |
Palavras-chave: Télédétection; Cartographie; Littoral; Classification optimisée; Recuit simulé. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00254/36572/35110.pdf |
| |
|
|
| Hitier, Benoist; Olivesi, Rene; Rybarczyk, Hervé; Delesmont, Régis; Morel, Marc; Loquet, Nicolas. |
| Nutrients levels of marine water along the North of France coastline are growing-up. They have a good chance to become a problem in the future. Since 1992, a network of three radial lines is sampled at regular interval to supervise on long term : 1. Parameters levels that show the environment quality (temperature, salinity, turbidity,total suspended matters, organic suspended matters, chlorophyll, phaeopigments, phytoplankton). 2. Nutrients concentrations ( ammonia, nitrite, nitrate, phosphate, silicate) that enrich the environment , and may be responsable of its deterioration. The report shows the results of the first three years survey. I t strikes a correlation between the tested parameters and takes stock of the present situation. |
| Tipo: Text |
Palavras-chave: Suivi; Littoral; Nord-Pas de Calais; Picardie; Nutriments; Chlorophylle; Eutrophisation; Survey; Coastline; North of France; Picardie; Nutrients; Chlorophyll; Eutrophycation. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00082/19277/16872.pdf |
| |
|
| |
|
|
| Rodriguez, Thibault; Fourrier, Adeline; Mazouni, Nabila; Rey-valette, Helene; Roussillon, Jean Philippe; Laugier, Thierry; Loubersac, Lionel. |
| After a reminder on the program SYSCOLAG (Coastal and Lagoons Systems), of the regulatory and legislative context in territorial economic planning on the coast, we describe the structure of the developed methodological tool. We clarify then the method according to its three main trunk roads: effects of the activities and uses on the economy of the territory, the effects of the activities and uses on the natural environment and the living environment, the evaluation of the interactions between activities and uses. We apply the method exposed in a frame demonstrator by taking the scenario of the lagoon and coastal territory of the Thau Basin (Hérault). A set of appendices, including in particular evaluation grids are supplied with support for the... |
| Tipo: Text |
Palavras-chave: Développement durable; Approche participative et pluridisciplinaire; SCOT; Volet Maritime; Diagnostic; Indicateur; Mer; Littoral; Impact environnemental; Effet socio-économique; Interaction; Activité; Usage. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00189/30058/28545.pdf |
| |
|
| |
|
|
| Lunven, Michel; Guillaud, Jean-francois; Crassous, Marie Pierre; Youenou, Agnes; Gohin, Francis; Huret, Martin; Danielou, Marie-madeleine; Kerouel, Roger; Labry, Claire; Aminot, Alain. |
| Inscrite dans le cadre du Grand Défi Golfe de Gascogne, la campagne VILOIR a été réalisée du 19 au 26 Juin 2003 à bord du Côtes de la Manche avec pour objectif l’étude en période estivale des structures hydrologiques et phytoplanctoniques des panaches de la Loire et de la Vilaine. Elle fait suite, sur la même thématique, à la campagne hivernale NUTRIGAS (2001) et à la campagne printanière GASPROD (2002). |
| Tipo: Text |
Palavras-chave: Surveillance; Littoral; Phytoplancton; Phycotoxines; Bretagne; Pays de Loire. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00144/25494/23648.pdf |
| |
|
|
| Populus, Jacques; Deshoux, Vincent. |
| Lever la topographie de la zone côtière à l’aide de la technique du télémètre laser (Lidar) aéroporté présente de multiples avantages par rapport aux méthodes classiques : la mesure est rapide, dense et précise, autorisant la cartographie du relief de zones d’estran difficilement accessibles aux moyens classiques. L’Ifremer et la Cellule de Mesures et de Bilans ont organisé en 2002 la couverture de plusieurs sites du littoral ouest de la France. La mise en oeuvre des levés et la validation des données sont rapidement exposés, ainsi que la précision que l’on peut en attendre, sur sol nu et végétation basse. Au plan des applications, la cartographie des habitats, objet du réseau "Réseau benthique" (Rebent, aujourd’hui opérationnel en Bretagne), utilise... |
| Tipo: Text |
Palavras-chave: Altimétrie; Bathymétrie; Lidar; Photogrammétrie; Littoral; Zone côtière; Marée; Modélisation hydrodynamique; MNT. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00151/26251/24333.pdf |
| |
|
| |
|
| |
|
|
| Le Gouvello, Raphaela; Hochart, Laure-elise; Laffoley, Dan; Simard, Francois; Andrade, Carlos; Angel, Dror; Callier, Myriam; De Monbrison, David; Fezzardi, Davide; Haroun, Ricardo; Harris, Alasdair; Hughes, Adam; Massa, Fabio; Roque D'Orbcastel, Emmanuelle; Soto, Doris; Stead, Selina; Marino, Giovanna. |
| To meet the Convention on Biological Diversity's Aichi Target 11 on marine biodiversity protection and Aichi Target 6 on sustainable fisheries by 2020, as well as the Sustainable Development Goal (SDG) 2 on food security and SDG 14 on oceans by 2030, there is an urgent need to rethink how best to reconcile nature conservation and sustainable development. This paper argues for effective governance to support processes that apply principles of sustainable development and an ecosystem approach to decide about economic activities at sea such as aquaculture. It describes opportunities, benefits and synergies between aquaculture and MPAs as a basis for wider debate. The scope is not a comprehensive analysis of aquaculture and MPAs, but rather to present examples... |
| Tipo: Text |
Palavras-chave: Aquaculture; Ecosystem approach; Environmental impact assessment; Littoral; Marine protected area; Ocean; Sublittoral. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00398/50969/51848.pdf |
| |
|
| |
|
|
| Chevalier, Claude; Heral, Maurice; Razet, Daniel. |
| Dans le contexte de développement agricole très actif des trente dernières années les marais atlantiques littoraux qui couvrent, pour leur partie endiguée environ 300.000 ha. ont été et continuent d'être soumis à des transformations importantes qui influent sur la circulation et la qualité des eaux de surface. Ce développement, visant à une amélioration de la productivité et à une meilleure intégration de l' activité agricole dans les grands processus économiques, s'est appuyé, là comme ailleurs, sur les intensifications fourragère et surtout céréalière. L'adaptation de ce modèle général aux caractéristiques écologiques du milieu nécessitait de limiter les effets des excès d'eau hivernaux sur la mise en culture ainsi que ceux de la sécheresse estivale sur... |
| Tipo: Text |
Palavras-chave: Marais atlantique; Littoral; Agriculture; Conchyliculture; Impact; Compatibilité; Charente Maritime Dep.. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/00071/18235/15795.pdf |
| |
|
|
| Thebaud, Olivier. |
| This report presents, in two parts, the results of a study carried out on the coast of Martinique, during 1993. The first part presents the evolution of perceptions and uses of coastal areas, linked to the socio-economic transformations of the island. Completing this presentation, based on the analysis of management plans from different periods, an overview of the recent state of occupation of coastal areas in Martinique is also given. The second part presents four case studies of conflictual situations concerning access to coastal areas, on l and and at sea, considering differents types of activities and decision-making processes. For each case study, an investigation has been conducted to identify implied actors, their motivations and strategies, as well... |
| Tipo: Text |
Palavras-chave: Regulation; Decision making process; Conflicts; Martinique; Coast; SEM; Réglementation; Processus de décision; Conflits; Martinique; Littoral. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/1994/rapport-2140.pdf |
| |
|
|
| Lacroix, Denis; Mora, Olivier; De Menthiere, Nicolas; Bethinger, Audrey. |
| L’interface terre-mer, prise au sens large, est un espace fragile, convoité et soumis à de multiples pressions sans qu'il n’y ait de vision d'ensemble des populations et des activités qui s'y développent, ni de maîtrise globale des multiples décisions concernant ce milieu. Or la montée du niveau de l'océan apparaît comme une des pressions majeures de ce siècle. Son ampleur et ses effets à long terme sont difficiles à identifier, et donc, à anticiper. Toutefois, si les causes sont encore incomplètement analysées et comprises, les premiers effets sont déjà observables sous diverses formes et sur de nombreux sites. Les impacts de cette élévation sont encore faibles aujourd'hui, mais les projections portent à penser que l’élévation du niveau de la mer va... |
| Tipo: Text |
Palavras-chave: Montée du niveau de la mer; Subsidence; Deltas; Inondation; Littoral; Risques côtiers. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00598/70975/69207.pdf |
| |
| Registros recuperados: 38 | |
|
|
|
