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| Registros recuperados: 38 | |
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| Mouillot, D; Spatharis, S; Reizopoulou, S; Laugier, Thierry; Sabetta, L; Basset, A; Chi, T. |
| 1. Transitional waters, described as critical transition zones because of their position at terrestrial, freshwater and marine interfaces, provide essential goods and services to the biosphere including human populations. These ecotones face increasing human influence mainly due to population density increase in coastal areas. 2. Transitional water bodies have, to date, received little attention in the development of ecological status indicators, this is a critical deficiency when trying to meet the Water Framework Directive objective of all significant water bodies achieving good ecological status by the year 2015. 3. In order to assess changes in transitional water communities many taxonomic-based indicators have already been proposed but there are a... |
| Tipo: Text |
Palavras-chave: Biotic descriptors; Productivity; Functional diversity; Functional traits; Body size; Water Framework Directive WFD. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1849.pdf |
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| Castro-jimenez, Javier; Mariani, G.; Vives, I.; Skejo, A.; Umlauf, G.; Zaldivar, Jose-manuel; Messiaen, Gregory; Laugier, Thierry. |
| Persistent organic pollutants (POPs) present in the airshed of a given environment may participate in exchange / deposition processes that will determine their inputs to the terrestrial or aquatic ecosystems. In addition, physico-chemical properties of POPs may favour long range atmospheric transport to other areas, even reaching remote zones. It is therefore important to determine the airshed POPs concentration in order to evaluate the potential amounts that may participate in the mentioned processes. Coastal lagoons are characterized by a high biodiversity and intense primary production leading to both ecological and economical considerable importance. Thau lagoon seems to be under intense anthropogenic pressure (urban, industrial, agricultural and shell... |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00006/11772/8481.pdf |
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| Laugier, Thierry; Malet, Nathalie; Munaron, Dominique; Derolez, Valerie; Fiandrino, Annie; Barral, Marc; Moragues, Laurent; Mazouni, Nabila; Graille, Chantal. |
| The poster presents the approach that led to the construction of a network of cooperation between managers and scientists for coastal lagoon management in the region of Languedoc-Roussillon, its architecture and modus operandi, its achievements and developments over time. At the end of the ninety’s, eutrophication and lack of knowledge were identified as issues to enhance the management of coastal lagoons on the Mediterranean coast of France. In 2000, in the region of Languedoc-Roussillon, scientists (Ifremer) and institutional managers (Regional Council of Languedoc-Roussillon and Water Agency Rhône-Méditerranée & Corse) joined their forces in building a network to address this need. The core of this network consists of an operational tool for the... |
| Tipo: Text |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00002/11343/8101.pdf |
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| Malet, Nathalie; Derolez, Valerie; Laugier, Thierry; Munaron, Dominique; Fiandrino, Annie; Messiaen, Gregory; Fortune, Martine; Souchu, Philippe; Barral, Marc; Daloz, Aurélien; Moragues, Laurent. |
| Since recent decades, nutrient-related eutrophication, originating from agricultural use of fertilizer and population enhancement, can be considered worldwide as the main disturbance for coastal lagoons. Since coastal lagoons are very shallow and enclosed, their functioning is tightly linked to meteorological conditions. The aim of this study is to compare different rainfall levels and eutrophication response on coastal lagoons of the Languedoc-Roussillon (Western Mediterranean coast), subject to different nutrient loads from their watershed, in order to check the possibility to distinguish the effects of watershed management or rainfall conditions on water quality (waste water treatment plant improvement, decrease of fertilizer spreading). |
| Tipo: Text |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00008/11945/8651.pdf |
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| Galgani, Francois; Senia, Jocelyn; Guillou, Jean-louis; Laugier, Thierry; Munaron, Dominique; Andral, Bruno; Guillaume, B.; Coulet, E.; Boissery, P.; Brun, L.; Bertrandy, M. C.. |
| In order to better understand environmental disturbances in the French coastal Mediterranean lagoons, we used an ecotoxicological approach based on the measurement of the toxicity of the sediments using oyster embryo bioassay that provides a basis for assessing the effects on the fauna of contaminants adsorbed on the sedimentary particles. The study covers all of the main lagoons of the French Mediterranean coasts of Languedoc Roussillon, Camargue, and Provence (Berre and Bolmon lagoons), where 188 stations were sampled. The toxicity tests provide evidence of variable levels of toxicity in sediments. Contaminated lagoons such as La peyrade, Le canet, and Ingrill and locally affected lagoons such as Bages-Sigean, Vaccares, Bolmon, and Berre have sampling... |
| Tipo: Text |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6835.pdf |
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| Laugier, Thierry; Selmaoui-folcher, Nazha; Soulard, Benoit. |
| Ce séminaire de réflexion, souhaité et organisé conjointement par la province Nord et l’IRD, en association avec l’ensemble des organismes de recherche scientifique présents en Nouvelle-Calédonie, avait pour objectif à la fois de : • dresser et présenter un bilan des recherches scientifiques conduites par les différents organismes de recherche en province Nord, mais également de • poser les bases prospectives d’une recherche scientifique qui, dans le futur, réponde au mieux aux attentes et besoins exprimés par la province Nord. Deux questions générales et transversales ont donc sous-tendu, du 19 au 21 juin 2013, les réflexions et travaux des trois journées d’échanges et de discussions : • Quelles recherches scientifiques développer pour venir en appui... |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00272/38371/36683.pdf |
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| Castro-jimenez, J.; Mariani, G.; Vives, I.; Skejo, H.; Umlauf, G.; Zaldivar, J. M.; Dueri, Sibylle; Messiaen, Gregory; Laugier, Thierry. |
| Atmospheric concentrations and deposition fluxes of PCDD/F and PCB have been evaluated over a 1-year period in a Mediterranean coastal lagoon (Etang de Thau, France). Indicative PBDE air concentrations in the hot season are also reported in this work. ∑2,3,7,8-PCDD/Fs and ∑18PCBs (gas + particulate) air concentrations ranged from 67 to 1700 fg m−3 and from 13 to 95 pg m−3, respectively whereas ∑8PBDEs (gas + particulate) summer time levels varied from 158 to 230 pg m−3. The PCDD/F and PCB atmospheric occurrence over Thau lagoon and subsequent inputs to the surface waters are determined by an assemble of factors, being the seasonality of atmospheric concentration, the air mass origin and meteorological conditions important drivers. Total (wet + dry)... |
| Tipo: Text |
Palavras-chave: PCDD/F; Dioxin-like PCB; PBDE; Air; Water. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00033/14429/12600.pdf |
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| Collos, Y; Vaquer, A; Laabir, M; Abadie, Eric; Laugier, Thierry; Pastoureaud, Annie; Souchu, Philippe. |
| A monitoring program with a weekly sampling frequency over a 15-month period indicates that urea concentrations above a certain threshold level may trigger the blooms of Alexandrium catenella in Thau lagoon. However, urea concentrations were also sometimes related to ammonium and dissolved organic nitrogen concentrations, indicating that the role of urea may not be a direct one. An original approach is used to assess the relative contribution of several nitrogen sources (nitrate, nitrite, ammonium, urea) to growth of A. catenella by comparing nitrogen uptake rates to nitrogen-based growth rates estimated from dilution experiments during four blooms over a 4-year period (2001-2004) in Thau lagoon. Nitrate and nitrite contributed 0.1-14% and 0.1-5%... |
| Tipo: Text |
Palavras-chave: Uptake kinetics; Ammonium; Urea; Growth; Nitrogen; HAB; Alexandrium catenella. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-6454.pdf |
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| Bec, Beatrice; Collos, Yves; Souchu, Philippe; Vaquer, Andre; Lautier, Jacques; Fiandrino, Annie; Benau, Laurent; Orsoni, Valerie; Laugier, Thierry. |
| We explored the role of natural and anthropogenic environmental perturbations in shaping the community structure and dynamics of pico- and nanophytoplankton in coastal waters. The distribution patterns of phycoerythrin-rich picocyanobacteria (PE-CYAN) and phycocyanin-rich picocyanobacteria (PC-CYAN), autotrophic picoeukaryotes (PEUK) and nanophytoplankton (NANO) were examined over a period of 3 yr in 24 Mediterranean coastal lagoons displaying wide trophic gradients (from 0.2 to 630 mu g chlorophyll a [chl a] l(-1)) and salinity gradients (from fresh to marine waters). In summer, picoplanktonic abundances reached 3 x 10(8) cells l(-1), 5 x 10(9) cells l(-1) and 6 x 10(10) cells l(-1) for PE-CYAN, PC-CYAN and PEUK, respectively. PE-CYAN and PC-CYAN showed... |
| Tipo: Text |
Palavras-chave: Autotrophic picoeukaryotes; Picocyanobacteria; Nanophytoplankton; Abundance; Biomass; Eutrophication; Mediterranean lagoons. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00031/14267/11547.pdf |
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| Brehmer, Patrice; Laugier, Thierry; Kantoussan, J.; Galgani, Francois; Mouillot, D.. |
| Ensuring the sustainability of fish resources necessitates understanding their interaction with coastal habitats, which is becoming ever more challenging in the context of ever increasing anthropogenic pressures. The ability of coastal lagoons, exposed to major sources of disturbance, to provide resources and suitable habitats for growth and survival of juvenile fish is especially important. We analysed three lagoons with different ecological statuses and habitat quality on the basis of their eutrophication and ecotoxicity (Trix test) levels. Fish abundances were sampled using fishing and horizontal beaming acoustic surveys with the same protocols in the same year. The relative abundance of Anguilla anguilla, Dicentrarchus labrax or the Mugilidae group was... |
| Tipo: Text |
Palavras-chave: Fish; Shallow water; Ecotoxicity; Lagoon; Habitat quality; Amphidromous. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00148/25963/24083.pdf |
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| Lemonnier, Hugues; Lantoine, Francois; Courties, Claude; Guillebault, Delphine; Nezan, Elisabeth; Chomerat, Nicolas; Escoubeyrou, Karine; Galinie, Christian; Blockmans, Bernard; Laugier, Thierry. |
| Tropical shrimp aquaculture systems in New Caledonia regularly face major crises resulting from outbreaks of Vibrio infections. Ponds are highly dynamic and challenging environments and display a wide range of trophic conditions. In farms affected by vibriosis, phytoplankton biomass and composition are highly variable. These conditions may promote the development of harmful algae increasing shrimp susceptibility to bacterial infections. Phytoplankton compartment before and during mortality outbreaks was monitored at a shrimp farm that has been regularly and highly impacted by these diseases. Combining information from flow cytometry, microscopy, pigment and phylogenetic analysis, the presence of Picocyanobacteria, Prasinophyceae and Diatomophyceae were... |
| Tipo: Text |
Palavras-chave: Tropical aquaculture pond; Litopenaeus stylirostris; Vibriosis; Eutrophication; Phytoplankton; Harmful algae. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00343/45411/44986.pdf |
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| Pelletier, Dominique; Bockel, Thomas; Roman, William; Carpentier, Liliane; Laugier, Thierry. |
| - The AMBIO project conducted a comprehensive video-based baseline assessment of coral reef fish communities and associated habitats in the New Caledonian lagoons. The surveys rely on remote unbaited underwater video observations, using the STAVIRO rotating technique. Chesterfield and Bellona remote reefs and atolls are located in the Coral Sea Marine Park, northwest of New Caledonia. -This 2013 survey is the first scientific survey covering the entire area, with a sampling design stratified according to reef type. 203 stations were validated within 10 days. They were analyzed to characterize the habitat surrounding each station, and fish communities, based on a list of 565 fish species (cf. AMBIO/A/1). - 34 indicators were computed and mapped (maps... |
| Tipo: Text |
Palavras-chave: Biodiversité; Ichtyofaune; Habitat; Vidéo sous-marine; STAVIRO; Evaluation; Suivi; Parc de la Mer de Corail; Aire Marine Protégée; AMP; Ecosystème corallien; Nouvelle-Calédonie; Indicateur; Tableau de bord; Serveur de cartes; Sextant; PAMPA; Biodiversity; Fish; Habitat; Underwater video; STAVIRO; Monitoring and assessment; Coral Sea Marine Park; Marine Protected Area; MPA; World Heritage; Coral reefs; New Caledonia; Indicator; Dashboard; Map server; Sextant; PAMPA. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00381/49247/49700.pdf |
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| Serais, Ophelie; Lequette, C; Alonso, P.; Amouroux, Isabelle; Laugier, Thierry. |
| Ce rapport présente les résultats de l’étude de dossier, de l’inspection du littoral et des campagnes de localisation des gisements de tellines réalisés dans le cadre de l’étude sanitaire de la zone de production n°34.09 «Bande littorale de Port Ambonne au feu ouest du Brise Lames extérieur du port des quilles», sous financement de la Direction Générale de l’Alimentation (DGAL), et à maîtrise d’ouvrage de la Direction Départementale des Territoires de la Mer (DDTM). Les principales sources potentielles de pollution de la zone de production n°34.09 semblent être, par ordre de criticité décroissant : le ruissellement pluvial de la ville de Sète, le ruissellement pluvial de Marseillan-Ambonne, le port de Marseillan-Ambonne, les installations en assainissement... |
| Tipo: Text |
Palavras-chave: Étude sanitaire; Sources de contamination microbiologique; E. Coli; Bande littorale de Sète à Port-Ambonne; Gisement de tellines. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00514/62603/66962.pdf |
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| Brehmer, Patrice; Thang Do Chi,; Laugier, Thierry; Galgani, Francois; Laloe, Francis; Darnaude, Audrey M.; Fiandrino, Annie; Mouillot, David. |
| 1. Abiotic and biotic variables of coastal lagoons are highly heterogeneous in both space and time, and this heterogeneity complicates the assessment of their ecological status. These variables are essential to the monitoring and preservation of these fragile ecotones and the resources and services they sustain. 2. An integrative approach for evaluating the ecological status of coastal lagoons, based on field investigations of the key parameters driving their functioning and a set of selected ecological indicators matching lagoon management information needs for societal benefits, is investigated. Consistency in lagoon status evaluation from multiple and different variables was estimated, through a case study comparing three adjacent yet contrasting French... |
| Tipo: Text |
Palavras-chave: Coastal lagoon; Ecological assessment; Ecotoxicology; Eutrophication; Indicator; Management; Mediterranean Sea; Observatory. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00056/16702/14202.pdf |
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| 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 |
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| Beliaeff, Benoit; Bouvet, Guenole; Fernandez, Jean-michel; Laugier, Thierry; David, Carine. |
| This guide is intended to facilitate the implementation of specifications for marine environmental monitoring in New Caledonia. It is intended for public or private environmental actors. He provides a set of information on marine monitoring: summary of environmental regulations and the practical implications, definitions of terms, proposed general approach for the establishment of a monitoring, sampling strategy elements, method to develop reference frames, recommendations for the management and exploitation of data collected. The guide also provides lists of suggested environmental parameters to monitor for different pressures and general state of the environment, as well as, a set of methodology sheets for parameters and (when available) the reference... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00050/16163/13647.pdf |
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| Oheix, Jocelyne; Lauret, Michel; Derolez, Valerie; Malet, Nathalie; Laugier, Thierry. |
| Guide de reconnaissance et de suivi des principales espèces de macrophytes dans les lagunes du Languedoc-Roussillon. Les lagunes du Languedoc-Roussillon sont étudiées depuis plusieurs années par le laboratoire Ifremer de Sète dans le cadre du RSL (Réseau de Suivi Lagunaire; http://rsl.cepralmar.com). Plusieurs compartiments (chimique et biologique) sont suivis pour étudier la principale pression qui s’exerce sur les lagunes : l’eutrophisation. Les peuplements de macrophytes présents dans les lagunes sont un bon indicateur de la qualité du milieu vis à vis de l’eutrophisation. Une méthode de suivi par les macrophytes est développée, qui nécessite la reconnaissance des espèces. Le guide de reconnaissance des macrophytes, destiné aux techniciens et aux... |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00015/12666/9556.pdf |
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| Registros recuperados: 38 | |
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