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210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea) ArchiMer
Strady, Emilie; Harmelin-vivien, Mireille; Chiffoleau, Jean-francois; Veron, Alain; Tronczynski, Jacek; Radakovitch, Olivier.
The transfer of 210Po and 210Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210Po and 210Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210Po, 210Pb activity concentrations and 210Po/210Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is...
Tipo: Text Palavras-chave: Po-210; Pb-210; Phytoplankton; Zooplankton; Pelagic fishes; Mediterranean Sea.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00255/36609/35264.pdf
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42nd plenary meeting report of the Scientific, Technical and Economic Committee for Fisheries (PLEN-13-01). 8-12 April 2013, Brussels ArchiMer
STECF.
The Scientific, Technical and Economic Committee for Fisheries hold its 42nd plenary on 8-12 April 2013 in Brussels (Belgium). The terms of reference included both issues assessments of STECF Expert Working Group reports and additional requests submitted to the STECF by the Commission. Topics dealt were inter alia assessments of Mediterranean Sea stocks, future EU data collection, and technical measures
Tipo: Text Palavras-chave: Fisheries policy; EC technical committee; Data collection; Conservation of fish stocks; Structural adjustment; Mediterranean Sea; Research report.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00165/27671/25864.pdf
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A 130,000-year record of Levantine Intermediate Water flow variability in the Corsica Trough, western Mediterranean Sea ArchiMer
Toucanne, Samuel; Jouet, Gwenael; Ducassou, Emmanuelle; Bassetti, Maria-angela; Dennielou, Bernard; Minto'O, Charlie Morelle Angue; Lahmi, Marjolaine; Touyet, Nicolas; Charlier, Karine; Lericolais, Gilles; Mulder, Thierry.
Sortable silt particle-size data and stable isotope analyses from the Corsica Trough, western Mediterranean Sea, provide a continuous palaeoceanographic record of the inflow, ventilation and vertical fluctuations of the Levantine Intermediate Water (LIW) in the northern Tyrrhenian Sea for the last 130,000 years. The results presented herein reveal that climate changes drive the Mediterranean intermediate circulation on Milankovitch to millennial time-scales. Intensified intermediate inflow and ventilation in the Corsica Trough occurred throughout the last glacial interval, with a cold / faster – warm / slower pattern existing between the Dansgaard-Oeschger climatic oscillations (including Heinrich events) and the LIW variability. By contrast, a weak...
Tipo: Text Palavras-chave: Levantine Intermediate Water; Mediterranean Sea; Thermohaline circulation; Palaeoceanography.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00054/16506/14023.pdf
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A new potentially toxic Azadinium species (Dinophyceae) from the Mediterranean Sea, A. dexteroporum sp. nov. ArchiMer
Percopo, Isabella; Siano, Raffaele; Rossi, Rachele; Soprano, Vittorio; Sarno, Diana; Zingone, Adriana.
A new photosynthetic planktonic marine dinoflagellate, Azadinium dexteroporum sp. nov., is described from the Gulf of Naples (South Tyrrhenian Sea, Mediterranean Sea). The plate formula of the species, Po, cp, X, 4, 3a, 6, 6C, 5?S, 6'" and 2, is typical for this recently described genus. Azadinium dexteroporum is the smallest rep-resentative of the genus (8.5m average length, 6.2m average width) and shares the presence of a small antapical spine with the type species A.spinosum and with A.polongum. However, it differs from all other Azadinium species for the markedly asymmetrical Po plate and the position of the ventral pore, which is located at the right posterior end of the Po plate. Another peculiarity of A.dexteroporum is the pronounced concavity of...
Tipo: Text Palavras-chave: Azadinium; Azaspiracid; Dinoflagellate; LC; MS-TOF; LTER-MC; Mediterranean Sea; Phylogeny; Taxonomy.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00171/28199/27278.pdf
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Abondance et composition du phytoplancton sur les lagunes méditerranéennes oligo et mésohalines ArchiMer
Derolez, Valerie; Bec, Béatrice; Grillas, Patrice; Sanchez, Ana Elena; Raimbault, Patrick.
In the context of WFD implementation on Mediterranean lagoons, work has been carried out since 2010 by Ifremer, Tour du Valat and IRSTEA (Onema and AERM & C fundings), to assess the relevance of macrophytes and macrofauna indicators for oligohaline and mesohaline lagoons (mean salinity <18 PSU). The question of the relevance of indicator metrics and thresholds for the "phytoplankton" biological quality element also arises, especially due to the confined nature of olgo-mesohaline lagoons. The objective of this study is to characterize the abundance and composition of phytoplankton on 5 oligo and mesohaline lagoons of the French Mediterranean coast (Scamandre, Crey, Charnier, Bolmon and Grand Palun). Analyses of accessory pigments (chlorophyll and...
Tipo: Text Palavras-chave: Lagunes; Méditerranée; Oligohalin; Mésohalin; Phytoplancton; Cytométrie; Pigments chlorophylliens; Lagoons; Mediterranean Sea; Oligohaline; Mesohaline; Phytoplankton; Cytometry; Chlorophyll pigments..
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00357/46816/46682.pdf
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ACTION RECOPLA - Inventaire et bancarisation des données de Géosciences Marines pour les façades Atlantique, Manche et Méditerranée ArchiMer
Gautier, Emeric; Kerjean, Mathieu; Satra Le Bris, Catherine; Bourillet, Jean-francois.
This report presents the inventory work realized for all the Marine Geoscience dept data acquired on the French continental shelf. It lists the bathymetric, seismic and backscattering data acquired, processed and interpreted in English Channel, Atlantic and Mediterranean. All the maps used for this inventory are available within the GIS "Manche Atlantique" and "Golfe du Lion".
Tipo: Text Palavras-chave: Inventaire; SIG; Manche; Atlantique; Méditerranée; Bathymétrie; Imagerie acoustique; Sismique; Données brutes; Traitées; Interprétées; GeoBIS; Inventory; GIS; Englsih Channel; Atlantic; Mediterranean Sea; Backscatter; Seismic; Raw; Processed; Interpreted data; GeoBIS.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00014/12558/9426.pdf
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Active biomonitoring in Greek coastal waters: Application of the integrated biomarker response index in relation to contaminant levels in caged mussels ArchiMer
Tsangaris, Catherine; Hatzianestis, Ioannis; Catsiki, Vassiliki-angelique; Kormas, Konstantinos Ar; Strogyloudi, Evangelia; Neofitou, Christos; Andral, Bruno; Galgani, Francois.
An integrated approach using biomarkers and contaminant levels in mussels Mytilus galloprovincialis L was employed to assess chemical contamination in Greek coastal waters within the framework of the MYTIMED program. Biomarkers (metallothioneins, glutathione S-transferase, catalase, acetylcholinesterase and RNA:DNA ratio) have been previously described in mussels caged at 14 sites in coastal areas influenced by different types of anthropogenic activities. This study applied a biomarker index, the Integrated Biomarker Response (IBR) to summarize biomarker responses and relate stress levels to concentrations of organochlorine compounds (PCBs, DDTs), polycyclic aromatic hydrocarbons (PAHs), and metals (Cu, Ni, Fe, Zn) measured in the mussel tissues. The IBR...
Tipo: Text Palavras-chave: Pollution; Biomarkers; Monitoring; Mussel caging; Mytilus galloprovincialis; Mediterranean Sea.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00059/17033/14718.pdf
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Adding new pieces to the Azadinium (Dinophyceae) diversity and biogeography puzzle: Non-toxigenic Azadinium zhuanum sp. nov. from China, toxigenic A. poporum from the Mediterranean, and a non-toxigenic A. dalianense from the French Atlantic ArchiMer
Luo, Zhaohe; Krock, Bernd; Mertens, Kenneth; Nezan, Elisabeth; Chomerat, Nicolas; Bilien, Gwenael; Tillmann, Urban; Gu, Haifeng.
The marine planktonic dinophyceaen genus Azadinium is a primary source of azaspiracids, but due to their small size its diversity may be underestimated and information on its biogeography is still limited. A new Azadinium species, A. zhuanum was obtained from the East China Sea and Yellow Sea of China by incubating surface sediments. Five strains were established by isolating single germinated cells and their morphology was examined with light microscopy and scanning electron microscopy. Azadinium zhuanum was characterized by a plate pattern of Po, cp, X, 4′, 2a, 6′′, 6C, 5S, 6′′′, 2′′′′, by a distinct ventral pore at the junction of Po, the first and fourth apical plates, and a conspicuous antapical spine. Moreover, Azadinium poporum was obtained for the...
Tipo: Text Palavras-chave: Azadinium; Azaspiracid; AZA-2; AZA-2 phosphate; Biogeography; China; French Atlantic; Mediterranean Sea.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00386/49765/51155.pdf
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Aerial surveys to monitor bluefin tuna abundance and track efficiency of management measures ArchiMer
Bauer, Robert; Bonhommeau, Sylvain; Brisset, Blandine; Fromentin, Jean-marc.
Conservation and management measures for exploited fish species rely on our ability to monitor variations in population abundance. In the case of the eastern stock of Atlantic bluefin tuna (ABFT), recent changes in management policies have strongly affected the reliability of fishery-dependent indicators due to drastic changes in fishing season/area, fisheries selectivity and strategy. However, fishery-independent indices of abundance are rare for large pelagic fish, and obtaining them is often costly and labor intensive. Here, we show that scientific aerial surveys are an appropriate tool for monitoring juvenile bluefin tuna abundance in the Mediterranean. We present an abundance index based on 62 aerial surveys conducted since 2000, using 2 statistical...
Tipo: Text Palavras-chave: Thunnus thynnus; Index of abundance; Fishery-independent; Gulf of Lions; Mediterranean Sea; Strip transect; Distance sampling.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00281/39192/45096.pdf
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Age and growth of the striped seabream, Lithognathus mormyrus (Actinopterygii: Perciformes: Sparidae), in the central coast of Algeria, Mediterranean Sea ArchiMer
Boufersaoui, Samira; Kassar, Abderrahmane; Mokrane, Zakia; Elleboode, Romain; Mahe, Kelig.
Background. Striped seabream, Lithognathus mormyrus (Linnaeus, 1758), is a bony fish, which has a high economic value on the Algerian coast. Because of the increasing fishing pressure, however, a close monitoring is recommended. The information about the biology of this species, occurring in the south-western Mediterranean Sea and especially in the north African coast, is very limited. The presently reported study provides new estimated data on age and growth parameters of striped seabream in Algeria. Materials and methods. A total of 449 specimens of L. mormyrus were sampled for 2 years (January 2013 to December 2014) from the commercial fishery in the central part of the Algerian coast. The samples were collected monthly. The fish ranged in size from...
Tipo: Text Palavras-chave: Lithognathus mormyrus; Otolith; Age; Growth; Algerian coast; Mediterranean Sea.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00473/58448/61028.pdf
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Age, growth and mortality of Sciaena umbra (Sciaenidae) in the Gulf of Tunis ArchiMer
Chater, Ines; Romdhani-dhahri, Ahlem; Dufour, Jean-louis; Mahe, Kelig; Chakroun-marzouk, Nadia.
The growth and mortality of the brown meagre, Sciaena umbra from the Gulf of Tunis, were investigated using a sample of 276 specimens, ranging from 15.3 to 49.2 cm total length and from 43 to 1565 g total weight. Specimens were collected from artisanal fisheries between October 2008 and September 2011. Otoliths were extracted, thin cross-sections were realized and radii were measured. The log-linear morphometric relationships between total length-total weight and total length-otolith radius were significant (p < 0.05), showed positive allometry (b=3.15) and isometry (b=0.90), respectively. The marginal analysis suggested that only one growth increment was deposited per year. The maximum age of the brown meagre was 22 years for males and 31 years for...
Tipo: Text Palavras-chave: Brown meagre; Thin otoliths; Growth; Mortality; Gulf of Tunis; Mediterranean Sea.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00424/53552/54415.pdf
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An End-to-End Model Reveals Losers and Winners in a Warming Mediterranean Sea ArchiMer
Moullec, Fabien; Barrier, Nicolas; Drira, Sabrine; Guilhaumon, François; Marsaleix, Patrick; Somot, Samuel; Ulses, Caroline; Velez, Laure; Shin, Yunne-jai.
The Mediterranean Sea is now recognized as a hotspot of global change, ranking among the fastest warming ocean regions. In order to project future plausible scenarios of marine biodiversity at the scale of the whole Mediterranean basin, the current challenge is to develop an explicit representation of the multispecies spatial dynamics under the combined influence of fishing pressure and climate change. Notwithstanding the advanced state-of-the-art modeling of food webs in the region, no previous studies have projected the consequences of climate change on marine ecosystems in an integrated way, considering changes in ocean dynamics, in phyto- and zoo-plankton productions, shifts in Mediterranean species distributions and their trophic interactions at the...
Tipo: Text Palavras-chave: Biodiversity scenario; Climate change; Ecosystem model; End-to-end model; OSMOSE; Fishing; Mediterranean Sea.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00504/61557/65469.pdf
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An evaluation of surface micro- and mesoplastic pollution in pelagic ecosystems of the Western Mediterranean Sea ArchiMer
Faur, Florian; Saini, Camille; Potter, Gael; Galgani, Francois; De Alencastro, Luiz Felippe; Hagmann, Pascal.
This study examines the distribution, abundance and characteristics of surface micro- and mesoplastic debris in the Western Mediterranean Sea. 41 samples were collected in 2011 (summer) and 2012 (summer). Results, firstly, revealed that micro- (<5mm) and mesoplastic debris were widely and uniformly distributed in this area with average concentrations of 130,000 parts/km(2) and 5700 parts/km(2), respectively. Importantly, a strong correlation between micro- and mesoplastic concentrations was identified. Secondly, a classification based on the shape and appearance of microplastics indicated the predominant presence of fragments (73 %) followed by thin films (14 %). Thirdly, the average mass ratio of microplastic to dry organic matter has been measured at...
Tipo: Text Palavras-chave: Plastic debris; Marine pollution; Mediterranean Sea; Surface net tow; Microplastic pollution; Neustonic plastic.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00275/38629/37311.pdf
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An integrated system for managing multidisciplinary oceanographic data collected in the Mediterranean Sea during the basin-scale research project EU/MAST-MATER (1996-2000) ArchiMer
Maillard, Catherine; Balopoulos, E; Giorgetti, A; Fichaut, Michele; Iona, A; Larour, Michel; Latrouite, Armelle; Manca, B; Maudire, Gilbert; Nicolas, P; Sanchez Cabeza, J.
An advanced computer and communication technology was used to develop an integrated system and software tools for managing a great diversity of oceanographic data collected in the Mediterranean Sea during 1996-2000. Data were obtained during 108 sea cruises, carried out within the framework of the large-scale international research project MATER (mass transfer and ecosystem response), which was financially supported by the Marine Science and Technology (MAST) Programme of the European Union (EU). Data collection involved the active participation of various research vessels and personnel coming from 58 different laboratories of 13 countries. Data formatting as well as automatic and visual data quality controls were implemented using internationally accepted...
Tipo: Text Palavras-chave: Data product; Quality assurance; Data management; Ocean data; Mediterranean Sea.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-489.pdf
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An underwater tracking system for mapping marine communities: an application to Posidonia oceanica ArchiMer
Sgorbini, S; Peirano, A; Cocito, S; Morgigni, M.
The GPS intelligent buoy is a pot-table underwater tracking system consisting of four buoys and one pinger. The pinger was mounted on an underwater vehicle driven by a Scuba diver and used to map the limits of a Posidonia oceanica meadow. To test the accuracy of the method the system was tried out on different types of limits and on healthy and regressed part of the meadow from 2 to 25 m of depth. The time of track acquisition (1 point per second), the recording speed (1 km h(-1)) and the mapping scale (more than 1:500) indicated that the proposed method may be successfully integrated with conventional systems for mapping marine communities. (C) 2002 Ifremer/CNRS/IRD/Editions scientifiques et medicales Elsevier SAS. All rights reserved.
Tipo: Text Palavras-chave: Cartographie; Phanérogames marines; Posidonia oceanica; Méditerranée; Mapping; Seagass; Posidonia oceanica; Mediterranean Sea.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43314/42940.pdf
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Anatomy of a compound delta from the post-glacial transgressive record in the Adriatic Sea ArchiMer
Pellegrini, Claudio; Maselli, Vittorio; Cattaneo, Antonio; Piva, Andrea; Ceregato, Alessandro; Trincardi, Fabio.
On the Mediterranean continental shelves the post-glacial transgressive succession is a complex picture composed by seaward progradations, related to sea level stillstands and/or increased sediment supply to the coasts, and minor flooding surfaces, associated to phases of enhanced rates of sea level rise. Among Late Pleistocene examples, major mid-shelf progradations have been related to the short-term climatic reversal of the Younger Dryas event, a period during which the combination of increased sediment supply from rivers and reduced rates of sea level rise promoted the formation of progradations up to tens-meter thick. While the documentation of coastal and subaqueous progradations recording the Younger Dryas interval are widely reported in the...
Tipo: Text Palavras-chave: Compound delta; Mediterranean Sea; Younger Dryas; Subaqueous clinoform; Transgressive deposits.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00250/36158/34714.pdf
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Annual variation in neustonic micro- and meso-plastic particles and zooplankton in the Bay of Calvi (Mediterranean–Corsica) ArchiMer
Collignon, Amandine; Hecq, Jean-henri; Galgani, Francois; Collard, France; Goffart, Anne.
The annual variation in neustonic plastic particles and zooplankton was studied in the Bay of Calvi (Corsica) between 30 August 2011 and 7 August 2012. Plastic particles were classified into three size classes, small microplastics (0.2–2 mm), large microplastics (2–5 mm) and mesoplastics (5–10 mm). 74% of the 38 samples contained plastic particles of varying composition: e.g. filaments, polystyrene, thin plastic films. An average concentration of 6.2 particles/100 m2 was observed. The highest abundance values (69 particles/100 m2) observed occurred during periods of low offshore wind conditions. These values rose in the same order of magnitude as in previous studies in the North Western Mediterranean. The relationships between the abundance values of the...
Tipo: Text Palavras-chave: Microplastic particles; Mesoplastic particles; Neuston; Mediterranean Sea.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00169/28064/27275.pdf
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Assessment of contaminant concentrations in sediments, fish and mussels sampled from the North Atlantic and European regional seas within the ICON project ArchiMer
Robinson, Craig D.; Webster, Lynda; Martinez-gomez, Concepcion; Burgeot, Thierry; Gubbins, Matthew J.; Thain, John E.; Vethaak, A. Dick; Mcintosh, Alistair D.; Hylland, Ketil.
Understanding the status of contaminants in the marine environment is a requirement of European Union Directives and the Regional Seas Conventions, so that measures to reduce pollution can be identified and their efficacy assessed. The international ICON workshop (Hylland et al., in this issue) was developed in order to test an integrated approach to assessing both contaminant concentrations and their effects. This paper describes and assesses the concentrations of trace metals, polycyclic aromatic hydrocarbons, and polychlorinated biphenyls in sediments, mussels, and fish collected from estuarine, coastal and offshore waters from Iceland to the Mediterranean Sea. For organic contaminants, concentrations progressively increased from Iceland, to the...
Tipo: Text Palavras-chave: Integrated assessment; ICES; North Atlantic; North Sea; Baltic Sea; Mediterranean Sea; Polycyclic aromatic hydrocarbons (PAHs); Polychlorinated biphenyls (PCBs); Trace metals; Environmental monitoring.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00324/43520/43051.pdf
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Assessment of polycyclic aromatic hydrocarbon concentrations in mussels (Mytilus galloprovincialis) from the Western basin of the Mediterranean Sea ArchiMer
Galgani, Francois; Martinez-gomez, Conception; Giovanardi, Franco; Romanelli, Giulia; Caixach, Josep; Cento, Alessandro; Scarpato, Alfonso; Benbrahim, Samir; Messaoudi, Sabri; Deudero, Salud; Boulahdid, Mostafa; Benedicto, Jose; Andral, Bruno.
The Mytilos project was carried during the last 3 years (2004-2006) in order to evaluate the level of chemical contamination along the coasts of the western basin of the Mediterranean Sea. Active mussel watch consisted of caged (12 weeks) Mytilus galloprovincialis at 123 stations along the Mediterranean coasts of Spain, France, Italy, North Tunisia, Algeria and Morocco. Results indicated total PAHs levels in the range 22-106 mu g/kg dry weight. All large towns or industrial areas from all countries of the basin were affected. Analysis of the origin of contamination demonstrated mainly a pyrolytic origin except in some areas such as Maddalena, Napoli, Alger, and Cornigliano (Genova). Statistical analysis of the PAHs accumulation data enabled the...
Tipo: Text Palavras-chave: PAHs; Mediterranean Sea; Mytilus galloprovincialis; Caging; Monitoring.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00021/13189/10274.pdf
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Assessment of the ecological status of Mediterranean French coastal waters as required by the Water Framework Directive using the Posidonia oceanica Rapid Easy Index: PREI ArchiMer
Gobert, Sylvie; Sartoretto, Stephane; Rico-raimondino, Valerie; Andral, Bruno; Chery, Aurelia; Lejeune, Pierre; Boissery, Pierre.
This paper describes the PREI (Posidonia oceanica Rapid Easy Index), a method used to assess the ecological status of seawater along Mediterranean French coasts. The PREI was drawn up according to the requirements of the Water Framework Directive (WFD 2000/60/EC) and was tested on 24 and 18 stations in PACA (Provence-Alpes-Cotes d'Azur) and Corsica, respectively. The PREI is based on five metrics: shoot density, shoot leaf surface area, E/L ratio (epiphytic biomass/leaf biomass), depth of lower limit, and type of this lower limit. The 42 studied stations were classified in the first four levels of status: high, good, moderate and poor. The PREI values ranged between 0.280 and 0.847; this classification is in accordance with our field knowledge and with our...
Tipo: Text Palavras-chave: Water Frame Directive; Ecological Quality Ratio; Coastal water; Mediterranean Sea; Posidonia oceanica; Seagrass.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6949.pdf
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