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| Registros recuperados: 73 | |
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| De Casamajor, Marie-noelle; Mahias, Jeremy; Bru, Noelle; Caill-milly, Nathalie. |
| A spatial sampling was carried out for stock assessment of sea urchin P. lividus throughout the Basque coast. A sampling, over the year, was conducted to study the reproductive cycle. This work took place over 2013 and 2014. Reproduction occurs once in spring, between May and August 2014. Among factors affecting the release of eggs, salinity, temperature and hydrodynamics show a significant inter-annual variability in the Basque coast. Thus, the period set in 2014, may fluctuate between years. For the stock, the results showed that 11.85 (+/-0.32) million individuals of harvestable biomass for 724 tones (+/- 137). Stock is spread over the entire surveyed area density and biomass decrease rapidly with depth, individuals are mainly located between 0 and 5 m.... |
| Tipo: Text |
Palavras-chave: Oursin commun; Stock; Biomasse; Reproduction; Côte basque; Conditions environnementales; Sea urchin; Stock; Biomass; Reproduction; Basque coast; Environmental conditions. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00218/32889/31373.pdf |
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| Sanchez, Florence; De Casamajor, Marie-noelle; Lissardy, Muriel. |
| The new protocol, established by Auby et al. (2012) to the seagrass monitoring under the Water Framework Directive, was used in Txingudi bay (Hendaye, France). Based on 3 metrics ("taxonomy", "extension" and "density"), the quality index of the water body for the angiosperm indicator, was "medium", while it was in "good condition" in 2012. These results are explained by a sharp drop in the density observed on the monitoring station. The cartography of the species distribution showed a decrease of the total area of seagrass, particularly in the southern part of the mudflat. However, further north, small intertidal seagrass spots appeared. Atypical weather conditions in 2013 (cold, heavy spring rain) with silting of this area, could explain this situation. |
| Tipo: Text |
Palavras-chave: Herbier Zostera noltei; Directive Cadre sur l’eau; Côte basque; Baie de Txingudi; Hendaye; Seagrass Zostera noltei; Water Framework Directive; Basque country; Txingudi Bay; Hendaye. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00198/30965/29341.pdf |
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| Auby, Isabelle; Trut, Gilles; Rigouin, Loic; Oger-jeanneret, Helene; Sanchez, Florence; De Casamajor, Marie-noelle; Lamouroux, Mélina. |
| La Directive Cadre sur l’Eau 2000/60/CE établit un nouveau cadre pour une politique communautaire dans le domaine de l’eau. Elle fixe comme objectif général d’atteindre, à l’horizon 2015, un bon état écologique et chimique des masses d’eau souterraines et de surface, ces dernières incluant les eaux côtières (MEC) et les eaux de transition (MET). Dans ce cadre, un certain nombre d'éléments de qualité sont suivis, dont l'élément de qualité "Angiospermes" dans les masses d'eau où les herbiers de zostères sont présents. Ce rapport contient les résultats du suivi mis en oeuvre entre 2007 et 2013 et son classement écologique au sens de la DCE pour cet élément de qualité dans la masse d'eau « Lac d’Hossegor ». |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00195/30651/29119.pdf |
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| Regard, V.; De Casamajor, Marie-noelle; Maillet, G.; Prémaillon, M.; Caill-milly, Nathalie. |
| The French Basque Coast is an actively eroding rocky coast. In the study area it is made of flysch with a circa 40 degrees-dip; it is exposed to an average significant wave height of 1.8 m and peak period of 9.6 s. It is mesotidal (spring tide of ~4m). The current rocky shore platform is carved into the flysch layering. We focus on sea urchin Paracentrotus lividus contribution to rock shore erosion. Indeed, this sea urchin has a burrowing behaviour. An ecological study has been conducted for stock assessment, from shore to 10 m-deep. It indicates that sea urchins are burying their own shelter and are not reusing former ones. Below the depth of 10 m, sea urchins densities are very low and burial behavior is considered insignificant. Estimates of sea urchin... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00386/49700/50226.pdf |
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| Auby, Isabelle; D'Amico, Florence; Meteigner, Claire; Rumebe, Myriam; Tournaire, Marie-pierre; Rigouin, Loic; Gouriou, Laure; Lissardy, Muriel; Sanchez, Florence; De Casamajor, Marie-noelle; Morandeau, Gilles; Ganthy, Florian; Trut, Gilles; Trut, Florence; Caill-milly, Nathalie; Antajan, Elvire; Guesdon, Stephane; Chabirand, Jean-michel; Morin, Dimitri; Genauzeau, Sylvie; Piraud, Aude; Geairon, Philippe; Grizon, James; Seugnet, Jean-luc; Thomas, Gerard; Bruneau, Audrey; Soudant, Dominique; Gautier, Emeric; Michel, Valérie; Dupin, Michel. |
| Ce rapport rend compte des résultats sur les paramètres hydrologiques et le phytoplancton acquis dans le cadre de la DCE (contrôle de surveillance entre 2014 et 2019), dans les masses d’eau côtières et de transition du bassin Adour-Garonne |
| Tipo: Text |
Palavras-chave: Directive Cadre sur l’Eau; Hydrologie; Phytoplancton. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00653/76529/77618.pdf |
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| Oger-jeanneret, Helene; Trut, Gilles; Ganthy, Florian; Sauriau, Pierre-guy; Budzinski, Hélène; Gonzalez, Patrice; Gamain, Perrine; Maury-brachet, Régine; Feurtet-mazel, Agnès; Auby, Isabelle; Dalloyau, Sébastien; Rollet, Claire; De Casamajor, Marie-noelle; Sanchez, Florence; Rigouin, Loic; Fortune, Mireille; Lejolivet, Aurore; Thevand, Adeline; Grall, Jacques; Hily, Christian; Lamouroux, Mélina; Fera, Philippe. |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00310/42085/41387.pdf |
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| Registros recuperados: 73 | |
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