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Evaluation de la sensibilité des habitats benthiques de Méditerranée aux pressions physiques ArchiMer
La Riviere, M; Michez, M; Aish, A; Bellan-santini, D; Bellan, G; Chevaldonne, P; Dauvin, Jc; Derrien-courtel, S; Grall, J; Guerin, L; Janson, Al; Labrune, C; Sartoretto, Stephane; Thibaut, T; Thiebaut, E; Verlaque, M.
Le Ministère de l’Ecologie, de l’Energie et de la Mer a confié au Service du Patrimoine Naturel (Muséum National d’Histoire Naturelle), en lien étroit avec les acteurs de la recherche scientifique, la coordination d’un projet sur l’évaluation de la sensibilité des habitats benthiques aux pressions d’origine anthropique. L’objectif de ce travail est de qualifier la sensibilité générique des habitats présents en France métropolitaine pour aider à l’orientation et à la priorisation de mesures de gestion (pour des activités actuelles ou futures), adaptées aux enjeux de conservation, afin de respecter les objectifs d’atteinte ou de maintien d’un ECF (DCSMM) ou BEE (DHFF). Ce travail permet également de mettre en évidence les habitats et/ou les pressions pour...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00375/48662/49007.pdf
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Thermotolerance and the 'Pompeii worms' ArchiMer
Chevaldonne, P; Fisher, Cr; Childress, Jj; Desbruyeres, Daniel; Jollivet, D; Zal, F; Toulmond, A.
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Ano: 2000 URL: http://archimer.ifremer.fr/doc/00000/10405/7605.pdf
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Videoscopic study of deep-sea hydrothermal vent alvinellid polychaete populations: biomass estimation and behaviour ArchiMer
Chevaldonne, P; Jollivet, Didier.
Biomass is a poorly documented parameter of the hydrothermal ecosystem, partly due to the difficulties in estimating it. Because the hydrothermal alvinellid polychaete worms mostly live in tubes, and on very irregular surfaces difficult to sample, an original biomass estimation method based on video analysis was proposed and tested on populations of the East Pacific Rise at 13-degrees-N. The area covered by the 3 main alvinellid species was accurately estimated from geometrical calculations in oblique-angle conditions, requiring only 3 object measurements on the monitor screen. The total density of alvinellids was estimated on video by modelling the pattern of worm movements in and out of their tubes. The Richards function was found appropriate to model...
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Ano: 1993 URL: http://archimer.ifremer.fr/doc/00193/30395/29003.pdf
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