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	Provedor de dados ArchiMer (4) Autor Juniper, Sk (4) Sarrazin, Jozee (4) Delaney, Jr (1) Grehan, A (1) Legendre, P (1) Massoth, G (1) Robigou, V (1) Mais... Palavra-chave Juan de Fuca Ridge (2) Sulfide edifice (2) Assemblage characteristics (1) Biological succession (1) Biomass (1) Community structure (1) Disturbances (1) Ecological model (1) Endeavour segment (1) Faunal succession (1) Flow patterns (1) Fluid flow (1) Habitat characterization (1) Hydrothermal ecology (1) Hydrothermal vent ecology (1) Image analysis (1) In situ measurements (1) Marine ecosystem biomass (1) Mosaic habitat (1) Physical and chemical factors (1) Mais... Tipo do documento Text (4) Ano 1999 (2) 1998 (1) 1997 (1) País France (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Biological and geological dynamics over four years on a high-temperature sulfide structure at the Juan de Fuca Ridge hydrothermal observatory ArchiMer Sarrazin, Jozee; Robigou, V; Juniper, Sk; Delaney, Jr. An extensive videoscopic study of a high-temperature sulfide structure on the Juan de Fuca Ridge (northeast Pacific) examined temporal variation in vent community distribution and Links between faunal and environmental changes. Video imagery was acquired during a total of 5 manned submersible and ROV (remotely-operated vehicle) dive programs between 1991 and 1995. The structure was systematically mapped for each year of the study and a series of analytical tools was developed to quantify changes in biological and geological features and observable flow patterns. Results show: (1) heterogeneous faunal distribution characterized by decimeter-scale patchiness and general absence of vertical gradients; (2) apparent Links between community distribution, and... Tipo: Text Palavras-chave: Hydrothermal ecology; Community structure; Spatio-temporal distribution; Flow patterns; Biological succession; Disturbances; Juan de Fuca Ridge; Endeavour segment. Ano: 1997 URL: http://archimer.ifremer.fr/doc/00280/39117/37670.pdf Biological characteristics of a hydrothermal edifice mosaic community ArchiMer Sarrazin, Jozee; Juniper, Sk. This study defines the composition and biomass characteristics of 5 of 6 previously described faunal assemblages that form a mosaic community on hydrothermal sulfide edifices of the Juan de Fuca Ridge (northeast Pacific). Quantitative samples of each assemblage were acquired during 'ROPOS' Remote Operated Vehicle (ROV) dive programs in 1994 and 1996. Total abundance, and species richness, as well as wet and dry weights, were calculated for each assemblage, and sampled surface area was measured directly or from scaled images of sample scars. These data were used to compare species composition, richness and biomass of the distinct assemblages and to estimate total biomass of a sulfide edifice. In addition to major compositional differences, we observed an... Tipo: Text Palavras-chave: Vent ecology; Biomass; Faunal succession; Sulfide edifice; Assemblage characteristics; Image analysis; Juan de Fuca Ridge; Ecological model; Marine ecosystem biomass. Ano: 1999 URL: http://archimer.ifremer.fr/doc/00280/39114/37667.pdf Physical and chemical factors influencing species distributions on hydrothermal sulfide edifices of the Juan de Fuca Ridge, northeast Pacific ArchiMer Sarrazin, Jozee; Juniper, Sk; Massoth, G; Legendre, P. This study examines relationships between hydrothermal vent species and their surrounding physical and chemical environment on 2 high-temperature sulfide edifices of the Juan de Fuca Ridge (northeast Pacific). Video imagery and in situ temperature and chemical information were acquired during 2 remotely operated vehicle (ROV) dive programs in 1993 and 1995, for a total of 78 scans. Statistical analyses of environmental and faunal data reveal a heterogeneous distribution (cor respondence analyses) of hydrothermal species and demonstrate a significant influence of local physical and chemical conditions on species distributions (canonical correspondence analyses). Results confirm the importance of hydrogen sulfide to the distribution of vent species as well... Tipo: Text Palavras-chave: Hydrothermal vent ecology; Physical and chemical factors; In situ measurements; Habitat characterization; Species distribution; Sulfide edifice; Statistical analyses; Fluid flow; Substratum types; Mosaic habitat. Ano: 1999 URL: http://archimer.ifremer.fr/doc/00280/39113/37666.pdf Remote sensing of organism density and biomass at hydrothermal vents ArchiMer Juniper, Sk; Sarrazin, Jozee; Grehan, A. Tipo: Text Ano: 1998 URL: http://archimer.ifremer.fr/doc/00280/39115/37668.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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