Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (2) Autor Juniper, Sk (2) Sarrazin, Jozee (2) Delaney, Jr (1) Robigou, V (1) Palavra-chave Juan de Fuca Ridge (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) Hydrothermal ecology (1) Image analysis (1) Marine ecosystem biomass (1) Spatio-temporal distribution (1) Sulfide edifice (1) Vent ecology (1) Mais... Tipo do documento Text (2) Ano 1999 (1) 1997 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última 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 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 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco