Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A step toward the definition of ecological indicators of the impact of fishing on the fish assemblage of the Abore reef reserve (New Caledonia) ArchiMer
Amand, Marion; Pelletier, Dominique; Ferrari, Jocelyne; Kulbicki, Michel.
Marine Protected Areas (MPA) are often contemplated as a tool for the sustainable management of exploited resources and ecosystem conservation. This paper proposes an approach to establish a statistical diagnostic of the effects of MPAs on fish assemblages, and define corresponding ecological indicators. This requires choosing relevant variables (abundance, diversity, demographic parameters..) and appropriate statistical methods. The study was based on data from the Abore reef Reserve in New Caledonia. Two sets of methods: 1-inferential linear models (ANOVA, GLM): 2- Partial Least Squares (PLS) methods of regression, were used to test the effects of this MPA. PLS enabled us to test simultaneously within a model, density, species richness, biomass and mean...
Tipo: Text Palavras-chave: New Caledonia; PLS regression; Ecological indicators; Fishing impact; Coral reef; Fish; Marine Protected Areas.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-398.pdf
Imagem não selecionada

Imprime registro no formato completo
EcoTroph: a simple model to assess fishery interactions and their impacts on ecosystems ArchiMer
Gasche, Loic; Gascuel, Didier.
The EcoTroph model leaves aside the notion of species, and models the functioning of marine ecosystems as flows of biomass from low to high trophic levels, so as to quantify easily the impacts of fishing at an ecosystem scale. In this paper, based on two case studies we present a new development of the EcoTroph model that is devoted to the analysis of fishery interactions and impacts of fleet segments on ecosystems. First, deriving an EcoTroph model from an Ecopath model of the Guinea ecosystem, the impacts of the artisanal fishery are distinguished from those of the industrial fishery. It appears that these fisheries do not always compete for the same fish groups but that they both strongly impact the ecosystem and moderately impact one another. Then, an...
Tipo: Text Palavras-chave: Ecopath; Ecosystem modelling; EcoTroph; Fishery interactions; Fishing impact; Guinea; Management scenario; Small pelagics; Southern Benguela.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00138/24970/23123.pdf
Imagem não selecionada

Imprime registro no formato completo
Evaluation of trawling disturbance on macrobenthic invertebrate communities in the Bay of Biscay, France: Abundance biomass comparison (ABC method) ArchiMer
Vergnon, Rémi; Blanchard, Fabian.
The necessity to move from a traditional fishery management to an ecosystem approach is now acknowledged. Indicators are required to support the development of this approach. For example, community indicators have been proposed to assess the impact of fishing. We tested here the applicability of one such community indicator, the abundance-biomass comparison (ABC method), as a measure of the impact of bottom trawling (years of sampling: 2001 and 2003) on the benthic invertebrates-typically starfishes, crabs, squat lobsters, shrimps and large hard-shelled molluscs-of "Grande Vasiere", a major French fishing zone, in the Bay of Biscay. The ABC method is generally used as an impact indicator for different types of physical, biological and anthropogenic...
Tipo: Text Palavras-chave: Atlantic Ocean; Inter annual variability; Density; Macrobenthos; ABC method; Fishing impact; Indicator; Bottom trawl survey.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2133.pdf
Imagem não selecionada

Imprime registro no formato completo
Fishing effects on the diversity dynamics of demersal fish communities. Comparative analysis of the role of the interactions between specices in the Bay of Biscay and in the Gulf of Lion (France). ArchiMer
Blanchard, Fabian.
This work deals with the fishing effects on the diversity dynamics of demersal fish communities, focusing on the biotic interactions. Multispecies indices were used in order to characterise the demersal fish community dynamics of the Bay of Biscay and of the Gulf of Lions. These are the diversity indices, the temporal variability of the total biomass and of the slope of the number size spectra and the slope of the species-area curves (spatial segregation). The data were provided by yearly bottom trawl surveys EVHOE, CHALIST and MEDITS carried out in these two areas since 1983 by IFREMER for stock assessment. The differences between areas are related to a fishing index (mean value of the annual landings of demersal fish per surface area). Other areas are...
Tipo: Text Palavras-chave: Demersal fish; ANE; Bay of Biscay; Gulf of Lions; Fish communities; Fishing impact; Biodiversity; Biotic interactions; Spatial segregation; Biomass variability; Size spectrum.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00000/10248/7688.pdf
Imagem não selecionada

Imprime registro no formato completo
Large-scale distribution of a deep-sea megafauna community along Mediterranean trawlable grounds ArchiMer
Fernandez-arcaya, Ulla; Bitetto, Isabella; Esteban, Antonio; Farriols, M. Teresa; García-ruiz, Cristina; Gil De Sola, Luis; Guijarro, Beatriz; Jadaud, Angelique; Kavadas, Stefanos; Lembo, Giuseppe; Milisenda, Giacomo; Maina, Irida; Petovic, Slavica; Sion, Letizia; Vaz, Sandrine; Massutí, Enric.
The large-scale distribution pattern of megafauna communities along the Mediterranean middle slope was explored. The study was conducted between 500 and 800 m depth where deep-water fishery occurs. Although community studies carried out deeper than 500 m are partly available for some geographic areas, few large-scale comparative studies have been carried out. Within the framework of the MEDITS survey programme, we compared the megafauna community structure in ten geographical sub-areas (GSAs) along the Mediterranean coasts. Additionally, the spatial distribution of fishing was analysed using vessel monitoring by satellite information. Overall, the community showed a significant difference between sub-areas, with a decreasing eastward pattern in abundance...
Tipo: Text Palavras-chave: Distribution pattern; Fishing impact; Continental slope; Deep sea; Megafauna; Red shrimp; Community.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00489/60051/63328.pdf
Registros recuperados: 5
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

Valid HTML 4.01 Transitional