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| Registros recuperados: 14 | |
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| Fauconnet, Laurence; Trenkel, Verena M.; Morandeau, Gilles; Caill-milly, Nathalie; Rochet, Marie-joelle. |
| To implement an ecosystem approach to fisheries management, there is a need to characterize the total pressure exerted by fisheries at the community level. French onboard observer data were used to derive catch metrics and compare fishing distribution across community components between two sites in the Southern Bay of Biscay. Sample-based rarefaction curves were used to standardize metrics across different active and passive gears, and correct for sample size differences. Six metrics for species, length and functional catch composition were tested. Length and functional metrics were found the most relevant metrics to highlight differences in catches between gears, sites, and gear-site interactions. Significant differences were found between gears, mainly... |
| Tipo: Text |
Palavras-chave: Catch diversity; Gear comparison; Multivariate analyses; Southern Bay of Biscay. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00248/35882/34468.pdf |
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| Ghiglione, J. F.; Palacios, C.; Marty, J. C.; Mevel, G.; Labrune, C.; Conan, P.; Pujo-pay, M.; Garcia, N.; Goutx, M.. |
| Bacterioplankton plays a central role in energy and matter fluxes in the sea, yet the factors that constrain its variation in marine systems are still poorly understood. Here we use the explanatory power of direct multivariate gradient analysis to evaluate the driving forces exerted by environmental parameters on bacterial community distribution in the water column. We gathered and analysed data from a one month sampling period from the surface to 1000m depth at the JGOFS-DYFAMED station (NW Mediterranean Sea). This station is characterized by very poor horizontal advection currents which makes it an ideal model to test hypotheses on the causes of vertical stratification of bacterial communities. Capillary electrophoresis single strand conformation... |
| Tipo: Text |
Palavras-chave: Free living bacteria; Ribosomal RNA genes; Strand conformation polymorphism; Flame ionization detection; Dissolved organic carbon; 16S RDNA; Microbial diversity; Lipid classes; Phytoplankton dynamics; Multivariate analyses. |
| Ano: 2008 |
URL: https://archimer.ifremer.fr/doc/00208/31974/30409.pdf |
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| Holley, Jean-francois; Marchal, Paul. |
| A typology is presented for the French offshore fleet fishing in the North Atlantic. The investigation was carried out separately for all years between 1985 and 2002. Two methods were combined: PCA and cluster analysis. In 1985, most vessels targeted saithe off western Scotland (vessels from Lorient) and in the northern North Sea (vessels from Boulogne and Fecamp). Then, probably because of the decline in biomass of saithe, some vessels started to target deepwater species from the early 1990s. In 2002, some vessels fished exclusively for saithe (>80%), while others targeted mainly deepwater species. In all, 12 fisheries are identified for the period 1985-2002. Results are given of a preliminary investigation trying to identify the external factors... |
| Tipo: Text |
Palavras-chave: Saithe; Multivariate analyses; Mixed fisheries; Fishing strategy; Fisheries dynamics; Deepwater species. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-384.pdf |
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| Lopes,Ruy Bessa; Landell Filho,Luiz de Carvalho; Dias,Carlos Tadeu dos Santos. |
| Fee-fishing operations developed recently in Brazilian agricultural scenery in a rather disordered manner. This study, carried out at the northwest region of São Paulo State, Brazil, focuses on the productive performance of fee-fishing system. Several visits were made monthly to nine fee-fishing establishments, for six months. A questionnaire by owners targeting 13 indicators of the operation's productive performance. Data were submitted to multivariate analysis (MANOVA), principal component analysis (PCA) and cluster analysis. MANOVA indicated significant differences between the fee-fishing operations. The PCA analyses indicated, from the higher coefficient eigenvectors, three attributes for the lakes, such as productive system, fishery management and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Multivariate analyses; Productive system; Lakes. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000600013 |
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| Chiorato,Alisson Fernando; Carbonell,Sérgio Augusto Morais; Benchimol,Luciana Lasry; Chiavegato,Marilia Barbosa; Dias,Luiz Antonio dos Santos; Colombo,Carlos Augusto. |
| Germplasm banks store genotype samples, improved varieties, landraces and wild species, all generically denominated accessions. The importance of characterizing germplasm banks is based on the identification and knowledge of relevant traits for genetic improvement and ex situ germplasm conservation. Thus, the present study had as aim the evaluation of the genetic diversity among 220 accessions of a Brazilian common bean germplasm bank of the "Instituto Agronômico de Campinas" (IAC) by means of 23 morpho-agronomical descriptors and 19 RAPD loci. These accessions correspond to genotypes from the Andean and Middle American gene pool as well as from cultivars derived from common bean improvement programs. The Middle American accessions and the improved... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Germplasm bank; Botanical descriptors; Multivariate analyses. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300007 |
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| Registros recuperados: 14 | |
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