Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 2
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Analyse statistique de l'évolution temporelle de paramètres hydrobiologiques dans les bassins du port du Havre ArchiMer
Menesguen, Alain; Laurec, Alain.
The study of the spatial structure and temporal evolution of several hydrobiological parameters in a flooding docks system provided a good illustration for the analytical power of a methodology dealing with the statistical processing of multivariate timeseries. This technique can be characterized by prior extraction of the trends, treated separately as ordinary multivariate data, and by a consequent multi-spectral analysis of the residual signais. This procedure offers the advantage of clarifying the analysis of the major features of the phenomenon (i.e. the trends) and unmasking the subtle spatio-temporal structure through the residual signais. The application on Le Havre harbour showed a strong enrichment in nutrients and also a plausible but partial...
Tipo: Text Palavras-chave: Analyse spectrale; Désaisonnalisation; Séries temporelles multivariées; Eutrophisation; Spectral analysis; Deseasonalisation; Multivariate time-series; Nutrient enrichment.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/00113/22466/20147.pdf
Imagem não selecionada

Imprime registro no formato completo
Contribution à l'étude du stock de lottes (Lophius piscatrorius L. 1758 et L. budegassa, Spinola 1807) du plateau celtique ArchiMer
Gaertner, Daniel.
A multiplication model, fitted by weighted least squares, is used to determine factors affecting monthly c.p.u.e. of monk (anglerfish). These include annual indices of abundance, from which concentration indices may be calculated; seasonal factors at different depths; and relative fishing power. A steep increase in the total annual index of abundance may be partially explained by the simultaneous increase of the smallest fishes index. The increased concentration index of this commercial category is probably due to a decrease of discards; as suggested by severa! authors, however, climatic changes may also account for increased biomass of the species considered.
Tipo: Text Palavras-chave: Lophiidae; C.p.u.e.; Désaisonnalisation; Plateau celtique; Lophiidae; C.p.u.e.; De-seasonalizing; Celtic plateau.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/00113/22456/20143.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

Valid HTML 4.01 Transitional