Resumen
The material analysed here is part of a collection made with a 91 van Dorn bottle in a 5 m depth station at Ubatuba - São Paulo, between June 1976 and May 1977. Two sets of general linear models were constructed, one for the winter months (June, July and August) and the other for the summer ones (December, January and February). In each set, copepodid stages and adults were studied separately, in relation to hour of sampling, depth, interaction hour-depth, and environmental factors (light penetration, dissolved oxygen, salinity and temperature, considered as a whole). All the stages studied were spread in the water column and show no vertical migration. The hour was not significant for any stage except for copepodid V female in winter. This results agree with a previous analysis of the same material performed with the data of each two months throughout the year (Milstein, 1978).
ARTIGOS
Un nuevo analisis de la distribucion vertical de Paracalanus crassirostris (Copepoda Calanoidea) mediante el modelo linear general (Omega)
Ana Milstein
Museo Nacional de Historia Natural, Montevideo, Uruguay
SYNOPSIS
The material analysed here is part of a collection made with a 91 van Dorn bottle in a 5 m depth station at Ubatuba - São Paulo, between June 1976 and May 1977. Two sets of general linear models were constructed, one for the winter months (June, July and August) and the other for the summer ones (December, January and February). In each set, copepodid stages and adults were studied separately, in relation to hour of sampling, depth, interaction hour-depth, and environmental factors (light penetration, dissolved oxygen, salinity and temperature, considered as a whole). All the stages studied were spread in the water column and show no vertical migration. The hour was not significant for any stage except for copepodid V female in winter. This results agree with a previous analysis of the same material performed with the data of each two months throughout the year (Milstein, 1978).
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Agradecimientos
Agradezco a la Dra. M. Scintila de Almeida Prado por la orientación en el programa de muestreo y por el uso de equipos e instalaciones del Instituto Oceanógrafico de la Universidad de San Pablo.
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- ______ 1971. Analysis of species densities by the multivariate general linear model. Limnol. Oceanogr., 16:667-670.
- MILSTEIN L., A.R. 1978. Distribuição vertical de Paracalanus crassirostris (Copepoda Calanoidea). Análise mediante um modelo linear. Dissertação de Mestrado. Universidade de São Paulo, Instituto Oceanográfico. 35p. (en inglês: Bolm Inst, oceanogr., S Paulo, 1979,28(2):65-78.
- SEAL, H. L. 1964. Multivariate statistical analysis for biologists. London, Mathuen, 207p.
- TEIXEIRA, C. 1973. Preliminary studies of primary production in the Ubatuba region (Lat. 25ş30'S - Long. 45ş06'W, Brazil. Bolm Inst, oceanogr., S Paulo, 22:49-58.
Fechas de Publicación
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Publicación en esta colección
06 Jun 2012 -
Fecha del número
1980
