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The IV International Conference on Oil and Gas Depletion

The IV International Workshop on Oil and Gas Depletion, that is held at Gulbenkian Foundation in Lisbon on the 19th and 20th May, 2005, is the fourth annual meeting promoted by ASPO, the Association for the Study of Peak Oil and Gas, with the organizing support of Geophysics Centre of Évora. Previous meetings were held at the University of Uppsala in 2002, Institut Français du Pétrole, Paris in 2003, and Bundes...

Karyological study of cicindelidia trifasciata (coleoptera, cicindelidae) from ...

Metaphases from germinal tissue of eight males and seven females of Cicindelidia trifasciata from Cuba were analyzed. The species karyotype does not fit the pattern described for Nearctic cicindelids (2n = 18 + XXY): it has 11 autosome pairs and a sex chromosome system of the X1X2X3Y/ X1X1X2X2 X3X3 type, thus a diploid value of 2n = 26 in males and 2n = 28 in females. The first two autosome pairs were almost tw...

Feeding behaviour of Barbus Bocagei assessed under a spatio-temporal approach

The feeding behaviour of Barbus bocagei was assessed in a lowland system by a two years survey Of two contrasting sites also talking into account, for the first time diurnal changes of fish diet and benthos availability.

Riparian ecotones and spatial variation of fish assemblages in Portuguese lowla...

The first results of a long-term study on the role of riparian ecotones on the population and community dynamics of Iberian stream fish are presented and discussed . Riparian and macrophyte cover, bank slope and depth were among the most important variables affecting fish distribution . In general small fish favoured shallow areas with high macrophyte cover, whereas large fish dominated in deep areas with a hig...

Preliminary insight into age and growth of the Iberian chub (Leuciscus pyrenaic...

Destilador com Evaporação por Spray para Dessalinização de Água do Mar

O presente trabalho descreve um destilador para dessalinização de água do mar, em que a evaporação é efectuada através de um 'spray', com a finalidade de aumentar a produção diária de água. É apresentado o princípio de funcionamento do sistema, descrito o protótipo construído e apresentados e discutidos os resultados já obtidos durante os ensaios em laboratório. A produção aumenta com a temperatura, de uma form...

Régime alimentaire et croissance du barbeau iberique Barbus bocagei dans la rev...

Le barbeau ibérique Barbus bocagei est l’une des espèces les plus représentatives de l’icthyofaune de la rivière Sorraia (Bassin du fleuve Tejo). L’objectif de cette étude est de déterminer 1) les variations spatiales du régime alimentaire et de croissance linéaire de cette espèce entre différentes stations du sous-bassin de la Sorraia et 2) les variations de ces paramètres sur l’échelle temporelle dans deux ...