Atlantic Fisheries Research Document 1996/060

Estimation géostatistique de la production quotidienne d'oeufs chez le maquereau bleu (Scomber scombrus L.) du golfe du Saint-Laurent

By F. Grégoire; C. Bellehumeur

Abstract

The geostatistical approach was used on an exploratory basis to estimate the daily egg production for the Gulf of St. Lawrence mackerel. The variograms for the eggs densities in direction North-South and East West clearly show that the data are spatially autocorrelated. The variograms also reveal a well-defined spatial structure and a relatively low nugget effect in comparison with the variance of the data. The daily egg production was evaluated at 2.2561 • 10¹³ with lower and upper limits of 1.9438 • 10¹³ and 2.5683 • 10¹³ respectively. This estimation is improved in comparison with the estimations given by the classic statistical methods.

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