Browsing by Subject "catch rates"

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    An indirect investigation of the possible influence of port on the estimation of observer effects on catch rates in the pelagic fishery
    (University of Cape Town, 2006) Somhlaba, S; Brandão, Anabela; Plagányi, Éva E; Butterworth, Doug S
    Earlier GLM analyses of catch per hour data for sardine and anchovy to determine observer effects have suggested statistically significant increases in this catch rate with observers on the vessels over January-to June for the sardine fishery, and over May to October for the anchovy fishery (Somhlaba et al. 2006). This in turn has raised the possibility that this may reflect (and provide quantification of the extent of) slippage in the catching operations conducted without observers present.