Technical Performance and Productive Dynamics in Angolan Maritime Fisheries: An Intertemporal DEA-VRS Approach
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Abstract
The study aims to evaluate the trend of relative technical efficiency within the context of the optimization of productive resources of the seven Decision Making Units. The study encompasses the seven provinces of the Angolan coast. The Data Envelopment Analysis (Variables Returns to Scale model), with an input-oriented approach, was used, adapted to the Angolan production context, which is marked by financial constraints and exchange rate instability. The results show an upward trajectory of mean efficiency across the five analysis windows used, with a moderate positive trend. The results also revealed that intertemporal factors explain, in a differentiated way, a relevant part of the variation in the technical efficiency of the provinces, highlighting Cabinda, Zaire, Bengo, and Kwanza Sul, which showed upward evolution, and, on the other hand, Luanda, Benguela, and Namibe, which showed low performance or decline. Between 2016 and 2023, no province showed full technical efficiency, highlighting gaps in the optimization of available resources. The total fish catch load was a more critical variable, registering high levels of pure technical inefficiency, requiring a sustainable increase in production at the sectoral level. The absence of previous studies on technical efficiency in the Angolan fishing sector reinforces the pioneering nature of this research, which can serve as a basis for future investigations and the formulation of public policies.
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