Measuring capacity and capacity utilization in fisheries: the case of the Danish Gill-net fleet
Abstract
Different measures of capacity and capacity utilization (CU) are estimated and examined for the multi-species Danish Gill-net fleet using a mathematical programming approach—data envelopment analysis (DEA). The potential capacity output is calculated using an output-orientated measure. CU is assessed using both a partial CU measure, which permits CU to be assessed relative to each output, and a ray measure. Based on the ray measure, the average CU for the Danish Gill-net fleet was estimated to be between 0.85 and 0.95. The partial CU measure for cod was determined to be approximately the same as the overall or ray CU measure, but the partial CU measure for plaice was less than the level of the ray measure, which indicated that the production of plaice could be increased by a higher proportion than could the production of cod. The optimal variable input utilization was also estimated. It was determined that, on average, the variable input—number of trips—could be increased by 27% compared to the optimal level. Results also indicated higher excess capacity for cod and sole than for other species, which is in accordance with how the fishery developed.
- Publication:
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Fisheries Research
- Pub Date:
- January 2003
- DOI:
- Bibcode:
- 2003FishR..60..357V
- Keywords:
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- Fleet capacity;
- Capacity utilization;
- Danish Gill-net fishery;
- Data envelopment analysis