Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Applying Fishing-gear Simulation Software to Better Estimate Fished Space as Fishing Effort

  • Lee, Ji-Hoon (Institute of Low-Carbon Marine Production Technology, Pukyong National University) ;
  • Lee, Chun-Woo (Division of Marine Production System Management, Pukyong National University) ;
  • Choe, Moo-Youl (Department of Fisheries Physics, Pukyong National University) ;
  • Lee, Gun-Ho (Aquaculture Industry Division, West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
  • Received : 2011.02.18
  • Accepted : 2011.05.16
  • Published : 2011.06.30
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Abstract

Modeling fishing-gear systems is essential to better understand the factors affecting their movement and for devising strategies to control movement. In this study, we present a generalized mathematical modeling methodology to analyze fishing gear and its various components. Fishing gear can be divided into a finite number of elements that are connected with flexible lines. We use an algorithm to develop a numerical method that calculates precisely the shape and movement of the gear. Fishinggear mathematical models have been used to develop software tools that can design and simulate dynamic movement of novel fishing-gear systems. The tool allowed us to predict the shape and motion of the gear based on changes in operation and gear design parameters. Furthermore, the tool accurately calculated the swept volume of towed gear and the surrounding volume of purse-seine gear. We analyzed the fished volume for trawl and purse-seine gear and proposed a new definition of fishing effort, incorporating the concept of fished space. This method may be useful for quantitative fishery research, which requires a good understanding of the selectivity and efficiency of fishing gear used in surveys.

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References

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