Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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An ecological risk assessment for the effect of the Korean tuna longline fishery in the Western and Central Pacific Ocean

중서부 태평양해역의 한국 다랑어 연승어업 영향에 대한 생태학적 위험도 평가

  • Kwon, You-Jung (Department of Fisheries Physics, Graduate School, Pukyong National University) ;
  • An, Doo-Hae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Moon, Dae-Yeon (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Hwang, Seon-Jae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Lee, Jae-Bong (Fisheries Resources Research Division, National Fisheries Research and Development Institute)
  • 권유정 (부경대학교 대학원 수산물리학과) ;
  • 안두해 (국립수산과학원 해외자원과) ;
  • 문대연 (국립수산과학원 해외자원과) ;
  • 황선재 (국립수산과학원 해외자원과) ;
  • 이재봉 (국립수산과학원 자원연구과)
  • Published : 2009.03.31
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Abstract

Ecological risk assessment(ERA), developed in Australia, can be used to estimate the risk of target, bycatch and protected species from the effects of fishing using limited data for stock assessment. In this study, we employed the ERA approach to estimate risks to tunas, billfishes, sharks, sea turtles and other species by the Korean tuna longline fishery in the Western and Central Pacific Ocean using productivity and susceptibility analyses of the ERA based on low(<1.30), medium(1.30-1.84) and high risk(>1.84). Albacore, bigeye, yellowfin, skipjack and bluefin tunas were generally evaluated in the medium risk. The susceptibility of tuna species, however, had higher risks than the productivity. Billfishes were also at medium risk, while sharks were at high risk by the tuna longline fishery. The risk of productivity was generally high, because most sharks caught by the tuna longline fishery have high longevities, i.e., over 10 years, including ovoviviparous species. Susceptibility, which is related with the selection of fishing gear, was also high, because the longline fishery has no gear modifications to prevent bycatch of protected species. Not only target tuna species were influenced by the tuna longline fishery in the Western and Central Pacific Ocean, but also nontarget species, such as pomfret, mackerels rays, sea turtle were done. Ecosystem-based fishery assessment tools, such as productivity and susceptibility analysis(PSA), have the ability to provide broad scientific advice to the policy makers and stakeholders.

Keywords

References

  1. FAO(Food and Agriculture Organization of the United Nations), 2007a. Report of the expert consultation on international guidelines for the management of deep-sea fisheries in the high seas, pp. 48
  2. FAO, 2007b. Capture production 2005. FAO Yearbook of Fishery Statistics Vol.100/1, pp. 539
  3. FAO, 2007c. Methodological Workshop on the Management of Tuna Fishing Capacity. Stock status, data envelopment analysis, industry surveys and management options. FAO Fisheries Proceedings P8, pp. 218
  4. FAO, 1993. Interactions of Pacific tuna fisheries. Volume 2 Papers on biology and fisheries. FAO Fisheries Technical Paper 336/2. pp. 439
  5. Gilman, E., S. Clarke, N. Brothers, J. Alfaro-Shigueto, J. Mandelman, J. Mangel, S. Petersen, S. Piovano, N. Thomson, P. Dalzell, M. Donson, M. Goren and T. Werner, 2008. Shark interactions in pelagic longline fisheries. Mar. Pol, 32, 1-18 https://doi.org/10.1016/j.marpol.2007.05.001
  6. Hoyle1, S., A. Langley, and J. Hampton, 2008. Stock assessment of albacore tuna in the South Pacific Ocean. WCPFC-SC4-2008/SA-WP-8. 4th Regular Session of the WCPFC Scientific Committee, Port Moresby, pp. 126
  7. Ichinokawa, M., M. Kai, Y. Takeuchi and R. Conser, 2007. Brief review of the methods for the future projections of Pacific bluefin tuna stock assessment. ISC/07/PBFWG-3/21, pp. 29
  8. Kirby, D.S., 2006. An ecological risk assessment for species caught in WCPO longline and purse seine fisheries. Working Paper EB-WP1, 2nd Regular Session of the WCPFC Scientific Committee, Manila, pp. 25
  9. Kirby, D.S., B. Moloney, 2007. An ecological risk assessment(ERA) for the effects of fishing in the Western & Central Pacific Ocean: research planning workshop report and draft research plan. Working Paper EB-WP3, 3rd Regular Session of the WCPFC Scientific Committee, Honolulu, pp. 31
  10. Kleiber, P., M.G. Hinton and Y. Uozumi, 2003. Stock assessment of blue marlin (Makaira nigricans) in the Pacific using MULTIFAN-CL. Marine and Freshwater Research. 54(4), 349-360 https://doi.org/10.1071/MF01246
  11. Kolody, D., R. Campbell and N. Davies, 2008. A MULTIFAN-CL stock assessment of South-West Pacific swordfish 1952-2007. WCPFC-SC4-2008/SA-WP-6. 4th Regular Session of the WCPFC Scientific Committee, Port Moresby, pp. 90
  12. Langley, A. and J. Hampton, 2008. Stock assessment of skipjack tuna in the western and Central Pacific Ocean. WCPFC-SC4-2008/SA-WP-4. 4th Regular Session of the WCPFC Scientific Committee, Port Moresby, pp. 74
  13. Langley, A., J. Hampton, K. Pierre and S. Hoyle, 2008. Stock assessment of bigeye tuna in the Western and Central Pacific Ocean, including an anlaysis of management options. WCPFC-SC4-2008/SA-WP-1. 4th Regular Session of the WCPFC Scientific Committee, Port Moresby, pp. 137
  14. Langley, A., J. Hampton, P. Kleiber and S. Hoyle, 2007. Stock assessment of yellowfin tuna in the western and central Pacific Ocean, including an analysis of management options. WCPFC-SC3-SA SWG/WP-01. 3rd Regular Session of the WCPFC Scientific Committee, Honolulu, pp. 120
  15. Moon, D.Y., S.J. Hwang, D.H. An and S.S. Kim, 2007. Bycatch of sharks in Korean tuna longline fishery. J. Kor. Soc. Fish. Tech., 43(4), 392 338 https://doi.org/10.3796/KSFT.2007.43.4.329
  16. Pikkitch, E.K., C. Santora, E.A. Babcock, A. Bakun, R. Bonfil, D.O. Conover, P. Dayton, 2004. Ecosystem based fishery management. Science, 305, 346-347 https://doi.org/10.1126/science.1098222
  17. Smith, A.D.M., E.J. Fulton, A.J. Hobday, D.C. Smith and P. Shoulder, 2007. Scientific tools to support the practical implementation of ecosystem-based fisheries management. ICES J. Mar. Sci., 64, 633-639 https://doi.org/10.1093/icesjms/fsm041
  18. Stobutzki, I., M. Miller and D. Brewer, 2001. Sustainability of fishery bycatch: a process for assessing highly diverse and numerous bycatch. Environmental Conservation, 28(2), 167-181 https://doi.org/10.1017/S0376892901000170
  19. WCPFC(Western and Central Pacific Fisheries Commission), 2008. Executive summary. Commission for the Conservation and Management of highly migratory fish stocks in the Western and Central Pacific Ocean. Scientific committee fourth regular session. 11-22, Aug., 2008, pp. 266
  20. Yokota, K., M. Kiyota and H. Minami, 2006. Shark catch in a pelagic longline fishery: Comparison of circle and tuna hooks. Fish. Res., 81, 337-341 https://doi.org/10.1016/j.fishres.2006.08.006

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