NDLI: An ecosystem-based assessment of hairtail (Trichiurus lepturus) harvested by multi-gears and management implications in Korean waters

Content Provider	Springer Nature Link
Author	Kang, Hee Joong Zhang, Chang Ik Lee, Eun Ji Seo, Young Il
Copyright Year	2015
Abstract	Hairtail (Trichiurus lepturus) has been traditionally harvested by multi-gear types in the Yellow Sea and the East China Sea, except for the East Sea (Sea of Japan) in Korean waters. Six different fishery types such as offshore stownet fishery, offshore longline fishery, large pair-trawl fishery, large purse seine fishery, large otter trawl fishery and offshore angling fishery target to harvest the hairtail stock accounting for about 90% of the total annual catch. We attempted to develop an ecosystem-based fisheries assessment approach, which determines the optimal allocation of catch quotas and fishing efforts for major fisheries. We conducted standardization of fishing effort for six types of hairtail fisheries using a general linear model (GLM), and then estimated maximum sustainable yield (MSY) and maximum economic yield (MEY). Estimated MSY and MEY for the hairtail stock were estimated as 100,151 mt and 97,485 mt, respectively. In addition, we carried out an ecosystem-based risk analysis to obtain species risk index (SRI), which was applied to adjusting the optimal proportion of fishing effort for six hairtail fisheries as a penalty or an incentive. As a result, fishing effort ratios were adjusted by SRI for the six fisheries types. Also, the total allowable catch (TAC) was estimated as 97,485 mt and the maximum net profit at TAC by the hairtail fisheries was estimated as 778 billion won (USD 765 million).
Starting Page	237
Ending Page	250
Page Count	14
File Format	PDF
ISSN	17385261
Journal	Ocean Science Journal
Volume Number	50
Issue Number	2
e-ISSN	20057172
Language	English
Publisher	Korea Ocean Research and Development Institute and The Korean Society of Oceanography
Publisher Date	2015-07-09
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	multi-gear standardization maximum sustainable yield maximum economic yield ecosystem-based approach total allowable catch Oceanography Marine & Freshwater Sciences Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Oceanography

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