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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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A primary study on the effect of artificial disturbance on a fishing area by shrimp beam trawl

새우조망에 의한 어업구역의 인위적인 영향에 대한 선행연구

  • 차봉진 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 윤상필 (국립수산과학원 갯벌연구소) ;
  • 정래홍 (국립수산과학원 환경연구과) ;
  • 김성길 (국립수산과학원 환경연구과) ;
  • 이재성 (국립수산과학원 환경연구과) ;
  • 윤원득 (국립수산과학원 어장정보과) ;
  • 신종근 (국립수산과학원 연구기획과)
  • Published : 2009.11.30
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Abstract

It has been considered that fishing areas for shrimp beam trawl have been in ruin because Korean local governments have permitted trawling into the areas limited by the fisheries local regulations from 1994. Physical and biological effects of the trawling were investigated in the study. Physical effects were investigated by optical methods such as trawling tracking by side scan sonar and comparing the gear both before and after trawling. Biological aspects were investigated by grab sampling of benthic animals, concentration of trace metals in sediment and a flux evaluation of ${NH_4}^+,\;{PO_4}^-,\;and\;SiO_2$ by coring. The fishing activity had physical impacts on the seabed but these recovered naturally in less than fourty days naturally, which increased the benthic biodiversity, increases the trace metal concentration of and nutrient flux into the seawater, especially phosphate and silicate. This method and these results can help in further studies looking for disturbances by fishing.

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References

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  1. Analysis of marine sediments between fishing area and non-fishing area in the shrimp beam trawl vol.48, pp.3, 2012, https://doi.org/10.3796/KSFT.2012.48.3.208
  2. Catches characteristics between fishing area and non-fishing area in the shrimp beam trawl of Geoje waters, Korea vol.49, pp.4, 2013, https://doi.org/10.3796/KSFT.2013.49.4.377