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Catch fluctuation of the rectangular set net according to the tide age in the coastal waters of Jeju

제주연안 각망의 조석에 의한 어획량 변동

  • Lee, Chang-Heon (Training ship, College of Ocean Science, Cheju National University) ;
  • Choi, Chan-Moon (Training ship, College of Ocean Science, Cheju National University)
  • 이창헌 (제주대학교 해양과학대학 실습선) ;
  • 최찬문 (제주대학교 해양과학대학 실습선)
  • Published : 2008.05.31

Abstract

The fundamental data on the catch fluctuation in the rectangular set net according to the tide age were developed based on the catches recorded from the year 1986 to 2004 in the coastal waters of Hamdeok, Jeju. Total catch by the rectangular set net had a deep connection with the tide age. In particular, during increasing tide, total catch were reduced gradually from the neap tide to the high tide. As it turned out, the slope of total catch declined by degree and showed a correlation coefficient of determination of 0.76. On the contrary, in the case of decreasing tide, there was little sign of rise in total catch. In particular, large catch seemed to occur at the next tide to the neap tide. In the relation between the catch and the tide age, the level of the correlation coefficient chosen at $p{\leq}0.05$ decreased in the order rabbitfish(-0.84) and horse mackerel(-0.71), while the significance of other dominant species were not selected.

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Cited by

  1. Investigation of bycatch and discards of funnel net in the coastal waters of Yeosu vol.46, pp.4, 2010, https://doi.org/10.3796/KSFT.2010.46.4.324
  2. Catch fluctuation of the Pound Set Net According to Tide Age in the Coastal Waters of Jeju vol.42, pp.1, 2009, https://doi.org/10.5657/kfas.2009.42.1.083
  3. A Seasonal Characteristic of Marine Environment and Fish Assemblage in the Coastal waters Jeju Island, Korea from 2012 to 2013 vol.27, pp.2, 2015, https://doi.org/10.13000/JFMSE.2015.27.2.319