Environmental Condition of Sea Areas for Anchovy Lift Net in Kamak Bay

가막만 멸치 들망 어장의 해역별 특성

  • Published : 1998.03.01

Abstract

In order to find out the environmental factors influencing the catch of anchovy lift nets in kamakbay, the three oceanographic factors, i. e., the water temperature, the salinity, the amount of chlorophyll-a were observed respectively from August 1 to 12, 1995 and from September 20 to 26, 1995, and each of them was compared with the catch of anchovy by the lift net. The results obtained are summerized as follow : 1) The water temperature was ranged from 17.3 to 29.6$^{\circ}C$ and its difference between the surface and bottom was 1 to 3$^{\circ}C$. In the three areas, A, B and C, the area A was the hightest in temperature, the area B being a second, and the area C being the lowest. 2) The salinity was ranged from 32.20 to 33.47$\textperthousand$ and its difference between the surface and bottom was not significant. In the three areas, the area A was the highest in salinity, the area B being a second, and the area C being the lowest. 3) The amount of chlorophyll-a was ranged from 0.19 to 5.30mg/m supper(3) and its difference among the three areas was not significant. Daily variation of the amount was very irregulated because the position operated was changed daily. 4) A comparison of the water temperature, the salinity and the amount of chlorophyll-a with the catch gave that the water temperature and the amount of chlorophyll-a had large influence on the catch and the salinity did not so. However, the influence of the amount of chlorophyll-a was larger than that of the water temperature. 5) The catch of anchovy was large respectively during two hours after sun set and during two hours before sun rise.

Keywords

References

  1. 한국해양학회지 v.1 한국해역의 식물 플랑크톤의 연구 - Ⅰ.1965년 하계의 한국해협 표층수의 식물 플랑크톤의 양과 분포 최상
  2. 한국해양학회지 v.12 no.1 멸치 낙망 어획고와 환경과의 관계 황찬;김완수
  3. 부산수대년보 v.12 멸치 자원의 회유에 관한 연구 장선덕;홍성윤;박청길;진평;이병기;이택열;강용주;공영
  4. 석사학위청구론문 여수 연안 멸치 자망 어장의 해황과 어획량 변동 주찬순
  5. 한국어업기술학회지 v.25 no.2 여수 해만의 어장학적 특성 김동수;이조출;김대안
  6. 어법학 이병기
  7. 한국어업기술학 회지 v.27 no.4 별치 기선권현망의 어장형성과 어황변동에 관하여 박종화;이주희
  8. 멸치 자망 어획량의 분포와 해황. 한수지 v.16 no.4 손태준;김진건
  9. 멸치 자망 어획량의 계절변동 및 어장형성. 한수지 v.7 no.2 손태준;이병기;장호영
  10. 농수산통계년보 수산청
  11. Marine Plankton Ecology Bougis