• 제목/요약/키워드: Fisheries oceanography

검색결과 730건 처리시간 0.026초

Stock assessment and management implications of horse mackerel in Korean waters, based on the relationship between recruitment and the ocean environment

  • Zhang, Chang-Ik;Lee, Jae-Bong
    • 한국어업기술학회:학술대회논문집
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    • 한국어업기술학회 2000년도 춘계수산관련학회 공동학술대회발표요지집
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    • pp.328-329
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    • 2000
  • This research is to estimate population parameters of the Korean horse mackerel stock and to determine the status of the stock. Considering the linkage of recruitment with the variation of environmental conditions in the early life history, acceptable biological catch (ABC) of horse mackerel was estimated. (omitted)

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A case study of red tide detection around Korean waters using satellite remote sensing

  • Suh, Y.S.;Lee, N.K.;Jang, L.H.;Kim, H.G.;Hwang, J.D.
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.654-655
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    • 2003
  • Korea has experienced 10 a Cochlodinium polykrikoides red tide outbreaks during the last 10 years (1993-2002). The monitoring activities at National Fisheries Research and Development Institute (NFRDI) in Korea have been extended to all the coastal waters after the worst of fish killing by C. polykrikoides blooms in 1995. NFRDI is looking forward to finding out the feasibility of red tide detection around Korean waters using satellite remote sensing of NOAA/AVHRR, Orbview-2/SeaWiFS, IRS-P4/OCM and Terra/MODIS on real time base. In this study, we used several alternative methods including climatological analysis, spectral and optical methods which may offer a potential detection of the major species of red tide in Korean waters. The relationship between the distribution of SST and C. polykrikoides bloom areas was studied. In climatological analysis, NOAA, SeaWiFS, OCM satellite data in 20th and 26th August 2001 were chosen using the known C. polykrikoides red tide bloom area mapped by helicopter reconnaissance and ground observation. The 26th August, 2001 SeaWiFS chlorophyll a anomaly imageries against the imageries of non-occurring red tide for August 20, 2001 showed the areas C. polykrikoides occurred. The anomalies of chlorophyll a concentration from satellite data between before and after red tide outbreaks showed the similar distribution of C. polykrikoides red tide in 26th August, 2001. The distribution of the difference in SST between daytime and nighttime also showed the possibility of red tide detection. We used corrected vegetation index (CVI) to detect floating vegetation and submerged vegetation containing algal blooms. The simple result of optical absorption from C. polykrikoides showed that if we use the optical characteristics of each red tide we will be able to get the feasibility of the red tide detection.

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참조기의 동해 출현 기록 (A Record of the Yellow Croaker Pseudosciaena polyactis in the East Sea)

  • 서해립;박광재;차성식
    • 한국수산과학회지
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    • 제27권6호
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    • pp.836-838
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    • 1994
  • 1993년에 동해안의 고리, 월성, 울진 앞바다에서 저서어류의 생물상을 계절별로 조사했다. 그 결과 지금까지 남해와 서해에 분포한다고 알려진 참조기를 고리와 월성에서 각각 13마리 (표준체장 $131.8{\sim}180.1mm$)와 1마리 (170.2mm) 채집하여, 본 종이 동해에도 분포하고 있다는 것을 확인했다.

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A Combined Effect of Differential Cooling and Topography on the Formation of Ulleung Warm Eddy

  • SEUNG Young Ho;NAM Soo Yong;LEE Sang Yong
    • 한국수산과학회지
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    • 제22권6호
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    • pp.375-384
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    • 1990
  • A numerical experiment is made to study the combined effect of differential cooling and bottom topography on the formation of Ulleung Warm Eddy. The Ulleung Warm Eddy appears after the passage around the Ulleung Basin of coastal trapped baroclinic waves generated in the north initial density front to the north, the continental slopes both to the west and south, and the Yamato Rise to the east. It resides therefore always inside the Ulleung Basin, as confirmed by observations.

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Five species of the Genus Prionospio (Polychaeta: Spionidae) in Kwangyang Bay, Korea

  • Jung Rae-Hong;Choi Byoung-Mi;Hong Jae-Sang
    • Fisheries and Aquatic Sciences
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    • 제1권2호
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    • pp.216-226
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    • 1998
  • Specimens of the spionid polychaetes (Polychaeta: Spionidae) were collected and examined in the subtidal shallow waters of Kwangyang Bay, southern coast of Korea, from April 1990 to November 1994. Five species of the genus Prionospio are described and illustrated: Prionospio (Minuspio) multibranchiata Berkeley, 1927, P. (Prionospio) saccifera Mackie and Hartley, 1990, P. (P.) bocki Soderstrom, 1920, P. (P.) membranacea Imajima, 1990, and P. (P.) paradisea Imajima, 1990. These five species of spionid polychaetes are reported for the first time in Korean waters.

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Dinoflagellate Cyst Assemblages in the Surface Sediments from the Northwestern East China Sea

  • Cho Hyun-Jin;Matsuoka Kazumi;Lee Joon-Baek;Moon Chang-Ho
    • Fisheries and Aquatic Sciences
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    • 제4권3호
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    • pp.120-129
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    • 2001
  • Thirty-six dinoflagellate cysts, representing 15 genera were identified in the surface sediments obtained from the northwestern East China Sea. Three cyst morphotypes found in this survey have not previously been described in the East China Sea and adjacent waters: Seleno­pemphix sp. 2, Selenopemphix sp. 3 and Trinovantedinium sp. 1. In the northwestern East China Sea, Operculodinium centrocarpum, Spiniferites bulloideus and ellipsoidal cysts of Alexandrium were commonly observed. Moreover, it was recognized that the ellipsoidal cysts of Alexandrium, whose motile cells of A tamarense and/or A catenella are responsible to paralytic shellfish poisoning, distributed not only restricted to the coastal areas but also to the offshore stations far from the Changjiang River mouth.

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