• 한국수산과학회지
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• 제47권5호
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• pp.645-653
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• 2014

We examined seasonal variation in fish species composition in coastal waters near Wolseong Nuclear Power Plant in the East Sea of Korea. A total of 72 species, 39 families, 14 orders, 46,214 individuals, and 4,639,667 g were collected. Glyptocephalus stelleri was the most dominant species by number of individuals (35%), followed by Clupea pallasii (26%). Liparis tanakai and Lophius litulon were the dominant species by biomass, accounting for 46% and 28%, respectively. We showed that bottom salinity and temperature are the most important environmental factors influencing fish species composition. Although bottom salinity did not differ statistically among seasons or stations, we detected some variation among stations. Additionally, bottom temperature differed among seasons and stations (P<0.05), affecting numbers of individuals and biomass. Thus, seasonal variation in fish assemblages can be classified into two groups: spring/summer and autumn/winter.

• 한국수산과학회지
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• 제47권5호
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• pp.659-666
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• 2014

Our aim was to compare the community structure of fish in the coast of Wando Island between 2001 and 2013. Using a gape net with wings, we collected 61 taxa, wherein the most dominant species was Engraulis japonicus. The sea temperature in the middle layer of the survey station in 2001 (after June) was obviously higher than that in 2013, which was < $20^{\circ}C$. Except for Thryssa kammalensis in 2013, the log transformed individuals of seven dominant species, selected using a SIMPER (similarity-percentages procedure) analysis, decreased. Decreases in the individuals of Gobiidae spp., the warm-water species Trichiurus japonicus and Conger myriaster, and the migratory species Syngnathus schlegeli, Setipinna taty and Sardinella zunasi, which arrive in the southern coastal waters of Korea during summer-autumn, could be due to decreasing sea temperature in 2013. Thus, fish species diversity, estimated from rarefaction and k-dominance curves, declined in the coastal waters of Wando Island from 2001 to 2013, resulting in a significant difference in fish community structure.

• 한국수산과학회지
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• 제46권6호
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• pp.948-956
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• 2013

Seasonal variations in species composition and abundance of the fish assemblages in the coastal waters off Gadeok-do were determined using monthly sample collection by a small otter trawl in 2010-2011. Of a total of 65 fishes collected, the dominant species were Leiognathus nuchalis, Clupea pallasii, Thryssa kammalensis, Engraulis japonicus, Repomucenus valenciennei, Sillago japonica, Trachurus japonicus, Pennahia argentatus, Okamejei kenojei, Cynoglossus joyneri, Pholis fangi, Pleuronectes yokohamae, and Zoarces gillii. These 13 fishes accounted for 92.8% of the total number of individuals collected. The number of fish species, number of individuals, biomass, and species diversity indices fluctuated with the seasons. The peak number of fishes occurred in April, whereas the biomass of fishes was highest in August. The numbers and biomass of fishes were lower in February corresponding with the low temperatures, and diversity indices were lower in January than in any other month.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.740-743
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• 2006

We identify two distinct finer-scale frontal bands: 'Mainland China Coastal Front' (MCCF) and 'Kuroshio Front' (KF). The MCCF is along the 50-m isobath with large temperature gradient. The front is a boundary between the Mainland China Coastal Current and the offshore shelf waters. On the other hand, the KF is extending from the northeastern coast of Taiwan toward the northeast and into the shelf of south ECS. It forms a broad semicircle-shape and curving along 100-m isobath, it also deviates from eastward at around 26.5N-122E and leaves the shelf of ECS. This front should be the boundary between the Kuroshio water and the other shelf waters.

• 한국어류학회지
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• 제19권1호
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• pp.51-56
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• 2007

2005년 1월에서 12월까지 부산 주변해역에서 채집한 출현하는 성대(Chelidonichthys spinosus) 646개체의 위 내용물을 분석하였다. 성대의 주 먹이생물은 대롱수염새우 (Solenocera melantho), 둥근돗대기새우(Leptochela sydniesis), 꽃새우(Trachthysalambria curvirostris) 같은 새우류(Macrura)였으며, 게류(Brachyura)와 어류(Pisces) 등도 섭이하였다. 체장 25cm 이하의 비교적 작은 개체는 둥근돗대기새우, 게류, 어류 등을 주로 섭이하였고, 25 cm 이상의 큰 개체는 대롱수염새우, 꽃새우 같은 큰 크기의 새우류를 주로 섭이하였다. 성대의 먹이생물 크기는 성대의 체장이 증가함에 따라 증가하는 경향을 보였다.

• 한국양식학회지
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• 제17권1호
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• pp.51-57
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• 2004

소리도 주변해역에서 서식하는 새우류의 종조성과 계절변동을 파악하기 위하여 2000년 6월부터 2001년 5월까지 매월 1회씩 사리기간중 간조시에 채집하였다. 조사기간 동안 채집된 새우는 6과 16종이었으며, 그라비새우, Ρ. gravieri, 꽃새우, Τ. curvirostris, 마루자주새우, C. hakodatei, 중하, Μ. joyneri등이 연중 우점하였다. 월별 출현종수는 8월, 10월, 11월에 14종으로 가장 많이 출현하였으며, 하계인 6월과 7월에 각각 8, 10종으로 가장 적은 종이 출현하였다. 종다양도 지수는 0.14∼0.82의 범위를 나타내었으며, 5∼7월에는 비교적 낮은 값을 보였는데, 이는 균등도 지수에서도 마찬가지 결과였으며, 반면 9∼12월에는 비교적 높은 종다양도 지수 값을 보였다. 본 연구 해역에서 채집된 새우류는 출현 양상에 따라 주거종과 계절종, 일시방문종으로 나눌 수 있었다.

• 한국어류학회지
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• 제20권3호
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• pp.228-232
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• 2008

To investigate a proper sampling method for anchovy eggs and larvae in coastal waters of the South Sea, replicated samplings were made by different towing methods with different sampling gears and compared in terms of abundance and length composition. There was no significant difference in abundance in samples from vertical and oblique tows with a ring net. The abundance by replicated vertical tows with a ring net was not significantly different, but significant difference in abundance among sampling stations were found. The ring net sampled anchovy eggs in significantly greater numbers than collected by a NORPAC net, but both gears were not effective in obtaining quantitative samples of anchovy larvae larger than 3 mm. Therefore, samples by vertical tows with a ring net during the day at various stations is more efficient at estimating the density of anchovy eggs in an area compared to replicated sampling at a single station.

• 수산경영론집
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• 제28권1호
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• pp.1-26
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• 1997

The Proposal of this paper is to draw up solution about fishing disputes in Korea coastal waters. Small fishing vessels under 8 metric tons which is regulated by the provincial governors, must operate within provincial boundary on the sea as in fishery policy of Korea. on this, I think that the present situations of fishing disputes have related to the fishing license system. Problem of this kind, Before 1970's, fishing disputes rarely took place, and it, if any, did not bring any social conflicts or disputes. Since 1980's, some of fishing disputes have been reported within fisheries society Recently, The disputes have been increasing to become social conflicts between local people concerned and have evoked an argument on whether the provincial boundary on the sea exists. If such disputes continues to increases or remains unsolved, they will bring a tremendous social cost such as an accelerated decrease in fish resources, degradation of fishing grounds, disorder in fishing, destruction of fisheries culture and so on. The reasons for the growing disputes can be specified as fellows : the degradation of fish resources, the present fishing license system which inherently causes competitions in fish catching, irrational ceiling system of fishing vessels, legal problem on existing boundary between neighbouring two provinces, the functional problem of national or regional fishery coordination committee which has been established to coordinate general fishing disputes. This study has also dealt with Japan's experiences in fishing disputes which has the history of more than a hundred years and its coordinating mechanism. In the discussion section, some possible solutions have been briefly touched fer further study.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 추계학술발표회
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• pp.123-127
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• 2004

It is known that cold water appears and fog frequently forms in the southwest coastal waters of Korea in summer. The authors investigate the time and place. of cold water existence, and also whether the cold water affects the occurrence of fog formation. As a result, cold water begins to appear around Daeheugsando at the early summer. It gets colder with times and cold water area moves toward southwest of Jindo in mid-summer, then disappears in this area around mid-Oct. Fog mostly forms in April through August and most frequently occurs at Chukdo(Jindo) where sea surface temperature shows lower than that at the adjacent area. Accordingly it is taken that the cold water is considerably contributed to form the dense and frequent fog around Jindo area.

• 한국발생생물학회지:발생과생식
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• 제10권2호
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• pp.79-84
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• 2006

제주 연안에 서식하는 용치놀래기, 어렝놀래기, 황놀래기, 놀래기를 대상으로 체장에 따른 성 분포와 생식소의 성 특성을 조직학적으로 탐색하여 성 전환 양상을 조사 비교하였다. 용치놀래기, 어렝놀래가, 황놀래기, 놀래기는 자성선숙형 자웅동체어로 조직학적 관찰 결과 정소조직(정자형성부위)이 퇴화기 난소의 전역에 출현하는 혼재형 2에 속하는 어종이었다. 용치놀래기, 황놀래기 그리고 놀래기는 1차 수컷과 2차 수컷이 존재하는 복웅성 어류이고, 조사된 어렝놀래기는 암컷이 수컷으로 성 전환된 2차 수컷만이 출현하는 단웅성 어류로 사료된다.