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서해립,서호영 濟州大學校海洋硏究所 1993 해양과환경연구소 연구논문집 Vol.17 No.-
제주도 주변해역에 출현하는 동물플랑크톤의 생물량과 종조성의 시·공간적 변동에 대한 연구를 검토하였다. 동물플랑크톤의 평균 생물량은 근해(50-100㎎/㎥)보다 연안(<50㎎/㎥)이 낮았다. 연안에서 동물플랑크톤의 생물량은 태평양 아열대해역의 생물량과 비슷하였다. 연안의 총 동물플랑크톤(>0.09㎜)에서 몸이 큰 동물플랑크톤(>0.33㎜)이 차지하는 비율이 컸다. 작은 동물플랑크톤(0.09-<0.33㎜)의 생물량은 10-15㎎/㎥이었다. 제주도 연안의 chl.-a농도는우리나라 다른 연안역에 비해 낮았다. Go et al.(1989)이 보고한 것처럼 연안 동물플랑크톤이 높은 생물량에 대한 생산량의 비를 나타낸다면, 저서환경으로부터의 추가적 에너지흐름 경로가 존재할 수 있다. 저서조류기원의 데트리터스는 연안 동물플랑크톤의 중요한영양 공급원이 될 수도 있다고 여겨진다. 또 식물플랑크톤과 데트리터스 소비자로서 연안 동물플랑크톤의 역할을 평가하기 위해서는 몸이 작은 동물플랑크톤과 저서-표영성 동물플랑크톤에 관한 보다 많은 분류 및 생태학적 정보가 필요하다. We reviewed recent studies on estimating the spatio-temporal variability in biomass and species composition of zooplankton around Cheju Island. The average estimated biomass of zooplankton was lower in inshore (〈50 ㎎/㎡), compared to offshore (50-100 ㎎/㎡). The biomass of inshore zooplankton was similar to that of the subtropical Pacific. The large zooplankton (〉 represented a greater portion of total (〉0.09㎜) inshore zooplankton biomass. The average biomass of small zooplankton (0.09-〈0.33㎜) ranged 10-15㎎/㎡. The low concentration of chl. -a appeared in inshore (〈1㎍/1), compared to the other Korean coastal waters (3-6㎍/1). High P/B ratio of inshore zooplankton previously reported by Go et al. (1989) implies the presence of an additional pathway of energy flow from benthic environment. It is assumed that detritus originated from benthic algae may be a significant source of food for inshore zooplankton. In addition, more taxonomical and ecological information on small (0.09-0.33㎜) zooplankton and bentho-pelagic zooplankton is needed to assess the role of inshore zooplankton as consumers of phytoplankton and/or detritus.
Stylocheiron abbreviatum (Euphausiacea, Crustacea): A New Record from the Korean Waters
Suh, Hae-Lip The Korean Society of Fisheries and Aquatic Scienc 2012 Fisheries and Aquatic Sciences Vol.15 No.3
The euphausiid crustacean Stylocheiron abbreviatum G. O. Sars, 1883 has been found in the southern waters of Jeju Island, Korea. This species is the third member of the genus Stylocheiron and the twelfth of the family Euphausiidae identified in Korean waters. Using descriptions of this species, a key to Korean euphausiids is presented.
Suh, Hae-Lip,Lim, Ju-Hwan,Soh, Ho-Young The Korean Society of Oceanography 1998 Journal of the Korean Society of Oceanography Vol.33 No.1
In February and April 1997, three temporary interruptions of electric power production at the Uljin Nuclear Power Plant in the east coast of Korea were caused by the malfunction of the cool-ing-water supply unit. The clogging of the drum screens inside the unit caused by the surface swarm of the euphausiid Euphausia pacifica Hansen might be responsible for the malfunction. These incidents were of particular interest since such interruption of reactors' operation by krill swarms had not previously been reported. Using samples caught by the drum screens inside the cooling water-supply unit, we investigated the population structure of surface swarms. One occasion of nighttime and three occasions of daytime surface swarms were found in February and April 1997, respectively. The foreguts of more than 60% of E. pacifica in nighttime surface swarm were in full condition. This evidence suggests that E. pacifica aggregates to the surface water at night for feeding. In daytime surface swarms consisting of mature E. pacifica, however, foreguts in full condition were only found in less than 10eio of krill examined, suggesting that daytime surface swarms are closely related to breeding activity. During the study period, the growth rate of mature females was more than twice higher than that of mature males. Analyses of the sex-ratio and length-frequency data show a decrease in the portion of males with increasing size. There was a decline in the number of males of 19 mm in length. Energy loss during spermatophore transfer may result in the death of male E. pacifica, as found in male E. superba.
1996 년 제주도에 나타난 대형저서동물의 대량폐사 물리해양학적 요인의 역할
서해림(Hae Lip Suh),조양기(Yang Ki Cho),서호영(Ho Young Soh),김대환(Dae Hwan Kim) 한국환경생물학회 1999 환경생물 : 환경생물학회지 Vol.17 No.2
An unprecedented mass mortality of commercially important macrobenthic animals, including Haliotis discus discus, H. diversicolor, Batilus cornutus, Sticopus japonicus and Hemicentrotus pulcherrimus, occurred off the west coast of Cheju Island in summer of 1996. Phytoplankton blooms were absent along the coast. The appearances of the surface low-salinity water (SLSW) off the coast of Cheju Island preceded the mass mortality, leading to speculation that the low-salinity stress may have a crucial role in the mass mortality. Since there was no heavy rain for the same period, the precipitation was not a possible explanation for the decrease of salinity. Physical oceanographic data taken by NFRDI(1997) clearly indicated that the SLSW was present in the area between China and Cheju Island in August 1996. This is most likely due to a freshwater supply resulting from the existence of large river runoff. Evidence of the current and the distance between the Uangtz River and Cheju Island also supports the hypothesis that source of the SLSW was the freshwater originated from the Yangtz River runoff.
우렁쉥이, Halocynthia roretzi(V. Drasche)의 먹이생물중 植物性浮游生物
서해입,洪性潤 釜山水産大學校 1982 釜山水産大學 硏究報告 Vol.22 No.1
1981년 3月부터 9月까지 迎日灣에서 養殖되고 있는 우렁쉥이(Halocynthia riretzi)의 먹이 選擇性 여부를 알기 위하여 消化管內容物과 海水中의 浮游生物을 비교하였다. 우렁쉥이의 浮游生物 섭취는 選擇的이었다. 選擇性 여부의 대상이 된다고 인정되는 植物性浮游生物을 形態的으로 大別해 본 결과, 棘毛를 갖고 colony를 이루는 Chaetoceros group과 紡錘形인 Nitzschia와 Navicula group, 棒狀의 colony를 이루는 Leptocylindrus group으로 구분되었다. Nitzschia와 Navicula group에 있어서는 選擇的으로 섭취하였지만 Chaetoceros group은 選擇的으로 섭취하지 않았다. Leptocylindrus group은 뚜렷한 選擇性의 대상이 되지 않았다. 水中 plankton의 絶對量의 변화가 選擇性에 영향을 미쳐 內容物의 조성을 변하게 할 수 있는 가능성을 보였다. The phytoplankton in water and the gut content of Halocynthia roretzi were compared to know the selectivity of food organism based on the tunicate samples in Youngil Bay from March to september, 1981. The filter feeding of H. roretzi revealed the selectivity of phytoplanktonic food organisms. The major phytoplanktonic food was grouped into three groups: setous and colonial Chaetoceros group; spindle shaped Nitzschia and Navicula group; long cylinder shaped Leptocylindrus group. Chaetoceros group was the least preferrede, while nitzschia and Navicula group was of higher priority. Leptocylindrus group was not clearly selective. The density of phytoplankton in water could be possible to influence the selectivity and the composition of the gut content.
서해립,SUH, HAE-LIP The Korean Society of Oceanography 1994 韓國海洋學會誌 Vol.29 No.1
The fish host, Acanthogobius hasta, was sampled monthly (April 1990 to March 1991) from Wando Islands, Korea, and examined for the parasitic Copepod Acanthochondria brevicorpa. Prevalence was positively correlated with fish length; parasitic copepods were only found in fishes > 24 cm TL. distinct seasonal variation in prevalence and intensity of A. brevicorpa infection was observed, although no data were available in April, June and July 1990 when no A. hasta was caught. Averaged over all samples, of the 83 fishes caught, 34.9% were infected with a mean intensity of 3 copepods per host No A. brevicorpa was found on the host between August and October. Ovigerous females of the Copepod were found between February and May, with an abundance peak in May. Young copepodids (Ci to CIII) of A. brevicorpa were not present throughout the year, but only late copepodids of CIV and CV were found on the fish in March and May. Results from the present study suggest that A. brevicorpa mainly produces larvae in spring, and may have a life cycle including additional hosts.