• Korean journal of applied entomology
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• v.27 no.4
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• pp.190-193
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• 1988

Twenty two species including two unidentified species of Scolytidae (Coleoptera) attracted to the attractant trap were listed in this paper. Of listed beetles, two species, TryPodendron singnatum and Xyleborus defenslls were recorded to the fauna for the first time and described in Korean.

• Korean Journal of Environmental Biology
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• v.20 no.4
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• pp.325-338
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• 2002

The distribution and standing crop of phytoplankton were investigated at 12 stations of Songjiho, Ssangho, Maeho and Hyangho as of four lagoons in the east coast from May to November, 2001. It turned out to be total of 164 taxa, and classified as four phylums, four classes, 14 orders, 20 families, 59 genera, 139 species, 22 varieties, two forms and 1 unidentified species by Engler's classification system. Among 104 taxa, 16 taxa including Oscillatoria chlorina were identified as indicators of water pollution and only Cocconeis placentula was the indicator of the clean water. Standing crops of all stations investigated appeared to be relatively high values. Based on the present study upon the distribution and standing crop of phytoplankton, it is regarded as the state of the eutrophication in Songjiho, Ssangho, Maeho and Hyangho as of four lagoons in the east coast.

• Korean journal of applied entomology
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• v.21 no.2 s.51
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• pp.99-102
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• 1982

This report deals with three species belonging to three genera of anthomyiid pests from Korea, among them one species is new to science as: Emmesomyia koreana n. sp., and two species are newly recorded from Korean fauna: Meliniella luteipennis (Ringdahl, 1950) and Delia echinata (Seguy, 1923).

• The Korean Journal of Soil Zoology
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• v.4 no.2
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• pp.69-73
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• 1999

The spider fauna of DMZ(Demilitarized Zone) of Chulwon in Kangwon-do, Korea was investigated. As a result, the authors present a list of 54 species of 54 genera in 14 families (2 unidentified species newly known to Korea; Evarch sp(C)., Helicius sp. (A)) and revise Asianellus festivus of the unrecorded genus to be transferred from the genus Phlegra from Korea.

• Korean Journal of Ecology and Environment
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• v.34 no.3 s.95
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• pp.199-205
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• 2001

This study was investigated to the assessment of organic pollution using attached diatom assemblages in the Shinchon stream on April, June, September and December 1999. Diatoms were identified total 74 taxa which composed of 68 species, 4 varieties and 2 unidentified species. The Centrales were 5 taxa and Pennales were 69 taxa. Dominant species were Navicula subminuscula, Navicula saprophila and Nitzschia palea which were saprophilous taxa to organic pollution. N. palea was dominant species at st. $1{\sim}3$ on April, June and September and N. subminuscula was recorded as dominant species at st. 4 on June, September and December. N. saprophila was dominated only at station 4 on April. DAIpo values were ranged $0.4{\sim}15.3$ at all stations from April to December and the water qualities were polysaprobic states except to ${\alpha}-mesosaprobic$ state at st. 1 on June. If Navicula sp. was identified as saprophilous taxa, DAIpo value of this station will be 3.5 and water quality of the station will be polysaprobic state. This stream was assessed the water qualities of polysaprobic states.

• Proceedings of the Korean Aquaculture Society Conference
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• 2003.10a
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• pp.97-97
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• 2003

유용 수산생물인 전복, 소라, 성게 등 무척추동물의 종묘생산에 있어 부착 규조류는 수서 생태계의 일차 생산자로서 유생의 변태와 변태 후의 초기 먹이생물로 활용되고 있으며 최근에는 단일 부착규조류의 실내 배양을 통해 유용 수산생물 종묘의 대량 생산을 유도하고 있다. 부착규조류의 생물량 및 종 조성에 따라 이들 조식동물의 성장과 먹이 효율성에 커다란 영향을 끼친다. 이 연구는 종묘생산의 환경 조건과 동일한 현장에서 유수식 수조에 투명 플라스틱 부착파판(30$\times$40cm)을 설치하여 1997년 10월부터 1999년 4월까지 실내수조에 설치한 부착파판을 10일 간격으로 회수하여 부착된 규조류의 생물량과 환경적 특성을 조사하였다. 실험기간 동안 자연광을 55~75% 차단한 상태에서 실험을 진행하였고 수온과 염분은 각각 14.1$^{\circ}C$~28.6$^{\circ}C$와 32.5$\textperthousand$~35.3$\textperthousand$의 범위를 보였다. 실험기간 동안 부착규조류의 총 출현종수는 27종(17속 25종 2미동정종)으로 중심규조류(centric diatom)가 4종 그리고 우상규조류(pennate diatom)가 23종이었다. 현존량의 30% 이상을 점유하는 부착 규조류들은 Bacillaria paxillifera, Cocconeis scutellum, Diatoma hyalina, Navicula mollis, Nitzschia sp., Synedra tabulta 등 6종이 우점하였다. 부착규조류의 현존량은 2.5$\times$$10^3$~ 5.0$\times$$10^{5}$ cells $cm^{-2}$ 의 분포 범위로 1999년 4월에 가장 높고 1997년 10월에 가장 낮았다. Chlorophyll $\alpha$량 ($\mu\textrm{g}$ chl $\alpha$ $cm^{-2}$)은 0.02 ~ 1.72 $\mu\textrm{g}$ chi $\alpha$ $cm^{-2}$의 범위로써 부착규조류의 현존량과 유사한 분포 특성을 보였다. 유수식 실내수조에 부착된 부착규조류의 부착 형태, 우점종과 현존량은 배양 시기에 따라 종간 특이성을 보였다.다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.23 no.6
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• pp.439-442
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• 1990

We have examined harpacticoid copepods inhabiting the phaeophyte Miyok, Undaria pinnatifida (Harvey), on the southern coast of Korea and cultured in the laboratory pieces of Miyok frond heavily infested by frond-mining nauplii to identify the harpacticoid copepod to which those nauplii belong. Of the harpacticoids found in Miyok-washings, only Amenophia orientalis Ho and Hong and an unidentified species of the genus Scutellidium occurred consistently in all Miyok samples examined. Many females of both species carried egg sacs. In the cultures the frond-mining nauplii developed, in 15 days at$15^{\circ}C$, into cope-podid stages or adults that were all identified with Amenephia orientalis. It is therefore concluded that this species is the causative agent for the so-called pinhole disease of the cultivated Miyok on the southern coast of Korea, which is diagnosed by the appearance on the thallus of numerous pinholes occupied by developing nauplii.

• Korean Journal of Environmental Biology
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• v.17 no.1
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• pp.71-77
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• 1999

Phytoplankton communities were investigated 13 times during the period from November, 1995 to December, 1996 in the coastal area of Kori. A total of 162 taxa (including unidentified species) were observed； 120 diatoms, 3 silicoflagellates, 34 dinoflagellates, 2 euglenoids, 1 chlorophyte and 2 unidentified microflagellates. A diatom species, Skeletonema costatum (Greville) Clove dominated all the year round. The standing stocks of phytoplankton ranged from 94 cells/ml in August to 1059 cells/ml in July. The peaks of standing stocks occurred in February and July. The effects of thermal effluent to the phytoplankton communities changed seasonally and might affect increasing the standing stocks where about 1 ∼ 3 km from the discharge of Kori Nuclear Power Plant in autumn and winter. But the effects of thermal effluent must be negative in summer.

• Korean Journal of Ecology and Environment
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• v.35 no.2 s.98
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• pp.103-110
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• 2002

Seasonal changes of the phytoplankton community was investigated from July 2000 to April 2001 at the river bed lake, Jangjwa Lake in the Imjin River, which appeared to be the most natural condition. A total of phytoplankton were composed of 112 taxa, belonging to 5 divisions,83 species, 10 varieties,1 variety-form, 1 form and 17 unidentified species. Of those, the green algae and the diatoms were present during the investigation periods more frequently then the other taxa. The phytoplantton standing crops varied from $2,943{\times}10^3\;cells/l$ on April 2001 to $5,742{\times}10^3\;cells/l$ on January 2001. The phytoplankton standing crops had a continuous high value over $3,000{\times}10^3\;cells/l$ during the investigated periods and showed the highest value during winter period. The major dominant species were Aulacoseira granulata, Chlamydomonas nivalis v. kobayasii, Dinobryon sertularia, Mougeotia so. and Uroglenopsis americana. Among those, Chlamydomonas nivalis v. kobayasii was a major dominant species during winter period.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.31 no.1
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• pp.45-55
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• 1998

Phytoplankton community and primary productivity have been investigated in a fall season in the southern coastal waters of the last Sea, Korea. A strong thermocline formed at the 20\~60\;m$ layer and a cold water mass also existed in the bottom around Yong-il Bay. The offshore of the surveyed area was likely to be influenced by relatively warmer water, whereas the inshore represented Higher primary productivity with lower water temperature and lower salinity. A total of 133 species of phytoplankton occurred, representing 107 spp. of diatom, 23 spp. of dinoflagellate 3 spp. of silicoflagellate. Skeletonema costatum and Asterionellepsis glacialis were most predominant with more than $30\%$ dominance ratio, while Leptocylindrus danicus was also dominant at all transect lines. Standing crops of phytoplankton ranged from $2.7{\times}10^3\;to\;141.6{\times}10^3\;cell^{\ell-1}$. Chlorophyll a concentration varied with stations and layers, but the $30\~50$ m layer showed maximun with about $1.18{\mu}g{\ell}^{-1}$ rather than at the surface layer. It is believed that the maximun in standing crops and chlorophyll of phytoplankton formed at the $20\~50$ m layer above the thermocline during the survey. Phytoplankton primary productivity ranged from 0.32 to 3.04 mgC $m^{-3}\;hr^{-1}$, showing higher at the inshore than at the offshore. The range of integrated primary productivity was $263.3\~1085.5 mgC\;m^{-2}\;day^{-1}$ for the euphotic layer. Photosysthesis rates varied with the range from 0.76 to 8.04 mgC mgChl $\alpha^{-1}\;hr^{-1}$. Phytoplankton photosynthesis at the inshore was saturated at lower irradiance ($15\~35\%$ of surface) and showed higher efficiency, Thus, it revealed that the phytoplankton community probably adapted to the middle of euphotic layer because the depth of mixing layer became thinner due to the formation of thermocline.