• 제목/요약/키워드: island development

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제주도 연안의 해조류 분포 특성을 이용한 생태학적 평가 (Ecological Evaluation Using Seaweed Distribution Characteristics along the Coast of Jeju Island)

  • 조성환;노영석;원승환;김수강;정상목
    • 한국환경생태학회지
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    • 제36권6호
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    • pp.627-638
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    • 2022
  • 본 연구는 제주도 연안의 해역별 해조류 분포특성을 비교하기 위하여 2018년 5월부터 12월까지 제주도 본섬 4개 정점과 유인도서 2개 정점의 마을어장에서 수행되었다. 해조류는 총 101종으로 녹조류 13종(12.9%), 갈조류 24종(23.8%) 그리고 홍조류 64종(63.4%)이 출현하였다. 계절별로는 5월에 가장 많은 해조류가 출현하고, 10월에 가장 적게 출현하는 전형적인 온대해역의 특징을 나타냈다. 수심별 해조류 출현 종수는 5m와 8m에서는 66종과 65종으로 유사하였으며, 12m에서는 74종으로 최대였다. 해역별로는 도서해역인 우도에서 66종으로 가장 많은 해조류가 출현하였고, 본섬의 동부 표선에서 27종으로 가장 적게 출현하였다. 출현종 가운데 중요도가 높은 해조류는 감태(Ecklonia cava)와 둘레혹산호말(Corallina crassissima)로 각각 21.1%와 20.3%를 나타냈으며, 방황혹산호말(Corallina aberrans) 9.2%, 에페드라게발(Amphiroa ephedraea) 6.2% 그리고 큰열매모자반(Sargassum macrocarpum) 4.4%의 중요도를 나타냈다. 해조류 중 산호말류는 평균 11.2종이 출현하였고, 각 해역의 산호말류 중요도는 평균 32.6%로 우도에서 14.7%로 가장 낮았고, 표선에서 가장 높은 41.0%를 차지하였다. 해조류 군락의 생태학적 평가지수(EEI)는 2.1~10.0으로 표선의 5월과 6월 12m에서 가장 낮았고, 그 밖의 다른 해역에서는 평균 7.3이상으로 좋은 상태를 나타냈다. 본 조사에서 설정한 생태등급기준 I 등급은 우도와 추자도의 수심 12m이었으며, II 등급은 사계와 추자도의 수심 5 m와 8 m가 해당되었다. III 등급은 표선과 귀덕2의 수심 5m와 12m, 평대의 수심 5m와 8m가 해당되었으며, IV 등급은 귀덕2의 수심 8m가 해당되었다.

Complete mitochondrial genome of the Japanese oak silkmoth, Antheraea yamamai (Lepidoptera: Saturniidae), from Jeju Island, Korea

  • Kim, Kee-Young;Park, Jeong Sun;Lee, Keon Hee;Kim, Min Jee;Kim, Seong-Wan;Park, Jong-Woo;Kang, Sang-Kuk;Kim, Nam-Suk;Kim, Iksoo
    • International Journal of Industrial Entomology and Biomaterials
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    • 제44권2호
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    • pp.65-71
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    • 2022
  • The wild silkmoth Antheraea yamamai Guérin-Méneville, 1861 (Lepidoptera: Saturniidae) is an important producer of silk that is superior to the silk produced by traditional domesticated silkworm. In this study, we sequenced the complete mitochondrial genome (mitogenome) of An. yamamai collected from Jeju Island, which is the southernmost island approximately 100 km offshore southward from the Korean Peninsula. Determining this sequence will be necessary for tracing the biogeographic history of the species and developing molecular markers for identifying the origin of commercial products. Comparison of the sequence divergence among two available and the current mitogenomes revealed a low but substantial number of substitutions, totaling 23 nucleotides in the whole genome. CytB and ND5 showed the highest variability with five and four variations, respectively, suggesting that these regions will be prior regions to target for subsequent biogeographic and diagnosis study. Phylogenetic reconstruction based on all available sequences of Saturniidae showed that An. yamamai is a sister to the congeneric species An. pernyi, corroborating that Antheraea is a highly supported monophyletic group. The tribe Saturniini was clearly non-monophyletic and interrupted by Attacini and Bunaeini.

Development of CpG Island Search Tool

  • Kim, Ki-Bong
    • 한국생명과학회:학술대회논문집
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    • 한국생명과학회 2006년도 제47회 학술심포지움 및 추계국제학술대회
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    • pp.35.2-35.2
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    • 2006
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2007년 남해안 멸치의 산란밀도와 어장가입 (Spawning Density and Recruitment of Janpanese Anchovy, Engraulis japonica in the Southern Sea of Korea in 2007)

  • 차병열;양원석;김주일;장선익;추은경;박주삼
    • 한국어류학회지
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    • 제20권3호
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    • pp.190-197
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    • 2008
  • 우리나라 남해안에서 멸치의 주 산란기인 2007년 5월부터 8월까지 멸치 난자치어의 분포와 해양환경요인과의 관계를 분석하고, 권현망에 의한 해역별 어획량과 체장조성 자료와 종합하여 멸치의 시공간 분포 변화를 분석하였다. 1. 멸치의 난은 5월부터 8월까지 분포하였으나, 분포밀도는 7월에 가장 높고 8월에 가장 낮았다. 2. 난의 주 분포해역은 남해도와 거제도 간 해역이며, 난이 많이 채집된 곳의 수온범위는 $15{\sim}24^{\circ}C$, 그리고 염분범위는 32~34이었다. 3. 멸치의 자치어의 분포밀도는 난의 분포와 같이 남해도와 거제도 간 해역에서 높았다. 4. 고흥반도와 거제도 간 해역에서 권현망어업에 의한 2007년 멸치 어획량은 통영이 11,409톤, 마산이 4,137톤, 사천이 2,487톤, 그리고 여수가 4,411톤으로 대부분이 남해도와 거제도 사이 해역에서 어획되었다. 5. 고흥반도와 거제도 간 해역에서 권현망어업에 어획된 멸치는 3~4월에는 큰 멸치(4.6 cm 이상)가 많았고, 8월 이후에는 0.7 cm의 소형에서부터 13.0 cm의 대형 크기까지 분포하였다. 작은 멸치(4.6 cm 미만)는 연안측 가까이에서 많이 분포하였고, 큰 멸치(4.6 cm 이상)일수록 어장의 외해측에 분포하여 멸치는 내만측에서 어린 시기를 보내고 성장하면서 외해측으로 이동 확산해 나가는 것으로 볼 수 있다.

울릉도의 약용식물 (Medicinal Plants in Ulleung Island, Korea)

  • 이중효;홍성천
    • Current Research on Agriculture and Life Sciences
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    • 제23권
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    • pp.19-31
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    • 2005
  • This study was carried out in order to provide the basic information for the development of medicinal plants in Ulleung island, Korea. This area had very rich and diverse flora; 495 taxa with l05 familes, 231 genera, 418 species, 1 subspeies, 63 varieties and 13 forms. The 94 medicinal plants were distributed in Ulleung. They were composed of 10 endemic species, 22 rare species and 62 economic species respectively.

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First Record of the Genus Pagurixus (Crustacea: Decapoda: Anomura: Paguridae) from Hyung-ge Island, Southern Korea

  • Kim, Mi-Hyang;Kim, Jung-Nyun;Oh, Chul-Woong
    • Animal Systematics, Evolution and Diversity
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    • 제27권2호
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    • pp.176-179
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    • 2011
  • A pagurid hermit crab, Pagurixus patiae collected from Hyung-ge Island, Busan, southern Korea is newly recorded into the Korean fauna. Pagurixus patiae is the only species of the genus recorded in Korea. Morphological descriptions of P. patiae are provided.

Expressed Sequence Tag Analysis of Antarctic Hairgrass Deschampsia antarctica from King George Island, Antarctica

  • Lee, Hyoungseok;Cho, Hyun Hee;Kim, Il-Chan;Yim, Joung Han;Lee, Hong Kum;Lee, Yoo Kyung
    • Molecules and Cells
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    • 제25권2호
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    • pp.258-264
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    • 2008
  • Deschampsia antarctica is the only monocot that thrives in the tough conditions of the Antarctic region. It is an invaluable resource for the identification of genes associated with tolerance to various environmental pressures. In order to identify genes that are differentially regulated between greenhouse-grown and Antarctic field-grown plants, we initiated a detailed gene expression analysis. Antarctic plants were collected and greenhouse plants served as controls. Two different cDNA libraries were constructed with these plants. A total of 2,112 cDNA clones was sequenced and grouped into 1,199 unigene clusters consisting of 243 consensus and 956 singleton sequences. Using similarity searches against several public databases, we constructed a functional classification of the ESTs into categories such as genes related to responses to stimuli, as well as photosynthesis and metabolism. Real-time PCR analysis of various stress responsive genes revealed different patterns of regulation in the different environments, suggesting that these genes are involved in responses to specific environmental factors.

Bacterial Diversity of Culturable Isolates from Seawater and a Marine Coral, Plexauridae sp., near Mun-Sum, Cheju-Island

  • Lee, Jung-Hyun;Shin, Hyun-Hee;Lee, Deuk-Soo;Kwon, Kae-Kyung;Kim, Sang-Jin;Lee, Hong-Kum
    • Journal of Microbiology
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    • 제37권4호
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    • pp.193-199
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    • 1999
  • Fifty-eight strains showing different colony morphological characteristics on various media were isolated from marine coral (Plexauridae sp.) and ambient seawater near Mun-Sum, Cheju-Island in 1998. Bacterial diversity was studies by phylogenetic analysis of the partial 16S rRNA gene sequences. All isolates representing the bacterial domain included affiliates of the high G+C (59%) and los G+C (3%) subdivision of Gram positive bacteria, and the alpha (33%) and gamma (5%) subdivision of the Proteobacteria. The 16S rDNA sequence similarity of the isolates was in the 88.3 to 100% range (average, 95.6%) to reported sequence data. In the comparison of the isolates from marine coarl and ambient seawater, more diverse groups belonging to ${\alpha}$-Proteobacteria were preferentially obtained from seawater.

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제주도 함덕 연안의 정치망 어획량 변동 (Seasonal Variation of Fish Catch by a Set Net in Hamdeuk Fishing Ground off Jeju Island)

  • 차병열;장대수;김병엽
    • 한국수산과학회지
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    • 제37권1호
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    • pp.65-72
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    • 2004
  • Fish catch by a set net in Hamdeuk fishing ground off Jeju Island were studied to determine seasonal variation of species composition and catch from 1998 to 2000. A total 72,022.9 kg was caught during the survey period, including Scomber japonicus and Trachurus japonicus of $76.4\%$ in the total. The other dominant species were Siganus fuscescens, Loligo chinesis, Seriola dumerili, Sepioteuthis lessoniana, Sardinops melanostictus, and Seriola lalandi accounting to $20.0\%$ of the total. The fishing period conducted by a set net in Hamdeuk fishing ground were from May to November. The catch by a set net were higher in summer than in spring and autumn and closely related with the seasonal variation of sea water temperature. The catch was higher in 1998 than In 1999 and 2000, which was related to the sea water temperature in fishing ground.