• Title/Summary/Keyword: Southern Coast

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Spatial and Temporal Distribution of Fish Larvae in the Southern Coast of Korea from Spring to Summer (봄과 여름철 남해안 자치어의 시·공간적 분포)

  • Moon, Seong Yong;Lee, Mi Hee;Jung, Kyung Mi;Kim, Heeyong;Jung, Jin Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.55 no.4
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    • pp.461-477
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    • 2022
  • We investigated the community structure and performed detailed characterization of fish larvae assemblages collected from the southern coast of Korea in the spring and summer of 2021. The total abundance of fish larvae varied from 193.6 to 1,915.6 ind. 10 m-3. The species were distributed across 10 orders with 23 families, and 41 taxa. The dominant taxa were Gobiidae spp., Engraulis japonicus, Nibea albiflora, Sebastiscus spp., Callionymus valenciennei, Pennahia argentata, Sebastes thompsoni, Parablennius yatabei, and Platycephalus indicus. Engraulis japonicus individuals were collected from April to August and their presence contributed greatly to the total abundance of fish larvae. The total number and abundance of species peaked in early summer and the Shannon-Weaver index was in the range 0.11-1.49. Redundancy analyses revealed that the major environmental factors affecting the fish larvae assemblage differed according to the dominant taxa. Water temperature, zooplankton density, and Paracalanus parvus s. l. density were the key factors affecting the spatial and temporal distribution of fish larvae in the southern coast of Korea in spring and summer.

Uplift Rate Map and Distribution of Uplift Rate in the East Coast of the Korean Peninsula (동해안의 융기율도와 융기율 분포)

  • Lee, Gwang-Ryul;Park, Chung-Sun
    • Journal of The Geomorphological Association of Korea
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    • v.27 no.1
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    • pp.47-60
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    • 2020
  • This study tried to produce an uplift rate map and reveal the spatial distribution of the rate with topographical characteristics and absolute ages on marine terrace in the East Coast of the Korean Peninsula. Based on a total of 57 ages at 26 sites from previous study and 13 ages at 13 sites from this study, the coast showed the rates ranging from 0.145 m/ka to 0.410m/ka with an average of 0.258 m/ka. The highest and lowest rates were found from the Jeongdongjin area in Gangneung and the Goraebul area in Yeongdeok, respectively. However, some areas in the coast showed large differences in the rate among the sites. In addition, areas with only 1 age were also found, indicative of low reliability. This study suggests that a more reliable and precise interpretation on the rate can be made with more ages identified, especially in Goseong to northern part of Gangneung, middle and southern parts of Samcheok and Yeongdeok, southern part of Pohang to northern part of Gyeongju, and Ulsan.

A Summer Marine Benthic Algal Flora and Community of Uninhabited Islands in Haenamgun, Southern Coast of Korea (남해안 해남군 무인도서의 하계 해조상 및 군집)

  • Oh Byoung Geon;Lee Jae Wan;Lee Hae Bok
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.35 no.1
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    • pp.57-63
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    • 2002
  • The marine algal flora and community of uninhabitated islands in Haenamgun, southern coast of Korea, were investigated during 12$\~$29, June, 1999. As the results, a total of 87 species including 10 greens, IS browns and 62 reds was identified. The dominant species were Ulva pertusa and Sargassum thunbergii and the subdominants were Myelophycus simplex, Ishige okamurae, Hizikia fusifomis, Gloiopeltis furcata and Chondracanthus intermedius. The vertical distribution pattern of intertidal marine algae represented three distinct zones; Gloiopeltis furcata, Caulacanthus okamurae, Myelophycus simplex-Gloiopeltis complanata, G. tenax, Gelidium divaricatum, Ulva pertusa, Sargassum thunbergii-Hizikia fusiformis, Pelvetia babingtonii, Chondrus ocellatus, Undaria pinnatifida, Ecklonia lava from upper to lower zones.

New Records of Marine Algae from KoreaⅠ

  • Oak, Jung-Hyun ;Keum, Yeon-Shim;Hwang, Mi-Sook;Oh, Yoon-Sik
    • ALGAE
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    • v.17 no.3
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    • pp.145-151
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    • 2002
  • Three species of marine algae, two browns and one red were newly reported from the eastern and the southern coast of Korea including Cheju Island. their vegetative and reproductive structures were described. Colpomenia phaeodactyla Wynne et J.N. Norris (Scytosiphonaceae, Phaeophyceae) commonly occured in middle to lower intertidal zone of southern coast. Plants consisted of clusters of elongated and hollow sacs arising from an adherent colpomenioid base. Plurilocular sporangia were multiseriate, forming dense, extensive sori over the erect sacs. Cutleria adspersa (Mertens ex Roth) De Notaris (Cutleriaceae, Phaeophyceae) was collected from subtidal region of Cheju Island. It was characterized by broadly fan-shaped habits with golden brown colour and hair-fringed margines, attached by rhizoids along undersurface. Halarachnion latissimum Okamura (Furcellariaceae, Rhodophyceae) was found adrift from several areas of southern coast. Plants were brownish red, filmy and dlicate, membranaceous roundish fronds. Cystocarps were globular and formed under the cortical layer. Tetrasporangia were oblong and zonately divided.

New Records of Marine Algae from Korea II

  • Oak, Jung-Hyun;Keum, Yeon-Shim;Hwang, Mi-Sook;Oh, Yoon-Sik
    • ALGAE
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    • v.20 no.3
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    • pp.177-181
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    • 2005
  • Two species of marine algae, Fauchea spinulosa Okamura et Segawa (Rhodymeniaceae, Rhodophyceae) and Stictyosiphon soriferus (Reinke) Rosenvinge (Chodariaceae, Phaeophyceae) were newly collected from the southern coast and Cheju Island of Korea. Fauchea spinulosa was collected from subtidal zone in the insular region of the southern coast. Plants were erect from the discoidal holdfast with short stipe, pinkish to deep red, cartilageneous, dichotomously and flabellately branched, and 10-15 cm high, 5-15 mm broad. Tetrasporangia are cruciately divided and nemathecia occurred on a side of the branches. Cystocarps were mostly coronate in marginal area and spermatangia were scattered on both sides of branches. Stictyosiphon soriferus commonly occurs on muddy and sandy intertidal flat of Namhaedo located on the southern coast. Plants are epilithic, light brown, terete, 3-5 cm high, and branched heavily in irregular or alternate manner, arising from a small holdfast with rhizoidal clumps. Plurilocular sporangia were scattered in patches and slightly swollen above the cortex of the whole filament. Unilocular sporangia were not found.

Studies on Anisakis spp. (I) On the infection rate of Anisakis-like larvae isolated from various marine fishes. (Anisakis 류에 관한 연구 (I) 각종 해산어에 있어서의 Anisakis류 유충의 분포)

  • CHUN Seh Kyu;CHUNG Bu Kwan;Ryu Bong Suk
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.1 no.1
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    • pp.1-7
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    • 1968
  • Formerly T. Nishimura, T. Oshima and M. Otsuru studied on Anisakis-like larvae in the various marine fishes from the Japan Sea and the Pacific Ocean. In the present observation, many kinds of marine fishes from the Yellow Sea and the southern coast of Korea were. studied, with the samples from the islands: Eocheng-do, Sohuksan-do, Chuja-do and Keomun-do. The authors examined 313 samples from the adjacent waters of Korea and the distribution of the Anisakis-like larvae in the fish body was found to be 9,219 larvae of Anisakis-like larvae found in the mesentery and coelomic cavity of all samples. Of them, 8,112 Anisakis-like larvae were found from 187 samples from the southern coast of Korea, 1,107 Anisakis-like larvae were found in 126 samples from the Yellow sea (Tables 1 & 2). The fish from the southern coast of Korea are much more infected than the fish from. the Yellow Sea. The larger the fish length, the heavier infection of Anisakis-like larvae were observed.

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Unusual Mitochondrial DNA Polymorphism of the Blue Mussel (Mytilus edulis) Species Complex on the Southern Coast of Korea

  • Iksoo Kim;Byung-Yoon Min;Myung-Hee Yoon;Myong-Suk Yoo;Doh-Hoon Kim
    • Animal cells and systems
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    • v.3 no.1
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    • pp.79-87
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    • 1999
  • Mitochondrial DNA (mtDNA) from 54 specimens of the blue mussel (Mytilus edulis) species complex sampled from the southern coast of Korea was assayed for polymorphism with a portion of the COIII gene (336 bp). Fifteen haplotypes were found. PAUP, one-step networks, and PHYLIP analyses revealed the presence of two clearly differentiated mitochondrial clades (termed clades B and E), separated by 3.6% of minimum sequence divergence. The distribution pattern of the species appears to be consistent with category II of the phylogeographic pattern sensu (Avise et al., 1987): the presence of two discontinuous and distinct mtDNA genotypes in the same geographic region. This unusual mitochondrial polymorphism was explained by the presence of the Mediterranean species, M. galloprovincialis, possessing mtDNA of both M. galloprovincialis and M. edulis.

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Occurrence and Food Ingestion of the Moon Jellyfish (Scyphozoa: Ulmariidae: Aurelia aurita) in the Southern Coast of Korea in Summer (하계 한국 남해안 보름달물해파리 (Scyphozoa: Ulmariidae: Aurelia aurita)의 출현 및 먹이섭취 습성)

  • 강영실;박미선
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.8 no.2
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    • pp.199-202
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    • 2003
  • Monthly occurrence of the moon jellyfish (Scyphozoa: Ulmariidae: Aurelia aurita) was investigated in the southern coast of Korea in summer. The relationships not only between weight and length but also between length and food (rotifer and Artemia sp.) ingestion were also studied. Aurelia was monthly sampled 5 or 6 times at the coastal area between Jinhae and Geoje-do with a landing net (mouth: 30 cm, mesh size: 2 cm) at surface from June to August,2001. Aurelia aurita was dominated by 6-9 cm in June, 7-16 cm in July and 16 cm in August in bell diameter. The bell diameter was significantly related with weight (r=0.930, P<0.001). The ingestion rate was significantly different according to bell diameter and food density (ANOVA test: P<0.001).

Gonadal Abnormality and Intersexuality of Oplegnathus fasciatus (Teleostei: Oplegnathidae) Collected from the Southern Coast of Korea: A Case Report

  • Choi, Ji Sung;Shin, So Ryung;Kim, Hyeon Jin;Kim, Hyejin;Kim, Yeonghye;Lee, Jung Sick
    • Development and Reproduction
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    • v.25 no.3
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    • pp.123-131
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    • 2021
  • We report on the gonadal structure abnormality and intersexuality found from a survey regarding the reproductive potential of the rock bream, Oplegnathus fasciatus, along the southern coast of Korea. In total, 448 samples were collected for histological analysis (total length 27.5±6.8 cm; total weight 522.9±385.6 g). The sex ratio (F:M) was 1:0.46 (n=307:141), with 68.5% being females. The frequency of oocyte atresia and ovarian neoplasm in the females was 85.3% and 21.5%, respectively, and the frequency of testicular lobule and cyst deformation and testicular neoplasm in the males was 73.1% and 37.6%, respectively. The scale formation in the ovary and testis was approximately 2.0% for both sexes. The intersexuality was 42.2%, with the intersexuality among females being 49.5%, which was significantly higher than that of males (26.2%). Such findings indicate a negative impact on the reproductive output of the rock bream along the southern coast of Korea; however, a more detailed study is required to ascertain accurate causes.

A Study on the Spatial Change of Busan Nambin Coast from 1895 to 1936 (1895~1936년 부산 '남빈해안(南濱海岸)'의 공간변화 연구)

  • Song, Hye-Young
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.35 no.6
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    • pp.59-68
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    • 2019
  • The purpose of this study was to analyze the spatial change of coastal area called Nampo-dong in Busan. And then the subject of research was chiefly concentrated upon the development of southern coast and the land-reclamation based on the commercial facilities after the opening port. There were various reclamation projects in the coastal area of Japanese settlement under the Rule of Japan. Busan Nambin Coast(Currently, Nampo-dong) was one of typical reclamation projects conducted in the southern seashore. Due to the characteristic of coastal area, fishery was developed well and the entertainment industry also grew rapidly with the characteristic of the short distance of urban centre. In this study, we investigated the process of reflecting the characteristic of spatial change that were pursued by communities at that time, particularly through the establishment and change of buildings.