• Title/Summary/Keyword: 해초

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Taxonomy of Ascidians from Geojedo Island in Korea (한국 거제도 해초류의 분류)

  • Boon Jo Rho;Kyung-Sook Park
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.3
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    • pp.173-192
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    • 1998

  • This study was made as a part of the benethic fauna of Geojedo Island. The material was obtained from 17 localities (Fig. 1) along the coastal sea of Geojedo Island and it's adjacent waters during the years 1995-1998. This paper includes 38 species from a limited area of the southern part of Korea and includes 13 previously known species by Rho(1975-1991). Of these Didemnum (D.) pardum, Symplegma oceania, and Styela coriacea, are new to the Korean fauna, and 22 species are newly added to the fauna of Geojedo Island. We provided taxonomic notes and brief notes on the ascidian fauna, and the biogeographical distribution of Geojedo island. Its ascidian fauna are characterized by a high percentage of 18(47.4%) warm-water species and the extreme scarcity of eight(21.1%) boreal-water forms. This result may be attributable to the fact that Geojedo island and its adajacent waters are located under the influence of the warm Kuroshio Current.

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Two Species of Notodelphyid Copepoda (Cyclopoida) Associated with Solitary Ascidians (Tunicata) (단체 해초류(피낭류)에 공생하는 요각류 2종)

  • 서인순;이경숙
    • Animal Systematics, Evolution and Diversity
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    • v.12 no.4
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    • pp.289-304
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    • 1996

  • Notodelphyid copepods taken from Ascidians, Ascidia samea (Oka) and Ascidia sp. which had been collected in the East sea and the Korea Strait are reported. These copepods are Lonchidiopsis hartmeyeri Vanh ffen, 1917 and Pachypygus curvatus Ooishi 1961, and are redescribed as new records to the Korea fauna.

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Ascidians of Tangsa and its Adjacent Waters in Korea Strait (대한해협의 당사 및 인근 수역 해초류의 분류)

  • 노분조;최병래;송준임;이영자
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.39-53
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    • 2000

  • The ascidians specimens were collected from Tangsa and its adjacent waters in Korea by scuba divers during the period from 1994 to 1999. They were identified into 30 species which are reported for the first time in Tangsa. Out of them one species, Molgula hozawai, was turned out to be new to the Korean fauna, and six species, such as Eudistoma illotum, Symplegma connectans, Boltenia trasversaria, Microcosmus nultitentaculatus, Pyura squamata and Molgula hozawai, were newly recorded in Chundo Island and Geojedo Island, which are influenced by warm waters of the Kuroshio Current.

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Seasonal Changes of Community Structure of Phytoplankton in Three Korean Seagrass Beds (한국연안 3개 해초지 표층수에서 식물플랑크톤 군집구조의 계절 변화)

  • Lee, Sang-Yong;Lee, In-Woo;Choi, Chung-Il
    • Ocean and Polar Research
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    • v.28 no.2
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    • pp.95-105
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    • 2006

  • To clarify the seasonal changes of the phytoplankton community in seagrass beds, the abundance and distribution of phytoplankton, and environmental factors were measured in seagrass beds: in the Dongdae Bay and Aenggang Bay on the southern coast of Korea, and off Seungbong Island on the western coast of Korea, in October 2002, January, March, and June 2003. Water temperature, salinity, SPM, chlorophyll a, aboveground biomass of seagrass, DIN and DIP concentrations significantly changed within the sampling time. The taxa of phytoplankton observed in seagrass beds were classified as 3 divisions, 3 classes,4 orders,16 families, 27 genera, 65 species. 50 species of diatoms were recognized with 14 species of dinoflagellates, and 1 species of silicoflagellate. The species of genera Coscinodiscus and Thalassiosira were dominant all around the study areas but Peridinium granii, Eucampia zodiacus and Pleurosigma elongatum were seasonally dominant. Phytoplankton standing crops varied from minimum of $0.6{\times}10^3\;cells\;l^{-1}$ (June, Dongdae Bay) to maximum$21.1{\times}10^3\;cells\;l^{-1}$(March, Aenggang Bay). The standing crops and species composition of phytoplankton were relatively lower and simpler than those of other southern and western coastal areas. Seasonal variations of diatom standing crops in seagrass beds were attributed to seasonal changes in DIN and in DIP of water column.

  • https://doi.org/10.4217/OPR.2006.28.2.095 인용 PDF