• Title/Summary/Keyword: Laurencia complex

Search Result 3, Processing Time 0.014 seconds

Summer Algal Communities in the Rocky Shore of the South Sea of Korea -1. Intertidal Communities- (남해의 하계 해조군집 -1. 조간대-)

  • KANG Rae-Seon;JE Jong-Geel;HONG Jae-Sang
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.26 no.1
    • /
    • pp.49-62
    • /
    • 1993
  • Structure of intertidal algal communities of the islands on the South Sea of Korea was studied in summer of 1987 and 1988. The area includes Manjedo, Ch'ujado, Kwantaldo, Munsom, Yosodo, Komumdo, Soridi, Yokchido, Pijindo and Hongdo. Three biologically distinct zones, were commonly recognized in the intertidal bulk of the all examined islands. In the high intertidal zone, only a few species showing thin, tubular and sheet like forms were observed, and the most abundant species was Gloiopeltis spp.. Corallina pilulifera, Hizikia fusiformis and Chondria crassicaulis were most abundant species of the mid intertidal zone, which was formed near the mean sea level. The structure of the low intertidal zone was much more complex than the high and mid, the most abundant species were Laurencia spp. and Sargassum sagamianum. All of the coarsely branched and articulated calcareous species were distributed below mean sea level.

  • PDF

Quantitative Analysis of the Structure and Dynamics of Benthic Marine Algal Communities at the Southern Coast of Korea 1. Yonhwa-do, near Chungmu (한국 남해안 동부 해역 해조 군집 구조 및 변동의 정량적 분석 1. 연화도)

  • SOHN Chul Hyun;LEE In Kyu;KANG Jae Won
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.19 no.3
    • /
    • pp.265-273
    • /
    • 1986
  • The marine algal communities of Yonhwa-do at the southern coast of Korea were investigated in aspects to quantitative analysis of their structure and dynamics. As a result, 114 species, including 2 blue-green, 69 red, 25 brown and 18 green algae, were identified. The R/P value(2.8) is higher than that of other regions of the southern coast of Korea. Sheet and filamentous groups of the functional groups of algae showed higher composition rate in spring and summer than in autumn and winter, but coarsely branched and thick leathery groups showed an opposite tendency. Cluster analysis based on species presence suggested the existence of 5 distinct groups in spring, but 3 groups in the other seasons. The species exhibiting important value above 20 were as follows: Porphyra suborbiculata, Corallina pilulifera, Hizikia fusiforme, Sargassum thunbergii, Undaria pinnatifida, Ishige okamurai, Chondria crassicaulis, and crustose coralline algae. The coverage of algal communities composed only of crustose coralline algal complex was higher than that of other algal complex, but occurrence frequency of these two communities was indifferent. It is suggested that the occurrence in high quantity of crustose coralline algae from this area is related to grazing by herbivorous animals.

  • PDF