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KMID : 0613820080180070924
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Journal of Life Science
2008 Volume.18 No. 7 p.924 ~ p.930
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The Community Structure of Plant at the Edge of the Oncheon River in Busan
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Moon Sung-Gi
Huh Man-Kyu
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Abstract
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Community structure refers to the number of species in a community and the pattern of distribution of individuals among those species. The purpose of this paper was to describe a statistical analysis for detecting a ecological biodiversity which is valid even though the assumption at the different sampling points is not violated spatial randomness of species. Counts and cover were determined from 10 (20 m×20 m) plots in five sites of the Oncheon River which is located in Busan, Korea. Total 95 taxa (85 species, 9 varieties, and one form) were identified and measured in edge sides of this river. These were a total of present in the five sites. Overall across the fragments, mean number of species per plot differed significantly among the five sites (F=7.75, p＜0.01). Shannon-Wiener functions differed significantly among plots (F=4.12, p＜0.05), with the St. 1 having significantly higher value (2.380) than the others (2.206 for St. 2, 2.116 for St. 3, 2.069 for St. 4, and 0.637 for St. 5). The richness indices, R1 decreased from the upper stream of the Oncheon River to the lower stream. We used a novel way of representing community structure to show that abundance within closely related pairs of co-occurring species in the Oncheon River. The differences between the distributions for of congeners and pairs of non-congeners showed at the largest difference of the cumulative fractions of the data sets (x=0.85).
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KEYWORD
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Communitystructure, theOncheonRiver, congenerpairs, non-congeners
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