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KMID : 0613820120220101286
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Journal of Life Science
2012 Volume.22 No. 10 p.1286 ~ p.1294
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Community Structure and Diversity across Spatial Scales of Macrobenthos in the Seomjin River
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Huh Man-Kyu
Joo Woo-Hong
Choi Choo-Joo
Seo Jeoung-Yoon
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Abstract
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Biological assessments of the macrobenthos community were carried out in the Seomjin River from May 2009 to November 2010. Fishes from 106 species belonging to 24 families and 10 orders were collected from the survey sites. Locational dominant species differed among sites, and the numbers of species and individuals differed depending on site, although six sites were not significantly different on the same survey dates. Across sites, the average number of species was 38.3, ranging from five at site 1 to 66 at site 2 in May 2009. Site 2 had the highest number of species on November 2009, while site 3 had the lowest. Arthropods dominated the macrobenthic community at species (63.2% May) and individual (60.9% November) levels. DO, BOD, and COD were shown to have the greatest effect on the numbers of macrobenthos. Peaks in the diversity index trended downwards from upstream to downstream sites.
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KEYWORD
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Macro-benthos, environmental factors, Seomjin River, diversity index
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