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李海浜,金胄弼,全正蘭 동국대학교 산업기술대학원 1993 산업기술논문집 Vol.1 No.-
An arthropod community structure in a rice peddy field ecocystem was investigated. Sampling was conducted using D-vac sucker at the Experimental Station of Dongguk University in Namyangju-Gun, Kyonggi province during the periods from August to October in 1992. During the period of investigation, 112 species, 34 families and 6 orders were represented for the insect cummunity in untreated plots, while 104 species, 41 families and 5 orders in treated plots. And among them, 45 and 31 species of entomophagous insect were listed from the untreated and treated plots with 17.5% vs 5.2% in the occupancy rate, respectively, suggesting that pesticide usage lead the reduced number of immigrating and emigrating natural enemies. The other hand, 25 species in 13 families of the spider were represented in the untreated plots whereas 15 species in 8 families in treated plots. Spiders which collected in untreated plots were twice as high in abundance as those in treated plots. Tetragnatha sp. (Tetragnathidae) was the most abundance species in treated plots. Dominant species of untreated plots, Piratasubpiraticus (Lycosidae), occurred in very low number in treated plots. During the growing season, the temporal pattern of species diversity are measured using species diversity (H'), species richness (S) and species evenness index (J'). The tendency of communities to return to its predisturbed state were observed in treated plots. The positive correlation was obtained for spider species diversity and prey abundance in untreated plots but in treated plots.