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Butterfly Population Dynamics at Mt, Yudal, Mokpo, Korea  

기경자 (목포고등학교)
최세웅 (목포대학교 환경교육과)
Publication Information
Korean Journal of Environmental Biology / v.22, no.1, 2004 , pp. 35-42 More about this Journal
Abstract
To examine the species composition and population fluctuation of butterflies at Mt. Yudal, Mokpo, we collected butterflies from May, 2001 to April, 2002 by dividing the study site into four subyegions. As a result, seven families comprising 40 species were identified. The patterns of population fluctuations at the four subregions showed that the lower the elevation the higher the number of species and individuals. Monthly fluctuations of buttefly species produced an M-shaped curve, whereas those of individuals produced a monotonic curve with a maximum peak during August. To see effectively the changes of numbers of species and individuals, we calculated the indices of species richness and evenness by subregions and months. As a result, both indices fulfilled the primary criterion of independence and showed more or less negative association: when heterogeneity is higher, evenness is lower. Examination of butterfly populations over long-term periods might provide an evidence of global warming and a guideline to conserve and manage habitats.
Keywords
species richness; diversity index; evenness; global warming; conservation;
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