Comparison of Bird community in Urban and Non-Urban area at Young-San river

This Study was carried out for the period from June 2003 until March 2005 aimed at comparing the characteristics of birds communities between non-urban district and urban district in the Yeongsan River basin, grasping the influence on the birds in the urban district basin, and ultimately exploring the method of preserving and managing the birds in a proper manner. The number of birds observed in this study recorded 83 species 19,322 individuals in total where the number of species were 73 in non-urban district while 71 in urban district. For the number of individuals showing larger number in urban district, 7,409 were in non-urban district while 11,913 were in urban district. For the species diversity, urban district was 2.62 while non-urban district was 3.01 showing high degree in non-urban district. For the number of individuals by bird group, Herons and Ducks were higher in the Site 6 (urban)/Site 7 (urban) while Raptors were higher in the Site 3 (non-urban) and Site 8 (urban), and Shorebirds were higher in the Site 3 (non-urban). Forest birds were found the highest in the Site 1 (non-urban), while Others higher in the Site 1 (non-urban), Site 6 (urban), and Site 8 (urban). With regard to species composition by districts, those in non-urban district consisted of Forest birds (46.1%), Ducks (43.4%), Herons (5.3%), Shorebirds (2.6%), Others (2.2%), and Raptors (0.4%) in order of high to low composition, while urban district consisted of Ducks (75.5%), Forest birds (16.1%), Herons (5.3%), Others (2.2%), Shorebirds (0.7%), and Raptors (0.2%) in the afore-mentioned order. In result, a great difference was shown between non-urban district and urban district in the Yeongsan River basin. Accordingly when implementing environmental improvement in urban district, it is deemed necessary to do it taking the inhabiting environment of non-urban district into account in order for a stable maintenance, preservation, and management of the birds communities.