We tried to investigate the biodiversity in Yeonpyeong-do Island and the relationship between surrounding environment and ecosystem of other Islands, in order to, eventually, contribute to biodiversity conservation as well as to management of West-coastal islands in Incheon, Korea. Insect had been collected at Yeonpyeong-do Island from April to October, 2010. A total of 209 species of 65 families under 10 orders were identified through this study. Therefore, the species composition of insect over each result from Yeonpyeong-do Island was a total of 10 orders, 77 families, 286 species including 1 endangered species, Lethocerus deyrollei (Vuillefroy), 3 endermic species, 4 management of exotic species and 43 designated species; 93 species of Lepidoptera (32.51%) which is the highest, 50 species of Coleoptera (17.48%), 37 species of Hymenoptera (12.94%) and 33 species of Homoptera (11.54%).
This study was conducted to investigate the moth fauna of the Bigeum-do Island in 2011. A total of 160 species of 15 families was identified. Noctuidae with 60 species was dominant in the area followed by Geometridae (37 species) and Crambidae (16 species). The most dominant species was a noctuid moth, Euproctis pulverea (126 individuals).
In order to qualitatively examine the spider fauna of Bangtaesan (Mt.) of Inje-gun, Gangwon-do, 4 collection sessions were conducted between May and October of 2010. A total of 479 spiders were collected in Bangtaesan (Mt.), at 128 species of 86 genera in 27 families, and coniferous forest zone or mixed tree forest zone, characterized by the dominance of conifers, displayed higher number of species than decideous forest zone. In terms of family, Linyphiidae included the highest number of species (18 species, 14.1%), followed by Theridiidae (16 species, 12.5%), Araneidae (14 species, 11.0%), Salticidae (13 species, 10.2%) and Tetragnathidae (9 species, 7.0%). Four species, Nesticella mogera of family Nesticidae, Clubiona lena of Clubionidae, Phrurolithus sinicus of Corinnidae and Synagelides zhilcovae of Salticidae, were discovered for the first time in Korean mountains. Zoogeographically, spiders in Bangtaesan (Mt.) displayed 1 cosmopolitan species, with holarctic region and palearctic region species making up 14.1% and endemic species making up 7.8% of the species observed during the study. This shows that spider fauna of Bangtaesan (Mt.) experience northern influence. The result of this study provides an inventory of mountain spiders and information regarding the region's biodiversity, and the results will not only become useful for the effective management and long-term use of national biological resources, but will also become a highly important data for the preservation of biodiversity based on changes in distribution, time and space.