낙동강하구의 조류현황과 서식지 유형별 관리방안 연구

Abstract

The Nakdong River estuary region is internationally famous for migratory birds and their habitats. This thesis aimed to evaluate the wise and sustainable management of the Nakdong River estuary in accordance with avian habitat types, which was deduced by an 8-year analysis of bird status(2003？V2011) and a regional biotope reclassification. During the 8 years of monitoring, 232 bird species(48 families, 16 orders) were recorded, with the Mallard(Anas platyrhynchos) being numerically dominant(17.71% of total individuals). Winter visitors were the commonest phenological types, representing 38% of the total species and 63% of the total individuals. Regionally, Eulsook Island, the West Nakdong River, the Myungji tidal flat, and the Bakhap？EDoyo islets were top-ranking habitats in terms of species and individuals. For wise and sustainable management of the Nakdong River estuary, target species were selected by analysis of bird status, literatures survey and habitat types for these regions were adopted by biotope reclassification of that region. For wise and sustainable management of the Nakdong River estuary, target species were selected based on an analysis of bird status, literature studies, and habitat types in the region. On the basis of their phenological and taxonomic characteristics, we selected the following 5 target species: Whooper Swan(Cygnus cygnus), Bean Goose(Anser fabalis), Dunlin(Calidris alpina), Little Tern(Sterna albifrons), and Eurasian Coot(Fulica atra). Habitat types were classified into the following 11 types: artificial area, arable land, reed field, tidal flat, Scirpus planiculmis community, sandbar, forest, grassland, waterway, area of brackish waters, and area of fresh waters. Lastly, management plans for the Nakdong River estuary are proposed based on the threats posed to the different habitat types.