A Research for Shorebirds on the Southernmost of Nakdong Estuary

Estuary islets should be managed systematically because they are important places for birds torest and breed. This paper investigates the environmental properties of islets where the sand banks are located from east to west on the southernmost of Nakdong estuary during a year (September 2003 ~ August 2004). The research showed that 59 species and 19,148 individuals were found in the area A (JangjaShinja-Do) and 61 Doyodeung). Totally, 74 species and 47,539 individuals were observed in both of this estuary. Shorebirds are the most observed species in both areas. In area, most of individuals were especially observed in the spring when Shorebirds migrate northward for breeding. In B area, various species were also observed in the fall when they migrate southward for wintering. Therefore, many groups of birds are observed around Shinja-Do in the spring. They passed the winter in Doyodueng, associated with feeding in the main stream of Nakdong river mainly. Although the southernmost sand bar is the breeding place to access to outside without interception, invasion by human beings and predators (mice, weasels and etc.) gives a fatal blow for birds to breed or rest. The reed which is a tall herbaceous plant is flourished according to the process of ecological sucin reduction of habitats and breeding grounds for birds. In conclusion, these areas where birds can use the islets as habits and breeding places must be preserved by restraining luxuriance of reeds and systematic management of human beings and predators is necessary.

keywords: Islet, Predator, Shorebirds, Systematic management

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Article Contents

Vol.28 No.4

A Research for Shorebirds on the Southernmost of Nakdong Estuary

Abstract

Reference

Journal of Ecology and Environment