어류의 물리적 서식적합도지수 산정방안 고찰

Abstract

Development of Physical Fish Habitat Suitability Index For estimation of the river conservation flow discharge, the minimum flow, but also habitat suitability flow should be considered. However, the estimation method for the habitat flow discharge is not yet established in Korea, and thus the conservation flow discharge depends on the minimum flow. The U.S. and Europe nations have used the IFIM (Instream Flow Incremental Methodology) for the habitat flow rate. The development of habitat suitability index is essential in estimating the ecological flow discharge. In the U.S., the habitat suitability indices of about 60 fishes have been established from 1980s. Based the index of fishes, the ecological flow recommendation was proposed through the physical habitat simulation. In Korea, the recommendation of the ecological flow discharge through the physical habitat simulation has been studied from 2000. The most of studies, however, were limited to Zacco platypus. It is mainly because the habitat index for the other fishes besides Zacco platypus and Zacco temminckii is not developed. The habitat suitability indices for various fishes are definitely necessary to estimate the ecological flow rate of a group of fishes. In this study, the habitat suitability indices for 61 fishes are developed in the water systems of Han river and Geum river. The difference of habitat suitability index was also compared in two water systems and three rivers of same water system.