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The distribution of fish (Cobitidae and Cyprinidae) and amphibians together with related environmental factors were surveyed at 30 randomly selected rice-fields (15 flooded unmanaged rice fields (FUR) and 15 unflooded managed rice fields (UMR)) near the Yedang reservoir in Korea, eight times from May to August in 2012. The total number of species captured from the entire survey area was 13 species with 8 families of fish and 5 species of amphibians. The number of species of Cyprinidae fish captured in FUR was higher than that in UMR. Upon the comparative analysis on the distribution of fish and amphibians in FUR and UMR, it was found that the number of Cyprinidae fish captured in FUR was significantly higher than that in UMR while the number of Cobitidae fish captured in UMR was higher than that in FUR. According to the analysis on the environmental factors that affect the distribution of fish, Cyprinidae fish tend to appear in rice-fields, that were flooded in winter, near the Yedang reservoir while Cobitidae fish tend to appear in rice fields that draws its water supply from forest reservoir and have a good water drainage system. In case of amphibians, the number of tadpoles captured in UMR was higher than that in FUR. Rana catesbeiana was dominant in FUR and Rana nigromaculata was dominant in UMR. Upon the analysis on the environmental factors that affect the distribution of tadpoles, it was found that Rana catesbeiana tadpoles tend to appear in rice fields, that were flooded in winter, near Yedang reservoir while Rana nigromaculata tadpoles tend to appear near mountains and far from the Yedang reservoir. 전체 연구지역에서 채집된 어류는 총 8과 13종이며, 미꾸 리과 미꾸리(Misgurnus anguillicaudatus), 미꾸라지(M. mizolepis), 잉어과 붕어(Carassius auratus), 떡붕어(C. cuvieri), 잉어(Cyprinus carpio), 참붕어(Pseudorasbora parva), 치리(Hemiculter eigenmanni), 버들붕어과 버들붕 어(Macropodus ocellatus), 메기과 메기(Silurus asotus), 드 렁허리과 드렁허리(Monopterus albus), 송사리과 대륙송사 리(Oryzias sinensis), 망둑어과 밀어(Rhinogobius brunneus), 검정우럭과 배스(Micropterus salmoides)가 관찰되었다. 그 중 붕어, 떡붕어, 잉어, 참붕어, 메기, 밀어, 배스는 치어만 관찰되었다.

Distribution of Fish and Amphibian in Rice Fields Near the Yedang Reservoir in Korea1.