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http://dx.doi.org/10.13047/KJEE.2020.34.5.402

Population Characteristics of Ichthyofauna and Bluegill, Lepomis macrochirus in 4 Water Dams(Daegok Dam, Sayeon Dam, Daeam Dam, Seonam Dam) in Ulsan Area  

Jang, Chang-Ryeol (Division of Life Science, Incheon National Univ.)
Kim, Jin-Hong (Entop engineering Corp.)
Shin, Young-Seob (Entop engineering Corp.)
Lee, Hak-Joon (Entop engineering Corp.)
Kim, Bong-Seok (Entop engineering Corp.)
Kim, Jung-Hwa (Entop engineering Corp.)
Bae, Yang-Seop (Division of Life Science, Incheon National Univ.)
Publication Information
Korean Journal of Environment and Ecology / v.34, no.5, 2020 , pp. 402-412 More about this Journal
Abstract
This study aims to examine the population characteristics of the fish and the bluegill (Lepomis macrochirus), designated as ecologically disturbing fish, living in four water dams in the Ulsan area and to provide basic data. The survey of fish living in 4 water dams and surrounding tributaries in the Ulsan area from 2016 to 2017 found a total of 1,987 individuals of 28 species of 9 families and identified 6 Korea's endemic species is (21.4% indigenous rate), 4 exotic species, and 2 ecosystem disturbing species. Based on the number of fishes identified, the dominant species was Lepomis macrochirus, and the subdominant species was Hemiculter eigenmanni. The investigation of the age structure of the L. macrochirus found in the 4 water dams in the Ulsan area showed a large population of 1 to 2 old, and the population was growing fast. Moreover, the analysis of the total length-weight relationship and obesity of the L. macrochirus population showed that the regression coefficient b of the total length-weight relationship was greater than 3.0, and the habitat of the L. macrochirus population was in good condition. Obesity had a positive slope, and the growth state was relatively good. The result of this study can be used as useful data to predict the trend of the L. macrochirus fauna inhabiting in 4 water dams in the Ulsan area.
Keywords
ECOSYSTEM DISTURBED ORGANISM; AGE STRUCTURE; LENGTH-WEIGHT RELATIONSHIP; GROWTH FACTOR; CONDITION FACTOR(K);
Citations & Related Records
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