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http://dx.doi.org/10.11626/KJEB.2020.38.1.146

Fish distribution and community characteristics of agricultural waterways in the southern region of Korean watersheds  

Ji, Sung-Min (Division of Biotechnology, Korea University)
Sung, Mu-Sung (Department of Biological Sciences, Chungnam National University)
Kim, Jeong-Hun (Department of Life Sciences, Yeungnam University)
Park, Joon-Hwi (Department of Life Science, Hallym University)
Kim, Hyun-Gu (Department of Life Science, Hallym University)
An, Kwang-Guk (Department of Biological Sciences, Chungnam National University)
Publication Information
Korean Journal of Environmental Biology / v.38, no.1, 2020 , pp. 146-159 More about this Journal
Abstract
The objective of our study was to analyze the distribution and composition of fish species and their community characteristics in agricultural waterways in the six water systems-Mankyung River, Seomjin River, Namhae Region, Tamjin River, Yeongsan River, and Dongjin River-during 2017-2018. Little is known about the distributions and community characteristics of the aquatic biota of agricultural waterways in Korea, even if the water bodies have important roles as spawning areas or habitats for fish. In this study, we identified 3,633 fish individuals in the waterways, belonging to 53 species, eleven families, and six orders (dominant species: Tanakia koreensis, T. lanceolate) and 7,108 fish individuals in the main rivers, belonging to 57 species, fifteen families, and nine orders. Moreover, three endangered wildlife (designated by the Ministry of Environment, Korea)-T. somjinensis, Acheilognathus majusculus and Coreoperca kawamebari-were found in the waterways. By fish guild analysis, we found that many waterways had a lower proportion of sensitive species and a higher proportion of omnivore species than those of the main rivers, which indicates a feature of a disturbed environment. In addition, by grouping with environmental variables, we found the group of waterways with high substrate complexity had a higher diversity index (Shannon index) and a lower dominance index (Simpson index) than that of simple substrate complexity. Overall, our study represents the characteristics of fish habitats in agricultural waterways and suggests the need to manage them and study further.
Keywords
agricultural waterway; endangered fish species; fish fauna; community characteristics; fish guilds;
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Times Cited By KSCI : 10  (Citation Analysis)
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