횡성댐 건설 후 섬강 어류상 변화에 따른 서식지적합도지수 산정

• Published in: 농업생명환경연구 Vol. 34; no. 3; pp. 388 - 402
• Main Authors: 황상희, Sang-hui Hwang, 김의석, Ui-seok Kim, 변상돈, Sang-don Byeon, 최재석, Jae-seok Choi, 안진혁, Jin-hyuk An, 홍은미, Eun-mi Hong
• Format: Journal Article
• Language: Korean
• Published: 강원대학교 농업생명과학연구원 31.12.2022; 농업생명과학연구원
• Subjects: Aquatic ecosystem; Ecological flow; HSI; IFASG; Seom river; 농학
• ISSN: 2233-8322; 2508-870X
• DOI: 10.22698/jales.20220038

In this study, the habitat suitability index (HSI) was calculated through on-site monitoring twice on July 9－10, 2021 and November 6, 2021. During the site monitoring 1,625 objects comprising 35 species belonging to nine families were collected from six survey stations. In addition, physical data, such as depth and velocity, and biological data, such as fish species and populations, were collected. The dominant and subdominant species were Pungtungia herzi (28.00%) and Zacco koreanus (19.26%), respectively, followed by Zacco platypus (13.72%), Rhodeus pseudosericeus (7.63%), Pseudogobio esocinus (3.75%), Coreoleuciscus splendidus (2.52%), Acheilognathus rhombeus (2.03%), and Acheilognathus lanceolatus (2.03%). To calculate the HSI using the Instream Flow and Aquatic Systems Group method, physical information, such as depth and velocity, were used from three selected fish species. P. herzi was selected as the dominant species, and Z. platypus and Z. koreanus as the subdominant species. For P. herzi, the water depth was 0.5 －0.6 m and the velocity was 0.0-0.1 m/s. For Z. platypus and Z. koreanus, the water depths were 0.3－0.5 m and 0.4-0.5 m, respectively, while the velocity was 0.0-0.1 m/s for both species. These species have an HSI value of 1.0 in this range. The HSI developed in this study may be utilized to calculate environmental ecological flow and improve river health. Additionally, it is judged to be highly useful as basic data for river restoration plans.