An Efficiency Analysis of a Nature-Like Fishway for Freshwater Fish Ascending a Large Korean River

作者：Kim Jeong Hui; Yoon Ju Duk; Baek Seung Ho; Park Sang Hyeon; Lee Jin Woong; Lee Jae An; Jang Min Ho^*

来源：Water (Switzerland), 2016, 8(1): 3.

DOI：10.3390/w8010003

• nature-like fishway
• trap
• PIT telemetry
• attraction efficiency
• passage efficiency

Using traps and passive integrated transponder (PIT) telemetry, we investigated the effectiveness of the nature-like fishway installed at Sangju Weir on the Nakdong River, Korea. In 11 regular checks over the study period, 1474 individuals classified into 19 species belonging to 5 families were collected by the traps, representing 66% of the species inhabiting the main channel of the Nakdong River. PIT tags were applied to 1615 individuals belonging to 22 species, revealing fishway attraction and passing rates of 20.7% and 14.5%, respectively. Interspecific differences were also shown. For 63.2% of fishes, it took more than a day to pass through the fishway. Some individuals spent a longer time (>28 days) inside the fishway, suggesting the fishway was also being used for purposes other than passage. In this study, we verified species diversity of fish using a nature-like fishway installed in a large river in Korea. The results of this study provide a useful contribution to the development of fishways suitable for fish species endemic to Korea and for non-salmonid fish species worldwide.

• 出版日期2016-1