• 한국어류학회지
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• 제26권3호
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• pp.230-234
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• 2014

2006년 부산시 기장군 일광읍 좌광천 하류역에서 채집된 구굴무치 Eleotris oxycephala 1개체(표준체장 62.1 mm)를 근거로 국내에서 표본에 근거한 구굴무치의 최초 기록으로서 보고한다. 본 종은 새개부 상하 공기열이 새개부 후단에서 서로 만나지 않는 점, 협부 4번째 공기열이 11번째 공기열을 넘지 않는 점 등에서 북부서태평양에 출현하는 3종의 동속 유사종과 쉽게 구별된다.

• 한국물환경학회지
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• 제37권3호
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• pp.190-203
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• 2021

Water quality, benthic macroinvertebrate communities, and other factors were investigated to explore the effects of the effluent discharge from a sewage treatment plant into Jwagwang stream in Busan in 2019. During the study period, the flow rate of this stream was in the range of 10,400 m³/day to 52,200 m³/day except for the discharge of about 24,000 m³/day of the effluent. After discharge, the flow velocity increased by about 65% and the water depth increased by about 40%. At sites downstream of the discharge point, BOD, COD, TOC, T-N, T-P, and other water quality values were worse than those of the upstream sites. The periphytic algal chlorophyll-a concentrations in the natural substrata were higher than those of the upstream sites, especially in May and August. However, at sites downstream of the discharge point, the individual numbers of Annelida were decreased and individual numbers of the insecta of arthropoda were increased. Also, species numbers and the diversity and dominance indexes were improved in the sites downstream of the discharge point. The functional feeding groups (FFGs) of collector-filterers were increased and the habitat orientation groups (HOGs) of sprawlers, burrowers, and clingers were especially increased at the sites with additional reclaimed wastewater effluent flow. Regardless of the effluent discharge, BMI, an indicator of ecological stream health using benthic macroinvertebrate species, did not show large gaps between the study points. Although the water quality of the sites downstream of the discharge point was much worse than those upstream, their ecosystem soundness was better than those of the upstream sites from an ecological perspective.