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오현택,김영태,탁대호,이대인,김귀영,Oh, Hyun-Taik,Kim, Yeong-Tae,Tac, Dae-Ho,Lee, Dae-In,Kim, Gi-Young 해양환경안전학회 2015 해양환경안전학회지 Vol.21 No.2
To assess the noise stress of shrimp farms reasonably, we need a noise observation data underneath the waters first. But, it did not collect yet and airborne noise transfers to water noise wave using transition calculation. In case of construction of solar energy without noise stress protection wall, the threshold values (140 dB) from circumstance of underwater noise exceed within 17m at $S_2$ (15m away from source) and $S_3$ (15m away from source). Considering additional way to decrease the construction noise, all cases including minimum mode(Case A), general mode(Case B), and maximum mode(Case C) meet the guideline of underwater noise for fish farms. In case of the underwater noise could affect the fish farm, it is necessary to understand about farming species such as shrimp, monitoring of present states, and protection way under the construction. 본 연구에서 순천만 일대 새우 양식장 부근에서 이뤄지는 태양광 발전에 따른 소음영향평가방법을 진단하였다. 순천만 폐양식장에 태양광 발전시설이 설치되는 경우, 임계거리 17미터 이내에 위치한 새우양식장 $S_2$와 $S_3$(15미터 이격)은 소음에 대한 저감대책을 수립하지 않은 상태로 작업할 경우에는 악영향이 나타날 수 있다. 소음 스트레스를 감소시키기 위해 방음 판넬을 설치할 시, 본 연구에서 고려한 공사장비 최저효율(Case A), 일반효율(Case B), 최고효율(Case C)에 대한 수중소음 환경목표기준을 만족하는 것으로 나타났다. 건설 장비에서 발생되는 대기 소음이 수중으로 전파될 경우, 보다 합리적인 계산을 통해 수중 소음도 예측과 함께 주변 양식장에 미치는 누적 영향에 대한 심도 있는 평가 및 대책 수립이 필요하다.
오현택(Hyun-Taik OH),김성은(SeongEun KIM) 한국수산해양교육학회 2018 水産海洋敎育硏究 Vol.30 No.4
Developmental projects in coastal area have been increasing since 1990s. The reclamation projects close to the habitat of protected species make it imperative that various groups of marine species were victimized very deadly. In case of marine environmental impact assessment before developmental project, it is necessary to assess the impact based on the law of marine pollution protection. In this process, it needs to assess to find the mitigation way and alternative habitat to avoid the worst case for endangered species. In this study, we studied and analyzed the case of developmental projects which plan to near the habitat of marine endangered species. Especially, in case of reclamation near the habitat of endangered species, we studied the status of assessment because of estimation of inevitable damage such as Clithon retropictus and Ellobium chinense. To assess the status of marine environmental impact assessment, we analyzed the several projects including massive reclamation project, dredging project, walking deck project over the ocean and coastal road developmental project. Most of the projects in this case study are insufficient for assessing the impact of loss and destroy of habitat. And the preparations of alternative habitat for endangered species were not prepared well. For the harmonization of developmental projects and preservation of endangered species such as less movable species, such as Clithon retropictus and Ellobium chinense. we should consider higher standard of assessment method and prepare several ways of monitoring technique, prediction modify method, and selection of alternative habitats.
해상풍력 발전단지 주변 해역 해양보호생물 영향평가 현황 및 개선방안 - 해양포유류 및 바닷새 사례 중심 -
오현택(Hyun-Taik OH),여민유(Min-Yu YEO),정화은(Hwa-Eun JUNG),심정민(Jeong-Min SHIM) 한국수산해양교육학회 2020 水産海洋敎育硏究 Vol.32 No.6
In this study, we assessed the environmental impact on marine endangered species, especially marine mammals and seabirds around offshore wind energy plant in Jeju Island and West-south coastal area during 2014-2020. To reduce fatalities of marine endangered species from noise, vibration and collision around offshore wind energy, we suggest below. First, we have to add the variable of assessment such as monitoring of marine mammals and seabirds. Second, we have to prepare the scientific monitoring platform such as high-tech vessel and flight control system. Third, we have to adopt the simulation model for seabird collision to wind energy blade.
Status of Marine Environment of Olive Flounder, Paralichythys olivaceus, Culture Ground in Jeju-do
Hyun-Taik OH(오현택),Yong-Min YI(이용민),Yun-Sik CHO(조윤식),Jin-Ho KIM(김진호),Kyu-Hyun LEE(이규현) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.3
In this study, we monitored the status of marine environment of olive flounder, Paralichythys olivaceus, culture ground in Jeju-do, Republic of Korea. It reported the consumption of raw olive flounder meat containing of Kudoa, Kudoa septempunctata, could induce vomitting and diarrhea in Japan. The Kudoa is a new mycosporean species, researchers found Kudoa from the muscles of olive flounder cultured at western Japan and imported from Jeju-do. We choose two Kudoa positive farms and two negative farms in the mid of concern about the relation between Kudoa and habitat. We found two marine invasive species at the water-pumping seabed at one of the Kudoa positive farm. The concentration of pH and DO at on-growing flounder farms showed the decreasing pattern along side the raceway (influent sea waters > on growing sea waters > outfluent sea waters). The TN and TP values increased gradually following to the raceway (influent sea waters < on growing sea waters < outfluent sea waters). The concentration of COD and SS were in the range of 0.100 – 2.581 ㎎·L-1, 1.00 – 12.70 ㎎·L-1, respectively. The calculated residence time was 4hr 32minutes at F1, 11hr 21minutes at F2, and 9hr 50minutes at F3, respectively. It was calculated same distance of 4 km away from effluent pipes. Although direct relation between Kudoa and marine environment could not define well based on this study result, the more studies on marine environmental stressors for olive flounder are required to conduct as a reliable method including socio-economic group and environmental group.
보호대상해양생물종인 잘피의 보전을 위한 해역이용협의의 사례연구
오현택(Hyun-Taik OH),이용민(Yong-Min YI),김혜진(Hye-Jin KIM) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.4
This study diagnosed the status of marine environmental impact assessment(MEIA) for project near the habitat of marine protected seagrass species such as Zostera caespitosa, Zostera asiatica, Phyllospadix iwatensis. For the preparation of a marine environmental impact statement, different monitoring parameters are used without any specific guideline for the assessment of current status. And also, both tools and techniques for MEIA are needed to improve for implementing. The monitoring plans and parameters are not considered well with the accuracy of the environmental predictions and effectiveness of any applicable mitigation measures. This study suggested the reasonable standard of the MEIA for the conservation of the marine protected seagrass species which have the habitat located near affected area. The inshore seagrasses need to be monitored including shoot count based on the “No Net Loss of Seagrass” as part of the monitoring parameters to assess the status of marine environment of environmental impact statement. In a process of effect prediction, we suggested a concentration of 10 mg/L suspended solids which added by the new developmental project near seagrasses habitat, referring to study of overseas case. But a further study for an appropriate standard is necessary effectively. In a mitigating process, priority needs to be considered in order of avoidance, minimization, reduction, compensation. In a post-monitoring process, it is necessary to monitor the seagrass species abundance to identify the variation of b/a (before and after) project. And in a case of implementing transplantation, survival rate need to be included to determine a success of project.