초록 ▼

○ IMTA 조피볼락의 사료효율은 133.1 %(1차 사육), 89.5 %(2차 사육)로 남해안 지역의 조피볼락 보다 높은 것으로 나타남. IMTA 모자반의 상대성장율(RGR)은 1.38~1.72% day^-1 으로, 전남 목포지역의 모자반 상대성장율 1.10~1.13 % day^-1와 비교할 때, 성장이 다소 양호한 것으로 나타남.

○ 다시마와 굴, 해삼은 DEB 수식에 따라 수온에 최적 fitting이 되었고, 해삼은 etivation이 정확히 재현됨. 어체의 물질순환은 개체당 하

○ IMTA 조피볼락의 사료효율은 133.1 %(1차 사육), 89.5 %(2차 사육)로 남해안 지역의 조피볼락 보다 높은 것으로 나타남. IMTA 모자반의 상대성장율(RGR)은 1.38~1.72% day^-1 으로, 전남 목포지역의 모자반 상대성장율 1.10~1.13 % day^-1와 비교할 때, 성장이 다소 양호한 것으로 나타남.

○ 다시마와 굴, 해삼은 DEB 수식에 따라 수온에 최적 fitting이 되었고, 해삼은 etivation이 정확히 재현됨. 어체의 물질순환은 개체당 하루에 2.16 g의 사료가 공급되는 것으로 산정하였을 경우, 5개월간 188 g에서 239 g 까지 성장하였으며 체장은 24 cm 였음.
해삼은 하면전까지 활발한 퇴적물 표층유기물 분해활동을 재현하였음.

○ 어촌 관광형 IMTA 시스템을 위한 실시설계 및 지침을 마련하고, 시험용 모델을 설치 제작, 운용하였으며, 풍력 및 태양광에너지 시스템을 적용하여 1일 소비전력은 7,104 Wh이며, 일일평균 발전량으로 보면 태양광이 6,500Wh로 77%, 풍력에서 1,920 Wh 23%로 축전지 용량기준으로 3.4일이지만, 태양광과 풍력이 상호 보완적으로 발전이 되므로 안정적인 운영이 가능하였음.

○ 접적 경제효과 분석 결과 연간 양식이익 5,956만원, 양식이익률 29.3%로 분석되었으며, 향 후 10년간 양식할 경우 NPV는 6억4,831만원, IRR은 62.2%로 분석되었음.

(출처 : 보고서 요약 2p)

Abstract ▼

Total weight of rockfish has increased from 9.3±1.0cm to 24.8±1.6cm for about 600 days and the body weight has reached 271.0±57.3 g from 12.7±5.7 g. Also, health status of the test fish showed a normal level of liver function, protein metabolism, and osmoregulation.

During the raising period,

Total weight of rockfish has increased from 9.3±1.0cm to 24.8±1.6cm for about 600 days and the body weight has reached 271.0±57.3 g from 12.7±5.7 g. Also, health status of the test fish showed a normal level of liver function, protein metabolism, and osmoregulation.

During the raising period, there’s no parasitic, bacterial, and viral disease. In case of feed efficiency of the fish, it was higher than that of in Southern Sea showing 133.1%(1st raising), 89.5%(2nd raising). Liver function, protein metabolism, and osmoregulation were working well and the survival rate of the species was 94.5% and 93.8% respectively, those are higher than in Southern Sea. Shell height of pacific oyster at the start of the test was 18.4±4.1mm but 432days later, it has reached 105.4±13.6mm. And other changes such as total weight and body weight were also shown from 0.8±0.5g to 55.1±11.6g, and 0.1±0.1g to 9.4±2.8g, respectively. The total length and wet weight of kelp at the starting point in Jan. was 1.19±0.2 cm and 0.0028±0.0012g, respectively and in May they showed 126.5±11.6cm and 107.4±22.6g, respectively. Relative growth rate of kelp was 2.74~4.28% on day-1, which was higher than that of Gijang, Busan. This means that nutrients from the IMTA facility favorably functions to the growth of kelp. Sea cucumber has slightly grown to 9.4±2.6cm, 62.0±33.7g by February from 8.9±2.5cm, 55.2±22.9g and reached 15.0±1.8cm of total length and 119.1±87.2g of body weight in May. There has been a gradual growth before estivation but total length has slightly decreased after estivation. Moreover, RGR of sea cucumber in the facility was shown to 0.72~1.72% on day-1.

According to the analysis of environmental characteristics between before and after IMTA activities, organic materials and oxygen consumption rate on sediments have been reduced.
These results confirm that IMTA technology has a positive effects of aquaculture operations on coastal marine ecosystems.

Carbon budget of IMTA farm are like that 3,096 kg C of fish food, 612 kg C of juveniles, 2,459 kg C of harvest, 1,170 kg C of fish loss, 10 kg C of solute release, 70 kg C of sedimentation, 25 kg C of benthic efflux, and 45 kg C of sediment accumuation, respectively. Feeding and harvest effects are higher than the case of non IMTA farm, and also sedimentation and burial flux are 3.6∼5.5 folds lower, that indicate the right functions of IMTA technology.

To identify food web structure and trophic pathways in IMTA system and to examine the potential use of feed from fish farming as a food source for the consumers around IMTA cage, we examined carbon and nitrogen stable isopope ratios. Considering trophic fractionation effect, δ¹³C and δ¹⁵N values of the cultured rockfishes reflect the major contribution of fish feed and sea cucumber suggest the incorporation of feces extracted from the cultured rockfishes. Suspension feeders, especially oyster, are highly dependent on pelagic sources in both IMTA and conrol sites.

The modelling tool named IMTA material circulation model was applied to estimate carrying capacity of IMTA farm, which considering incorporate a detailed description in terms of both organisms and processes. In the present work, ecological model was coupled with aquaculture organisms growth submodel, which was used and effects were evaluated on a time scale taking into account that growth of rockfish and sea cucumber, and their environmental impacts. This approach allowed for focussing at changes in conditions under different scenarios and processes to evaluate their contribution to the IMTA system dynamics.

In this study, the fishing village tourism type IMTA system design, fabrication, installation and testing were operating. IMTA system is a basic form of a circular rim having a diameter 23m, a depth 9m was designed to scale, for the remote monitoring of stability was conducted. IMTA system's power supply, such as wind and solar power has been installed renewable energy generation device.

WEB server-based information management system(Information Mornitoring System, KT) for remote management, monitoring various sensors, field trials is applied to image and measure real-time information accessible to the Internet and smart phones with integrated control system to operate unattended operation was the basis for building.

Hydraulic model experiments and flow visualization experiments were conducted, and the impact of the waves and the flow cages were examined. Circulating Water Channel by experimental method based on the Reynolds number Hydrodynamic coefficients are measured to determine the flow characteristics of the observed area by using PIV velocity distribution in the cross section, such as turbulence intensity was measured wake flow field measurements of flat netting were. These results interpret the netting around the flow characteristics and efficient marine cage was to serve as the basis for the design. Netting the fluid resistance coefficient was 1.35, reducing the flow rate of the wake netting 0.2 m/s and 2.1% were in, 0.4 m/s 6.6 to 6.9% and above, as a constant value regardless of the rate of increase appeared. The turbulence intensity is less than 1% of the initial flow rate was increased to 2.7, 3.01, 3.27, 3.88% respectively. These results are the basis for calculating the mooring force was calculated. Experimental results using a hydrodynamic model IMTA fishing village tourism type IMTA system guidelines for the design and development of the system was more.

Economic Analysis of IMTA(Integrated Multi-trophic Aquaculture Technology) aims to verify validity of technology development through estimating the economic impact according to developing the technology of IMTA, green aquaculture, using food chain system.

First, this study executed analysis on type and actual condition of fishing village sightseeing to select fishing village sightseeing using IMTA, then reviewed IMTA as future industrial business to verify validity of technology development and executed economic analysis according to biological and socioeconomic variable changes.

In addition, this study aims to propose the feasibility of developing the tourism package for activation of fishing village sightseeing by estimating indirect economic effect In the result of direct economic effect analysis, aquaculture profit considering the investing expense of IMTA facility and output during experimental aquaculture was totally 59.56 million won and profit rate was 29.3% during 14 months.

In case of cultivating during 10 years considering durable period of investment facility, research estimated that NPV(net present value) amounted to 648.31 million won and IRR(internal rate of return) was 62.2%.

In addition, this study use count data model, a way of tourism cost method, to estimate indirect economic effect on IMTA technology and Poisson model.

Especially the result were analyzed that cost and period of travel of the factor determining the number of visits was shown significantly, and analyzed that the less travel cost and the shorter period of travel, number of visits increase more.

According to estimating indirect economic effect on IMTA technology development base on the estimated coefficient, economic value amounted to 107,400 won in case that a tourist visit IMTA site once, total annual economic value per a tourist amounted to 294,000 won considering number of visits.

Fishing village sightseeing can take various types such as recreational fishing, fishing village experience, leports-fishing etc. the primary plan that IMTA facility become Tourist facilities is using IMTA facility as the offshore fishing spots, and similar size fishing spot’s annual number of visitors is 5,569 people (in case of Tongyeong offshore fishing spots) Through this result, total annual economic value of IMTA site was estimated about 590 million won.

(출처 : SUMMARY 7p)

목차 Contents

• 표지 ... 1보고서 요약 ... 2요약문 ... 3SUMMARY ... 7목차 ... 10CONTENTS ... 11그림목차 ... 12FIGURE LISTS ... 14표목차 ... 16TABLE LISTS ... 17제 1 장 연구개발과제의 개요 ... 18제 2 장 국내외 기술개발 현황 ... 19제 3 장 연구개발수행 내용 및 결과 ... 20 제 1 절 IMTA 생물생산 능력 평가 ... 20 1. IMTA 기술 개발·적용 ... 20 제 2 절 IMTA를 위한 환경적합성 조사 ... 25 1. 조사항목 ... 25 2. 해양환경 특성 ... 27 3. 물질수지 산정 ... 32 4. 어장생태계 영양연결 경로 ... 36 5. 어장환경수용력 모델 개발 ... 39 6. IMTA 어장환경수용력 산정 ... 40 제 3 절 IMTA시스템 개발 ... 45 1. IMTA 시스템 기본설계 ... 45 2. IMTA 시스템 성능 개량 및 적용 시험 ... 48 3. IMTA 산업화 시설 개발 ... 51 4. LED를 활용한 먹이생물의 조성변화 연구(위탁연구) ... 59 제 4 절 IMTA 기술개발 경제성 분석 ... 60 1. 어촌관광의 종류와 실태 분석 ... 60 2. IMTA 기술개발의 직접적 경제효과 ... 61 3. IMTA 기술개발의 간접적 경제효과 ... 62제 4 장 목표달성도 및 관련분야에의 기여도 ... 64제 5 장 연구개발결과의 활용계획 ... 65제 6 장 참고문헌 ... 66끝페이지 ... 66