표제지
목차
요약문 5
SUMMARY 6
제1장 연구개발 과제의 개요 9
제1절 연구개발의 배경 9
제2절 연구개발의 목적 10
제2장 국내외 기술개발 동향 11
제1절 국내 기술개발 동향 11
제2절 국외 기술개발 동향 11
제3장 연구개발 수행내용 및 결과 12
제1절 어류가두리 양식장 환경특성 12
1. 어류가두리 양식장 환경조사 12
2. 어류가두리 양식장 물질순환 17
제2절 어류가두리 양식장 오염배출 부하량 21
1. 어류가두리 양식생물의 사료섭취량 및 배설량 특성 21
2. 어류가두리 미섭이 사료량 및 배설물 부하량 26
제3절 어류가두리 영향범위 평가 28
1. 어류가두리 양식장 영향범위 조사 28
2. 어류가두리 양식장 영향범위 모델링 32
제4절 어류가두리 양식장 환경관리 52
1. 어류가두리 양식장 적정시설량 산정 52
2. 어류가두리 양식장 경제성 평가 62
제4장 목표달성도 및 관련분야에의 기여도 65
제1절 목표 달성도 65
제2절 대표성과 및 기여도 65
1. 유기물 확산 범위 예측 시스템 65
2. 가두리양식장의 생태적 수용력 산정 66
제3절 관련분야 정책 자료 제공 66
제5장 연구개발결과의 활용계획 67
제1절 추가연구의 필요성 및 계획 67
제2절 타 연구에의 응용 67
제6장 참고문헌 69
제7장 부록 76
판권기 79
Table 1. Feed intake, growth rate and excretion amount by water temperature and stocking density of aquaculture organisms 22
Table 2. Aquaculutre Standards (MOF notice, 2020. 6. 1.) 26
Table 3. Comparison of annual feed dosage and number of stocked fish in fish cage farms 26
Table 4. Comparison of daily feed consumption and stocking density in fish cage farms 27
Table 5. Comparison of daily feed consumption and stocking density in fish cage farms 28
Table 6. Excretion load per unit volume per day in fish cage farms 28
Table 7. values of parameters in fish-growth model 46
Table 8. Sensitivity analysis results of each key parameter related to fish growth 49
Table 9. Fish cage model particulate matter parameters 49
Table 10. Emission load for each cage (gC/m²/day) according to the current stocking density by the integrated fish cage farm ecosystem model 54
Table 11. Optimal feed input modeling and economic analysis result by integrated fish cage farm (mullet) ecosystem model 63
Fig. 1. Conceptual diagram of environmental characteristics and material cycle survey near fish cage farms 12
Fig. 2. Study area and stations of fishcageaquaculture. (A) Hadong, (B) Tongyeong. Marked stations presents Control site(CON_) and sedimentation survey by direction(A~C) 13
Fig. 3. Current velocity and direction in Hadong farm. (A) inner-surface, (B) inner-bottom, (C) outer- surface, (D) outer-bottom layer of the cage 14
Fig. 4. Current velocity and direction in Tongyeong farm. (A) inner-surface, (B) inner-bottom, (C) outer- surface, (D) outer-bottom layer of the cage 14
Fig. 5. Characteristics of water quality environment in fish cage farm. (A) water temperature, (B) salinity, (C) dissolved oxygen, (D) particulate organic carbon,... 15
Fig. 6. Material circulation in fish cage farms. (A) particulate matter sedimentation, (B) particulate organic carbon sedimentation, (C) particulate organic nitrogen sedimentation,... 16
Fig. 7. Phosphorus concentration by form of existence in the sediments. (A) Control, (B) Hadong cage, (C) Tongyeong cage 18
Fig. 8. Sulphate reduction rates in cage farm sediments (A) is Hadong control, (B) is Hadong cage, (C) is Tongyeong control and (D) is Tongyeong cage 18
Fig. 9. Comparison of total sediment oxygen consumption rate (SOD), anaerobic organic matter decomposition rate (CorgOR), sulfate reduction rate (SRR),... 19
Fig. 10. Mass balance of Fish cage farm (A) is Hadong carbon, (B) is Hadong nitrogen, (C) is Tongyeong carbon and (D) is Tongyeong nitrogen 20
Fig. 11. Water tank device for culturing aquaculture organisms 21
Fig. 12. Carbon and nitrogen content in fish body. (A) carbon content, (B) nitrogen content 24
Fig. 13. Carbon and nitrogen content in fish feed. (A) carbon content, (B) nitrogen content 25
Fig. 14. Changes in fecal composition of mullet and red sea-bream by stocking density and temperature. (A) carbon, (B) nitrogen, L, low density; M, standard density;... 25
Fig. 15. Seasonal variation of fecal composition of mullet and red sea-bream by stocking density. (A) carbon, (B) nitrogen, L, low density; M, standard density; H, high density 25
Fig. 16. Feed input for each fish cage farm. (A) mullet cage, (B) red sea-bream cage 27
Fig. 17. Organic matter content of surface sediments by farm separation distance. (A) Hadong cage, (B) Tongyeong cage 29
Fig. 18. Effects of separation distance in Hadong cage. (A) benthic animal index (BHI), (B) benthic group GI+GII:GIII+GIV, (C) multivariate analysis 29
Fig. 19. Effects of separation distance in Tongyeong cage. (A) benthic animal index (BHI), (B) benthic group GI+GII:GIII+GIV, (C) multivariate analysis 30
Fig. 20. Stable isotopes of sedimented organic particles in fish cage 31
Fig. 21. Elemental composition (A) and Bayesian mixing model results (B) By distance between fish cage 31
Fig. 22. Hydrodynamic model of Hadong cages. (A) grid system, (B) verification 32
Fig. 23. Hydrodynamic model of Tongyeong cages. (A) grid system, (B) verification 33
Fig. 24. Flood and ebb tide distribution by layer in Hadong 34
Fig. 25. Flood and ebb tide distribution by layer in Tongyeong 35
Fig. 26. Fish cage farm model (EM3-fish) model structure 36
Fig. 27. Diagram of the fish growth model included in EM3-fish 36
Fig. 28. Grid configuration of particulate matter diffusion module (A) and particle emission location (B) 48
Fig. 29. Comparison and correlation between observed and calculated values of fish growth model. (A) mullet, (B) red sea bream 50
Fig. 30. Comparison of surface layer TOC observed and calculated value at the center of the cage (above) and by separation distance. (A) Hadong cage, (B) Tongyeong cage 51
Fig. 31. Impact range based on particle tracking model. (A) considering cage facility resistance, (B) considering change in sedimentation velocity 52
Fig. 32. Connection of each model element for ecological carrying capacity estimation 53
Fig. 33. Load reduction plan for estimating ecological carrying capacity 53
Fig. 34. Organic matter impact range model results from fish cage. (A) Hadong, (B) Tongyeong 55
Fig. 35. Comparative modeling of fish cage farm standard breeding. (A) changes in total production and uneaten feed, (B) changes in surface layer TOC of sediments 56
Fig. 36. Fish cage raw feed feeding model. (A) changes in total production and uneaten feed, (B) changes in surface layer TOC of sediments 57
Fig. 37. Model results of fish cage raw feed feeding model influence range 58
Fig. 38. Fish cage stocking control model (A, changes in total production and uneaten feed; B, changes in surface layer TOC of sediments; C, generalized the results) 59
Fig. 39. Optimal feeding control model. (A) changes in total production and uneaten feed, (B) changes in surface layer TOC of sediments 61