표제지
목차
Abstract 15
I. 서론 18
II. 정량적 분석의 위험도 분석방법 개선 22
1. 서론 22
2. 자료 및 방법 24
2.1. 기존 연구에 의한 생태계 기반 위험도 분석법 24
2.2. 방법 30
2.3. 자료 39
3. 결과 42
3.1. 정량적 분석 (tier 1) 결과 42
3.2. 정성적 분석 (tier 1) 결과 56
3.3. 기존 연구에 의한 방법과 개선된 방법에 의한 위험도 구간 비교 67
3.4. 정량적 분석과 정성적 분석의 비교 78
4. 고찰 83
III. 어획강도에 따른 생태계 위험지수 변동 87
1. 서론 87
2. 자료 및 방법 89
2.1. 자료 89
2.2. 정량적 분석 (tier 1)에 의한 시뮬레이션 89
2.2. 정성적 분석 (tier 2)에 의한 시뮬레이션 95
3. 결과 98
3.1. 정량적 분석 (tier 1)에 의한 시뮬레이션 98
3.2. 정성적 분석 (tier 2)에 의한 시뮬레이션 106
3.3. 정량적 분석과 정성적 분석에 의한 시뮬레이션 결과 비교 123
4. 고찰 130
IV. 종합고찰 132
V. 요약 134
VI. 참고문헌 135
Appendix 140
Appendix 1. Reference point of ecosystem-based fisheries risk assessment for tier 1 140
Appendix 2. Reference point and indicator of tier 2 of sustainability in the ecosystem-based fisheries assessment approach 141
Appendix 3. Criteria of risk states for semi-quantitative assessment 148
Appendix 4. Code for variance using bootstrap methods in R program 149
Appendix 5. Biological and ecological data for target species in Jeonnam marine ranching ecosystem 150
Appendix 6. Number of vessel 151
Appendix 7. Catch of tarp fishery in Jeonnam marine ranching ecosystem. 152
Appendix 8. Catch of funnel fishery in Jeonnam marine ranching ecosystem. 154
Table 2.1. Objectives, Attributes and indicators of the ecosystem-based fisheries assessment approach in this study 32
Table 2.2. Objectives, indicators and level of indicators of the ecosystem-based fisheries assessment approach 36
Table 2.3. Target fisheries and target species in this study 41
Table 2.4. Data of funnel net fishery in Jeonnam marine ranching ecosystem 43
Table 2.5. Data of trap fishery in Jeonnam marine ranching ecosystem 44
Table 2.6. Objective risk index (ORI) and species risk index (SRI) of the Jeonnam marine ranching ecosystem by new methods of the ecosystem-based fisheries assessment approach 52
Table 2.7. Fishery risk index (FRI) and ecosystem risk index (ERI) of the Jeonnam marine ranching ecosystem by new methods of the ecosystem-based fisheries assessment approach 54
Table 2.8. Variance of objective risk index (ORI) and species risk index (SRI) of Jeonnam marine ranching ecosystem calculated by the bootstrap method 55
Table 2.9. Risk scores of tier 2 by the ecosystem-based fisheries assessment approach for the funnel net fishery in Jeonnam marine ranching ecosystem 57
Table 2.10. Risk scores of tier 2 estimated from the ecosystem-based fisheries assessment approach for the trap fishery in Jeonnam marine ranching ecosystem 58
Table 2.11. Objective risk index (ORI) estimated from tier 2 of the ecosystem-based fisheries assessment approach in Jeonnam marine ranching ecosystem 63
Table 2.12. Fishery risk index (FRI) and ecosystem risk index (ERI) estimated from tier 2 of the ecosystem-based fisheries assessment approach in Jeonnam marine ranching... 65
Table 2.13. Variance of objective risk index (ORI) and species risk index (SRI) of tier 2 of Jeonnam marine ranching ecosystem calculated by the bootstrap method 66
Table 2.14. Comparison of risk scores of tier 1 and tier 2 in Jeonnam marine ranching ecosystem 79
Table 2.15. Comparison of tier 1 and tier 2 on objectives risk index and species risk index in Jeonnam marine ranching ecosystem 80
Table 2.16. Comparison of tier 1 and tier 2 on fishery risk index and ecosystem risk index in Jeonnam marine ranching ecosystem 82
Table 3.1. Objectives and indicators of tier 1 in the ecosystem-based fisheries assessment approach 91
Table 3.2. Risk scores of black seabream by tier 1 under various fishing intensities 108
Table 3.3. Objective risk index (ORI) and species risk index (SRI) of black seabream by tier 1 under variance fishing intensities 109
Table 3.4. Risk scores of black seabream by tier 2 under various fishing efforts 121
Table 3.5. Objectives risk index (ORI) and species risk index (SRI) of black seabream by tier 2 under various fishing efforts 122
Fig. 2.1. Flowchart showing the ecosystem-based fisheries risk analysis. 25
Fig. 2.2. Reference points and risk scores of ecosystem-based fisheries assessment approach. 26
Fig. 2.3. Nested structure of risk indices used in the ecosystem-based fisheries assessment approach 28
Fig. 2.4. Revised reference points and risk scores of the ecosystem-based fisheries assessment approach. 34
Fig. 2.5. A map showing the Jeonnam marine ranching ecosystem of Korea. 40
Fig. 2.6. Risk plots showing risk scores of the black seabream by the funnel net fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 69
Fig. 2.7. Risk plots showing risk scores of the rock bream by the funnel net fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 70
Fig. 2.8. Risk plots showing risk scores of the gray mullet by the funnel net fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 71
Fig. 2.9. Risk plots showing risk scores of the conger eel by the trap fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 73
Fig. 2.10. Risk diagram showing objective risk indices (ORI) the funnel net fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 75
Fig. 2.11. Risk diagram showing objective risk indices (ORI) of the trap fishery in Jeonnam marine ranching ecosystem using the ecosystem-based fisheries assessment approach... 77
Fig. 3.1. Flowchart showing the Integrated Fisheries Risk Analysis Methods for Ecosystem, IFRAME. 88
Fig. 3.2. Flowchart showing the impacts of fishing intensity by tier 1 in marine ecosystems. 90
Fig. 3.3. Flowchart showing the impacts of fishing intensity by tier 2 in marine ecosystems. 97
Fig. 3.4. Calculated values of the indicators and risk scores of sustainability on black seabream by tier 1 under various fishing intensities 99
Fig. 3.5. Calculated values of the indicators and risk scores of biodiversity on black seabream by tier 1 under various fishing intensities 102
Fig. 3.6. Calculated values of the indicators and scores of habitat on black seabream by tier 1 under various fishing intensities 104
Fig. 3.7. Calculated values of the indicators and risk scores of socio-economic on black seabream by tier 1 under various fishing intensities 107
Fig. 3.8. Calculated values of the risk scores of sustainability on black seabream by tier 2 under various fishing efforts 111
Fig. 3.9. Calculated values of the risk scores of biodiversity on black seabream by tier 2 under various fishing efforts 114
Fig. 3.10. Calculated values of the risk scores of habitat on black seabream by tier 2 under various fishing efforts 117
Fig. 3.11. Calculated values of the risk scores of socio-economic benefit on black seabream by tier 2 net fishery under various fishing efforts 120
Fig. 3.12. Comparison of tier 1 and tier 2 on risk scores of sustainability in Jeonnam marine ranching ecosystem. 124
Fig. 3.13. Comparison of tier 1 and tier 2 on risk scores of biodiversity in Jeonnam marine ranching ecosystem. 126
Fig. 3.14. Comparison of tier 1 and tier 2 on risk scores of habitat in Jeonnam marine ranching ecosystem. 128
Fig. 3.15. Comparison of tier 1 and tier 2 for risk scores of socio-economic benefit in Jeonnam marine ranching ecosystem. 129