Title Page
Contents
List of Acronyms 7
Abstract 10
Chapter 1. Introduction 12
1.1. Purpose of the Study 15
Chapter 2. Materials and Methods 17
2.1. Associated attributes 18
2.2. Indicators for Tier 2 Approach 18
a) Sustainability 19
b) Biodiversity 19
c) Habitat quality 20
d) Socio-economic benefit 20
2.3. Questionnaires and estimation of risk scores 23
2.4. Target and limit reference points 25
2.5. Sample standard deviation 27
2.6. Coefficient of variation 28
2.7. Confidence interval 28
2.8. Nested risk indices 29
2.9. Objectives risk index (ORI) 32
2.10. Species risk index (SRI) 32
Chapter 3. Results 34
3.1. Evaluating risk scores and confidence interval 34
3.1.1. Indicators for sustainability 34
3.1.2. Indicators for biodiversity 34
3.1.3. Indicators for habitat quality 35
3.1.4. Indicators for socio-economic benefit 36
3.2. Number of indicators in each risk zone 38
3.3. Evaluation of objectives risk index (ORI) 40
3.4. Evaluation of species risk index (SRI) 42
Chapter 4. Discussion 43
Chapter 5. Conclusion 45
References 47
Appendices 5
Appendix 1. Target and limit reference points for indicators of sustainability in the Tier 2 EBFA 51
Appendix 2. Target and limit reference points for indicators of biodiversity in the Tier 2 EBFA 55
Appendix 3. Target and limit reference points for indicators of habitat quality in the Tier 2 EBFA 56
Appendix 4. Target and limit reference points for indicators of socio-economic benefit in the Tier 2 EBFA 58
Appendix 5. Estimation of risk scores from each questionnaire 60
Appendix 6. Questionnaire survey form 61
Table 1. Relevant indicators to assess risk for bigeye tuna. 22
Table 2. Mean risk scores for each indicator. 24
Table 3. Estimated risk scores, sample standard deviation, coefficient of variation and... 37
Table 4. Number of indicators in each risk zone. 39
Fig. 1. The Fiji Islands showing Fiji's exclusive economic zone. 16
Fig. 2. Reference point (RP) and risk score for the ecosystem-based fisheries assessment... 26
Fig. 3. Nested structure of risk indices used in the EBFA approach 31
Fig. 4. Objectives risk indices for bigeye tuna 41
Fig. 5. Calculated species risk index for bigeye tuna 42