Title Page
Contents
Abstract 9
Introduction 11
1.1. Background 11
1.2. Location and description of fisheries of Lake Kivu 14
1.2.1. Study area 14
1.2.2. Production and main Fisheries 15
1.2.3. Gill Monofilament Fishery 16
1.2.4. Hooks fishery 17
1.2.5. Long line fishery 17
1.2.6. Gillnets fishery 17
1.2.7. Small seine fishery 18
1.2.8. Cast net fishery 18
1.2.9. Fishing Permits 18
1.2.10. Stock assessment and management 19
Material and methods 20
2.1. Data Envelopment Analysis (DEA) 20
2.1.1. Input -Oriented DEA Model 20
2.1.2. Productivity change 22
2.1.3. Technical efficiency 22
2.1.4. Constant Returns-to-scale. 23
2.1.5. Variable returns to scale (VRS) 23
2.1.6. Scale efficiency 24
2.2. Data 25
Results and discussion 29
3.1. Efficiency rate 29
3.1.1. Efficiency rate of Gill Monofilament fishing vessels 29
3.1.2. Efficiency rate of Hooks fishing vessels 30
3.1.3. Efficiency rate of Longline fishing vessels 31
3.1.4. Efficiency rate of Gillnets fishing vessels 32
3.1.5. Efficiency rate 33
3.1.6. Scale efficiency series 36
Conclusion and Implications 38
References 42
Appendices 45
Appendix 1. Initial data of fishing vessel Gill Monofilament 45
Appendix 2. Initial data of fishing vessel Hooks 46
Appendix 3. Initial data of fishing vessel Longline 47
Appendix 4. Initial data of fishing vessel Gillnets 48
Appendix 5. Initial data of fishing vessel Small seine 49
Appendix 6. Initial data of fishing vessel cast net 50
Table 1. Mean values of output and inputs variables of fishing vessels (period 2002-2016). 26
Table 2. Mean values of output and inputs variables of Lake Kivu fisheries (2002-2016). 27
Table 3. Comparison between DEA CCR Model and DEA BCC Model 28
Table 4. Efficiency rate of Gill Monofilament vessels (A) 30
Table 5. Efficiency rate of Hooks fishing vessels 31
Table 6. Efficiency rate of Longline fishing vessels 32
Table 7. Efficiency rate of Gillnet fishing vessels 33
Table 8. Productive unit efficiency rate - input-oriented CCR model 34
Table 9. Difference between Constant Return to Scale (CRS) and Variable Return to Scale... 35
Table 10. Descriptive statistics of CRS and VRS for fishery vessels 36
Table 11 .Descriptive statistics of CRS and VRS for fishery vessels 36
Figure 1. Map of Lake Kivu. 15
Figure 2. Total Production capture fisheries in Lake Kivu. 16
Figure 3. Scale Efficiency 37