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Theory |
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Practicals |
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Course outline |
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Topic 1 |
1.1.1 Population |
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1.1.2. Dynamics |
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1.1.3. Population dynamics |
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1.1.4. Stock assessment |
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introduction |
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1.2.1. Concept of population |
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1.2.2. Concept of stock |
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Concept of population and unit stock |
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1.3.1. Mixed stock |
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1.3.2. Limitations in the assessment of tropical fish stocks |
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Characteristics of mixed stock |
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1.4.1. Aims of stock assessment |
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1.4.2. Stock assessment |
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1.4.3. Fish abundance |
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1.4.4. Surplus production |
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1.4.5. production rate |
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1.4.6. Production functions |
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1.4.7. Maximum Sustainable Yield (MSY) |
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Principles of stock assessment |
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1.5.1. Fishery-dependent data |
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1.5.2. Fishery-independent data |
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1.5.3. Biological data |
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1.5.4. Fisheries data |
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1.5.5. Basic elements for the description of a fishery |
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1.5.5.1. For Analytical model |
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1.5.5.2. For Surplus production model |
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1.5.5.3. For swept area method |
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Data requirement of stock assessment |
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1.6.1. Spatial and temporal variations |
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1.6.2. Starategies to be followed |
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Biological structure of fisheries resources in space and time |
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1.7.1. Indicators |
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1.7.2. Economic and Social Indicators |
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1.7.3. Uses of indicators |
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1.7.4. Biological indicators |
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1.7.5. Inclusion criteria |
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1.7.6. Fisheries Indicators and data sources |
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1.7.7. Classification of some indicators following the PSR framework |
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Indicators of dynamics in fishery resource |
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1.8.1. Sample |
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1.8.2. Sampling fish |
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1.8.3. Types of sampling |
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Sampling techniques |
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Topic 2 |
2.1.1. Introduction |
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2.1.2. Laws of population structure |
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2.1.3. Laws of growth |
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2.1.4. Fish growth in tropical and temperate waters |
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2.1.5. Biological features of population |
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Population age structure |
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2.2.1. Introduction |
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2.2.2 Life span of a Fish |
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2.2.3 Construction of life table |
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2.2.4 Mathematical models |
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2.2.4.1 Density independent model for organisms with discrete breeding season |
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2.2.4.2 Density dependent model for population with discrete breeding season |
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2.2.4.3 Density independent model for populations which breed continuously |
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2.2.4.4 Density dependent model for populations which breeds continuously |
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2.2.5 Virtual population analysis |
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2.2.6 Cohort Dynamics |
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Theory of life tables |
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2.3.1 Introduction |
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2.3.2. Petersen’s method |
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2.3.3. Modal class progression analysis |
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2.3.4. Integrated method |
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Age determination-integrated method |
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Topic 3 |
3.1.1. Introduction |
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3.1.2. Growth |
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3.1.3. Growth parameters |
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3.1.3.1. Length infinity or Asymptotic length |
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3.1.3.2. Growth coefficient or curvature parameter (K) |
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3.1.3.3. Initial condition parameter / Arbitrary origin of growth (t0) |
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3.1.3.4. L max |
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3.1.3.5. Growth rate |
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3.1.3.6. von Bertalanffy’s growth equation |
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3.2.1. Introduction |
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3.2.2. Growth parameters and its application |
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3.2.3. Data needed to estimate growth parameters |
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3.2.4. Methods / equations used to study growth parameters |
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3.2.4.1. Gulland and Holt Plot |
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3.2.4.2. Ford – Walford plot & Chapman’s method |
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3.2.4.3. Chapman’s method |
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3.2.4.4. Bagenels’ least square method |
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3.2.5. Estimation of growth parameters for Elasmobranches |
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3.2.6. Estimation of growth parameters for crustaceans |
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3.2.7. Growth Co-efficient |
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Determination of growth parameters |
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Topic 4 |
4.1.1. Introduction |
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4.1.2. Types of Mortality |
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4.1.3. Application of mortality parameters |
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4.1.4. Estimation of total instantaneous mortality (Z) |
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4.1.4.1. Estimation of Z by exponential equation |
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4.1.4.2. Estimation of ‘Z’ by age composition data |
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4.1.4.3. Estimation of Z from CPUE |
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4.1.4.4. Estimation of Z using LFD and selection parameters |
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4.1.4.4.1. Estimation of Z by means of a catch curve |
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4.1.4.4.2. Estimation of Z by growth and selection parameters (Beverton and Holt equation) |
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4.1.4.4.3. Powell – Wetherall method |
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4.2.1. Introduction |
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4.2.2. Application |
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4.2.3. Estimation of ‘M’ |
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4.2.3.1. Pauly’s empirical formula |
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4.2.3.2. Correlation of ‘M’ with longevity of fishes (Pauly’s method) |
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4.2.3.3. Rikhter and Efanov’s formula |
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4.3.1. Introduction |
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4.3.2. Estimation of ‘F’ |
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4.4.1. Exploitation ratio |
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4.4.2. Exploitation rate |
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Exploitation rate and exploitation ratio |
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Topic 5 |
5.1.1. Introduction |
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5.1.2. Selection Process and Selectivity |
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5.1.3. Bell shaped selection curve |
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5.1.4. Sigmoid shaped selection curve |
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5.1.5. Gill Net selectivity |
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5.1.6. Factors influencing the selectivity to Gill nets |
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5.1.7. General information needed |
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5.2.1. Introduction |
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5.2.2. Selectivity |
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5.2.3. Factors affecting the selectivity of trawls |
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5.2.4. Methods of measuring the selectivity of trawls |
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Topic 6 |
6.1.1. Introduction |
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6.1.2. Objectives |
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6.1.3. Surplus production model |
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6.1.3.1. Schaefer model |
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6.1.3.2. Fox model |
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6.1.4. Procedure |
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6.1.5. Uses of the surplus production model |
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6.2.1. Introduction |
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6.2.2. Concept of MSY |
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6.2.3. Merits and demerits of MSY |
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6.2.4. FMSY & FMAX |
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6.2.5. Limitations of MSY approach |
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6.2.6. Maximum Economic yield (MEY) |
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Maximum sustainable yield & maximum economic yield |
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6.3.1. Introduction |
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6.3.2. Swept area method |
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6.3.3. Biomass Estimation |
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Swept area method |
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6.4.1. Introduction |
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6.4.2. Methods of estimation of potential yields |
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6.4.2.1. Gulland Equation |
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6.4.2.2. Ricker equation |
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6.4.2.3. Cadima’s formula |
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6.4.2.4. Schaefer and Fox model |
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Estimation of potential yields in (more or less) virgin stocks |
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Topic 7 |
7.1.1. Introduction |
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7.1.2. Yield / recruit model of Beverton and Holt |
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7.1.3. Assumption to be taken for using Analytic model |
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7.1.4. Derivation of the model |
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7.1.5. Input data needed |
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7.1.6. Equation |
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7.1.7. Calculation procedure |
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Beverton and Holt's yield per recruit model |
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7.2.1. Introduction |
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7.2.2. Equation |
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Beverton and Holt's relative yield per recruit model |
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7.3.1. Introduction |
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7.3.2. Mean age and size in the yield |
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Biomass per recruit model |
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7.4.1. Yield curves |
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Yield curves |
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Topic 8 |
8.1.1. Introduction |
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8.1.2. Principles |
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8.1.3. Parameters to be entered for all groups |
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Ecopath |
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8.2.1. Introduction |
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8.2.2. Applications |
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8.2.3. Collection of Data |
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Monte carlo simulation model |
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Topic 9 |
6.5.1 Introduction |
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6.5.2 Recruitment |
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6.5.3 Ricker bell shaped curve |
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6.5.4. Beverton and Holt model |
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6.5.5. Cushing model |
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6.5.6 Relative response model |
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Models used for stock recruits and parent stock |
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Topic 10 |
9. 1.1 Introduction |
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9.1.2 Growth overfishing |
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9.1.3 Recruitment overfishing |
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9.1.4 Ecosystem overfishing |
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10.1.6.Regulary measures |
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10.1.6. Eumetric fishing |
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Overfishing |
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9.2.1 Introduction |
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9.2.2 Fishing effort |
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9.2.3 Catchability coefficient |
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9.2.4 Standardisation of fishing effort |
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CPUE |
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9.3.1 Introduction |
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9.3.2 Open accent catch |
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10.4.1. Introduction |
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10.4.2. Origins of public policy |
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10.4.3. Principles of Public Action |
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10.4.4. Current regulatory objectives |
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10.4.4.1. Conservation |
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10.4.4.2. Allocation of fishing rights |
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10.4.4.3. Orderly fishing |
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10.4.4.4. Prevention of waste |
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10.4.4.5. Protection of public health |
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10.4.5. Regulatory decisions |
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10.4.6. Regulation of a large oceanic fishery |
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10.4.7. Methods of regulation |
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10.4.8. International Plans of Actions (IPOAs) |
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10.4.9. Bycatch reduction technologies |
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10.4.10. Pointers from CCRF and IPOAs for responsible fishing |
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10.5.1. Introduction |
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10.5.2. Excerpts Pertaining to Fisheries from the law of the Sea |
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10.5.3. Conservation of the living resources |
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10.5.4. Utilization of the living resources |
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Implementation of the new law of the sea |
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Topic 11 |
Introduction |
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Objectives |
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Collection and processing of Length Frequency Data |
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Integrated method of Pauly |
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Tenets of the Integrated method of Pauly |
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Points to be noted while drawing curves |
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Topic 12 |
Introduction |
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Objectives |
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Procedure |
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Problem |
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Length and weight converted to VBGF growth curves |
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Calculation |
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Results |
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Topic 13 |
Introduction |
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Objectives |
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Procedure |
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Problem : 1 |
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Solution |
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Problem : 2 |
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Solution |
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Results |
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Topic 14 |
Introduction |
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Objectives |
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Procedure |
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Problem |
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Results |
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Topic 15 |
Introduction |
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Objectives |
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Procedure |
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Problem |
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Topic 16 |
Objectives |
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Problem |
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Solution |
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Topic 17 |
Introduction |
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Problem |
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Solution |
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Result |
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Topic 18 |
Introduction |
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Problem |
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Result |
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Topic 19 |
Objectives |
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Problem |
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Topic 20 |
Introduction |
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Problem 1 |
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Problem 2 |
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Solution for purse seine |
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Solution for both trawl net and purse seine |
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Solution for both trawl net and purse seine |
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Topic 21 |
Introduction |
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Problem |
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Schaefer model |
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Fox model |
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Topic 22 |
Introduction |
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Problem |
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Conclusion |
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Topic 23 |
Introduction |
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Procedure |
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Topic 24 |
Introduction |
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Table 1 |
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Problem |
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Topic 25 |
Swept Area Method |
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Solution |
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Topic 26 |
Computer Packages for Stock Assessment Studies |
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