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Mapping fisheries catches and related indices of West Africa: 1950 to present

Mapping fisheries catches and related indices of West Africa: 1950 to present. R. Watson. ‘Sea Around Us’ Project Fisheries Centre University of British Columbia Vancouver, Canada r.watson@fisheries.ubc.ca. A presentation made at the International Symposium on:

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Mapping fisheries catches and related indices of West Africa: 1950 to present

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  1. Mapping fisheries catches and related indices of West Africa: 1950 to present R. Watson ‘Sea Around Us’ Project Fisheries Centre University of British Columbia Vancouver, Canada r.watson@fisheries.ubc.ca A presentation made at the International Symposium on: Marine fisheries, ecosystems, and societies in West Africa : half a century of change Dakar, Senegal, June 24th to 28th, 2002

  2. FAO FAO FAO Databases Databases Databases

  3. FAO Statistical Areas

  4. FAO FAO FAO A A A Databases Databases Databases ‘Official’ Records ‘Official’ Records ‘Official’ Records

  5. FAO Landings

  6. Exclusive Economic Zones Data from Veridan

  7. FAO FAO FAO A A A Databases Databases Databases ‘Official’ Records ‘Official’ Records ‘Official’ Records Taxonomic Taxonomic Taxonomic B B B Disaggregation Disaggregation Disaggregation

  8. Capelin: Mallotus villosus from Muus and Dahlstrøm, 1974

  9. Depth Data from NGDD

  10. Distribution Ranges N Latitude Range S Minimum Depth Maximum Depth

  11. Primary Productivity Data from EC Marine Environment Unit

  12. Coral Reef Coral data from WCMC

  13. Presence in FAO Area

  14. Species Distributions Cod Gadus morhua

  15. FAO FAO FAO A A A Databases Databases Databases ‘Official’ Records ‘Official’ Records ‘Official’ Records Taxonomic Taxonomic Taxonomic B B B Disaggregation Disaggregation Disaggregation ‘Disaggregated’ ‘Disaggregated’ ‘Disaggregated’ Records Records Records

  16. FAO FAO FAO A A A Databases Databases Databases ‘Official’ Records ‘Official’ Records ‘Official’ Records Taxonomic Taxonomic Taxonomic B B B Disaggregation Disaggregation Disaggregation ‘Disaggregated’ ‘Disaggregated’ ‘Disaggregated’ Records Records Records Spatial Spatial Spatial C C C Disaggregation Disaggregation Disaggregation

  17. FAO FAO FAO A A A Databases Databases Databases ‘Official’ Records ‘Official’ Records ‘Official’ Records Taxonomic Taxonomic Taxonomic B B B Disaggregation Disaggregation Disaggregation ‘Disaggregated’ ‘Disaggregated’ ‘Disaggregated’ Records Records Records Spatial Spatial Spatial C C C Disaggregation Disaggregation Disaggregation D D D Catch rate by spatial cell Catch rate by spatial cell Catch rate by spatial cell

  18. Taxon (what) Country (who) FAO Area (where)

  19. Taxon (what) Country (who) FAO Area (where) Taxon Distribution Database Fishing Access Database Spatial Reference Database

  20. Taxon (what) Country (who) FAO Area (where) Taxon Distribution Database Fishing Access Database Spatial Reference Database

  21. Taxon (what) Country (who) FAO Area (where) Taxon Distribution Database Fishing Access Database Spatial Reference Database Common Spatial Cells?

  22. Taxon (what) Country (who) FAO Area (where) Taxon Distribution Database Fishing Access Database Spatial Reference Database Common Spatial Cells? NO Refine Rules/Databases

  23. Taxon (what) Country (who) FAO Area (where) Taxon Distribution Database Fishing Access Database Spatial Reference Database Common Spatial Cells? YES Assign Catch Rate to Common Cells

  24. El Niño events El Niño event Uncorrected Global Landings 90 85 80 75 70 65 Landings (million tonnes) 60 55 50 45 0 1970 1975 1980 1985 1990 1995 2000

  25. Corrected Global Landings 90 85 80 75 70 65 Landings (million tonnes) Uncorrected 60 55 50 45 0 1970 1975 1980 1985 1990 1995 2000

  26. Corrected, no anchoveta Global Landings 90 85 80 75 70 65 Landings (million tonnes) Uncorrected Corrected 60 55 50 45 0 1970 1975 1980 1985 1990 1995 2000

  27. 90 90 90 Peruvian 80 80 80 Anchovy 70 70 70 Demersal 60 60 60 Landings (million tonnes) 50 50 50 40 40 40 Pelagics 30 30 30 20 20 20 10 10 10 Invertebrates 1950 1950 1950 1955 1955 1955 1960 1960 1960 1965 1965 1965 1970 1970 1970 1975 1975 1975 1980 1980 1980 1985 1985 1985 1990 1990 1990 1995 1995 1995 Global Landings Peruvian Anchovy Demersal Landings (million tonnes) Pelagics

  28. Landings by Exclusive Economic Zone

  29. Landings by Exclusive Economic Zone Morocco 1.51* *Max. Catch Million tonnes

  30. Landings by Exclusive Economic Zone Morocco Mauritania 0.77 *Max. Catch Million tonnes

  31. Landings by Exclusive Economic Zone Morocco Mauritania Senegal 0.37 *Max. Catch Million tonnes

  32. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia 0.03 *Max. Catch Million tonnes

  33. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau 0.20 *Max. Catch Million tonnes

  34. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau Guinea 0.20 *Max. Catch Million tonnes

  35. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone 0.16 *Max. Catch Million tonnes

  36. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone Liberia 0.03 *Max. Catch Million tonnes

  37. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 0.08 *Max. Catch Million tonnes

  38. Landings by Exclusive Economic Zone Morocco Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 1950 1970 1990 Ghana 0.12 *Max. Catch Million tonnes

  39. Landings by Exclusive Economic Zone Benin Morocco Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 1950 1970 1990 Ghana 0.02 *Max. Catch Million tonnes

  40. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Gambia Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 1950 1970 1990 Ghana 0.29 *Max. Catch Million tonnes

  41. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 1950 1970 1990 Ghana 0.05 *Max. Catch Million tonnes

  42. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 1950 1970 1990 Ghana 0.07 *Max. Catch Million tonnes

  43. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Sierra Leone Liberia Cote D’ Ivoire 1950 1970 1990 Ghana 0.05 *Max. Catch Million tonnes

  44. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Liberia Cote D’ Ivoire 1950 1970 1990 Ghana 0.04 *Max. Catch Million tonnes

  45. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Congo Dem Rep Liberia Cote D’ Ivoire 1950 1970 1990 Ghana 0.09 *Max. Catch Million tonnes

  46. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Congo Dem Rep Angola Liberia Cote D’ Ivoire 1950 1970 1990 Ghana 0.58 *Max. Catch Million tonnes

  47. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Congo Dem Rep Angola Liberia Namibia Cote D’ Ivoire 1950 1970 1990 Ghana 1.20 *Max. Catch Million tonnes

  48. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Congo Dem Rep Angola Liberia 1950 1970 1990 Namibia Cote D’ Ivoire 1950 1970 1990 Ghana South Africa 1.53 *Max. Catch Million tonnes

  49. Landings by Exclusive Economic Zone Benin Morocco Nigeria Mauritania Senegal Cameroon Gambia Eq Guinea Guinea Bissau Gabon Guinea Congo Rep Sierra Leone Congo Dem Rep Angola Liberia 1950 1970 1990 Namibia Cote D’ Ivoire 1950 1970 1990 Ghana South Africa 1.51* 0.02 0.29 0.77 0.05 0.37 0.07 0.03 0.05 0.20 0.04 0.20 0.16 0.09 0.58 0.03 1.20 0.08 1.53 0.12 *Max. Catch Million tonnes

  50. Catch

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