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Mapping fisheries catches and related indices of West Africa: 1950 to present R. Watson ‘Sea Around Us’ Project Fisheries Centre University of British.

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Presentation on theme: "Mapping fisheries catches and related indices of West Africa: 1950 to present R. Watson ‘Sea Around Us’ Project Fisheries Centre University of British."— Presentation transcript:

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 24 th to 28 th, 2002

2 FAO Databases FAO Databases FAO Databases

3 FAO Statistical Areas

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

5 FAO Landings

6 Exclusive Economic Zones Data from Veridan

7 FAO Databases Taxonomic Disaggregation ‘Official’ Records A B FAO Databases FAO Databases Taxonomic Disaggregation Taxonomic Disaggregation ‘Official’ Records AA BB

8 Capelin: Mallotus villosus from Muus and Dahlstrøm, 1974

9 Depth Data from NGDD

10 Distribution Ranges N S Latitude Range 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 Databases Taxonomic Disaggregation ‘Official’ Records ‘Disaggregated’ Records A B FAO Databases FAO Databases Taxonomic Disaggregation Taxonomic Disaggregation ‘Official’ Records ‘Disaggregated’ Records ‘Disaggregated’ Records AA BB

16 FAO Databases Taxonomic Disaggregation Spatial Disaggregation ‘Official’ Records ‘Disaggregated’ Records A B C FAO Databases FAO Databases Taxonomic Disaggregation Taxonomic Disaggregation Spatial Disaggregation Spatial Disaggregation ‘Official’ Records ‘Disaggregated’ Records ‘Disaggregated’ Records AA BB CC

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

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

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

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

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

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

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

24 Global Landings 0 45 50 55 60 65 70 75 80 85 90 1970197519801985199019952000 Uncorrected El Niño event El Niño events Landings (million tonnes)

25 Global Landings 0 45 50 55 60 65 70 75 80 85 90 1970197519801985199019952000 Uncorrected Corrected Landings (million tonnes)

26 Global Landings 0 45 50 55 60 65 70 75 80 85 90 1970197519801985199019952000 Uncorrected Corrected Corrected, no anchoveta Landings (million tonnes)

27 Global Landings Peruvian Anchovy Demersal Pelagics Landings (million tonnes)

28 Landings by Exclusive Economic Zone

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

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

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

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

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

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

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

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

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

38 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 195019701990 Ghana 0.12 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

39 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 195019701990 Ghana Benin 0.02 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

40 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 195019701990 Ghana Benin Nigeria 0.29 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

41 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 195019701990 Ghana Benin NigeriaCameroon 0.05 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

42 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote d’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq Guinea 0.07 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

43 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon 0.05 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

44 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo Rep 0.04 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

45 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo RepCongo Dem Rep 0.09 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

46 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo RepCongo Dem Rep Angola 0.58 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

47 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo RepCongo Dem Rep Angola Namibia 1.20 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

48 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo RepCongo Dem Rep Angola Namibia 195019701990 South Africa 1.53 * Max. Catch Million tonnes Landings by Exclusive Economic Zone

49 Morocco Mauritania Senegal GambiaGuinea Bissau Guinea Sierra Leone Liberia Cote D’ Ivoire 195019701990 Ghana Benin NigeriaCameroonEq GuineaGabon Congo RepCongo Dem Rep Angola Namibia 195019701990 South Africa 1.53 1.20 0.58 0.09 0.04 0.05 0.07 0.05 0.29 0.02 0.12 0.08 0.03 0.16 0.20 0.03 0.37 0.77 1.51 * * Max. Catch Million tonnes Landings by Exclusive Economic Zone

50 Catch

51 Value

52 The Sea Around Us project is a UBC Fisheries Centre partnership with the Pew Charitable Trusts of Philadelphia, USA Collaborators: Ahmed Gelchu, Fredelito Valdez, Adrian Kitchingman, and Wilf Swartz Daniel Pauly, Rashid Sumaila, Villy Christensen, Jackie Alder and other Fisheries Centre colleagues Rainer Froese and the FishBase team Richard Grainger, Fabio Carocci, Ben Satia, Tony Jarrett, Jacek Majkowski, Adele Crispoldi, Marc Taconet, Gene Collins and other FAO professionals Nicolas Hoepffner from EC Marine Environment Unit, Italy Lambert Meñez and ReefBase team World Conservation Monitoring Centre U.S. National Snow and Ice Data Center Veridan Information Solutions Inc. US National Geophysics Data Centre Norm Hall, Murdoch University

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