Mapping fisheries catches and related indices of West Africa: 1950 to present R. Watson ‘Sea...

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

R. WatsonR. Watson‘Sea Around Us’ ProjectFisheries CentreUniversity of British ColumbiaVancouver, Canadar.watson@fisheries.ubc.ca

A presentation made at the International Symposium on:Marine fisheries, ecosystems, and societies in West Africa : half a century of changeDakar, Senegal, June 24th to 28th, 2002

FAO Databases

FAO Databases

FAO Databases

FAO Statistical AreasFAO Statistical Areas

FAO Databases

‘Official’ Records

A FAO Databases

FAO Databases

‘Official’ Records‘Official’ Records

AA

FAO LandingsFAO Landings

Exclusive Economic ZonesExclusive Economic Zones

Data from Veridan

FAO Databases

TaxonomicDisaggregation

‘Official’ Records

A

B

FAO Databases

FAO Databases

TaxonomicDisaggregation

TaxonomicDisaggregation

‘Official’ Records‘Official’ Records

AA

BB

Capelin: Mallotus villosus from Muus and Dahlstrøm, 1974

Capelin: Mallotus villosus from Muus and Dahlstrøm, 1974

DepthDepth

Data from NGDD

Distribution RangesDistribution Ranges

N

S

LatitudeRange

MinimumDepth

MaximumDepth

Primary ProductivityPrimary Productivity

Data from EC Marine Environment Unit

Coral ReefCoral Reef

Coral data from WCMC

Presence in FAO AreaPresence in FAO Area

Species DistributionsSpecies Distributions

Cod Gadus morhua

FAO Databases

TaxonomicDisaggregation

‘Official’ Records

‘Disaggregated’ Records

A

B

FAO Databases

FAO Databases

TaxonomicDisaggregation

TaxonomicDisaggregation

‘Official’ Records‘Official’ Records

‘Disaggregated’ Records

‘Disaggregated’ Records

AA

BB

FAO Databases

TaxonomicDisaggregation

SpatialDisaggregation

‘Official’ Records

‘Disaggregated’ Records

A

B

C

FAO Databases

FAO Databases

TaxonomicDisaggregation

TaxonomicDisaggregation

SpatialDisaggregation

SpatialDisaggregation

‘Official’ Records‘Official’ Records

‘Disaggregated’ Records

‘Disaggregated’ Records

AA

BB

CC

FAO Databases

TaxonomicDisaggregation

SpatialDisaggregation

‘Official’ Records

‘Disaggregated’ Records

Catch rate by spatial cell

A

B

C

D

FAO Databases

FAO Databases

TaxonomicDisaggregation

TaxonomicDisaggregation

SpatialDisaggregation

SpatialDisaggregation

‘Official’ Records‘Official’ Records

‘Disaggregated’ Records

‘Disaggregated’ Records

Catch rate by spatial cellCatch rate by spatial cell

AA

BB

CC

DD

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

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

Taxon Distribution Database

Spatial ReferenceDatabase

Fishing AccessDatabase

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

Taxon Distribution Database

Spatial ReferenceDatabase

Fishing AccessDatabase

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

Taxon Distribution Database

Spatial ReferenceDatabase

Fishing AccessDatabase

Common Spatial Cells?

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

Taxon Distribution Database

Spatial ReferenceDatabase

Fishing AccessDatabase

Common Spatial Cells? N

ORefine Rules/Databases

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

Taxon Distribution Database

Spatial ReferenceDatabase

Fishing AccessDatabase

Common Spatial Cells?

Assign Catch Rate to Common Cells

YES

Global LandingsGlobal Landings

0

45

50

55

60

65

70

75

80

85

90

1970 1975 1980 1985 1990 1995 2000

UncorrectedEl Niño event

El Niño events

Lan

din

gs

(mil

lio

n t

on

nes

)

Global LandingsGlobal Landings

0

45

50

55

60

65

70

75

80

85

90

1970 1975 1980 1985 1990 1995 2000

Uncorrected

Corrected

Lan

din

gs

(mil

lio

n t

on

nes

)

Global LandingsGlobal Landings

0

45

50

55

60

65

70

75

80

85

90

1970 1975 1980 1985 1990 1995 2000

Uncorrected

Corrected

Corrected, no anchoveta

Lan

din

gs

(mil

lio

n t

on

nes

)

Global LandingsGlobal Landings

10

20

30

40

50

60

70

80

90

1950 1955 1960 1965 1970 1975 1980 1985 1990 1995

Peruvian Anchovy

Demersal

Pelagics

Land

ings

(m

illio

n to

nnes

)

10

20

30

40

50

60

70

80

90

1950 1955 1960 1965 1970 1975 1980 1985 1990 1995

10

20

30

40

50

60

70

80

90

1950 1955 1960 1965 1970 1975 1980 1985 1990 1995

Peruvian Anchovy

Demersal

Pelagics

Invertebrates

Land

ings

(m

illio

n to

nnes

)

Landings by Exclusive Economic Zone

Morocco1.51*

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania0.77

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal0.37

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia0.03

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau0.20

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea0.20

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone0.16

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia0.03

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire0.08

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire

1950 1970 1990

Ghana0.12

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire

1950 1970 1990

Ghana

Benin0.02

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria0.29

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon0.05

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote d’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea0.07

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon0.05

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep0.04

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep

Congo Dem Rep0.09

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep

Congo Dem Rep

Angola0.58

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep

Congo Dem Rep

Angola

Namibia1.20

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep

Congo Dem Rep

Angola

Namibia

1950 1970 1990

South Africa1.53

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

Morocco

Mauritania

Senegal

Gambia

Guinea Bissau

Guinea

Sierra Leone

Liberia

Cote D’ Ivoire

1950 1970 1990

Ghana

Benin

Nigeria

Cameroon

Eq Guinea

Gabon

Congo Rep

Congo Dem Rep

Angola

Namibia

1950 1970 1990

South Africa1.53

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

0.20

0.03

0.37

0.77

1.51*

*Max. Catch Million tonnes

Landings by Exclusive Economic Zone

CatchCatch

ValueValue

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