The Spanish fisheries along the West African coast from the middle to the end of the 20th century - PowerPoint PPT Presentation

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The Spanish fisheries along the West African coast from the middle to the end of the 20th century

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... demonstrate that Iberians fished sardine and hake in the coast of Morocco ... specialization of fishing (small pelagics, hakes, shrimps, cephalopods) ... – PowerPoint PPT presentation

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Title: The Spanish fisheries along the West African coast from the middle to the end of the 20th century


1
Pêcheries maritimes, écosystèmes et sociétés en
Afrique de lOuest un demi-siècle de changement
Dakar, Sénégal, 24 28 juin 2002
  • The Spanish fisheries along the West African
    coast from the middle to the end of the 20th
    century
  • Eduardo Balguerías Guerra
  • María Teresa García Santamaría
  • Ana Ramos Martos
  • Ignacio Sobrino Yraola
  • Lourdes Fernández Peralta
  • Teresa García Jiménez
  • Instituto Español de Oceanografía

2
OUTLINE
  1. Historical antecedents
  2. IEO statistical surveys in Spanish landing ports
    (1932 - 1970)
  3. Establishment of the IEO program on African
    fisheries (1974)
  4. Evolution of the Saharan fishery (1932 1999)
  5. Conclusions

3
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4
SOME PIECES OF HISTORY
  • Available information until the 17th century
  • Phoenician and Roman vestiges show the fishing
    tradition in the south of the Iberian peninsula
  • Information on disperse documents demonstrate
    that Iberians fished sardine and hake in the
    coast of Morocco
  • During the 15th century Portuguese explored the
    African coast down to Guinea and brought news on
    the richness of the Saharan coast
  • Spanish conquered the Canary Islands and started
    exploiting Saharan resources
  • Treaty of Tordesillas recognised the rights of
    Spanish fishermen to fish between Capes Ghir and
    Bojador
  • Pirate attacks isolated the region north to Cape
    Ghir and permitted the extension of Canarian
    fishermen from Cape Juby to Cape Timiris (banco
    canario sahariano)

5
SOME PIECES OF HISTORY
  • Available information until 15th century
  • The Illustration period first descriptions of
    the African fisheries
  • 30 boats
  • use of hooks exclusively
  • tasarte, anjova and estornino as bait
  • cherne, corvina and sama as target species
  • preservation gutted, salted and pressed
  • annual production around 6 900 t (3 million fish)

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9
SOME PIECES OF HISTORY
  • Available information until 15th century
  • The Illustration period first descriptions of
    the African fisheries
  • The colonialism scientific explorations
  • introduction of nets and traps chinchorros,
    artes de tendido and nasas
  • preservation of living fish in tank vessels
  • factories onshore

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12
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15
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16
SOME PIECES OF HISTORY
  • Available information until 17th century
  • The Illustration period first descriptions of
    the African fisheries
  • The colonialism scientific explorations
  • The World War Two expansion of industrial
    fisheries
  • introduction of trawling
  • specialization of fishing (small pelagics, hakes,
    shrimps, cephalopods)
  • new preservation methods (ice and freezing)
  • extension of fishing grounds towards the south

17
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18
SOME PIECES OF HISTORY
  1. Available information until 17th century
  2. The Illustration period first descriptions of
    the African fisheries
  3. The colonialism scientific explorations
  4. The World War Two expansion of industrial
    fisheries
  5. The new jurisdictional order decolonisation,
    EEZs and fishing agreements

19
Catches by fishing area
300000
Guinea
Guinea Bissau
250000
Senegal
Mauritania
200000
Sahara
Morocco
catch (t)
150000
100000
50000
0
33
43
53
63
73
83
93
years
20
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21
Effort by fishing area
120000
Guinea
Guinea Bissau
100000
Senegal
Mauritania
80000
Sahara
Morocco
effort (fishing days)
60000
40000
20000
0
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
00
years
22
Composition of fish catches
120000
100000
80000
catches (t)
60000
40000
20000
0
33
37
41
45
49
53
57
61
65
69
73
77
81
85
89
93
97
years
Haemulidae
Pleuronectiforms
Sciaenidae
Sparidae
Serranidae
Other fishes
Cephalopods
23
Relative abundance in cruises
THALASSA - 1962
CIERZO - 1942
0,08
6,83
2,88
0,42
0,54
16,78
(2175 kg/60)
0,01
(569 kg/60)
80,32
92,12
ATLOR V - 1974
CONGEL - 1990
11,33
9,64
9,61
(211 kg/60)
18,7
0,86
(322 kg/60)
71,66
78,2
Fish
Crustaceans
Cephalopods
Equinoderms
Other invertebrates
24
1972
Invertebrates
Osteichthies
Chondroichthies
Cephalopods
0
10
20
30
40
50
60
70
80
percentage (weight)
1990
biomass
catches
landings
Invertebrates
Osteichthies
Chondroichthies
Cephalopods
0
10
20
30
40
50
60
70
80
percentage (weight)
25
CONCLUSIONS
  1. First historical records indicate that Spanish
    fisheries in NW Africa were already established
    in the early Mean Age
  2. Canarian fishermen exploited resources in the
    Saharan coast almost in exclusivity from the 15th
    to the 20th centuries
  3. World War Two favoured the establishment of
    specialized industrial fisheries in the region
  4. The new jurisdictional order forced to the
    extension of traditional fishing grounds
  5. Spanish catches and effort reached their maximum
    during the 1980s followed by a continuous
    decrease due to restrictions in fishing
    agreements
  6. Available information suggests that temporal
    changes in the Saharan assemblages affected to
    the total biomass more than to the faunistic
    composition
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