Index of tables and figures (Annex V)

Index of tables and figures (Annex V)

INDEX OF TABLES AND FIGURES Aims 1 Figure 1. Surface Current System. Iberian- Moroccan Bay. Figure 2.- Water circulation through the Strait of Gibraltar. Figure 3.- Scheme for current variability and interface depth for tide in the border of the Strait of Gibraltar. Figure 4.- Tidal currents (S.H.O.M in Rhazi, 1987) Figure 5.- Surface currents in the Strait of Gibraltar (speed in knots) (S.H.O.M in Rhazi, 1987) Figure 6.- Strait of Gibraltar bottom topography (Erimeson, 1964) Aims 2 Figure 7.- Traps location. Figure 8.- Trap schematic drawing. Figure 9.- Trap de derecho (spawning grounds) Figure 10.- Fishing area for surface longline. Base port at Algeciras and Motril, respectively. Figure 11.- Surface longline fleet under control. 1998. Algeciras. Figure 12.- Surface longline fleet under control. 1998. Motril. Figure 13.- Surface long line scheme. Figure 14.- Fishing area for the Spanish bait boat fleet. Figure 15.- Bait boat fleet under control. 1998. Algeciras. Figure 16.- Fishing areas for Spanish hand line targetting bluefin tuna. Figure 17.- Bluefin tuna fishing by hand line. Al Brumeo. Figure 18.- Hand line fleet under control. 1998. Roquetas. Figure 19.- Hand line fleet under control. 1998. Tarifa. Figure 20. Longline fleet characteristics using drift gill net. 1998. Tanger. Figure 21. Longline fleet characteristics using drift gill net. 1998. Nador. Figure 22.- Drawing scheme for driftness gill net. Tanger. Figure 23.- shows Moroccan swordfish fishing areas in the Mediterranean Sea Figura 24ª. Moroccan trap location. Figura 25ª. Moroccan hand line fleet. 1998. Strait of Gibraltar Aims 3 Table 1. Bluefin tuna catch in number of fish and weight (kg). Spanish traps at the south Atlantic area. Monthly effort in days of bunt set during 1998 Table 2. Bluefin tuna catch in number of fish and weight (kg). Spanish traps in the Mediterranean area close to the Strait of Gibraltar. Monthly effort in days of bunt set during 1998

Table 3. Swordfish catch in number of fish and weight (kg). Spanish longline in the south Atlantic area close to the Strait of Gibraltar during 1998. Table 4. Swordfish catch in number of fish and weight (kg). Spanish longline in the Table 5. Bluefin tuna and Albacore catch and monthly effort. Spanish bait boat in areas close to the Strait of Gibraltar during 1998. Table 6. Bluefin tuna catch and monthly effort. Spanish hand line in the Alborán Sea (Mediterranean) during 1998. Table 7. Bluefin tuna catch and monthly effort. Spanish hand line in the Strait of Gibraltar during 1998. Figure 25. Spanish Sampling Network landing ports and traps. 1998. Figure 26. Bluefin tuna monthly catch by the Spanish traps located in the atlantic and mediterranean areas close to the Strait of Gibraltar. Figure 27.- Swordfish catch, effort, yield and mean weight. Spanish longline (LLHB) in the atlantic area close to the Strait of Gibraltar during 1998. Figure 28.- Swordfish monthly catch, effort, yield and mean weight. Spanish longline (LLHB) in the Alborán Sea during 1998. Figure 29.- Bluefin tuna catch and effort. Spanish bait boat in the area influenced by the Strait of Gibraltar during 1998. Figure 30.- Bluefin tuna catch. Spanish hand line (HAND) in the Strait of Gibraltar area during 1998. Figure 31.- Bluefin tuna catch. Spanish hand line (HAND) in the Western Mediterranean (Mar de Alborán) during 1998. Table 8.- Bluefin tuna monthly catch and effort. Moroccan atlantic traps during 1998. Table 9.- Bluefin tuna monthly catch and effort. Moroccan mediterranean traps during 1998. Table 10.- Swordfish monthly catch and effort. Moroccan mediterranean drift gill net during 1998. Table 11.- Bluefin tuna catch in number and weight. Moroccan mediterranean hand line during 1998. Figure corresponding to table 8.- Bluefin tuna catch, effort, yield and mean weight. Moroccan traps in the Atlantic during 1998. Figure corresponding to table 10.- Swordfish catch, effort, and yield. Moroccan gill net in the Mediterranean during 1998. Figure corresponding to table 11.- Bluefin tuna catch, and mean weight. Moroccan hand line (HAND) in the Mediterranean during 1998. Aims 4 Table 12. Historical series on bluefin tuna monthly and total catch in number of fish, weight and total effort. Spanish traps in the South Atlantic area. 1982-1998. Table 13. Number of bunt set by month and total for the traps in the South Atlantic area. 1982-1998. Figure 32. Bluefin tuna catch, effort, yield and mean weight. Trap fishery in the Atlantic area under the influence of the Strait of Gibraltar. 1989-1998. Figure 33. Bluefin tuna catch, effort, yield and mean weight. Trap fishery in the Mediterranean Sea. 1998.

Figure 34. Swordfish catch. Surface longline fishery in the Atlantic area under the influence of the Strait of Gibraltar and Western Mediterranean. Landing ports: Algeciras and Motril. 1989-1998. Table 14 shows data on bluefin tuna catch in the Mediterranean Sea and related area for the period 1990-1998. Table 15. Bluefin tuna catch. Moroccan trap fishery in the Atlantic area. April- June. 1998. Table 16. Swordfish catch and effort in the Strait of Gibraltar. Drift gill net fishery. 1990-1998. Table 17. Swordfish monthly catch and effort by fishing trip. Landing port: Tanger. April- June 1998. Drift gill net fishery. Table 18. Monthly data on swordfish catch and effort. Landing port: Nador. Drif gill net fishery. 1990-1998. Aims 5 Table 19. Length distribution. Controlled landinds at Algeciras from the Atlantic area close to the Strait of Gibraltar. Table 20. Length distribution. Controlled landings at Motril from the Alborán Sea (Mediterranean). Figure 35. Swordfish length distribution (LJ-FL cm) by month and total. Suraface longline. Atlantic area close to the Strait of Gibraltar. Figure 36. Swordfish length distribution (LJ-FL cm) by month and total. Suraface longline. Table 21. Bluefin tuna monthly and total length distributions in % (LF cm). Atlantic traps close to the Strait of Gibraltar. 1998. Figure 37. Bluefin tuna monthly and total length distributions in % (LF cm). Atlantic traps close to the Strait of Gibraltar. 1998. Table 22. Bluefin tuna monthly and total length distribution. Bait boat fishery in the area under the influence of the Strait of Gibraltar. 1998. Figure 38. Bluefin tuna monthly and total length distribution. Bait boat fishery in the area under the influence of the Strait of Gibraltar. Table 23. Bluefin tuna monthly and total length distribution. Baitboat fishery in the area under the influence of the Strait of Gibraltar. Figure 39. Bluefin tuna monthly and total length distribution. Hand line fishery in the Strait of Gibraltar during 1998. Table 24 Bluefin tuna monthly and total length distribution. Hand line fishery in the Figure 40. Bluefin tuna monthly and total length distribution. Hand line fishery in the Figure 41. Bluefin tuna total length distribution. Atlantic Trap fishery during 1998 (Morocco) Figure 42. Bluefin tuna total length distribution. Hand line fishery in the Mediterranean during 1998 (Morocco). Figure 43. Swordfish total length distribution. Drift gill net fishery in the Mediterranean during 1998 (Tanger, Morocco).

Figure 44. Swordfish total length distribution. Drift gill net fishery in the Mediterranean during 1998 (Nador, Morocco). Figure 45. Frigate tuna total length distribution. Drift gill net fishery in the Mediterranean during 1998 (Morocco). Figure 46. Female bluefin tuna (%). Spanish trap fishery in the Atlantic area close to the Strait of Gibraltar. Figure 47. Bluefin tuna length distribution by sex. Spanish Atlantic trap fishery. 1998. Figure 48. Female bluefin tuna (%). Hand line fishery in the Strait of Gibraltar. 1998. Figure 49. Bluefin tuna sex- ratio by length- class. Moroccan trap fishery at Larache (27/05/98-03/06/98). Figure 50. Swordfish sex- ratio by length- class. Moroccan drift gill net fishery. 1998. Tanger (01/04/98-29/06/98) Table 26. Swordfish length- weight relationship by sampling port. Table 27. Bluefin tuna length- weight relationship by fishing gear. Table 25. Length- weight relationship. Figure 51 57 Length- weight relationship Figure 58. Swordfish length- weight relationship. Tanger. Figure 59. Swordfish length- weight relationship. Nador. Figure 60. Bluefin tuna length- weight relationship. Strait of Gibraltar. Figure 61. Bluefin tuna length- weight relationship. Trap at Larache. Figure 62. Length distribution for bluefin tuna sampled for growth studies and age- length keys elaboration. Morocco. Aims 6 Figura 63. Wind system in the Strait of Gibraltar Table 28 shows daily wind trend in the area of the Strait of Gibraltar, during bluefin tuna genetic migration, for 1982-1998. Table 29 shows daily sea surface temperature at the trap of Barbate, recorded by means of digital thermometer, for the period April- June 1990/1998. Figures 64 to 66 show sea surface temperature in the Atlantic area close to the traps, during April- June (fishing season), from 1995 to 1998. Figure 67 shows sea surface temperature trend in the trap of Barbate during 1998 (fishing season, genetic migration). Figure 66 bis Average sea surface temperature spatial trend for the period April- June. 1998. Figure 67 Yearly average temperature (April- June). Barbate trap. Aims 7 Table 30. Spanish and Moroccan bluefin tuna catch by gear, area and season. Year 1998. Table 31. Gonadosomatic indices for female bluefin tuna caught by traps at the end of the genetic migration period. Figure 68. Spatial distribution of the Spanish and Moroccan fisheries targetting bluefin tuna in the Alborán Sea and areas close to the Strait of Gibraltar.

Figure 69. Spanish and Moroccan bluefin tuna catches and fishing areas during genetic migration. Figure 70. Spanish and Moroccan bluefin tuna catch and fisheries during feeding migration. Figure 71. Bluefin tuna length distributions for the Spanish and Moroccan fisheries during genetic migration in the studied area. Year 1998. Figure 72. Bluefin tuna length distributions for the Spanish and Moroccan fisheries during feeding migration in the studied area. Year 1998. Figure 73. Monthly length distributions for bluefin tuna caught by the Spanish traps in the Atlantic coast, close to the Strait of Gibraltar. Year 1998. Figure 74. Bluefin tuna monthly catch by unit of effort for the Spanish and Moroccan traps in the Atlantic coast, close to the Strait of Gibraltar. Year 1998. (Genetic migration: April, May and June. Feeding migration: July and August). Figure 75. Spatial distribution of Spanish and Moroccan swordfish fisheries in the studied area. Figure 76. Monthly catch by unit of effort for swordfish caught by Moroccan drift gill net (GN) and Spanish surface longline (LL) during 1990 in the studied area. Standard gear about 2500 m in length. Figure 77. Swordfish length distributions by Moroccan drift gill net during 1998 in the Strait of Gibraltar (Tánger). Figure 78. Swordfish length distributions by Moroccan drift gill net during 1998 in the Alborán Sea (Nador). Figure 79. Swordfish length distributions by Spanidh surface longline during 1998 in the Atlantic area, close to the Strait of Gibraltar. Figure 80. Swordfish length distributions by Spanidh surface longline during 1998 in the Mediterranean Sea. Figure 81. Swordfish length distributions for the Spanish and Moroccan fisheries, respectively, during 1998. Figure 82. Females percentages by length class for bluefin tuna caught by Spanish traps during genetic migration. Year 1998. Figure 83. Females percentages by length class for bluefin tuna caught by Spanish long line in spawning season and areas. Figure 84. Females percentages by length class for swordfish caught by hand line in the Strait of Gibraltar during post-spawning season. Figure 85. Females percentages by length class for swordfish caught by Moroccan drift gill net. Year 1998. Figure 86. Females percentages by length class for swordfish caught by surface longline in the Mediterranean during the period 1991-1994. Figure 87. Females percentages by length class for swordfish caught by drift gill net and surface longline. Year 1998. Figure 88. Gonadosomatic index of swordfishes in the reproductive migrations caiugth by the gillnet in the srtait of Gibraltar area along two consecutive years. Figure 89. Sea surface temperature obtained by satellite image. Immediately preceding bluefin tuna genetic migration from the Atlantic to the Mediterranean. Figure 90. Average sea surface temperature trend for the period April- June. 1998. Figure 91. Bluefin tuna daily catch by Spanish and Moroccan traps. Year 1998. Figure 92. Average daily temperature. April- June. Trap at Barbate. 1998.

Figure 93 Wind direction influence (%) on bluefin tuna catch by traps. Figure 94. Historical series on bluefin tuna catch by Moroccan and Spanish traps at the Atlantic coast, close to the Strait of Gibraltar. Figure 95. Standardized CPUE index, in number of fish and kg round weight. Upper and lower 95% confidence limits. (Bluefin tuna. TRAP- Spain) Figure 96. Trend of Spanish and Moroccan bluefin tuna catch by several fishing gears during feeding migration. Mediterranean side of the Strait of Gibraltar.