- 49 -
Chapitre Troisième: Estimation du niveau d’exploitation
dans les tableaux III.2, III.3, III.4, III.5, III.6 et III.7 pour les mâles et pour les femelles. Les figures
III.1, III.2 et III.3 illustrent les différentes simulations effectuées.
Tableau III.2 - Évaluation de l’effet obtenu lorsqu’on fait varier simultanément l’effort de la flottille
chalutière (Xch) et l’effort des petits métiers (Xpm) chez C. granulosus (♂ et ♀).
Tableau III.3 - Évaluation de l’effet obtenu lorsqu’on fait varier l’effort de la flottille chalutière
(Xch), l’effort des petits métiers (Xpm) demeurant constant chez C. granulosus (♂ et ♀)
Mâles
Femelles
Petit métiers
Chalutiers
Petit métiers
Chalutiers
acteur pm (Xpm roductionY(pmValeur V(pm) ProductionY(ch Valeur V(ch) roductionY(pmValeur V(pm) ProductionY(ch Valeur V(ch)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
362.2
145109.6
307.3
123131.9
322.2
129302.9
270.6
108592.9
0.4
599.9
240439.6
524.4
210170.4
562.0
225648.5
482.6
193738.4
0.6
759.3
304439.0
680.1
272617.8
743.4
298626.1
650.6
261273.0
0.8
868.3
348265.2
793.1
318041.8
882.5
354672.3
785.0
315374.5
1.0
944.1
378838.3
876.3
351511.9
990.3
398227.3
893.5
359093.1
1.2
997.8
400543.5
938.2
376477.9
1074.8
432424.6
981.6
394694.2
1.4
1036.3
416213.0
984.9
395320.3
1141.5
459518.6
1053.7
423884.5
1.6
1064.5
427707.1
1020.3
409702.4
1194.6
481158.0
1113.1
447966.8
1.8
1085.3
436266.8
1047.6
420799.9
1237.1
498566.3
1162.2
467946.5
2.0
1100.9
442732.3
1068.7
429452.7
1271.3
512662.4
1203.0
484607.5
2.2
1112.7
447680.3
1085.3
436266.8
1299.0
524144.1
1237.1
498566.3
2.4
1121.7
451511.6
1098.4
441683.8
1321.5
533547.0
1265.6
510311.9
2.6
1128.6
454509.1
1108.7
446028.3
1339.9
541285.2
1289.6
520234.7
2.8
1133.9
456874.6
1117.0
449541.0
1354.9
547681.9
1309.8
528648.5
3.2
1141.2
460254.5
1129.1
454747.8
1377.3
557413.0
1341.4
541917.9
3.4
1143.6
461455.6
1133.5
456681.5
1385.5
561108.0
1353.7
547148.7
3.8
1146.8
463184.7
1139.9
459613.9
1397.8
566803.0
1372.9
555501.9
4.5
1148.8
464789.5
1146.1
462752.3
1410.1
573058.4
1394.7
565321.9
Mâle
Femelle
Flottille de petit métiers
Flottille chalutière
Flottille de petit métiers
Flottille chalutière
F (Xpm)
Y(pm)
V(pm)
F (Xch)
Y(ch)
V(ch)
F (Xpm)
Y(pm)
V(pm)
F (Xch)
Y(ch)
V(ch)
1
944.1
378838.3
0.0
0.0
0.0
1
990.3
398227.3
0.0
0.0
0.0
1
882.7
354080.9
0.2
264
105685
1
902.2
362622.3
0.2
230.5
92477.0
1
826.3
331375.7
0.4
409.8
164197.2
1
827.1
332326.5
0.4
368.0
147691.9
1
775.2
310846.7
0.6
501.1
200826.1
1
762.8
306451.0
0.6
458.8
184159.4
1
729.3
292398.0
0.8
563
225706
1
707.6
284211.2
0.8
522.9
209940.0
1
687.3
275531.9
1.0
608.6
243923.1
1
658.9
264598.6
1.0
571.4
229414.5
1
650.1
260589.1
1.2
642.2
257407.5
1
616.9
247728.5
1.2
608.1
244193.0
1
616.0
246903.1
1.4
668.7
268058.3
1
579.4
232652.6
1.4
637.8
256104.9
1
585.2
234552.4
1.6
689.8
276539.8
1
546.3
219329.8
1.6
661.7
265753.0
1
556.6
223079.3
1.8
707.5
283616.4
1
516.1
207175.6
1.8
682.0
273919.7
1
530.8
212718.1
2.0
722.0
289438.4
1
489.2
196371.2
2.0
698.9
280722.7
1
508.3
203691.2
2.2
734.2
294356.1
1
466.1
187083.8
2.2
713.4
286530.8
1
486.0
194768.8
2.4
744.4
298444.8
1
443.5
178013.0
2.4
725.5
291404.5
1
466.6
186981.8
2.6
753.2
301984.4
1
424.0
170181.4
2.6
736.0
295657.6
1
447.8
179445.6
2.8
761.2
305223.9
1
405.3
162674.3
2.8
745.8
299578.7
1
415.2
166355.3
3.2
774.3
310459.3
1
373.2
149796.0
3.2
761.7
305974.7
1
400.3
160377.2
3.4
779.8
312699.8
1
358.8
143980.1
3.4
768.5
308735.1
1
373.7
149723.5
3.8
789.3
316481.9
1
333.2
133712.3
3.8
780.2
313427.1
1
335.6
134441.0
4.5
801.7
321482.7
1
297.0
119190.3
4.5
795.7
319695.8