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1. Autres atolls des Tuamotu : oro-hydrographie : planche 14. / Dupon, J.F.; Bonvallot, J.; Vigneron, Emmanuel; Scale of 1:150 000. Date of publication: 1993. (files: 15308RC_IRD_PYF_TOOH_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15308RC_IRD_PYF_TOOH_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15308RC_IRD_PYF_TOOH_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15308RC_IRD_PYF_TOOH_1993_150000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 15308RC_IRD_PYF_TOOH_1993_150000-05_IRD_PYF_AAAA_1993_143000000-2600.tif, 15308RC_IRD_PYF_TOOH_1993_150000-06_IRD_PYF_AAAA_1993_143000000-2600.tif) 2. L'agriculture et l'utilisation du sol - I : planche 84. / Dupon, J.F.; Scale of 1:100 000. Date of publication: 1993. (files: 01997RC_IRD_PYF_AGRO_1993_100000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01997RC_IRD_PYF_AGRO_1993_100000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01997RC_IRD_PYF_AGRO_1993_100000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 3. L'agriculture et l'utilisation du sol - II : planche 85. / Yon Cassat, F.; Dupon, J.F.; Scale of 1:15 000 000 to 1:62 000. Date of publication: 1993. (files: 15329RC_IRD_PYF_ILSI_1993_----_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_ILSI_1993_15000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_USOL_1993_----_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_USOL_1993_62000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_USOL_1993_75000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_USOL_1993_75000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15329RC_IRD_PYF_USOL_1993_75000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 4. L'aménagement et la gestion des milieux : planche 110. / Bonvallot, J.; Morhange, C.; Scale of 1:50 000. Date of publication: 1993. (file: 02016RC_IRD_PYF_UROR_1993_50000_IRD_PYF_AAAA_1993_143000000-2600.tif) 5. L'aquaculture nacrière et perlière - I : planche 89. / Peugniez, G.; Scale of 1:8 000 000 to 1:15 500. Date of publication: 1993. (files: 02001RC_IRD_PYF_AGFN_1993_8000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02001RC_IRD_PYF_AGPE_1993_15500-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02001RC_IRD_PYF_AGPE_1993_15500-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02001RC_IRD_PYF_AGPE_1993_15500-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 02001RC_IRD_PYF_AGPE_1993_8000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02001RC_IRD_PYF_COME_1993_8000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 6. L'aquaculture nacrière et perlière - II : planche 90. / Peugniez, G.; Scale of 1:8 000 000 to 1:40 000. Date of publication: 1993. (files: 02002RC_IRD_PYF_AGEL_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02002RC_IRD_PYF_AGEL_1993_40000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02002RC_IRD_PYF_AGPE_1993_75000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02002RC_IRD_PYF_AGPE_1993_8000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 7. L'archipel de la société : planche 5. / Dupon, J.F.; Scale of 1:2 000 000. Date of publication: 1993. (file: 01948RC_IRD_PYF_EVPH_1993_2000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 8. L'archipel des Australes : planche 15. / Dupon, J.F.; Scale of 1:3 000 000. Date of publication: 1993. (file: 01951RC_IRD_PYF_EVPH_1993_3000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 9. L'archipel des Gambier : planche 16. / Dupon, J.F.; Scale of 1:2 000 000. Date of publication: 1993. (file: 15309RC_IRD_PYF_EVPH_1993_2000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 10. L'archipel des Marquises : oro-hydrographie : planche 10. / Dupon, J.F.; Scale of 1:150 000. Date of publication: 1993. (files: 15305RC_IRD_PYF_TOOH_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15305RC_IRD_PYF_TOOH_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15305RC_IRD_PYF_TOOH_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15305RC_IRD_PYF_TOOH_1993_150000-04_IRD_PYF_AAAA_1993_143000000-2600.tif) 11. L'archipel des Marquises : planche 9. / Dupon, J.F.; Scale of 1:1 000 000. Date of publication: 1993. (file: 01949RC_IRD_PYF_EVPH_1993_1000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 12. L'archipel des Tuamotu : planche 11. / Dupon, J.F.; Scale of 1:3 500 000. Date of publication: 1993. (file: 01950RC_IRD_PYF_EVPH_1993_3500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 13. L'énergie : planche 91. / Yon Cassat, F.; Gay, J. C.; Scale of 1:12 000 000 to 1:250 000. Date of publication: 1993. (files: 02003RC_IRD_PYF_REEN_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02003RC_IRD_PYF_REEN_1993_250000_IRD_PYF_AAAA_1993_143000000-2600.tif) 14. L'évolution de la population 1897-1926 : planche 74. / Vigneron, Emmanuel; Scale of 1:10 000 000. Date of publication: 1993. (file: 15325RC_IRD_PYF_POPU_1993_10000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 15. L'évolution récente de la population 1962-1983 : planche 78. / Vigneron, Emmanuel; Scale of 1:12 000 000. Date of publication: 1993. (files: 01992RC_IRD_PYF_POPU_1993_12000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01992RC_IRD_PYF_POPU_1993_12000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 16. L'hydrologie : planche 41. / Lafforgue, Alain; Scale of 1:150 000. Date of publication: 1993. (file: 01966RC_IRD_PYF_HLOG_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif) 17. L'industrie : planche 92. / Morhange, C.; Yon Cassat, F.; Scale of 1:50 000 to 1:12 000. Date of publication: 1993. (files: 02004RC_IRD_PYF_ECON_1993_12000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02004RC_IRD_PYF_ECON_1993_12000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02004RC_IRD_PYF_ECON_1993_50000_IRD_PYF_AAAA_1993_143000000-2600.tif) 18. L'occupation de l'espace - I : planche 60. / Ollier, C.; Scale of 1:150 000. Date of publication: 1993. (files: 01981RC_IRD_PYF_USOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01981RC_IRD_PYF_USOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 19. L'occupation de l'espace - II : planche 61. / Ollier, C.; Scale of 1:150 000. Date of publication: 1993. (files: 15322RC_IRD_PYF_USOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15322RC_IRD_PYF_USOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15322RC_IRD_PYF_USOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15322RC_IRD_PYF_USOL_1993_150000-04_IRD_PYF_AAAA_1993_143000000-2600.tif) 20. L'utilisation du milieu marin et récifal : planche 64. / Conte, E.; Scale of 1:150 000 to 1:2 600. Date of publication: 1993. (files: 01984RC_IRD_PYF_USOL_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01984RC_IRD_PYF_USOL_1993_2600_IRD_PYF_AAAA_1993_143000000-2600.tif) 21. La biogéographie récifale et lagonaire : planche 53. / Salvat, B.; Faure, G.; Galzin, R.; Payri, C.; Scale of 1:61 000 000 to 1:20 000 000. Date of publication: 1993. (files: 01975RC_IRD_PYF_BGEO_1993_20000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01975RC_IRD_PYF_BGEO_1993_20000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01975RC_IRD_PYF_BGEO_1993_61000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 22. La christianisation : planche 69. / Sodter, François; Scale of 1:60 000 000 to 1:23 000 000. Date of publication: 1993. (files: 01987RC_IRD_PYF_HIST_1993_23000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01987RC_IRD_PYF_HIST_1993_23000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01987RC_IRD_PYF_HIST_1993_23000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01987RC_IRD_PYF_HIST_1993_23000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 01987RC_IRD_PYF_HIST_1993_60000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 23. La climatologie - I : planche 42. / Pasturel, J.; Scale of 1:17 000 000. Date of publication: 1993. (files: 01967RC_IRD_PYF_CLIM_1993_17000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01967RC_IRD_PYF_CLIM_1993_17000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01967RC_IRD_PYF_CLIM_1993_17000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01967RC_IRD_PYF_CLPR_1993_17000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01967RC_IRD_PYF_CLTE_1993_17000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 24. La climatologie - II : planche 43. / Pasturel, J.; Scale of 1:400 000 to 1:300 000. Date of publication: 1993. (files: 15319RC_IRD_PYF_CLIM_1993_400000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15319RC_IRD_PYF_CLPR_1993_300000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15319RC_IRD_PYF_CLTE_1993_300000_IRD_PYF_AAAA_1993_143000000-2600.tif) 25. La climatologie dynamique : planche 22. / Gauchard, G.; Pascal, R.; Scale unknown. Date of publication: 1993. (file: 01955RC_IRD_PYF_CLIM_1993_----_IRD_PYF_AAAA_1993_143000000-2600.tif) 26. La découverte européenne 1521-1841 : planche 68. / Vigneron, Emmanuel; Scale of 1:17 000 000. Date of publication: 1993. (files: 01986RC_IRD_PYF_HIST_1993_17000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01986RC_IRD_PYF_HIST_1993_17000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01986RC_IRD_PYF_HIST_1993_17000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01986RC_IRD_PYF_HIST_1993_17000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 01986RC_IRD_PYF_HIST_1993_17000000-05_IRD_PYF_AAAA_1993_143000000-2600.tif, 01986RC_IRD_PYF_HIST_1993_17000000-06_IRD_PYF_AAAA_1993_143000000-2600.tif) 27. La densité de la population - I : planche 75. / Vigneron, Emmanuel; Scale of 1:150 000. Date of publication: 1993. (files: 01991RC_IRD_PYF_PODE_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01991RC_IRD_PYF_PODE_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 28. La densité de la population - II : planche 76. / Peugniez, G.; Scale of 1:8 000 000 to 1:150 000. Date of publication: 1993. (files: 15326RC_IRD_PYF_PODE_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15326RC_IRD_PYF_PODE_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15326RC_IRD_PYF_PODE_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15326RC_IRD_PYF_PODE_1993_150000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 15326RC_IRD_PYF_PODE_1993_8000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 29. La distribution de l'eau : planche 99. / Gay, J. C.; Scale of 1:150 000 to 1:30 000. Date of publication: 1993. (files: 02009RC_IRD_PYF_INWA_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02009RC_IRD_PYF_INWA_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02009RC_IRD_PYF_INWA_1993_30000_IRD_PYF_AAAA_1993_143000000-2600.tif) 30. La géologie - I : îles du Vent : planche 28. / Brousse, R.; Scale of 1:150 000. Date of publication: 1993. (files: 01960RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01960RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 31. La géologie - II : îles Sous-le-Vent : planche 29. / Brousse, R.; Scale of 1:150 000. Date of publication: 1993. (files: 15313RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15313RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15313RC_IRD_PYF_GEOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 32. La géologie - III : archipel des Marquises, archipel des Australes : planche 30. / Brousse, R.; Lavest, P.; Scale of 1:150 000. Date of publication: 1993. (files: 15314RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15314RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15314RC_IRD_PYF_GEOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 33. La géologie structurale : planche 25. / Bonvallot, J.; Scale of 1:10 000 000. Date of publication: 1993. (file: 01958RC_IRD_PYF_GEOL_1993_10000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 34. La géomorphologie - I : îles du Vent : planche 35. / Bonvallot, J.; Scale of 1:150 000. Date of publication: 1993. (files: 01893RC_IRD_PYF_GMOR_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01893RC_IRD_PYF_GMOR_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 35. La géomorphologie - II : îles Sous-le-Vent : planche 36. / Bonvallot, J.; Scale of 1:150 000. Date of publication: 1993. (files: 15315RC_IRD_PYF_GMOR_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15315RC_IRD_PYF_GMOR_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15315RC_IRD_PYF_GMOR_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 36. La géomorphologie - III : planche 37. / Bonvallot, J.; Scale of 1:150 000. Date of publication: 1993. (files: 15316RC_IRD_PYF_GMOR_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15316RC_IRD_PYF_GMOR_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15316RC_IRD_PYF_GMOR_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 37. La maîtrise des milieux terrestres - I : planche 62. / Sinoto, Y. H.; Scale of 1:150 000 to 1:3 500. Date of publication: 1993. (files: 01982RC_IRD_PYF_ARCH_1993_3500_IRD_PYF_AAAA_1993_143000000-2600.tif, 01982RC_IRD_PYF_USOL_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif) 38. La maîtrise des milieux terrestres - II : planche 63. / Chazine, Jean Michel; Scale of 1:150 000. Date of publication: 1993. (files: 01983RC_IRD_PYF_USOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01983RC_IRD_PYF_USOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 39. La nouvelle organisation de l'espace : planche 71. / Sodter, François; Scale of 1:16 500 000. Date of publication: 1993. (files: 01989RC_IRD_PYF_ADMI_1993_16500000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_ADMI_1993_16500000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_ADMI_1993_16500000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_HIST_1993_-----01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_HIST_1993_-----02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_HIST_1993_-----03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_HIST_1993_-----04_IRD_PYF_AAAA_1993_143000000-2600.tif, 01989RC_IRD_PYF_HIST_1993_-----05_IRD_PYF_AAAA_1993_143000000-2600.tif) 40. La pathologie infectieuse et parasitaire : planche 101. / Vigneron, Emmanuel; Scale of 1:40 000 000 to 1:450 000. Date of publication: 1993. (files: 02011RC_IRD_PYF_SANT_1993_15000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_15000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-05_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_40000000-06_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_450000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02011RC_IRD_PYF_SANT_1993_450000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 41. La pathologiechronique et dégénérative : planche 102. / Vigneron, Emmanuel; Scale of 1:25 000 000 to 1:330 000. Date of publication: 1993. (files: 15332RC_IRD_PYF_SANT_1993_25000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_25000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_25000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_25000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_330000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_330000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_330000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_330000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_750000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_750000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_750000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 15332RC_IRD_PYF_SANT_1993_750000-04_IRD_PYF_AAAA_1993_143000000-2600.tif) 42. La pêche lagonaire et l'aquaculture : planche 86. / Borel, G.; Scale of 1:4 100 000 to 1:150 000. Date of publication: 1993. (files: 01998RC_IRD_PYF_AGPE_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01998RC_IRD_PYF_AGPE_1993_4100000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01998RC_IRD_PYF_AGPE_1993_600000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01998RC_IRD_PYF_AGPE_1993_600000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 43. La pêche pélagique : planche 87. / Borel, G.; Scale of 1:23 500 000 to 1:3 000 000. Date of publication: 1993. (files: 01999RC_IRD_PYF_AGPE_1993_23500000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01999RC_IRD_PYF_AGPE_1993_23500000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01999RC_IRD_PYF_AGPE_1993_23500000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01999RC_IRD_PYF_AGPE_1993_23500000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 01999RC_IRD_PYF_AGPE_1993_3000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 44. La physico-chimie de l'océan : planche 21. / Rougerie, Francis; Wauthy, Bruno; Scale of 1:35 000 000. Date of publication: 1993. (files: 15311RC_IRD_PYF_CLTE_1993_35000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15311RC_IRD_PYF_CLTE_1993_35000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15311RC_IRD_PYF_MARI_1993_35000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15311RC_IRD_PYF_MARI_1993_35000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 45. La Polynésie Française dans le Pacifique : planche 1. / Dupon, J.F.; Scale of 1:60 000 000. Date of publication: 1993. (file: 01168RC_IRD_PYF_ILSI_1993_60000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 46. La Polynésie Française dans le Pacifique Sud : planche 2. / Dupon, J.F.; Scale of 1:35 000 000. Date of publication: 1993. (file: 01945RC_IRD_PYF_ILSI_1993_35000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 47. La répartition de la population : planche 77. / Vigneron, Emmanuel; Scale of 1:150 000 to 1:98 500. Date of publication: 1993. (files: 15327RC_IRD_PYF_PODI_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15327RC_IRD_PYF_PODI_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15327RC_IRD_PYF_PODI_1993_98500_IRD_PYF_AAAA_1993_143000000-2600.tif) 48. La répartition des espèces océaniques, les ressources : planche 44. / Chabanne, J.; Scale of 1:143 000 000 to 1:23 500 000. Date of publication: 1993. (files: 01968RC_IRD_PYF_AGPE_1993_143000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01968RC_IRD_PYF_AGPE_1993_23500000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01968RC_IRD_PYF_AGPE_1993_23500000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01968RC_IRD_PYF_BGFA_1993_111000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01968RC_IRD_PYF_BGFA_1993_143000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 49. La scolarisation et la formation - I : planche 103. / Gay, J. C.; Ollier, C.; Scale of 1:150 000 to 1:50 000. Date of publication: 1993. (files: 02012RC_IRD_PYF_POED_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02012RC_IRD_PYF_POED_1993_50000_IRD_PYF_AAAA_1993_143000000-2600.tif) 50. La scolarisation et la formation - II : planche 104. / Gay, J. C.; Ollier, C.; Scale of 1:12 400 000 to 1:9 850 000. Date of publication: 1993. (files: 15333RC_IRD_PYF_POED_1993_12400000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15333RC_IRD_PYF_POED_1993_9850000_IRD_PYF_AAAA_1993_143000000-2600.tif) 51. La structure et la géologie des atolls - I : Fangataufa du fond de l'océan à l'atoll : planche 31. / Ruzié, G.; Buigues, D.; Gachon, A.; Guille, G.; Scale of 1:150 000. Date of publication: 1993. (files: 01961RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01961RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01961RC_IRD_PYF_GEOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 52. La structure et la géologie des atolls - II : l'atoll de Moruroa : planche 32. / Guille, G.; Buigues, D.; Gachon, A.; Ruzié, G.; Scale of 1:150 000. Date of publication: 1993. (files: 01962RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01962RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01962RC_IRD_PYF_GEOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 53. La structure et la géologie des atolls - III : le lagon de Moruroa : planche 33. / Buigues, D.; Bablet, J. P.; Gachon, A.; Scale of 1:150 000 to 1:15 000. Date of publication: 1993. (files: 01963RC_IRD_PYF_GEOL_1993_15000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01963RC_IRD_PYF_GEOL_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01963RC_IRD_PYF_GEOL_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01963RC_IRD_PYF_GEOL_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01963RC_IRD_PYF_GEOL_1993_30000_IRD_PYF_AAAA_1993_143000000-2600.tif) 54. La synthèse démographique : planche 81. / Vigneron, Emmanuel; Scale of 1:16 500 000 to 1:800 000. Date of publication: 1993. (files: 01995RC_IRD_PYF_PODM_1993_16500000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01995RC_IRD_PYF_PODM_1993_16500000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01995RC_IRD_PYF_PODM_1993_16500000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01995RC_IRD_PYF_PODM_1993_800000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01995RC_IRD_PYF_PODM_1993_800000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01995RC_IRD_PYF_PODM_1993_800000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 55. La typologie des îles : planche 23. / Morhange, C.; Scale of 1:10 000 000. Date of publication: 1993. (file: 01956RC_IRD_PYF_ESOR_1993_10000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 56. La végétation - I : îles du Vent : planche 54. / Florence, Jacques; Birnbaum, Ph. (collab.) Scale of 1:150 000. Date of publication: 1993. (files: 01976RC_IRD_PYF_VEGE_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01976RC_IRD_PYF_VEGE_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 57. La végétation - II : îles Marquises, îles Tuamotu, îles Australes : planche 55. / Florence, Jacques; Scale of 1:150 000. Date of publication: 1993. (files: 15321RC_IRD_PYF_VEGE_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15321RC_IRD_PYF_VEGE_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15321RC_IRD_PYF_VEGE_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 58. La vie politique : planche 111. / Saura, B.; Vigneron, Emmanuel; Scale of 1:16 500 000 to 1:400 000. Date of publication: 1993. (files: 02017RC_IRD_PYF_POPO_1993_16500000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02017RC_IRD_PYF_POPO_1993_16500000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02017RC_IRD_PYF_POPO_1993_400000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02017RC_IRD_PYF_POPO_1993_400000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 59. Le champ magnétique terrestre : planche 24. / Barsczus, H.G.; Scale of 1:40 000 000 to 1:13 500 000. Date of publication: 1993. (files: 01957RC_IRD_PYF_GPMA_1993_13500000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01957RC_IRD_PYF_GPMA_1993_40000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01957RC_IRD_PYF_GPMA_1993_40000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01957RC_IRD_PYF_GPMA_1993_40000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01957RC_IRD_PYF_GPMA_1993_40000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif) 60. Le domaine maritime de la Polynésie française : planche 3. / Dupon, J.F.; Scale of 1:111 111 100 to 1:28 000 000. Date of publication: 1993. (files: 01946RC_IRD_PYF_MARI_1993_111111100_IRD_PYF_AAAA_1993_143000000-2600.tif, 01946RC_IRD_PYF_MARI_1993_28000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 61. Le peuplement ancien : planche 59. / Vigneron, Emmanuel; Scale of 1:55 500 000. Date of publication: 1993. (files: 01980RC_IRD_PYF_AGCU_1993_-----01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01980RC_IRD_PYF_AGCU_1993_-----02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01980RC_IRD_PYF_POPE_1993_55500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 62. Le sport : planche 105. / Gay, J. C.; Scale of 1:60 000 000 to 1:750 000. Date of publication: 1993. (files: 02013RC_IRD_PYF_INSO_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02013RC_IRD_PYF_INSO_1993_60000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02013RC_IRD_PYF_INSO_1993_750000_IRD_PYF_AAAA_1993_143000000-2600.tif) 63. Le système de soins : planche 100. / Vigneron, Emmanuel; Scale of 1:12 000 000 to 1:500 000. Date of publication: 1993. (files: 02010RC_IRD_PYF_INSA_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02010RC_IRD_PYF_INSA_1993_500000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02010RC_IRD_PYF_SANT_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02010RC_IRD_PYF_SANT_1993_500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 64. Le temps de la mort importée : planche 73. / Vigneron, Emmanuel; Scale of 1:1 000 000 to 1:150 000. Date of publication: 1993. (files: 01944RC_IRD_PYF_HIST_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01944RC_IRD_PYF_SANT_1993_1000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 65. Le tourisme - I : planche 93. / Gay, J. C.; Scale of 1:12 000 000 to 1:150 000. Date of publication: 1993. (files: 02005RC_IRD_PYF_INTO_1993_----_IRD_PYF_AAAA_1993_143000000-2600.tif, 02005RC_IRD_PYF_INTO_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 02005RC_IRD_PYF_INTO_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif) 66. Le tourisme - II : planche 94. / Gay, J. C.; Scale unknown. Date of publication: 1993. (file: 15330RC_IRD_PYF_INTO_1993_----_IRD_PYF_AAAA_1993_143000000-2600.tif) 67. Le volcanisme et la sismicité - I : planche 26. / Talandier, J.; Scale of 1:17 500 000. Date of publication: 1993. (file: 01959RC_IRD_PYF_GPHY_1993_17500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 68. Le volcanisme et la sismicité - II : planche 27. / Talandier, J.; Scale of 1:500 000. Date of publication: 1993. (file: 15312RC_IRD_PYF_GPHY_1993_500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 69. Les "archipels" de la viabilité : planche 112. / Scale of 1:24 000 000. Date of publication: 1993. (file: 02018RC_IRD_PYF_PODM_1993_24000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 70. Les aspects fonciers - I : planche 82. / Ravault, François; Scale of 1:20 000 to 1:15 000. Date of publication: 1993. (files: 01996RC_IRD_PYF_AGFN_1993_15000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01996RC_IRD_PYF_AGFN_1993_20000_IRD_PYF_AAAA_1993_143000000-2600.tif) 71. Les aspects fonciers - II : planche 83. / Ravault, François; Scale of 1:83 000. Date of publication: 1993. (file: 15328RC_IRD_PYF_AGFN_1993_83000_IRD_PYF_AAAA_1993_143000000-2600.tif) 72. Les centres urbains secondaires : planche 109. / Morhange, C.; Scale of 1:80 000 to 1:20 000. Date of publication: 1993. (files: 02015RC_IRD_PYF_ESUR_1993_20000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02015RC_IRD_PYF_ESUR_1993_20000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 02015RC_IRD_PYF_PODE_1993_80000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 02015RC_IRD_PYF_PODE_1993_80000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 73. Les courants et les hydroclimats : planche 20. / Rougerie, Francis; Wauthy, Bruno; Scale unknown. Date of publication: 1993. (files: 01954RC_IRD_PYF_CLIM_1993_-----01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01954RC_IRD_PYF_CLIM_1993_-----02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01954RC_IRD_PYF_CLIM_1993_-----03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01954RC_IRD_PYF_CLIM_1993_-----04_IRD_PYF_AAAA_1993_143000000-2600.tif) 74. Les cycles de l'économie coloniale : planche 72. / Vigneron, Emmanuel; Scale of 1:21 000 000 to 1:400 000. Date of publication: 1993. (files: 01990RC_IRD_PYF_AGEL_1993_21000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_1000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_12000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_1300000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_21000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_400000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01990RC_IRD_PYF_HIST_1993_400000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 75. Les fonds sous-marins : planche 18. / Barsczus, H.G.; Scale of 1:10 000 000. Date of publication: 1993. (file: 01952RC_IRD_PYF_BAME_1993_10000000_IRD_PYF_AAAA_1993_143000000-2600.tif) 76. Les îles Australes et les îles Gambier : oro-hydrographie : planche 17. / Dupon, J.F.; Scale of 1:21 000 000 to 1:150 000. Date of publication: 1993. (files: 15310RC_IRD_PYF_ILSI_1993_21000000_IRD_PYF_AAAA_1993_143000000-2600.tif, 15310RC_IRD_PYF_TOOH_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 15310RC_IRD_PYF_TOOH_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 15310RC_IRD_PYF_TOOH_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 77. Les îles du Vent : oro-hydrographie : planche 7. / Dupon, J.F.; Scale of 1:150 000. Date of publication: 1993. (files: 05785RC_IRD_PYF_TOOH_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 05785RC_IRD_PYF_TOOH_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 78. Les îles du Vent : planche 6. / Dupon, J.F.; Scale of 1:250 000 to 1:100 000. Date of publication: 1993. (files: 04122RC_IRD_PYF_EVPH_1993_100000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 04122RC_IRD_PYF_EVPH_1993_100000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 04122RC_IRD_PYF_EVPH_1993_100000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 04122RC_IRD_PYF_EVPH_1993_250000_IRD_PYF_AAAA_1993_143000000-2600.tif) 79. Les îles Sous-le-Vent : oro-hydrographie : planche 8. / Dupon, J.F.; Scale of 1:150 000. Date of publication: 1993. (files: 11352RC_IRD_PYF_TOOH_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 11352RC_IRD_PYF_TOOH_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 11352RC_IRD_PYF_TOOH_1993_150000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 80. Les insectes hématophages : planche 58. / Séchan, Yves; Scale of 1:17 000 000. Date of publication: 1993. (files: 01979RC_IRD_PYF_ENTO_1993_17000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01979RC_IRD_PYF_ENTO_1993_17000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01979RC_IRD_PYF_ENTO_1993_17000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif, 01979RC_IRD_PYF_ENTO_1993_17000000-04_IRD_PYF_AAAA_1993_143000000-2600.tif, 01979RC_IRD_PYF_ENTO_1993_17000000-05_IRD_PYF_AAAA_1993_143000000-2600.tif, 01979RC_IRD_PYF_ENTO_1993_17000000-06_IRD_PYF_AAAA_1993_143000000-2600.tif) 81. Les langues - I : planche 66. / Lemaître, Yves; Tryon, D.; Scale of 1:42 500 000. Date of publication: 1993. (file: 01985RC_IRD_PYF_LING_1993_42500000_IRD_PYF_AAAA_1993_143000000-2600.tif) 82. Les migrations humaines : planche 80. / Baudchon, G.; Vigneron, Emmanuel; Scale of 1:15 000 000. Date of publication: 1993. (files: 01994RC_IRD_PYF_POMI_1993_15000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01994RC_IRD_PYF_POMI_1993_15000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01994RC_IRD_PYF_POMI_1993_15000000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 83. Les monts sous-marins : planche 19. / Baudry, Nicolas; Scale of 1:6 000 000. Date of publication: 1993. (files: 01953RC_IRD_PYF_GPGR_1993_6000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01953RC_IRD_PYF_GPGR_1993_6000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 84. Les mouvements naturels de population : planche 79. / Vigneron, Emmanuel; Scale of 1:12 000 000. Date of publication: 1993. (files: 01993RC_IRD_PYF_POPU_1993_12000000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01993RC_IRD_PYF_POPU_1993_12000000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 85. Les oiseaux : planche 57. / Thibault, J. C.; Monnet, Claude; Scale of 1:23 500 000 to 1:450 000. Date of publication: 1993. (files: 01978RC_IRD_PYF_BGFA_1993_19700000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_19700000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_23500000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_450000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_450000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_866000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_866000-02_IRD_PYF_AAAA_1993_143000000-2600.tif, 01978RC_IRD_PYF_BGFA_1993_866000-03_IRD_PYF_AAAA_1993_143000000-2600.tif) 86. Les Pentes : planche 34. / Bonvallot, J.; Scale of 1:150 000. Date of publication: 1993. (files: 01964RC_IRD_PYF_TOPE_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01964RC_IRD_PYF_TOPE_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 87. Les peuplements coralliens : planche 48. / Faure, G.; Scale of 1:150 000 to 1:12 000. Date of publication: 1993. (files: 01970RC_IRD_PYF_BGEO_1993_12000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01970RC_IRD_PYF_BGEO_1993_150000-01_IRD_PYF_AAAA_1993_143000000-2600.tif, 01970RC_IRD_PYF_BGEO_1993_150000-02_IRD_PYF_AAAA_1993_143000000-2600.tif) 88. Les peuplements d'algues : planche 49. / Payri, C.; Denizot, M.; Scale of 1:50 000 to 1:12 000. Date of publication: 1993. (files: 01971RC_IRD_PYF_BGEO_1993_12000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01971RC_IRD_PYF_BGEO_1993_50000_IRD_PYF_AAAA_1993_143000000-2600.tif) 89. Les peuplements de mollusques : planche 50. / Bonvallot, J.; Scale of 1:250 000 to 1:50 000. Date of publication: 1993. (files: 01972RC_IRD_PYF_BGFA_1993_150000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01972RC_IRD_PYF_BGFA_1993_250000_IRD_PYF_AAAA_1993_143000000-2600.tif, 01972RC_IRD_PYF_BGFA_1993_50000_IRD_PYF_AAAA_1993_143000000-2600.tif)

Les grandes caractéristiques hydrobiologiques du bassin de Marennes-Oléron sont définies par quatre campagnes saisonnières de 120 prélèvements chacune effectuée-, en 15 stations en demi-cycle de marée. Les salinités y fluctuent de 10 '/rr. et ce secteur peut donc être assimilé à un vaste estuaire contrôlé principalement par les apports fluviaux de la Charente. La turbidité reste élevée souvent supérieure à 100 mg.I"', les teneurs en oxygène dissous montrent un déficit en amont de la Charente et de la Seudre de 4 mg.L1 tandis que les sels nutritifs sont apportés par la Charente pour les nitrates, phosphates et silicates. Ces derniers suivent les courbes de dilution théorique excepté lors des poussées phytoplanctoniques et lors des crues hivernales. Lors de ces crues, les nitrates semblent soit apportés par la Gironde, soit dus à une minéralisation organique. Au même moment, les phosphates pourraient être absorbés sur les particules et être piégés dans les sédiments. Les biomasses phytoplanctoniques exprimées par les teneurs en chlorophylle a sont supésieures à 30 f^-g.1 ' en amont des estuaires au printemps avec des teneurs en phéopigmenls pouvants dépasser 200 IUJ.1 . par contre, dans le bassin, les teneurs ne dépassent guère 10 fig.l ''. Les concentrations en ATP montrent que peu de phytoplancton est physiologiquement actif en particulier dans les estuaires, tandis que les dosages de protéines permettent de quantifier la part des apports allochtone - par rapport à la production autochtone des estuaires. Line analyse factorielle des correspondances définit le schéma général hydrobiologique du bassin estuarien en précisant que 'e rôle de la Charente ne se limite pas à l'apport en sels minéraux azotés et phosphatés, mais aussi à l'apport d'une biomasse phytoplanctonique d'eau douce en voie de dégénérescence. Les auteurs proposent qu'une nouvelle stratégie d'échantillonnage, mieux adaptée aux objectifs recherchés, soit suivie ultérieurement en assurant des prélèvements en cycle de marée mais avec une périodicité la plus élevée possible. Four seasonal compaigns providing a sampling of 15 stations each followed during half a tide cycle, i.e. 120 water samples permit the definition of the main hydrobiological features of Marennes-Oleron Bay: salinity and turbidity, phytoplanktonic biomasses, ATP concentrations. The authors suggest that a new way of adapted sampling to their objectives, will work out in the future by sampling during tidal cycles but as frequently as possible.

Le stock de moules en place en avril 2002 sur les bouchots de la baie du Mont Saint-Michel a été estimé, en volume, en poids et en nombre. Pour ce faire, un plan d'échantillonnage a été conçu, mis en oeuvre, puis optimisé, en prenant en compte la disposition spatiale du stock et les contraintes matérielles et humaines (en particulier le nombre de personnes et le nombre de jours de travail disponible). Ce plan utilise les procédés de stratification, échantillonnage par degrés, estimation par régression, afin d'obtenir la meilleure précision possible compte tenu du coût dédié à l'opération. L'opération n'aurait pu être menée sans le concours actif des professionnels du secteur : elle a mobilisé un bateau et 5 personnes, une première journée, pour l'estimation du taux d'ensemensement (nombre et localisation des pieux garnis de moules). 14 équipes de 2 personnes ont ensuite arpenté l'ensemble du secteur, les 2 jours suivants, pour mesurer les hauteurs, circonférences, épaisseurs de moules in situ, et prélever 1 litre de moules par pieu sélectionné, (pour pesée et dénombrement). L'estimation est de 3.4 milliards de moules à un poids moyen de 3.2 g, soit un poids total de 11000 tonnes (à 6% près selon les calculs de précision). Le rapport entre ce stock instantané et la production commerciale estimée à 10 000 tonnes les mois suivants (entre juin et décembre) devra être précisé. The quantity of mussels cultivated on wooden poles called « bouchots », in Mont Saint-Michel bay, has been estimated in april 2002, by volume, number and weight. To do so, a sampling strategy has been conceived, operated and then optimized, taking into account the spatial distribution of this stock and the material and human constraints (especially the amount of persons and working days available). The sampling plan uses procedures of stratification, degrees, regression, so as to reach the optimum precision related to cost. The operation took a great advantage of the efficient help of mussel farmers. During the first day, the task consisted to estimate the number and position of poles occupied by mussels, with the help of 5 persons on boat. The following 2 days, 14 persons walked through the entire area, to estimate mussels volumes in situ and sample one liter on selected poles, for number and weight subsequent estimations. As a whole, around 3.4 billions of mussels, with a mean weight of 3.2 grams, were estimated at that time, weighing more than 11 000 tons. The relation between this instant stock and the next commercial production remains to be precised.

The species composition and spatial distribution of macrofaunal assemblages in intertidal sands of Arcachon Bay, on the southwestern Atlantic coast of France, were investigated through a quantitative sampling of twenty stations representative of the various sandy habitats found in the bay, excluding the exposed beaches. Sampling was done on a single occasion, during the winter of 1988. A total of 150 macrobenthic species (> 1 mm) were collected. The abundance of macrofauna ranged from 89 to 52000 ind.m-2 (with a high dominance of the gastropod Hydrobia ulvae in some sites) and the biomass ranged from 1.3 to 42.5 g.m-2 dry weight. Thirteen additional species (belonging to temporary meiofauna and small macrofauna) were also sampled in the sieving fraction comprised between 1 mm and 100 mum. In this size fraction, the highest densities were those of H. ulvae juveniles in the inner bay and the small polychaete Parapionosyllis gestans in the outer bay. Mean abundance of total fauna > 100 mum (excluding permanent meiofauna) was about 35000 ind.m-2 in both sheltered and semi-exposed stations. A correspondence analysis of the distribution of species among stations followed by an automatic hierarchical classification identified six benthic assemblages, which were also characterized in terms of species dominance, constancy and fidelity. Two assemblages, corresponding to the boreal Macoma community, were distinguished in the sands at mid-tide level in the inner part of the bay: station-group A was characterized by Neomysis integer and Streblospio shrubsolii, together with a low number of species occurring in low-salinity estuarine waters; station-group B, with Cerastoderma edule, Arenicola marina, and Nereis diversicolor as characteristic species, was a sandy facies of the Macoma community dominated by C. edule. Three other assemblages, each with a high species richness, included several species of the boreal Lusitanian Tellina community: station-group C: a Eunice vittata-Tubificoides benedeni assemblage at lower tidal levels in the central part of the bay; station-group D: a Ruditapes decussatus-Goniada emerita assemblage at mid-tidal levels of the outer bay; station-group E: an Echinocardium cordatum-Magelona mirabilis-Aonides oxycephala assemblage at lower tidal levels of the outer bay. A sixth assemblage (station-group F) was an Ophelia bicornis-Bathyporeia sarsi assemblage in fine dune sands of the outer bay. A discriminant analysis including five environmental variables (tidal level, salinity, sediment median, fine particles and organic contents) revealed the first two variables to be the most important factors in the ordination of stations. With these five variables, only 65 % of the stations were correctly classified in the station-groups identified by correspondence analysis. Among the other possible factors governing the distribution of benthic assemblages, the importance of both exposure and circulation of water masses is stressed. Sheltered stations had a mean biomass of 22.8 g.m-2 dry weight and a mean species richness of 17.7 species; in semi-exposed stations, these values were 11.5 g.m-2 dry weight and 36.1 species.

In order to assess the impact of crustacean zooplankton on phytoplankton and protozoan ciliates in the Sahela reservoir under semi-arid climate, we conducted experiments during the period from July to December 1999 at the deepest point in the lake (15 m). Samplings and measurements were carried out in diffusion chambers submerged in situ over a period of 7 h without (control chambers) and with (experimental chambers) crustacean zooplankton. During these experiments, counts were conducted on phytoplankton and ciliates to determine the abundance and the mortality of these organisms due to zooplankton in each diffusion chambers at t = 0 and t = 7 h of incubation. The study showed that the growth rates of phytoplankton and ciliates populations varied between 0.02 and 0.05 h-1 and from 0.01 to 0.07 h-1, respectively. The mortality caused by zooplankton grazing fluctuated from 0.07 to 0.2 h-1 of phytoplankton and from 0.01 to 0.2 h-1 of ciliates. These mortalities were significantly and positively correlated with the growth rates (r = 0.8; p < 0.02; n = 9). Moreover, the heavy predation by the crustacean zooplankton was exerted on small-sized phytoplankton and ciliates and we demonstrated the relationships between protozoans and zooplankton for the transfer of matter and energy in aquatic food webs. Furthermore, the crustacean zooplankton metabolism was different, whether zooplankton was present in diffusion chambers or in the lake.

Les auteurs mettent en relation le recrutement, les productions commercialisées, les stocks en élevage des huîtres Crassostrea gigas et Crassostrea angulata avec les statistiques de la météorologie Nationale pour les années correspondantes : 1885-1984. La température agit sur la date de ponte mais n'explique que partiellement les défauts de recrutement qui présentent moins d'impact sur la production commercialisée que sur le stock d'huîtres. Les caractéristiques annuelles et saisonnières des précipitations et des températures de l'air ne montrent pas de corrélations étroites avec les variations de la production et du stock pour ces populations cultivées contrairement à la sensibilité des populations naturelles de mollusques vis à vis des facteurs climatiques. The authors are comparing the recruitment, the commercialised production, the cultivated biomasses of oysters Crassostrea gigas and Crassostrea angulata with the statistics of the meteorology (1885-1984). The temperature plays a role up on the date of spawning but partialy explains the lack of recruitment, which has less impact on the commercialised production than on the total biomass. The annual and seasonal characteristics of the precipitations and water temperatures do not show tight correlations with the variations of the production and of the biomass, for these cultivated populations in opposition with the sensitivity of the natural molluscan populations towards the climatic factors.

Le document présente une méthode originale d'étude de la répartition de la crépidule dans la baie de Saint-Brieuc (Manche occidentale), au moyen du sonar latéral et de l'imagerie sous-marine. Une évaluation quantitative du stock complète cette distribution et permet d'estimer la biomasse de crépidules dans la baie à environ 250 000 tonnes (poids frais). The aim of this report is to provide an original method of mapping slipper limpet beds in the bay of Saint-Brieuc (Western Channel) by means of side scan sonar and submarine video. An evaluation of the biomass completes the distribution of limpets. The total fresh weight is about 250 000 tons

On the bathyal slope for continental margins, steep and rocky substrates punctuated with cliffs and collapsing zones are frequently found. As survey and sampling with the classical technics from the sea surface is practically impossible in such an environment, in situ exploration with a submersible allows significant advances in ecology, with implications in paleoenvironment reconstruction. Mixing of material from shallow-water and deep-sea origins into bathyal sedimentation suggests that the so-called "fossil assemblages of outer platform" were frequently misinterpreted. Dense populations of animals closely related to fossil groups which were only considered as relict of the Past ("living fossils") and previously interpreted as shallow-water inhabitants during geological times can be discovered living in such bathyal communities. The role of bathyal ecological niches during global bioevents brings a new vision of the history of life in the Ocean through geological time and has to be further investigated. Examples from cruises monitoring the diving saucer Cyana (SP 3000) in the Bay of Biscay and off New Caledonia are given.

The primary production (phytoplankton and microphytobenthos) of a coastaL shallow water ecosystem (0.5 m) was investigated in two sandy areas, differing by their wave exposure. The physical and chemical parameters, the functional chlorophyll and pheopigments as well as the primary production were measured monthly, throughout a two-year study. The bivalve Ruditapes decussatus was the dominant species in the sheltered station (RD), whereas Donax trlmcu/us inhabited the other station (DT) which was exposed to the open-sea waves. Microphytic biomasses were determined after extracting chlorophyll a and pheopigments in 90% acetone. by spectrophotometric measurements before and after acidification. Gross hourly primary production was estimated by measuring the oxygen balance in light and dark enclosures. The mlcrophytobenthos was considered in the upper centimetre. The main characteristics of the water. temperature. salinity and dissolved oxygen were more variable in the sheltered area; the redox potential was generally lower in this sediment and the vertical profile revealed a "redox potential discontinuity"• which usually did not appear in the open site. In the water column (phytoplankton seasonal fluctuations were similar in both stations. The annual average values of Chla and primary production were equivalent (1.40±0.56 and 1.94±078 mg Chla.m2: 19.60±11.09 and 20.29±8.45mgCm- 2.h- 1 in RD and DT respectively). On the other hand. for the microphytobenthos. the autumn blooms were more pronounced in the sheltered station (RD) than in the wave-exposed one (DT). The annual average value of the biomass (ChIa in upper cm of sediment) was Il times higher at the RD than the DT station (42.89 ± 6.86 and 3.87 ± 1.84 mg Chla.m• 2) and the annual average of primary production 4 limes higher (19.94±6.13 and 4.77 ± 3.12 mgC m-2 .h-1). The benthic biomass was 30 times higher at the sheltered station (RD) than the planktonic one. whereas the primary production values were similar. In the wave-exposed station (DT), the benthic biomass was only twice that of the planktonic one and the planktonic primary production 4 times higher than the benthic one. The P/E ratios (assimilation numbers) indicated a better efficiency at the planktonic level [14 mgC(mg ChIa) -1.h-1 for the sheltered site and 10.46 for the open station]. They were only of 0.46 and 1.23 mgC(mg Chla) -1 - h-1 for the benthos. Such results revealed that the primary production did not exhibit the same difference between the two stations as the chlorophylI A correlation analysis gave evidence of strong relationships between both stations for the pelagic parameters, but no correlations were found between the two sites at the benthic level. When considering the primary producers (plankton + benthos) as a whole. the sheltered station was richer and more productive than the wave-exposed one. The waters were similar in both sites. indicating a common origin, but the productivity was more important in the sheltered area. due to the richness of the benthic microflora On a comparé durant deux années la biomasse (Chla fonctionnelle) et la production primaire (bilans d'oxygène) des microphytes benthiques et planctoniques de deux plages de sables fins (0,5 m de profondeur), soumises à des conditions hydrodynamiques différentes. La station de mode calme (RD) abrite notamment un peuplement de Ruditapes decussatus (pélécypode) tandis que la station de mode agité (DT) soumise à l'influence du large, est habitée par des peuplements d'un autre pélécypode, Donax trunculus. Dans le compartiment pélagique (phytoplancton) les variations saisonnières sont à peu près identiques dans les deux stations. Les moyennes annuelles de la biomasse et de la production primaire sont sensiblement équivalentes (1.40 ± 0,56 et 1,94 ± 0,78 mg Chla.m - 2: 19,60 ± 11.09 et 20,29 ± 8.45 mgc.m - 2.h -1 respectivement en RD et DT). En revanche, dans le compartiment benthique (microphytobenthos), des floraisons d'automne sont plus accentuées à la station de mode calme (RD) qu'à la station de mode agité (DT). La moyenne annuelle de biomasse (1er cm d'épaisseur du sédiment) est Il fois plus élevée à la station RD qu'à la station DT (42,89 ± 6,86 et 3,87 ± 1,84 mg Chla.m- 2) et la moyenne de la production primaire 4 fois supérieure (19,94 ± 6,13 contre 4,77 ± 3,12 mgC.m- 2.h- 1). Dans la station RD (calme), la biomasse benthique (1er centimètre) est 30 fois supérieure à la biomasse planctonique, alors que les productions primaires sont équivalentes. Dans la station de mode agité (DT) la biomasse benthique est seulement double de la biomasse planctonique et la production primaire planctonique est 4 fois supérieure à la production benthique. L'étude des corrélations montre que des liaisons étroites existent entre les deux stations pour les paramètres du domaine pélagique, alors que dans le domaine benthique, les moyennes et les évolutions sont différentes dans les deux sites. La station de sables fins de mode calme est, au total. à l'échelon primaire (plancton + benthos), plus riche et plus productive que la station de mode agité.

Because of strong tidal currents, the bottom of the Dover Strait consists of coarse sediment which is colonized by a pebble community. A quantitative study, based on 0.1 m(2) quadrat samples taken by divers, was conducted on this community to establish the richness of benthic macrofauna (in terms of biomass and diversity) and to provide conclusive data on global community structure (spatial and temporal heterogeneity, trophic structure). Eight samples were taken between June 1992 and June 1993, eight replicates being taken on each sampling visit. One hundred and one species were identified, in 10 zoological groups, and a mean biomass of 281 g.m(-2) (ash free dry weight) was calculated. The Shannon diversity index was low (H' = 1.24) because of the strong dominance of three species. The echinoderm Ophiothrix fragilis and the two cnidarians Urticina felina and Alcyonium digitatum accounted for at least 97 % of the total biomass at all sampling periods. Spatial heterogeneity, studied at the settle of 0.1 m(2) by hierarchical cluster analysis based on Sorensen's qualitative similarity index and by Factor Correspondence Analysis on biomasses,seemed low and was due to the strong dispersion of rare species. Hierarchical cluster analysis and FCA, performed at the scale of 0.8 m(2) on periods of sampling, showed temporal homogeneity. The seasonal influence on biomass did not affect its distribution in species or trophic groups. Suspension-feeders accounted for 99.8% of total biomass.