Cirad

Nicolas PICARD

Publications

2014
  1. Diariétou Sambakhe, Mathieu Fortin, Jean-Pierre Renaud, Christine Deleuze, Philippe Dreyfus, Nicolas Picard. Prediction bias induced by plot size in forest growth models. Forest Science, in press.
  2. Quentin Moundounga Mavouroulou, Alfred Ngomanda, Nestor Laurier Engone Obiang, Judicaël Lebamba, Hugues Gomat, Géraud Sidoine Mankou, Joël Loumeto, Donald Midoko Iponga, Franck Kossi Ditsouga, Roland Zinga Koumba, Karl Henga Botsika Bobé, Clency Mikala Okouyi, Raoul Nyangadouma, Nicaise Lépengué, Bertrand Mbatchi, Nicolas Picard. How to improve allometric equations to estimate forest biomass stocks? Some hints from a central African forest. Canadian Journal of Forest Research, in press. 
  3. Nestor Laurier Engone Obiang, Alfred Ngomanda, Oliver Hymas, Eric Chézeaux, Nicolas Picard. Diagnosing the demographic balance of two light-demanding tree species populations in central Africa from their diameter distribution. Forest Ecology and Management, 313:55-62.
  4. Alfred Ngomanda, Nestor Laurier Engone Obiang, Judicaël Lebamba, Quentin Moundounga Mavouroulou, Hugues Gomat, Géraud Sidoine Mankou, Joël Loumeto, Donald Midoko Iponga, Franck Kossi Ditsouga, Roland Zinga Koumba, Karl Henga Botsika Bobé, Clency Mikala Okouyi, Raoul Nyangadouma, Nicaise Lépengué, Bertrand Mbatchi, Nicolas Picard (2014). Site-specic versus pantropical allometric equation: Which option to estimate the biomass of a moist central African forest? Forest Ecology and Management, 312:1-9.

    2013
  5. Florence Palla, Nicolas Picard, Bernard Riéra, Jean-Paul Rudant (2013). Caractérisation des cortèges floristiques et leur distribution spatiale dans la mosaïque forêt-savane au Parc National de la Lopé (Gabon). In: N. Beau, S. Dessein S., Robbrecht E. (Eds.), African Plant Diversity, Systematics and Sustainable Development - Proceedings of the XIXth AETFAT Congress, held at Antananarivo, Madagascar, 26-30 April 2010. Scripta Botanica Belgica 50, National Botanic Garden of Belgium, Meise, Belgium.
  6. Matieu Henry, Antonio Bombelli, Carlo Trotta, Alfredo Alessandrini, Luca Birigazzi, Gaël Sola, Ghislain Vieilledent, Philippe Santenoise, Fleur Longuetaud, Ricardo Valentini, Nicolas Picard, Laurent Saint-André (2013). GlobAllomeTree: international platform for tree allometric equations to support volume, biomass and carbon assessment. iForest - Biogeosciences and Forestry, 6:326-330.
  7. Jacques-François Mavoungou, Nicolas Picard, Lisette T. Kohagne, B. M'Batchi, J. Gilles, Gérard Duvallet (2013). Spatio-temporal variation of biting flies, Stomoxys spp. (Diptera: Muscidae), along a man-made disturbance gradient, from primary forest to the city of Makokou (North-East, Gabon). Medical and Veterinary Entomology, 27(3):339–345.
  8. Dakis-Yaoba Ouédraogo, Frédéric Mortier, Sylvie Gourlet-Fleury, Vincent Freycon, Nicolas Picard (2013). Slow-growing species cope better with drought: evidence from long-term measurements in a tropical semi-deciduous rainforest of Central Africa. Journal of Ecology, 101(6):1459-1470.
  9. Florence Palla, Sophie Gachet, Nicolas Picard, Bernard Riéra (2013). Defining vegetation groups from life-history traits for the management of a savannah-forest mosaic in the Lopé National Park, Gabon. Journal of Tropical Forest Science, 25(4):454–466.
  10. Sylvie Gourlet-Fleury, Frédéric Mortier, Adeline Fayolle, Fidèle Baya, Dakis Ouédraogo, Fabrice Benedet, Nicolas Picard (2013). Tropical forest recovery from logging: a 24 year silvicultural experiment from Central Africa. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences, 368(1625):20120302.
  11. Jingjing Liang, Nicolas Picard (2013). Matrix model of forest dynamics: an overview and outlook. Forest Science, 59(3):359-378.
  12. Nicolas Picard (2013). Couplage de modèles en foresterie : quels sont les pièges ? Cahiers Agricultures, 22(2):104-111.
  13. Nestor Engone Obiang, Alfred Ngomanda, Lee J. T. White, Kathryn J. Jeffery, Eric Chézeaux, Nicolas Picard (2013). Disentangling the effect of size and competition: a growth model for Aucoumea klaineana. Annals of Forest Science, 70(3):241-249.
  14. Frédéric Mortier, Vivien Rossi, Gilles Guillot, Sylvie Gourlet-Fleury, Nicolas Picard (2013). Population dynamics of species-rich ecosystems: the mixture of matrix population models approach. Methods in Ecology and Evolution, 4(4):316-326.
  15. Nicolas Picard, Avner Bar-Hen (2013). Cluster analysis for two-level data sets: classifying tree species from individual measurements. Ecological Informatics, 15:1-7.

    2012
  16. Nestor Laurier Engone Obiang, Alfred Ngomanda, Lee J. T. White, Kathryn J. Jeffery, Eric Chézeaux, Nicolas Picard (2012). A growth model for azobé, Lophira alata, in Gabon. Bois et Forêts des Tropiques, 314(4):65-72.
  17. Gaël Sola, Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Résumé du manuel de construction d'équations allométriques pour l'estimation du volume et la biomasse des arbres : de la mesure de terrain à la prédiction. FAO, Rome et CIRAD, Montpellier, 19 p. E-ISBN 978-92-5-107347-6
  18. Gaël Sola, Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Summary of the manual for building tree volume and biomass allometric equations. From field measurement to prediction. FAO, Rome and CIRAD, Montpellier, 18 p. E-ISBN 978-92-5-107347-6
  19. Gaël Sola, Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Resumen del manual de construcción de ecuaciones alométricas para estimar el volumen y la biomasa de los árboles: del trabajo de campo a la predicción. FAO, Rome y CIRAD, Montpellier, 17 p.
  20. Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Manuel de construction d'équations allométriques pour l'estimation du volume et la biomasse des arbres : de la mesure de terrain à la prédiction. FAO, Rome et CIRAD, Montpellier, 220 p. E-ISBN 978-92-5-207347-5
  21. Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Manual for building tree volume and biomass allometric equations: from field measurements to prediction. FAO, Rome and CIRAD, Montpellier, 215 pp. E-ISBN 978-92-5-107347-6
  22. Nicolas Picard, Laurent Saint-André, Matieu Henry (2012). Manual de construcción de ecuaciones alométricas para estimar el volumen y la biomasa de los árboles: del trabajo de campo a la predicción. FAO, Rome y CIRAD, Montpellier, 223 p. E-ISBN 978-92-5-307347-4
  23. Nicolas Picard, Sylvie Gourlet-Fleury, Eric Forni (2012). Stock recovery rates are not the panacea to assess timber yield sustainability: evidence from managed Central African forests. Forest Ecology and Management, 281:12-22.
  24. Nicolas Picard, Peter Köhler, Frédéric Mortier, Sylvie Gourlet-Fleury (2012). A comparison of five classifications of species into functional groups in tropical forests of French Guiana. Ecological Complexity, 11:75-83.
  25. Nicolas Picard, Avner Bar-Hen (2012). A criterion based on the Mahalanobis distance for cluster analysis with subsampling. Journal of Classification, 29(1):23-49.
  26. Nicolas Picard, Sylvie Gourlet-Fleury, Eric Forni (2012). Estimating damage from selective logging and implications for tropical forest management. Canadian Journal of Forest Research, 42(3):605-613.
  27. Alfred Ngomanda, Quentin Moundounga Mavouroulou, Nestor Laurier Engone Obiang, Donald Midoko Iponga, Jacques-François Mavoungou, Nicaise Lépengué, Nicolas Picard, Bertrand Mbatchi (2012). Derivation of diameter measurements for buttressed trees, an example from Gabon. Journal of Tropical Ecology, 28(3):299-302.
  28. Nicolas Picard, Matieu Henry, Frédéric Mortier, Carlo Trotta, Laurent Saint-André (2012). Using Bayesian model averaging to predict tree aboveground biomass. Forest Science, 58(1):15-23.
  29. Thomas Perot, Nicolas Picard (2012). Mixture enhances productivity in a two-species forest: evidence from a modelling approach. Ecological Research, 27(1):83-94.

    2011
  30. Dakis-Yaoba Ouédraogo, Denis Beina, Nicolas Picard, Frédéric Mortier, Fidèle Baya, Sylvie Gourlet-Fleury (2011). Thinning after selective logging facilitates floristic composition recovery in a tropical rain forest of Central Africa. Forest Ecology and Management, 262(12):2176-2186.
  31. Nicolas Picard, Salomon Namkosserena, Yves Yalibanda, Fidèle Baya, Sylvie Gourlet-Fleury, Robert Nasi (2011). Assessing the sustainable management of Entandrophragma cylindricum using the stock recovery rate. In: Geldenhuys C.J., Ham C. and Ham H. (Eds.) Sustainable forest management in Africa: some solutions to natural forest management problems in Africa. Proceedings of the Sustainable Forest Management in Africa Symposium, Stellenbosch, South Africa, 3-7 November 2008. Stellenbosch University, Matieland, South Africa, p.185-196.
  32. Florence Palla, Nicolas Picard, Kate A. Abernethy, Tharcisse Ukizintambara, Elizabeth C. White, Bernard Riéra, Jean-Paul Rudant, Lee White (2011). Structural and floristic typology of the forests in the forest-savanna mosaic of the Lopé National Park, Gabon. Plant Ecology and Evolution, 144(3):255–266.
  33. Matieu Henry, Nicolas Picard, Carlo Trotta, Raphaël Manlay, Ricardo Valentini, Martial Bernoux, Laurent Saint-André (2011). Estimating tree biomass of sub-Saharan African forests: a review of available allometric equations. Silva Fennica, 45(3B):477-569.
  34. Nicolas Picard, Charly Favier (2011). A point-process model for variance-occupancy-abundance relationships. American Naturalist, 178(3):383-396.
  35. Sylvie Gourlet-Fleury, Vivien Rossi, Maxime Réjou-Méchain, Vincent Freycon, Adeline Fayolle, Laurent Saint-André, Guillaume Cornu, Jean Gérard, Jean-Michel Sarrailh, Olivier Flores, Fidèle Baya, Alain Billand, Nicolas Fauvet, Michel Gally, Matieu Henry, Didier Hubert, Alexandra Pasquier, Nicolas Picard (2011). Environmental filtering of dense-wooded species controls aboveground biomass stored in African moist forests. Journal of Ecology, 99(4):981–990. 
  36. Pierrette Chagneau, Marie-Pierre Etienne, Nicolas Picard, Cyril Piou, Vivien Rossi, Frédéric Mortier. Modélisation bayésienne hiérarchique pour l'écologie et la recherche environnementale. In: Actes des 43èmes Journées de Statistique de la Société Française de Statistique, Gammarth, Tunisie, 23-27 mai 2011, 5 p.
  37. Jérôme Ebuy Alipade, Jean-Pierre Lokombé Dimandja, Quentin Ponette, Denis Sonwa, Nicolas Picard (2011). Allometric equation for predicting aboveground biomass of three tree species. Journal of Tropical Forest Science, 23(2):125-132.
  38. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard, Jean-Noël Bacro (2011). A hierarchical Bayesian model for spatial prediction of multivariate non-Gaussian random fields. Biometrics, 67(1):97-105.

    2010
  39. Thierry Kahindo Maliro, Jean Lokombé, Nicolas Picard (2010). Volume equations and biomass estimates for three species in the Orientale Province, Democratic Republic of Congo. Southern Forests: a Journal of Forest Science 72(3-4):141–146.
  40. Jules Mitashi Kimvula, Constantin Lubini Ayingweu, Hippolyte Nshimba Seya, Nicolas Picard (2010). Recruitment limitation of Petersianthus macrocarpus in eastern DRC: seed or establishment limitation? Revue d'Ecologie (La Terre et la Vie), 65:369-375.
  41. Nestor Laurier Engone Obiang, Alfred Ngomanda, Raymonde Mboma, Thomas Nzabi, Alfred Ngoye, Lydia Atsima, Léopold Ndjélé, Jean-Pierre Mate, Christophe Lomba, Nicolas Picard (2010). Spatial pattern of central African rainforests can be predicted from average tree size. Oikos, 119(10):1643-1653.
  42. Nicolas Picard, Dakis Ouédraogo, Avner Bar-Hen (2010). Choosing classes for size projection matrix models. Ecological Modelling, 221(19):2270–2279.
  43. Nicolas Picard, Steen Magnussen, Ludovic Ngok Banak, Salomon Namkosserena, Yves Yalibanda (2010). Permanent sample plots for natural tropical forests: a rationale with special emphasis on Central Africa. Environmental Monitoring and Assessment, 164(1-4):279-295.
  44. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard, Jean-Noël Bacro (2010). Hierarchical Bayesian model for Gaussian, Poisson and ordinal random fields. In:P. M. Atkinson and C. D. Lloyd (Eds.), geoENV VII: Geostatistics for Environmental Applications, No. 16 in Quantitative Geology and Geostatistics, Springer-Verlag, New York, chapter 29.
  45. Nicolas Picard, Frédéric Mortier, Vivien Rossi, Sylvie Gourlet-Fleury (2010). Clustering species using a model of population dynamics and aggregation theory. Ecological Modelling, 221(2):152-160.

    2009
  46. Nicolas Picard, Ludovic Ngok Banak, Yves Yalibanda, Salomon Namkosserena (2009). The stock recovery rate in a Central African rainforest: an index of sustainability based on projection matrix models. Canadian Journal of Forest Research, 39(11):2138-2152.
  47. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard, Jean-Noël Bacro (2009). Processus de Cox marqué dirigé par un environnement prédit : application à la répartition spatiale de juvéniles en forêt tropicale humide. In : Actes des 41èmes Journées de Statistique de la Société Française de Statistique, Bordeaux, 25-29 mai 2009. 6 p.
  48. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard (2009). Designing permanent sample plots by using a spatially hierarchical matrix population model. Journal of the Royal Statistical Society, Series C (Applied Statistics), 58(3):345-367.
  49. Nicolas Picard, Avner Bar-Hen, Frédéric Mortier, Pierrette Chagneau (2009). Finding confidence limits on population growth rates: Bootstrap and analytic methods. Mathematical Biosciences, 219(1):23-31.
  50. Nicolas Picard, Avner Bar-Hen, Frédéric Mortier, Joël Chadoeuf (2009). The multi-scale marked area-interaction point process: a model for the spatial pattern of trees. Scandinavian Journal of Statistics, 36(1):23-41.
  51. Rosalie Akoma Mintsa, Christine Berge, Nicolas Picard (2009). Foot morphology and locomotor behavior of squirrels in Gabon rainforests. Comptes Rendus de l'Académie des Sciences, Biologies, 332(1):43-51.
  52. Nicolas Picard, Avner Bar-Hen, Frédéric Mortier, Joël Chadoeuf (2009). Understanding the dynamics of an undisturbed tropical rain forest from the spatial pattern of trees. Journal of Ecology, 91(1):97-108.

    2008
  53. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard, Jean-Noël Bacro (2008). Prediction of a multivariate spatial random field with continuous, count and ordinal outcomes. In: Julián M. Ortiz and Xavier Emery (Eds.) Proceedings of the VIII International Geostatistics Congress, Santiago, Chile, December 1-5, 2008. GECAMIN, Santiago, Chili, volume 1, pp.479-488.
  54. Steen Magnussen, Nicolas Picard, Christopher Kleinn (2008). A gamma-Poisson distribution of the point to the k nearest event distance. Forest Science, 54(4):429-441.
  55. Nicolas Picard, Sylvie Gourlet-Fleury (2008). Manuel de référence pour l’installation de dispositifs permanents en forêt de production dans le Bassin du Congo. COMIFAC, Yaoundé. 265 p.
  56. Mélanie Zetlaoui, Nicolas Picard, Avner Bar-Hen (2008). Asymptotic distribution of density-dependent stage-grouped population dynamics models. Acta Biotheoretica, 56(1-2):137-155.
  57. Nicolas Picard, Frédéric Mortier, Pierrette Chagneau (2008). Influence of estimators of the vital rates in the stock recovery rate when using matrix models for tropical rainforests. Ecological Modelling, 214(2-4):349-360.
  58. Nicolas Picard, Yves Yalibanda, Salomon Namkosserena, Fidèle Baya (2008). Estimating the stock recovery rate using matrix models. Forest Ecology and Management, 255(10):3597–3605.
  59. Steen Magnussen, Christopher Kleinn, Nicolas Picard (2008). Two new density estimators for distance sampling. European Journal of Forest Research, 127(3):213-224.

    2007
  60. Pierrette Chagneau, Frédéric Mortier, Nicolas Picard (2007). Propriétés asymptotiques d'un modèle spatialement hiérarchique. In : Actes des 39ièmes Journées de Statistique de la Société Française de Statistique, Angers, 11-15 juin 2007. 6 p.
  61. Nicolas Picard, Avner Bar-Hen (2007). Estimation of the density of a clustered point pattern using a distance method. Environmental and Ecological Statistics, 14(4):341-353.
  62. Mélanie Zetlaoui, Nicolas Picard, Avner Bar-Hen (2007). Robustness of the estimators of transition rates for stage-classified matrix models. Computational Statistics and Data Analysis, 51(10):5090-5102.
  63. Nicolas Picard, Avner Bar-Hen, Sylvie Gourlet-Fleury (2007). Estimator of upgrowth transition parameters for size-classified matrix from small samples. Ecological Modelling, 204(1-2):59-69.

    2006
  64. Malick L. Sylla, Nicolas Picard (2006). Guide méthodologique d'inventaire forestier au Sahel. Collection "Les Guides Techniques du PREDAS". Programme Régional de promotion des Énergies Domestiques et Alternatives au Sahel (PREDAS), CILSS, Ouagadougou, Burkina Faso.
  65. Wassim Jaziri, Laurent Gazull, Nicolas Picard (2006). Optimisation spatiale de la localisation d'un réseau de pistes pour l'accès aux ressources forestières. In: C. Weber, P. Gançarski (Eds.), SAGEO'06, Actes du colloque international de géomatique et d'analyse spatiale, recherches & développements, Strasbourg, 11-13 septembre 2006. Actes sur CD-Rom. 16 p.
  66. Nicolas Picard, Laurent Gazull, Vincent Freycon (2006). Finding optimal route for harvesting tree access. International Journal of Forest Engineering, 17(2):35-49.
  67. Avner Bar-Hen, Nicolas Picard (2006). Simulation study of dissimilarity between point process. Computational Statistics, 21(3-4):487-507.
  68. Nicolas Picard, Saidou Ouattara, Dalla Diarisso, Moussa Ballo, Denis Gautier (2006). Defining units for savanna management in Sudano-sahelian areas. Forest Ecology and Management, 236(2-3):403-411.
  69. Nicolas Picard (2006). Mieux connaître la productivité des savanes. Sciences au Sud, n° 36, p.3.
  70. Nicolas Verzelen, Nicolas Picard, Sylvie Gourlet-Fleury (2006). Approximating spatial interactions in a model of forest dynamics as a means of understanding spatial patterns. Ecological Complexity, 3(3):209-218.
  71. Nicolas Picard, Moussa Ballo, Fadiala Dembélé, Denis Gautier, Maguette Kaïré, Moussa Karembé, Ali Mahamane, Raphaël Manlay, Daouda Ngom, Mama Ntoupka, Saïdou Ouattara, Patrice Savadogo, Louis Sawadogo, Josiane Seghieri, Daniel Tiveau (2006). Évaluation de la productivité et de la biomasse des savanes sèches africaines : l'apport du collectif SAVAFOR. Bois et Forêts des Tropiques, 60(288):75-80.
  72. Olivier Flores, Sylvie Gourlet-Fleury, Nicolas Picard (2006). Local disturbance, forest structure and dispersal effects on saplings distributions of light-demanding and shade-tolerant species in a French Guianian forest. Acta Œcologica, 29(2):141-154.
  73. Mélanie Zetlaoui, Nicolas Picard, Avner Bar-Hen (2006). Asymptotic distribution of stage-grouped population models. Mathematical Biosciences, 200(1):76-89.
  74. Haby Sanou, Nicolas Picard, Peter N. Lovett, Mahamadou Dembélé, Adama Korbo, Dalla Diarisso, Jean-Marc Bouvet (2006). Phenotypic variation of agromorphological traits of the shea tree, Vitellaria paradoxa C.F Gaertn, in Mali. Genetic Resources and Crop Evolution, 53(1):145-161.
  75. Nicolas Picard, Moussa Ballo, Denis Gautier (2006). Mesure des houppiers d'arbres de savane soudanienne par photogrammétrie. Bois et Forêts des Tropiques, 60(287):71-73.
  76. Fadiala Dembélé, Nicolas Picard, Moussa Karembé, Philippe Birnbaum (2006). Tree vegetation patterns along a gradient of human disturbance in the Sahelian area of Mali. Journal of Arid Environments, 64(2):284-297.
  77. Denis Gautier, Didier Bazile, Nicolas Picard (2006). Interactions between Sahelo-soudanian savannas and parklands in space and time: How it affects biomass and biodiversity in regards to stakeholder strategies. In: J. Mistry and A. Berardi (Eds.), Savannas and Dry Forests: Linking People with Nature, Ashgate, London, pp.227-240 (chapitre 9).
  78. Mélanie Zetlaoui, Avner Bar-Hen, Nicolas Picard (2006). Robustesse des estimateurs des taux de transition d'un modèle matriciel structuré en classes d'état. In : Actes des 38ièmes Journées de Statistique de la Société Française de Statistique, Clamart, 29 mai-2 juin 2006. 6 p.
  79. Nicolas Picard, Avner Bar-Hen (2006). Estimation de la densité d'un nuage de points par une méthode par distance ; application aux savanes d'Afrique de l'ouest. In : Actes des 38ièmes Journées de Statistique de la Société Française de Statistique, Clamart, 29 mai-2 juin 2006. 6 p.

    2005
  80. Sylvie Gourlet-Fleury, Lilian Blanc, Nicolas Picard, Plinio Sist, Jan Dick, Robert Nasi, Mike D. Swaine, Eric Forni (2005). Grouping species for predicting mixed tropical forest dynamics: looking for a strategy. Annals of Forest Science, 62(8):785-796.
  81. Nicolas Picard, Katell Guéguen, Haroun Abdoulaye, Dalla Diarisso, Moussa Karembé, Philippe Birnbaum, Robert Nasi (2005). Tree formations in relation with soil and grasses in a dry savanna in Mali, West Africa. African Journal of Ecology, 43(3):201-207.
  82. Sylvie Gourlet-Fleury, Guillaume Cornu, Sébastien Jésel, Hélène Dessard, Jean-Gaël Jourget, Lilian Blanc, Nicolas Picard (2005). Using models for predicting recovery and assessing tree species vulnerability in logged tropical forests: A case study from French Guiana. Forest Ecology and Management, 209(1-2):69-85.
  83. Nicolas Picard, Amadou M. Kouyaté, Hélène Dessard (2005). Tree density estimation using a distance method in Mali savanna. Forest Science, 51(1):7-18.
  84. Wassim Jaziri, Nicolas Picard, Laurent Gazull (2005). Heuristics for building forest roads. In: Walter Leal Filho, Jorge Marx Gomez, Claus Rautenstrauch (Eds.), Second International ICSC Symposium on Information Technologies in Environmental Engineering (ITEE'2005), Shaker Verlag, Herzogenrath, pp.57-69.

    2004
  85. Avner Bar-Hen, Nicolas Picard (2004). Inference of the interactions between two tree species from their spatial distribution. Revista Brasileira de Estatistica, 65(223):61-81.
  86. Sylvie Gourlet-Fleury, Guillaume Cornu, Hélène Dessard, Nicolas Picard, Plinio Sist (2004). Modelling forest dynamics for practical management purposes. Bois et Forêts de Tropiques, 58(280):41-52.
  87. Nicolas Picard, Yves Nouvellet, Malick Ladji Sylla (2004). Relationship between plot size and the variance of the density estimator in West African savannas. Canadian Journal of Forest Research, 34(10):2018-2026.
  88. Nicolas Picard, Alain Franc (2004). Approximating spatial interactions in a model of forest dynamics. Forest Biometry, Modelling and Information Sciences, 1:91-103.
  89. Nicolas Picard, Moussa Karembé, Philippe Birnbaum (2004). Species-area curve and spatial pattern. Écoscience, 11(1), 45-54.
  90. Bokary Allaye Kelly, Jean-Marc Bouvet, Nicolas Picard (2004). Size class distribution and spatial pattern of Vitellaria paradoxa in relation to farmers' practices in Mali. Agroforestry systems, 60(1):3-11.
  91. Hélène Dessard, Nicolas Picard, Raphaël Pélissier, Frédérique Collinet-Vautier (2004). Spatial patterns of the most abundant tree species. In: S. Gourlet Fleury, J.-M. Guehl and O. Laroussinie (Eds.), Ecology and Management of a Neotropical Rainforest. Lessons drawn from Paracou, a long-term experimental research site in French Guiana, Elsevier, Paris, Part IV, Chapter 1, pp.177-190.
  92. Sylvie Gourlet-Fleury, Nicolas Picard (2004). Growth behaviour of trees and relationship with some descriptors of the environment. In: S. Gourlet Fleury, J.-M. Guehl and O. Laroussinie (Eds.), Ecology and Management of a Neotropical Rainforest. Lessons drawn from Paracou, a long-term experimental research site in French Guiana, Elsevier, Paris, Part IV, Chapter 4, pp.229-253.
  93. Nicolas Picard, Sylvie Gourlet-Fleury, Vincent Favrichon (2004). Modelling the forest dynamics at Paracou: the contributions of five models. In: S. Gourlet Fleury, J.-M. Guehl and O. Laroussinie (Eds.), Ecology and Management of a Neotropical Rainforest. Lessons drawn from Paracou, a long-term experimental research site in French Guiana, Elsevier, Paris, Part IV, Chapter 6, pp.281-296.

    2003
  94. Plinio Sist, Nicolas Picard, Sylvie Gourlet-Fleury (2003). Sustainable cutting cycle and yields in a lowland mixed dipterocarp forest of Borneo. Annals of Forest Science, 60(8):803-814.
  95. Nicolas Picard, Avner Bar-Hen, Yann Guédon (2003). Modelling forest dynamics with a second-order matrix model. Forest Ecology and Management, 180(1-3):389-400.
  96. Nicolas Picard, Alain Franc (2003). Are ecological groups of species optimal for forest dynamics modelling? Ecological Modelling, 163(3):175-186.
  97. Nicolas Picard, Sylvie Gourlet-Fleury, Plinio Sist (2003). Using process-dependent groups of species to model the dynamics of a tropical rain-forest. In: A. Amaro, D. Reed and P. Soares (Eds.), Modelling Forest Systems, Proceedings of the IUFRO 4.01 and 4.11 Conference, Instituto Superior de Gestão and Instituto Superior de Agronomia, Sesimbra, Portugal, 2-5 June 2002, CAB International Publishing, Wallingford, Chapter 21, p.237-248.

    2002
  98. Nicolas Picard, Avner Bar-Hen, Alain Franc (2002). Modeling forest dynamics with a combined matrix/individual-based model. Forest science, 48(4):643-652.
  99. Nicolas Picard, Avner Bar-Hen (2002). La corrélation spatiale entre la surface terrière des arbres et leur accroissement est-elle un bon indicateur de la compétition ? Annals of Forest Science, 59(1):41-51.
  100. Gaëlle Lahoreau, Nicolas Picard, Sylvie Gourlet-Fleury (2002). Grouping species to model forest dynamics: a case study of a forest in the Central African Republic. Bois et Forêts des Tropiques, 56(271):89-100.
  101. Sylvie Gourlet-Fleury, Guillaume Cornu, Hélène Dessard, Nicolas Picard, Plinio Sist (2002). Forest dynamics models in French Guiana to answer practical forest management issues. In: C. Sabogal and J.N.M. Silva (Eds.), Manejo Integrado de Florestas Umidas Neotropicais por Industrias e Comunidades. Aplicando resultados de pesquisa, envolvendo atores e definindo politicas publicas, Proceedings of the Simposio Internacional da IUFRO, Bélem 2000 (Integrated Management of Neotropical Rain Forests by Industries and Communities: Applying Research Results, Involving Stakeholders and Defining Policy, IUFRO International Symposium, Belém, Pará, Brazil, December 4-7, 2000), CIFOR and Embrapa Amazonia Oriental, Belém, Brazil, p.101-113.
  102. Plinio Sist, Jean-Guy Bertault, Nicolas Picard (2002). Why minimum diameter cutting alone cannot fit with RIL objectives. In: T. Enters, P.B. Durst, G.B. Applegate, P.C.S. Kho and G. Man (Eds.), Applying Reduced Impact Logging to Advance Sustainable Forest Management, international conference proceedings, 26 February to 1 March 2001, Kuching, Malaysia, FAO, Regional Office for Asia and the Pacific, Bangkok, Thailand, RAP Publication n°2002/14, p.65-74.

    2001
  103. Anne Ferment, Nicolas Picard, Sylvie Gourlet-Fleury, Christopher Baraloto (2001). A comparison of five indirect methods for characterizing the light environment in a tropical forest. Annals of Forest Science, 58(8):877-891.
  104. Nicolas Picard, Alain Franc (2001). Aggregation of an individual-based space-dependent model of forest dynamics into distribution-based and space-independent models. Ecological Modelling, 145(1):69-84.
  105. Nicolas Picard, Avner Bar-Hen, Alain Franc (2001). Spatial pattern induced by asymmetric competition: a modelling approach. Natural Resource Modeling, 14(1):147-175.

    2000
  106. Nicolas Picard (2000). Dynamique forestière tropicale. Passage d'un modèle individuel à un modèle de distribution. Bois et Forêts des Tropiques, 54(265):73-75.
  107. Nicolas Picard, Avner Bar-Hen (2000). Estimation of the envelope of a point set with loose boundaries. Applied Mathematics Letters, 13(7):13-18.
  108. Alain Franc, Sylvie Gourlet-Fleury, Nicolas Picard (2000). Une introduction à la modélisation des forêts hétérogènes. ENGREF, Nancy. 312 p. 

    1999
  109. Alain Franc, Nicolas Picard (1999). Aggregation and disaggregation between individual-based and distribution-based models: a case study on Paracou experimental plots, French Guiana. In: C. Kleinn and M. Köhl (Eds.). Long-Term Observations and Research in Forestry, Proceedings of the IUFRO S4.11 International Symposium, CATIE, Turrialba, Costa Rica, February 23-27, 1999, CATIE, Turrialba, Costa Rica, p.159-175.

Unpublished documents 

 

  1. Nicolas Picard, Matieu Henry (2013). Atelier scientifique régional sur les équations allométriques en Afrique Centrale, 2-5 avril 2013 Yaoundé, Cameroun : compte-rendu. Projet de renforcement des capacités institutionnelles en matière de REDD+ pour la gestion durable des forêts du Bassin du Congo, COMIFAC, Yaoundé, Cameroun, 90 p.
  2. Nicolas Picard, Sylvie Gourlet-Fleury (2012). Optimisation à l'échelle nationale des dispositifs de placettes permanentes. Projet d'aménagement des petits permis forestiers gabonais (PAPPFG), rapport technique, Libreville, Gabon, 53 p.
  3. Nicolas Picard, Sylvie Gourlet-Fleury (2011). Optimisation des hypothèses et paramètres d'aménagement. Projet d'aménagement des petits permis forestiers gabonais (PAPPFG), rapport technique de mission, avril-juin 2011, n°RT 1106 NP&SGF. CIRAD, Libreville, Gabon, 247 p.
  4. Nicolas Picard (2008). Analyse des données de préinventaire de Yoko. Projet de relance de la recherche agronomique et forestière en RDC (Re2AFor), rapport technique, Libreville, Gabon, 436 p.
  5. L. Saint-André, O. Roupsard, C. Marsden, A. Thongo M'Bou, R. D'Annunzio, A. De Grandcourt, C. Jourdan, D. Derrien, N. Picard, B. Zeller, J.-M. Harmand, J. Levillain, M. Henry, Y. Nouvellon, P. Deleporte, J.-P. Bouillet, and J.-P. Laclau (2007). Literature review on current methodologies to assess C balance in CDM Afforestation/reforestation projects and a few relevant alternatives for assessing water and nutrient balance, as a complement to carbon sequestration assessments. CarboAfrica project, Work Package N°6, Deliverable D15. CIRAD, Montpellier, France, 105 p.
  6. Nicolas Picard (2007). Modélisation de la dynamique de forêts naturelles tropicales : quel niveau de description ? Mémoire d'habilitation à diriger des recherches, université Montpellier 2. 99 p.
  7. Nicolas Picard (2007). Dispositifs permanents pour le suivi des forêts en Afrique Centrale : un état des lieux. Convention n° 3132-2007 SCAC de Yaoundé / COMIFAC / CIRAD pour la définition d'un "Protocole unifié pour la mise en place de parcelles permanentes de suivi de la végétation dans le bassin du Congo", rapport préliminaire de synthèse. 38 p.
  8. Nicolas Picard (2006). Méthode d'inventaire forestier. Projet de développement rural participatif dans le moyen Atlas central (projet Khénifra). 43 p.
  9. Malick L. Sylla, Nicolas Picard (2005). Guide méthodologique des évaluations rapides de bois énergie. Programme Régional de promotion des Énergies Domestiques et Alternatives au Sahel (PREDAS), CILSS, Ouagadougou, Burkina Faso, 90 p.
  10. Dalla Diarisso, Harouna Yossi, Malick Sylla, Moussa Ballo, Moussa Karembé, Nicolas Picard, Philippe Birnbaum, Saïdou Ouattara (2005) Projet RFO6, rapport d'état d'avancement, novembre 2005. 164 p.
  11. Nicolas Picard (2004) Analyse de données environnementales : méthodes de base en statistiques. Working paper DMP-CIRAD-04/2, Cirad, Bamako, Mali. 276 p.
  12. Nicolas Picard (1999). Passage d'un modèle individuel à un modèle de distribution de la dynamique forestière tropicale - application à une forêt dense tropicale humide de Guyane française. Thèse de doctorat, ENGREF. 457 p. (2 volumes).
  13. Nicolas Picard (1996). Inventaires forestiers en Indonésie. Rapport de stage à l'étranger, ENGREF, Paris, 23 p. 
  14. Nicolas Picard (1996). Répartition spatiale des essences forestières : étude de distance entre espèces basées sur des dissimilarités entre nuages de points. Mémoire de DEA, Université Paris 6, Paris, 81 p.
  15. Antoine Findeling, Nicolas Picard (1995). Analyse statistique des données du recensement national agricole de 1994 au Burkina Faso. Ministère de l'Agriculture et des Ressources Animales, Direction des Statistiques Agro-Pastorales, Ouagadougou, Burkina Faso et CIRAD, Montpellier, 170 p.
  16. Nicolas Picard (1994). Study of the interfaces in hydrogenated amorphous silicon TFT and MNSS structures. IBM research division, Thomas J. Watson research center, Eastview laboratory, New York, USA, 61 p.

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