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Author |
Amusant, N.; Anouhé, J. B. S.; Amissa, A.; Beauchène, Jacques; Niamké, E.; Nicolinni, E. |
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Title  |
Tree crown architecture: a tool for decay resistance evaluation |
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Conference Article |
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2013 |
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IRG/WP |
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13 |
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10793 |
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Keywords |
decay resistance, architecture, heartwood, wood extractives, crown |
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The variability of natural durability contributes to the bad perception of some wood end-users. In our search, we need to adjust our methods and strategies to estimate natural durability and extract higher value from wood resources. Architectural analysis is essentially a detailed, multilevel, comprehensive and dynamic approach to plant development. Numerous biological process which impact some wood properties like durability are linked with tree development. A better understanding of the interelationship between tree physiology through tree achitecture analysis and natural durability could be an approach to predict this property. This study explore the relation between the crown architecture, decay resistance and wood extractives in Dicorynia guianensis in order to propose tree crown architecture as an evalution decay resistance tool. |
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Queenstown, New Zealand |
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16-20 June 2013 |
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EcoFoG @ carole.legrand @ |
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214 |
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Author |
Fournier, M.; Stockes, A.; Coutand, C.; Fourcaud, T.; Moulia, B. |
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Title |
Tree biomechanics and growth strategies in the context of forest functional ecology (Chap.1) |
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Book Chapter |
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2006 |
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Ecology and biomechanics : a mechanical approach to the ecology of animals and plants |
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1-33 |
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Introduction , 2 Sorne Biornechanical Characteristics of Trees , 3 1-.2.1 Wood as a Lightweight, Cellular- and Fiher- Reinforced Materia!..... 3 1.2.2 Wood Variability 5 1.2.3 Mechanics of Secondary Growth , , , 6 Biomechanical and Ecological Significance of Height. , , 6 1.3.1 Biomechanical Environmental Constraints on Tree Height and Their Ecological Significance, “. . 7 l.3.1.1 Safety Factor . 7 1.3.1.2 Analysis of Successive Shapes Occurring during Growth Due to the Continuous Increase of Supported Loads ....” ..“ 8 1.3.2 Biomechanical Functional Traits Defined from Risk Assessment.. 9 1.3.2.1 Buckling or Breakage·of Stems 9 1.3.2.2 Root Anchorage 9 1.3.3 Biomechanical Functional Traits and Processes lnvolved in Height Gro\vth Strategy .” “ .., , 13 The Growth Processes That Control the Mechanical Stability of Siender Tree StelTIS,., , ,......... . , , ,.. , ,.. ' , 14 1.4, l The Mechanical Control of Growth , , , ,.. , , , 14 1.4.2 The Control of Stem Orientation ta Maintain or Restore the Tree Form, and Allow Vertical Growth ” “ ” “ ..”'“.”,,, ..,.16 1.4,3 The Control of Root Growth to Secure Anchorage .... 21 A Practical Application of Tree Biomechanics in Ecology 21 Conclusion , 24 Références 25 |
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Taylor & Francis |
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Boca Raton (USA) |
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Herrel, A.; Speck, T.; Rowe, N.P. |
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EcoFoG @ webmaster @ 25 |
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66 |
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Barabé, D.; Gibernau, M. |
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Title |
Thermogenic patterns in Philodendron ornatum and P. grandifolium : a comparative analysis |
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2010 |
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Aroideana |
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33 |
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192-200 |
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EcoFoG @ webmaster @ |
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116 |
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McLean, J.P.; Arnould, O.; Beauchêne, J.; Clair, B. |
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Title |
The viscoelastic properties of some Guianese woods |
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Conference Article |
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Year |
2009 |
Publication |
Proceedings of the Sixth Plant Biomechanics Conference |
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510-516 |
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UMR EcoFoG |
Place of Publication |
Cayenne, French Guyana |
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Thibaut, B. |
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November 16 - 21, 2009 |
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EcoFoG @ webmaster @ 31 |
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98 |
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Richard-Hansen, Cécile ; Ackermann, Luc ; Berzins, Rachel ; Devillechabrolle, Jennifer ; Foch, Thibaut ; Goguillon, Bertrand ; Korysko, François ; Rinaldo, Raphaëlle |
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Title |
The return of white lipped peccaries in two main protected areas of French Guiana: update and insights into an uncommon population dynamics |
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2018 |
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Suiform Soundings |
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17 |
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1 |
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37-40 |
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EcoFoG @ carole.legrand @ |
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315 |
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Author |
Brémaud, I.; Amusant, N.; Gril, J.; Thibaut, B. |
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Title |
The effects of sequential removal of extractives on the vibrational properties of two tropical woods with interlocked grain |
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2006 |
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International conference on integrated approach to wood structure, behaviour and application, joint meeting of ESWM and COST Action E35 |
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18-22 |
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Florence, Italy |
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Fioravanti, N.; Macchioni, M. |
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15-17.5.06 |
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EcoFoG @ webmaster @ |
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135 |
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Author |
Jounieaux, Marianne |
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Title |
The effect of light micro environment on growth and survival for saplings in French Guiana tropical rain forest: utilisation of LiDAR data to conceptualise light indexes |
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2016 |
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40 |
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Analyses de survie ; modèle linéaire mixte ; modèle semi-paramétrique de Cox ; disponibilité en lumière ; compétition symétrique ; dynamique forestière |
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Les forêts tropicales humides sont les plus diversifiés et les plus complexes écosystèmes connus, elles sont des sources essentielles de nourriture, de bois et de substances médicinales, et elles jouent un rôle majeur dans la régulation climatique. Pourtant, ces écosystèmes sont menacés et une augmentation des connaissances sur leurs processus dynamiques est nécessaire afin de les préserver efficacement. La présente étude a pour objectif d’utiliser la technologie LiDAR afin d’établir un indice de lumière suffisamment précis pour caractériser le micro-environnement lumineux des arbres juvéniles en forêt tropicale humide, et d’évaluer l’effet de facteurs environnementaux sur la croissance et la survie des juvéniles de 25 espèces d’arbres tropicaux. Deux types d’indice de lumière ont été définis : l’un basé sur l’influence de la taille et la distance de la trouée de canopée la plus proche, l’autre basé sur la transmittance moyenne à différentes hauteurs. Deux modèles linéaires mixtes ont été paramétrés pour décrire la croissance en diamètre et la croissance en hauteur. Un modèle semi-paramétrique de Cox a été paramétré pour décrire la survie des juvéniles en fonction de l’accroissement en diamètre et en hauteur, des facteurs environnementaux et de l’espèce en tant que variable de stratification. Pour tous ces modèles, une comparaison sur la base du Critère d’information d’Akaïke a été réalisée avec des modèles similaires sans les co-variables de lumière, afin d’évaluer la part d’information apportée par ces indices. Un modèle semi-paramétrique de Cox a été paramétré pour 8 des 25 espèces étudiées afin d’évaluer la variabilité des processus de survie entre les espèces. Les résultats appuient l’hypothèse que la lumière, aussi bien que l’évolution dans le temps de l’environnement lumineux, ont une influence conséquente sur les processus de croissance et de survie des juvéniles en forêt tropicale humide. Il apparait également dans nos résultats que plusieurs processus de croissance sont similaires entre les juvéniles et les arbres ayant un DBH ≥ 10cm, comme le trade-off entre la croissance en diamètre et la croissance en hauteur, ou le tempérament général par rapport à la lumière. Concernant les processus de survie, nos résultats révèlent la grande variabilité interspécifique, chaque espèce réagissant à un ensemble différent de facteurs intrinsèques et environnementaux. Les processus généraux de survie pour les juvéniles en forêts tropicales humides semblent quant à eux être principalement impactés par la solidité du tronc et par sa probabilité de casser, et par la compétition symétrique entre les juvéniles. L’influence du changement de l’environnement lumineux apparait bénéfique à la survie des juvéniles, bien que l’impact de la disponibilité en lumière reste ici obscure |
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Master's thesis |
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Université Montpellier II |
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Montpellier - France |
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EcoFoG @ carole.legrand @ |
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289 |
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Author |
Houël, Emeline ; Stien, D. ; Bertani, Stéphane ; Bourdy, Geneviève ; Deharo, Eric ; Julian, Valérie ; Valentin, Alexis |
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Title |
Thérapie par la flore amazonienne : remède antipaludique (Quassia amara) |
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2011 |
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De la recherche en Guyane – La science par exemple |
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81-82 |
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Ibis Rouge Editions |
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Cayenne - Guyane française |
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PNR Guyane |
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EcoFoG @ carole.legrand @ |
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154 |
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Author |
Hamila, N.; Aimène, Y.; Gatouillat, S.; Bel, S; Vidal-Sallé, E; Boisse P. |
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Title |
Textile composite reinforcement forming simulation : Continuous, discrete and semi discrete approaches |
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2010 |
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Texcomp10, Proceedings of the 10th international conference on textile composites |
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Lille |
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25-29 October 2010 |
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EcoFoG @ webmaster @ |
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128 |
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Author |
Roisin, Y; Corbara, B; Delsinne, T; Orivel, J; Leponce, M. |
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Title |
Termites in Santo: lessons from a Survey in the Penaoru area |
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2011 |
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The natural history of Santo |
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128-130 |
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Publications Scientifiques du Museum, IRD éditions, Pro-Natura International |
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Bouchet, P.; Le Guyader, H.; Pascal, O |
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EcoFoG @ webmaster @ |
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160 |
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