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Author (up) Almeras, T.; Thibaut, A.; Gril, J. openurl 
  Title Effect of circumferential heterogeneity of wood maturation strain, modulus of elasticity and radial growth on the regulation of stem orientation in trees Type Journal Article
  Year 2005 Publication Trees-Structure and Function Abbreviated Journal Trees-Struct. Funct.  
  Volume 19 Issue 4 Pages 457-467  
  Keywords biomechanics; reaction wood; maturation strain; Young's modulus; eccentricity  
  Abstract Active mechanisms of re-orientation are necessary to maintain the verticality of tree stems. They are achieved through the production of reaction wood, associated with circumferential variations of three factors related to cambial activity: maturation strain, longitudinal modulus of elasticity (MOE) and eccentric growth. These factors were measured on 17 mature trees from different botanical families and geographical locations. Various patterns of circumferential variation of these factors were identified. A biomechanical analysis based on beam theory was performed to quantify the individual impact of each factor. The main factor of re-orientation is the circumferential variation of maturation strains. However, this factor alone explains only 57% of the re-orientations. Other factors also have an effect through their interaction with maturation strains. Eccentric growth is generally associated with heterogeneity of maturation strains, and has an important complementary role, by increasing the width of wood with high maturation strain. Without this factor, the efficiency of re-orientations would be reduced by 31% for angiosperms and 26% for gymnosperms. In the case of angiosperms, MOE is often larger in tension wood than in normal wood. Without these variations, the efficiency of re-orientations would be reduced by 13%. In the case of gymnosperm trees, MOE of compression wood is lower than that of normal wood, so that re-orientation efficiency would be increased by 24% without this factor of variations.  
  Address Nagoya Univ, Lab Biomat Phys, Dept Bioagr Sci, Nagoya, Aichi 4648601, Japan, Email: t_almeras@hotmail.com  
  Corporate Author Thesis  
  Publisher SPRINGER Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0931-1890 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000229890700012 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 253  
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Author (up) Almeras, T.; Yoshida, M.; Okuyama, T. openurl 
  Title The generation of longitudinal maturation stress in wood is not dependent on diurnal changes in diameter of trunk Type Journal Article
  Year 2006 Publication Journal of Wood Science Abbreviated Journal J. Wood Sci.  
  Volume 52 Issue 5 Pages 452-455  
  Keywords maturation stress; growth stress; cell-wall maturation; continuous lighting; diurnal strains  
  Abstract A hypothetical mechanism for the generation of maturation stress in wood was tested experimentally. The hypothesis was that the maturation stress could partly originate in a physical mechanism related to daily changes in water pressure and associated diurnal strains. The matrix of lignin and hemicellulose, deposited in the cell wall during the night, would be put in compression by the effect of water tension during the next day. The cellulose framework, crystallizing during the day, would be put in tension by the decrease in tension at night and subsequent cell-wall swelling. This was tested on young saplings of sugi and beech. Half of the saplings were submitted to continuous lighting, which canceled diurnal strains. Saplings were tilted 40 degrees, and their uprighting movement was measured. The uprighting movement is directly due to the production of reaction wood and the concomitant development of large longitudinal maturation stress. It occurred in the continuously lighted plants at least as much as in control plants. We conclude that the generation of longitudinal maturation stress in tension or compression wood is not directly related to variations in water pressure and diurnal strains.  
  Address Nagoya Univ, Grad Sch Bioagr Sci, Lab Biomat Phys, Chikusa Ku, Nagoya, Aichi 4648601, Japan, Email: t_almeras@hotmail.com  
  Corporate Author Thesis  
  Publisher SPRINGER TOKYO Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1435-0211 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000241010600012 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 222  
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Author (up) Almeras, T.; Yoshida, M.; Okuyama, T. openurl 
  Title Strains inside xylem and inner bark of a stem submitted to a change in hydrostatic pressure Type Journal Article
  Year 2006 Publication Trees-Structure and Function Abbreviated Journal Trees-Struct. Funct.  
  Volume 20 Issue 4 Pages 460-467  
  Keywords diurnal strains; hydrostatic pressure; xylem; inner bark; mechanical properties  
  Abstract Tangential strains were measured with strain gauges at the surface of xylem and inner bark of saplings of Cryptomeria japonica D. Don. and Fagus silvatica L. during a pressurization test. The test consists in submitting the whole sapling to an artificially imposed hydrostatic pressure of increasing magnitude. The elastic response of the stems was found linear both at the surface of xylem and inner bark. A simple geometric model allows to compute radial strains in each tissue from tangential strain data. Inside inner bark, radial strains are much larger than tangential strains, because tangential strains are restrained by the core of wood. The material compliance of each tissue was computed as the ratio between the radial strain and the pressure that caused it. The material compliance of xylem is much lower than that of inner bark, but, as its thickness is much larger, its contribution to the apparent behavior of the stem is not negligible. Computation of material compliances by this pressurization test provides information about the specific behavior of each tissue in response to hydrostatic pressure. This can be used to estimate and interpret the calibration factor linking the water status of the plant to the apparent strain measured at its surface.  
  Address Nagoya Univ, Grad Sch Bioagr Sci, Lab Biomat Phys, Chikusa Ku, Nagoya, Aichi 4648601, Japan, Email: t_almeras@hotmail.com  
  Corporate Author Thesis  
  Publisher SPRINGER Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0931-1890 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000237858100007 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 225  
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Author (up) Amani, Bienvenu H.K. ; N'Guessan, Anny E. ; Derroire, Géraldine ; N'dja, Justin K. ; Elogne, Aka G. M. ; Traoré, Karidia ; Zo-Bi, Irie C. ; Hérault, Bruno doi  openurl
  Title The potential of secondary forests to restore biodiversity of the lost forests in semi-deciduous West Africa Type Journal Article
  Year 2021 Publication Biological Conservation Abbreviated Journal  
  Volume 259 Issue Pages  
  Keywords  
  Abstract In West Africa, more than 80% of the original forest cover has disappeared due to the exponential growth of human populations in a recurrent search for new agricultural land. Once the fertility of the land is exhausted, these areas are abandoned and left to be reforested through natural succession. Despite the widespread presence of secondary forests of various ages in West African landscapes, little is known about the trajectories of recovery and the environmental factors that influence recovery rates. We set up 96 0.2 ha forest plots, along a chronosequence of 1 to 40 years and including 7 controls, on which all trees larger than 2.5 cm in diameter at breast height were inventoried. We modelled the recovery trajectories of four complementary dimensions of biodiversity (richness, diversity, composition, indicators of old-growth forest) in a Bayesian framework. Our results show that the four dimensions of biodiversity recover at different rates, with composition recovering much faster than floristic diversity. Among the local, landscape, and historical factors studied, the number of remnants and proximity to old-growth forests have a positive impact on recovery rates, with, under good environmental conditions, the composition, richness, and diversity being almost completely recovered in less than 25 years. Our results demonstrate the very high resilience of the composition of the semi-deciduous forests of West Africa, but also suggest that the management of these post-forest areas must be differentiated according to the landscape context and the presence of isolated trees, which are the last vestiges of the former forest. In unfavourable conditions, natural dynamics should be assisted by agroforestry practices and local tree planting to allow for a rapid restoration of forest goods and services to local populations.  
  Address  
  Corporate Author Thesis  
  Publisher Elsevier B.V. Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Serial 1010  
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Author (up) Amusant, N.; Beauchene, J.; Digeon, A.; Chaix, G. url  doi
openurl 
  Title Essential oil yield in rosewood (Aniba rosaeodora Ducke): Initial application of rapid prediction by near infrared spectroscopy based on wood spectra Type Journal Article
  Year 2016 Publication Journal of Near Infrared Spectroscopy Abbreviated Journal Journal of Near Infrared Spectroscopy  
  Volume 24 Issue 6 Pages 507-515  
  Keywords Aniba rosaeodora; Calibration; Essential oil yield; Nir; Pls; Rosewood  
  Abstract Rosewood (Aniba rosaeodora) essential oil is a valuable ingredient that has long been used in the perfume and cosmetic industries. The main rosewood timber quality parameters are its essential oil yield and quality. A hydrodistillation method has been developed for yield determination, but it is time consuming. Here we tested the applicability of near infrared (NIR) spectroscopy for determining essential oil yield directly from wood powder. Essential oil from 139 wood powders was extracted via hydrodistillation. The measurements were based on the ratio between the extracted essential oil mass and the oven-dried wood mass and were correlated with the wood powder NIR spectra. The calibration model statistical findings demonstrated that NIR could be a fast and feasible alternative method for selecting trees with a high essential oil yield potential. NIR-based predictions obtained in an independent validation set indicated a high correlation (r2e = 0.92) with laboratory essential oil yield measurements. This NIR model could help wood managers in selecting trees with a high essential oil yield potential and in developing sustainable rosewood management strategies. © IM Publications LLP 2016. All rights reserved.  
  Address ESALQ-USP, Piracicaba, Brazil  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Cited By :1; Export Date: 17 January 2017 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 707  
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Author (up) Amusant, N.; Beauchene, J.; Fournier, M.; Janin, G.; Thevenon, M.F. openurl 
  Title Decay resistance in Dicorynia guianensis Amsh.: analysis of inter-tree and intra-tree variability and relations with wood colour Type Journal Article
  Year 2004 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume 61 Issue 4 Pages 373-380  
  Keywords Dicorynia guianensis; Amazonian wood; wood colour/decay resistance; heartwood; variability  
  Abstract Dicorynia guianensis Amsh. is very widespread in the forests of French Guiana and moreover is the leading species harvested in this area, but its main defect remains the great variability of wood durability, especially with respect to fungal decay. The aim of this work was to study this inter- and intra-tree variability in order to identify the parameters responsible for this variation (growth area, height and radial position) within the tree. The resistance decrease from the outer heartwood to the pith. Measurement of colour variation using the CIELAB (L*, a*, b*, C*, h*) system was performed at the intra-tree level to highlight the longitudinal and radial gradients of variation. Dicorynia guianensis becomes less red and dark from the outer to the inner heartwood and from the base to the top. Lastly, variations of colour and durability were correlated: the wood is less resistant the redder and darker it is.  
  Address CIRAD Foret, Forest Prod Programme, F-34398 Montpellier 5, France, Email: nadine.amusant@cirad.fr  
  Corporate Author Thesis  
  Publisher E D P SCIENCES Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1286-4560 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000223955500009 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 262  
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Author (up) Amusant, N.; Digeon, A.; Descroix, L.; Bruneau, O.; Bezard, V.; Beauchene, J. url  openurl
  Title Planting rosewood for sustainable essential oil production: Influence of surrounding forest and seed provenance on tree growth and essential oil yields Type Journal Article
  Year 2015 Publication Bois et Forets des Tropiques Abbreviated Journal Bois et Forets des Tropiques  
  Volume 326 Issue 4 Pages 57-65  
  Keywords Aniba rosaeodora Ducke; Dendrometric traits; Essential oil yield; French Guiana; Light effect; Plantation; Rosewood; Seed provenance  
  Abstract Essential oil from the Amazonian rosewood tree (Aniba rosaeodora Ducke) is valued as an important aromatic ingredient in luxury perfumes. Due to over-harvesting in recent decades, rosewood is now listed as an endangered species. Rosewood tree planting is now considered a viable alternative to logging as it can support both reforestation and sustainable agriculture thanks to sales of the essential oil extracted. We planted 605 rosewood trees in French Guiana from two seeds of local provenance, in a 5 445 m2 plot surrounded by primary forest. Nine years after planting, we assessed the effect of the position of the tree relative to the surrounding forest and of the seed provenance on dendrometric traits (height, circumference, above ground woody biomass) and hence on the yield of essential oil. Measurements were made on 99 trees. Average growth rates for the young trees were 0.7 m/year in height, 2.5 cm/year in stem circumference and 990.5 kg dry mass/ha/year in aboveground biomass, while essential oil yields ranged from 0.6% to 3.6% with a mean of 2.1%. The position of the tree relative to the surrounding forest was the main factor affecting tree growth and essential oil production: trees located close to the surrounding forest were significantly smaller and accumulated less essential oil due to the reduced availability of light. Seed provenance had less effect on dendrometric traits and essential oil yields. In conclusion, although planting practices will need to be adapted to avoid the edge effects of proximity to the forest, short-rotation cultivation of rosewood trees could be the optimum and most economically attractive system for the production of essential oil.  
  Address Office National des Forêts (ONF), Département R and D, Pôle de Cayenne, Réserve de Montabo, BP 87002, Cayenne Cedex, French Guiana  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 7 March 2016 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 670  
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Author (up) Amusant, N.; Fournier, M.; Beauchene, J. openurl 
  Title Colour and decay resistance and its relationships in Eperua grandiflora Type Journal Article
  Year 2008 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume 65 Issue 8 Pages 806  
  Keywords natural durability; colour; decay resistance; variability; heartwood; tropical wood  
  Abstract Eperua grandiflora, which is widely distributed in the French Guiana forest region, shows high variability in decay resistance. Further information concerning this wood quality parameter is necessary, but standard testing methods are complex and time-consuming. We assessed the use of colorimetry to determine durability in heartwood samples from a range of trees. Eperua grandiflora colour parameters were measured using a CIELAB system, revealing that the tree effect was greater than the radial position and height effects. The wood samples were exposed to Coriolus versicolor and Antrodia sp. according to two European standards (En 350-1 and XP CEN TS 15083-1). Eperua grandiflora is more susceptible to brown rot. These two standards did not give the same durability classes. The high variation in natural durability was due to the tree effect. These two properties were found to be correlated and the assessment also distinguished the extreme durability classes but they are not sufficient to classify the class of durability of this species.  
  Address [Amusant, Nadine] CIRAD, PERSYT, UR Valorisat Bois Tropicaux, F-34538 Montpellier 5, France, Email: nadine.amusant@cirad.fr  
  Corporate Author Thesis  
  Publisher EDP SCIENCES S A Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1286-4560 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000261431600006 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 127  
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Author (up) Amusant, N.; Nigg, M.; Thibaut, B.; Beauchene, J. url  openurl
  Title Diversity of decay resistance strategies of durable tropical woods species: Bocoa prouacencsis Aublet, Vouacapoua americana Aublet, Inga alba (Sw.) Wild Type Journal Article
  Year 2014 Publication International Biodeterioration & Biodegradation Abbreviated Journal Int. Biodeterior. Biodegrad.  
  Volume 94 Issue Pages 103-108  
  Keywords Decay resistance; Density; Heartwood; Sapwood; Tropical wood; Wood extractive; Decay resistance; Heartwood; Sapwood; Tropical wood; Wood extractives; Density (specific gravity); Andira aubletii; Bocoa; Inga  
  Abstract The study of decay resistance in wood is of interest for wood end-users but also for the global carbon balance since wood biodegradation is a key driver of forest ecosystem functioning through its impacts on carbon and nutrient cycling. We studied the density and wood extractive contents in order to understand decay resistance against soil microflora after 90 days exposure of sapwood and heartwood from three Neotropical wood species known for their decay resistance: Bocoa prouacensis, Vouacapoua americana, Inga alba. Decay resistance was correlated with density more than wood extractive content. The results highlighted different decay resistance strategies. In B. prouacensis, both sapwood and heartwood were highly resistant due to the high density and high content of antifungal wood extractives. In V. americana heartwood, decay resistance was due to the high synergistic-acting wood extractive content. Conversely, with the least dense wood species I. alba, we found that decay resistance was due to the antifungal wood extractives synthesized early in the sapwood. In conclusion, we showed that the three wood species with the same level of heartwood decay resistance performance had different decay resistance strategies according to the anatomic and defensive wood traits.  
  Address CNRS, CCo Pl E. Bataillon, Laboratoire de Me´canique et Ge´nie Civile, Universite´ de Montpellier 2Montpellier Cedex 5, France  
  Corporate Author Thesis  
  Publisher Elsevier Ltd Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 09648305 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 1 October 2014; Coden: Ibbie; Correspondence Address: Amusant, N.; CIRAD UMR Ecologie des foreˆts de GuyaneFrance Approved no  
  Call Number EcoFoG @ webmaster @ Serial 561  
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Author (up) Andris, M.; Aradottir, G.I.; Arnau, G.; Audzijonyte, A.; Bess, E.C.; Bonadonna, F.; Bourdel, G.; Bried, J.; Bugbee, G.J.; Burger, P.A.; Chair, H.; Charruau, P.C.; Ciampi, A.Y.; Costet, L.; Debarro, P.J.; Delatte, H.; Dubois, M.P.; Eldridge, M.D.B.; England, P.R.; Enkhbileg, D.; Fartek, B.; Gardner, M.G.; Gray, K.A.; Gunasekera, R.M.; Hanley, S.J.; Havil, N.; Hereward, J.P.; Hirase, S.; Hong, Y.; Jarne, P.; Qi, J.F.; Johnson, R.N.; Kanno, M.; Kijima, A.; Kim, H.C.; Kim, K.S.; Kim, W.J.; Larue, E.; Lee, J.W.; Lee, J.H.; Li, C.H.; Liao, M.H.; Lo, N.; Lowe, A.J.; Malausa, T.; Male, P.J.G.; Marko, M.D.; Martin, J.F.; Messing, R.; Miller, K.J.; Min, B.W.; Myeong, J.I.; Nibouche, S.; Noack, A.E.; Noh, J.K.; Orivel, J.; Park, C.J.; Petro, D.; Prapayotin-Riveros, K.; Quilichini, A.; Reynaud, B.; Riginos, C.; Risterucci, A.M.; Rose, H.A.; Sampaio, I.; Silbermayr, K.; Silva, M.B.; Tero, N.; Thum, R.A.; Vinson, C.C.; Vorsino, A.; Vossbrinck, C.R.; Walzer, C.; White, J.C.; Wieczorek, A.; Wright, M. openurl 
  Title Permanent Genetic Resources added to Molecular Ecology Resources Database 1 June 2010-31 July 2010 Type Journal Article
  Year 2010 Publication Molecular Ecology Resources Abbreviated Journal Mol. Ecol. Resour.  
  Volume 10 Issue 6 Pages 1106-1108  
  Keywords  
  Abstract This article documents the addition of 205 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Bagassa guianensis, Bulweria bulwerii, Camelus bactrianus, Chaenogobius annularis, Creontiades dilutus, Diachasmimorpha tryoni, Dioscorea alata, Euhrychiopsis lecontei, Gmelina arborea, Haliotis discus hannai, Hirtella physophora, Melanaphis sacchari, Munida isos, Thaumastocoris peregrinus and Tuberolachnus salignus. These loci were cross-tested on the following species: Halobaena caerulea, Procellaria aequinoctialis, Oceanodroma monteiroi, Camelus ferus, Creontiades pacificus, Dioscorea rotundata, Dioscorea praehensilis, Dioscorea abyssinica, Dioscorea nummularia, Dioscorea transversa, Dioscorea esculenta, Dioscorea pentaphylla, Dioscorea trifida, Hirtella bicornis, Hirtella glandulosa, Licania alba, Licania canescens, Licania membranaceae, Couepia guianensis and 7 undescribed Thaumastocoris species.  
  Address [Andris, Malvina; Bried, Joel] Univ Acores, Ctr IMAR, Dept Oceanog & Pescas, P-9901862 Horta, Acores, Portugal, Email: editorial.office@molecol.com  
  Corporate Author Thesis  
  Publisher WILEY-BLACKWELL PUBLISHING, INC Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1755-098X ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000282876300024 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 28  
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