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Author Ollivier, M.; Baraloto, C.; Marcon, E. openurl 
  Title A trait database for Guianan rain forest trees permits intra- and inter-specific contrasts Type Journal Article
  Year 2007 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume (down) 64 Issue 7 Pages 781-786  
  Keywords plant traits; tropical forest; French Guiana; functional groups; plasticity; ontogeny  
  Abstract We present a plant trait database covering autecology for rain forest trees of French Guiana. The database comprises more than thirty traits including autecology (e. g., habitat associations and reproductive phenology), wood structure (e. g., density and tension characteristics) and physiology at the whole plant (e. g., carbon and nitrogen isotopes) and leaf level (e. g., specific leaf area, photosynthetic capacity). The current database describes traits for about nine hundred species from three hundred genera in one hundred families. For more than sixty species, data on twelve morphological and ecophysiological traits are provided for individual plants under different environmental conditions and at different ontogenetic stages. The database is thus unique in permitting intraspecific analyses, such as the effects of ontogenetic stages or environmental conditions on trait values and their relationships.  
  Address INRA, Unit Mixte Rech Ecol Forets Guyane, Kourou, France, Email: baraloto.c@kourou.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:000250097700011 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 158  
Permanent link to this record
 

 
Author Ruelle, J.; Beauchene, J.; Thibaut, A.; Thibaut, B. openurl 
  Title Comparison of physical and mechanical properties of tension and opposite wood from ten tropical rainforest trees from different species Type Journal Article
  Year 2007 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume (down) 64 Issue 5 Pages 503-510  
  Keywords tension wood; opposite wood; tropical rainforest; physical and mechanical properties  
  Abstract On 10 trees from 10 species of French Guyana tropical rainforest in a clear active process of restoring verticality growth strains were measured in situ in order to determine the occurrence of tension wood within samples. Wood specimens were cut in the vicinity of the growth strains measurements in order to measure some mechanical and physical properties. As suspected, tensile growth strains was very much higher in tension wood zone, because longitudinal modulus of elasticity was slightly higher. Longitudinal shrinkage was also much higher in tension wood than in opposite wood.  
  Address UMR EcoFoG, Kourou 97387, Guyana, Email: ruelle@nuagr1.agr.nagoya-u.ac.jp  
  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:000248098600003 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 160  
Permanent link to this record
 

 
Author Bonal, D.; Born, C.; Brechet, C.; Coste, S.; Marcon, E.; Roggy, J.C.; Guehl, J.M. openurl 
  Title The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits Type Journal Article
  Year 2007 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume (down) 64 Issue 2 Pages 169-176  
  Keywords C-13; functional diversity; leaf gas exchange; species grouping; tropical rainforest  
  Abstract We characterised the among species variability in leaf gas exchange and morphological traits under controlled conditions of seedlings of 22 tropical rainforest canopy species to understand the origin of the variability in leaf carbon isotope discrimination (Delta) among species with different growth and dynamic characteristics (successional gradient). Our results first suggest that these species pursue a consistent strategy in terms of. throughout their ontogeny (juveniles grown here versus canopy adult trees from the natural forest). Second, leaf Delta was negatively correlated with WUE and N, and positively correlated with g(s), but among species differences in Delta were mainly explained by differences in WUE. Finally, species belonging to different successional groups display distinct leaf functional and morphological traits. We confirmed that fast growing early successional species maximise carbon assimilation with high stomatal conductance. In contrast, fast and slow growing late successional species are both characterised by low carbon assimilation values, but by distinct stomatal conductance and leaf morphological features. Along the successional gradient, these differences result in much lower Delta for the intermediate species (i.e. fast growing late successional) as compared to the two other groups.  
  Address INRA Kourou, UMR Ecol Forets Guyane, F-97387 Kourou, Guyane, France, Email: damien.bonal@kourou.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:000244438100006 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 169  
Permanent link to this record
 

 
Author Fournier, M.; Dlouhá, J.; Jaouen, G.; Almeras, T. url  openurl
  Title Integrative biomechanics for tree ecology: Beyond wood density and strength Type Journal Article
  Year 2013 Publication Journal of Experimental Botany Abbreviated Journal J. Exp. Bot.  
  Volume (down) 64 Issue 15 Pages 4793-4815  
  Keywords Biomechanics; Ecological strategy; Gravitropism; Shape; Size; Trees; Wood  
  Abstract Functional ecology has long considered the support function as important, but its biomechanical complexity is only just being elucidated. We show here that it can be described on the basis of four biomechanical traits, two safety traits against winds and self-buckling, and two motricity traits involved in sustaining an upright position, tropic motion velocity (MV) and posture control (PC). All these traits are integrated at the tree scale, combining tree size and shape together with wood properties. The assumption of trait constancy has been used to derive allometric scaling laws, but it was more recently found that observing their variations among environments and functional groups, or during ontogeny, provides more insights into adaptive syndromes of tree shape and wood properties. However, oversimpli-fed expressions have often been used, possibly concealing key adaptive drivers. An extreme case of oversimplification is the use of wood basic density as a proxy for safety. Actually, as wood density is involved in stiffiness, loads, and construction costs, the impact of its variations on safety is non-trivial. Moreover, other wood features, especially the microfibril angle (MFA), are also involved. Furthermore, wood is not only stiff and strong, but it also acts as a motor for MV and PC. The relevant wood trait for this is maturation strain asymmetry. Maturation strains vary with cell-wall characteristics such as MFA, rather than with wood density. Finally, the need for further studies about the ecological relevance of branching patterns, motricity traits, and growth responses to mechanical loads is discussed. © The Author 2013.  
  Address CNRS, Université de Montpellier 2, Laboratoire de Mécanique et Génie Civil, 34095 Montpellier, France  
  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 00220957 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Cited By (since 1996):1; Export Date: 2 December 2013; Source: Scopus; Coden: Jeboa; doi: 10.1093/jxb/ert279; Language of Original Document: English; Correspondence Address: Fournier, M.; AgroParisTech, UMR 1092 LERFOB, 54000 Nancy, France; email: meriem.fournier@agroparistech.fr; References: Achim, A., Ruel, J.C., Gardiner, B.A., Lafamme, G., Meunier, S., Modelling the vulnerability of balsam fr forests to wind damage (2005) Forest Ecology and Management, 204, pp. 35-50; Almeras, T., Costes, E., Salles, J.C., Identification of biomechanical factors involved in stem shape variability between apricot-tree varieties (2004) Annals of Botany, 93, pp. 1-14; Almeras, T., Derycke, M., Jaouen, G., Beauchene, J., Fournier, M., Functional diversity in gravitropic reaction among tropical seedlings in relation to ecological and developmental traits (2009) Journal of Experimental Botany, 60, pp. 4397-4410; Almeras, T., Fournier, M., Biomechanical design and longterm stability of trees: Morphological and wood traits involved in the balance between weight increase and the gravitropic reaction (2009) Journal of Theoretical Biology, 256, pp. 370-381; Almeras, T., Gril, J., Costes, E., Bending of apricot tree branches under the weight of axillary growth: Test of a mechanical model with experimental data (2002) Trees – Structure and Function, 16, pp. 5-15; Almeras, T., Thibaut, A., Gril, J., Effect of circumferential heterogeneity of wood maturation strain, modulus of elasticity and radial growth on the regulation of stem orientation in trees (2005) Trees – Structure and Function, 19, pp. 457-467; Anten, N.P.R., Schieving, F., The role of wood mass density and mechanical constraints in the economy of tree architecture (2010) American Naturalist, 175, pp. 250-260; Archer, R.R., Wilson, B.F., Mechanics of the compression wood response II. 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  Call Number EcoFoG @ webmaster @ Serial 513  
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Author Mayer, V.E.; Lauth, J.; Orivel, J. pdf  url
doi  openurl
  Title Convergent structure and function of mycelial galleries in two unrelated Neotropical plant-ants Type Journal Article
  Year 2017 Publication Insectes Sociaux Abbreviated Journal  
  Volume (down) 64 Issue 3 Pages 365-371  
  Keywords  
  Abstract The construction process and use of galleries by Azteca brevis (Myrmicinae: Dolichoderinae) inhabiting Tetrathylacium macrophyllum (Salicaceae) were compared with Allomerus decemarticulatus (Myrmicinae: Solenopsidini) galleries on Hirtella physophora (Chrysobalanaceae). Though the two ant species are phylogenetically distant, the gallery structure seems to be surprisingly similar and structurally convergent: both are pierced with numerous holes and both ant species use Chaetothyrialean fungi to strengthen the gallery walls. Al. decemarticulatus is known to use the galleries for prey capture and whether this is also the case for Az. brevis was tested in field experiments. We placed Atta workers as potential prey/threat on the galleries and recorded the behaviour of both ant species. We found considerable behavioural differences between them: Al. decemarticulatus was quicker and more efficient at capture than was Az. brevis. While most Atta workers were captured after the first 5 min by Al. decemarticulatus, significantly fewer were captured by Az. brevis even after 20 min. Moreover, the captured Atta were sometimes simply discarded and not taken to the nest by Az. brevis. As a consequence, the major function of the galleries built by Az. brevis may, therefore, be defense against intruders in contrast to Al. decemarticulatus which uses them mainly for prey capture. This may be due to a higher need for protein in Al. decemarticulatus compared to coccid-raising Az. brevis.  
  Address  
  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 1420-9098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Mayer2017 Serial 784  
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Author Lang, G.; Marcon, E.; Puech, F. doi  openurl
  Title Distance-based measures of spatial concentration: introducing a relative density function Type Journal Article
  Year 2020 Publication Annals of Regional Science Abbreviated Journal Ann. Reg. Sci.  
  Volume (down) 64 Issue 2 Pages 243-265  
  Keywords Agglomeration; Aggregation; Economic geography; Point patterns; Spatial concentration; accuracy assessment; econometrics; economic activity; economic geography; industrial agglomeration; industrial location; location decision; spatial analysis; spatial distribution  
  Abstract For more than a decade, distance-based methods have been widely employed and constantly improved in spatial economics. These methods are a very useful tool for accurately evaluating the spatial distribution of economic activity. We introduce a new distance-based statistical measure for evaluating the spatial concentration of industries. The m function is the first relative density function to be proposed in economics. This tool supplements the typology of distance-based methods recently drawn up by Marcon and Puech (J Econ Geogr 3(4):409–428, 2003). By considering several simulated and real examples, we show the advantages and the limits of the m function for detecting spatial structures in economics. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.  
  Address RITM, Univ. Paris-Sud, Université Paris-Saclay and CREST, Sceaux, France  
  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 05701864 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Serial 976  
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Author Guitet, S.; Blanc, L.; Trombe, P.J.; Lehallier, B. openurl 
  Title Silvicultural Treatments in the Tropical Forests of Guiana: A Review of Ten Years of Trials Type Journal Article
  Year 2009 Publication Bois et Forets des Tropiques Abbreviated Journal Bois For. Trop.  
  Volume (down) 63 Issue 301 Pages 7-19  
  Keywords cutting cycle; thinning; stand dynamics; logging; French Guiana  
  Abstract This article reviews an experimental system set up in French Guiana to test different selective thinning methods that started ten to fifteen years after logging in order to reconstitute commercially viable stands within the shortest time. The thinning methods tested involve a combination of selective intervention within a radius of 10 metres around crop trees and systematic intervention applied uniformly to the entire forest parcel. The resulting thinning intensity produces an 8% to 45% reduction in basal area. While the growth of the residual stand is strongly boosted in all species and for all diameters, there is little change in basal area because of high mortality and lower recruitment of commercial species. Standing commercial capital, however, is strongly affected by the thinning operations as defined. In effect, these thinning methods that benefit crop stems do not meet the objective of shorter rotations in Guiana's tropical logging forests. On the other hand, the measurements made in under-treatment stands agree with those obtained at the Paracou experimental station and confirm the need to adopt long cutting cycles of more than fifty years to ensure that the extraction of valuable species is sustainable in the current logging context in French Guiana.  
  Address [Guitet, Stephane; Trombe, Pierre-Julien; Lehallier, Benoit] Direct Reg Guyane, Off Natl Forets, F-97307 Cayenne, France  
  Corporate Author Thesis  
  Publisher CIRAD-CENTRE COOPERATION INT RECHERCHE AGRONOMIQUE POUR Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0006-579X ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000272488700002 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 91  
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Author Scotti, I.; Paglia, G.; Magni, F.; Morgante, M. openurl 
  Title Population genetics of Norway spruce (Picea abies Karst.) at regional scale: sensitivity of different microsatellite motif classes in detecting differentiation Type Journal Article
  Year 2006 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume (down) 63 Issue 5 Pages 485-491  
  Keywords conifers; SSR; divergence; statistical testing; genetic distance  
  Abstract Four populations of Norway spruce (Picea abies Karst.) were screened using nine nuclear microsatellite markers (three trinucleotides and six dinucleotides) and four chloroplast markers (all mononucleotides). Marker classes were compared for their variability, mutation rate and ability to detect differentiation between stands. Dinucleotide markers proved to be the most variable group and chloroplast stretches the least variable, with differences in mutation rate between the former and the latter spanning over two orders of magnitude. Variability correlated to the number of repeats but not to the absolute length of the microsatellite region. The different marker classes were combined with two different measures of genetic distance in order to investigate the performance of markers and evolutionary models for the study of genetic variation in natural populations of Norway spruce. Weir and Cockeram's F-ST generally performed better in this clear-cut, four-population model study. Chloroplast haplotypes turned out to be the most sensitive marker system, being able to differentiate populations and to detect differences in genetic variability between sub-regions.  
  Address INRA, UMR ECOFOG, Kourou 97387, French Guiana, Email: ivan.scotti@kourou.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:000240514800005 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 177  
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Author Marchal, R.; Mothe, F.; Denaud, L.E.; Thibaut, B.; Bleron, L. openurl 
  Title Cutting forces in wood machining – Basics and applications in industrial processes. A review COST Action E35 2004-2008: Wood machining – micromechanics and fracture Type Journal Article
  Year 2009 Publication Holzforschung Abbreviated Journal Holzforschung  
  Volume (down) 63 Issue 2 Pages 157-167  
  Keywords cutting forces; online control; peeling process; physico-mechanical model; sound; vibrations; wood industry; wood machining  
  Abstract The data available in the literature concerning wood cutting forces permits to build models or to simulate the main wood machining processes ( milling, sawing, peeling, etc.). This approach contributes to a better understanding of formation of wood surfaces and chips and the data may be helpful to optimise cutting geometry, reduce tool wear, improve tool material, and to size tool-machines. The models may also be useful for industrial application in two ways: ( 1) providing data to optimise the settings for a given operation ( batch approach), and ( 2) building predictive models that could be the basis of an online control system for the machining processes ( interactive approach). A prerequisite for this is that numerous machining tests on different wood materials are performed based on experiences with different kind of tools and experimental devices. With a focus on potential industrial applications, the emphasis of this review was on the wood peeling process, which is a very demanding special case of wood cutting. Although not so many industrial machines are equipped with expensive force sensors, there is a lot of high quality information available about cutting forces which may be useful to improve the scientific or technological knowledge in wood machining. Alternative parameters, such as vibration or sound measurements, appear to be promising substitutes in the praxis, particularly to feed online control systems of any wood cutting process.  
  Address [Marchal, Remy; Bleron, Laurent] Arts & Metiers ParisTech, LABOMAP, F-71250 Cluny, France, Email: remy.marchal@cluny.ensam.fr  
  Corporate Author Thesis  
  Publisher WALTER DE GRUYTER & CO Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0018-3830 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000263932200006 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 205  
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Author Clair, B.; Almeras, T.; Sugiyama, J. openurl 
  Title Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar Type Journal Article
  Year 2006 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume (down) 63 Issue 5 Pages 507-510  
  Keywords reaction wood; compression wood; tension wood; opposite wood; plant biomechanics; growth stresses; microfibrils angle  
  Abstract In order to face environmental constraints, trees are able to re-orient their axes by controlling the stress level in the newly formed wood layers. Angiosperms and gymnosperms evolved into two distinct mechanisms: the former produce a wood with large tension pre-stress on the upper side of the tilted axis, while the latter produce a wood with large compression pre-stress on the lower side. In both cases, the difference between this stress level and that of the opposite side, in light tension, generates the bending of the axis. However, light values of compression were sometimes measured in the opposite side of angiosperms. By analysing old data on chestnut and mani and new data on poplar, this study shows that these values were not measurement artefacts. This reveals that generating light compression stress in opposite wood contributes to improve the performance of the re-orientation mechanism.  
  Address Kyoto Univ, Res Inst Sustainable Humanosphere, Lab Biomass Morphogenesis & Informat, Uji, Kyoto 6110011, Japan, Email: clair@lmgc.univ-montp2.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:000240514800008 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 223  
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