toggle visibility Search & Display Options

Select All    Deselect All
 |   | 
Details
   print
  Records Links
Author Dezerald, O.; Talaga, S.; Leroy, C.; Carrias, J.-F.; Corbara, B.; Dejean, A.; Céréghino, R. url  doi
openurl 
  Title Environmental determinants of macroinvertebrate diversity in small water bodies: Insights from tank-bromeliads Type Journal Article
  Year 2014 Publication Hydrobiologia Abbreviated Journal Hydrobiologia  
  Volume 723 Issue 1 Pages 77-86  
  Keywords Freshwater biodiversity; Linear mixed effect modelling; Microcosms; Phytotelmata; Ponds  
  Abstract The interlocking leaves of tank-forming bromeliads (Bromeliaceae) collect rainwater and detritus, thus creating a freshwater habitat for specialized organisms. Their abundance and the possibility of quantifying communities with accuracy give us unparalleled insight into how changes in local to regional environments influence community diversity in small water bodies. We sampled 365 bromeliads (365 invertebrate communities) along a southeastern to northwestern range in French Guiana. Geographic locality determined the species pool for bromeliad invertebrates, and local environments determined the abundance patterns through the selection of traits that are best adapted to the bromeliad habitats. Patterns in community structure mostly emerged from patterns of predator species occurrence and abundance across local-regional environments, while the set of detritivores remained constant. Water volume had a strong positive correlation with invertebrate diversity, making it a biologically relevant measure of the pools' carrying capacity. The significant effects of incoming detritus and incident light show that changes in local environments (e.g., the conversion of forest to cropping systems) strongly influence freshwater communities. Because changes in local environments do not affect detritivores and predators equally, one may expect functional shifts as sets of invertebrates with particular traits are replaced or complemented by other sets with different traits. © 2013 Springer Science+Business Media Dordrecht.  
  Address CNRS, EcoLab (UMR-CNRS 5245), 118 Route de Narbonne, 31062 Toulouse, 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 00188158 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 517  
Permanent link to this record
 

 
Author Lang, G.; Marcon, E. doi  openurl
  Title Testing randomness of spatial point patterns with the Ripley statistic Type Journal Article
  Year 2013 Publication ESAIM: Probability and Statistics Abbreviated Journal ESAIM PS  
  Volume 17 Issue Pages 767-788  
  Keywords Central limit theorem, goodness-of-fit test, Höffding decomposition, null, point pattern, Poisson process, null  
  Abstract Aggregation patterns are often visually detected in sets of location data. These clusters may be the result of interesting dynamics or the effect of pure randomness. We build an asymptotically Gaussian test for the hypothesis of randomness corresponding to a homogeneous Poisson point process. We first compute the exact first and second moment of the Ripley K-statistic under the homogeneous Poisson point process model. Then we prove the asymptotic normality of a vector of such statistics for different scales and compute its covariance matrix. From these results, we derive a test statistic that is chi-square distributed. By a Monte-Carlo study, we check that the test is numerically tractable even for large data sets and also correct when only a hundred of points are observed  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 518  
Permanent link to this record
 

 
Author Clair, B.; Alteyrac, J.; Gronvold, A.; Espejo, J.; Chanson, B.; Alméras, T. pdf  url
openurl 
  Title Patterns of longitudinal and tangential maturation stresses in Eucalyptus nitens plantation trees Type Journal Article
  Year 2013 Publication Annals of Forest Science Abbreviated Journal Ann. Forest Sci.  
  Volume 70 Issue 8 Pages 801-811  
  Keywords Eucalyptus nitens; G-layer; Longitudinal maturation stress; Maturation strain; Tangential maturation stress; Tension wood  
  Abstract Context: Tree orientation is controlled by asymmetric mechanical stresses set during wood maturation. The magnitude of maturation stress differs between longitudinal and tangential directions, and between normal and tension woods. Aims: We aimed at evaluating patterns of maturation stress on eucalypt plantation trees and their relation with growth, with a focus on tangential stress evaluation. Methods: Released maturation strains along longitudinal and tangential directions were measured around the circumference of 29 Eucalyptus nitens trees, including both straight and leaning trees. Results: Most trees produced asymmetric patterns of longitudinal maturation strain, but more than half of the maturation strain variability occurred between trees. Many trees produced high longitudinal tensile stress all around their circumference. High longitudinal tensile stress was not systematically associated with the presence of gelatinous layer. The average magnitude of released longitudinal maturation strain was found negatively correlated to the growth rate. A methodology is proposed to ensure reliable evaluation of released maturation strain in both longitudinal and tangential directions. Tangential strain evaluated with this method was lower than previously reported. Conclusion: The stress was always tensile along the longitudinal direction and compressive along the tangential direction, and their respective magnitude was positively correlated. This correlation does not result from a Poisson effect but may be related to the mechanism of maturation stress generation. © 2013 # The Author(s) 2013. This article is published with open access at Springerlink.com.  
  Address Facultad de Ciencias Forestales, Universidad de Concepcion, Ciudad Universitaria, Concepcion, Chile  
  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 12864560 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 16 December 2013; Source: Scopus; Coden: Afosf; doi: 10.1007/s13595-013-0318-4; Language of Original Document: English; Correspondence Address: Clair, B.; CNRS, UMR Ecologie des Forêts de Guyane (EcoFoG), Campus Agronomique, BP 701, 97387 Kourou, French Guiana; email: bruno.clair@univ-montp2.fr; Funding Details: ANR-12-BS09-0004, French National Research Agency; References: Alméras, T., Fournier, M., Biomechanical design and long-term stability of trees: Morphological and wood traits involved in the balance between weight increase and the gravitropic reaction (2009) J Theor Biol, 256, pp. 370-381. , 19013473 10.1016/j.jtbi.2008.10.011; Alméras, 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, 19, pp. 457-467. , 10.1007/s00468-005-0407-6; Archer, R.R., (1986) Growth Stresses and Strains in Trees, , Springer Verlag Berlin/Heidelberg/New York; Archer, R.R., On the origin of growth stresses in trees. Part 1: Micro mechanics of the developing cambial cell wall. Wood Sci (1987) Technol., 21, pp. 139-154; Baillères, H., Chanson, B., Fournier, M., Tollier, M.T., Monties, B., Structure, composition chimique et retraits de maturation du bois chez les clones d' Eucalyptus (1995) Ann Sci for, 52, pp. 157-172. , 10.1051/forest:19950206; Bergman, R., Cai, Z., Carll, C.G., Clausen, C.A., Ma, D., Falk, R.H., Frihart, C.R., Star, (2010) Wood Handbook: Wood As An Engineering Material, , U.S. Department of Agriculture, Forest Service, Forest Products Laboratory., Washington D.C. (USA)/Madison, WI, (USA); Biechele, T., Nutto, L., Becker, G., Growth strain in Eucalyptus nitens at different stages of development (2009) Silva Fennica, 43, pp. 669-679; Bonser, R.H.C., Ennos, A.R., Measurement of prestrain in trees:implications for the determination of safety factors (1998) Funct Ecol, 12, pp. 971-974. , 10.1046/j.1365-2435.1998.00279.x; Boyd, J.D., Tree growth stresses – Part I: Growth stress evaluation (1950) Austr. J. Sci. Res. Series B, Biological Sciences, 3, pp. 270-293; Boyd, J.D., Tree growth stresses – Part II: The development of shakes and other visual failure in timber (1950) Aust. J. App. Sci., 1, pp. 296-312; Clair, B., Alméras, T., Sugiyama, J., Compression stress in opposite wood of angiosperms: Observations in chestnut, mani and poplar (2006) Ann for Sci, 63, pp. 507-510. , 10.1051/forest:2006032; Clair, B., Ruelle, J., Beauchêne, J., Prevost, M.F., Fournier, M., Tension wood and opposite wood in 21 tropical rain forest species. 1. Occurence and efficiency of G-layer (2006) IAWA J, 27, pp. 329-338; Clair, B., Ruelle, J., Thibaut, B., Relationship between growth stress, mechano-physical properties and proportion of fibre with gelatinous layer in Chestnut (Castanea sativa Mill.) (2003) Holzforschung, 57, pp. 189-195. , 1:CAS:528:DC%2BD3sXjs1ensr8%3D; Coutand, C., Fournier, M., Moulia, B., The gravitropic response of poplar trunks: Key roles of prestressed wood regulation and the relative kinetics of cambial growth versus wood maturation (2007) Plant Physiol, 144, pp. 1166-1180. , 17468227 10.1104/pp.106.088153 1:CAS:528:DC%2BD2sXmvValtbg%3D; Fang, C.-H., Clair, B., Gril, J., Liu, S.-Q., Growth stresses are highly controlled by the amount of G-layer in poplar tension wood (2008) IAWA J, 29, pp. 237-246. , 10.1163/22941932-90000183; Ferrand, J.C., Study of growth stresses. 1. Measurement method on increment cores (1982) Ann Sci for, 39, pp. 109-142. , 10.1051/forest:19820201 (in French with English summary); Ferrand, J.C., Study of growth stresses. 2. Variations in the forest of growth stresses of beech (Fagus sylvatica) (1982) Ann Sci for, 39, pp. 187-218. , 10.1051/forest:19820301 (in French with English summary); Ferrand, J.C., Study of growth stresses. 3. Eucalyptus dedegatensis and Eucalyptus nitens – Influence of sylviculture and site index (1982) Ann Sci for, 39, pp. 355-378. , 10.1051/forest:19820402 (in French with English summary); Fournier, M., Chanson, B., Thibaut, B., Guitard, D., Measurement of residual growth strains at the stem surface. Observations of different species (1994) Ann. For. Sci., 51, pp. 249-266. , 10.1051/forest:19940305 (in French with English summary); Gerard, J., Bailleres, H., Fournier, M., Thibaut, B., Wood quality in plantation Eucalyptus – A study of variation in three reference properties (1995) Bois For. Trop, 245, pp. 101-110. , (in French with English summary); Giordano, G., Curro, P., Ghisi, G., Contribution of internal stresses in wood of Eucalyptus (1969) Wood Sci Technol, 3, pp. 1-13. , 10.1007/BF00349980; Jacobs, M.R., The fibre tension of woody stems, with special reference to the genus Eucalyptus (1938) Bull. Com. For. Bur, 22, p. 37; Jacobs, M.R., (1945) The Growth Stresses of Woody Stems, , Commonwealth Forestry Bureau Canberra, Australia; Jullien, D., Laghdir, A., Gril, J., Modelling log-end cracks due to growth stresses: Calculation of the elastic energy release rate (2003) Holzforschung, 57, pp. 407-414. , 10.1515/HF.2003.060 1:CAS:528:DC%2BD3sXntFeksrk%3D; Jullien, D., Gril, J., Growth strain assessment at the periphery of small-diameter trees using the two-grooves method: Influence of operating parameters estimated by numerical simulations (2008) Wood Sci. Technol., 42, pp. 551-565. , 10.1007/s00226-008-0202-9 1:CAS:528:DC%2BD1cXhtVOiu7jL; Jullien, D., Widmann, R., Loup, C., Thibaut, B., Relationship between tree morphology and growth stress in mature European beech stands (2013) Ann for Sci, 68, pp. 681-688; Kubler, H., Studies on growth stresses in trees – Part I: The origin of growth stresses and the stresses in transverse direction (1959) Holz Als Roh- Und Werkstoff, 17, pp. 1-9. , 10.1007/BF02608827; Kubler, H., Growth stresses in trees and related wood properties (1987) For. Abst., 48, pp. 131-189; Moulia, B., Coutand, C., Lenne, C., Posture control and skeletal mechanical acclimation in terrestrial plants: Implications for mechanical modelling of plant architecture (2006) Am J Bot, 93, pp. 1477-1489. , 21642095 10.3732/ajb.93.10.1477; Nicholson, J., A rapid method for estimating the longitudinal growth stress in logs (1971) Wood Sci. Technol., 5, pp. 40-48. , 10.1007/BF00363119; Nicholson, J.E., Growth stress differences in Eucalypts (1973) For Sci, 19, pp. 169-174; Okuyama, T., Sasaki, Y., Kikata, Y., Kawai, N., The seasonal change in growth stress in the tree trunk (1981) Mokuzai Gakkaishi, 27, pp. 350-355; Okuyama, T., Yamamoto, H., Yoshida, M., Hattori, Y., Archer, R.R., Growth stresses in tension wood: Role of microfibrils and lignification (1994) Ann for Sci, 51, pp. 291-300. , 10.1051/forest:19940308; Onaka, F., Studies on compression and tension wood (traduction) (1949) Wood Res, 1, pp. 1-88. , traduction n.p; Sasaki, Y., Okuyama, T., Kikata, Y., The evolution process of the growth stress in the tree. The surface stresses on the tree (1978) Mokuzai Gakkaishi, 24, pp. 140-157. , (in Japenese with English summary); Scurfield, G., Histochemistry of reaction wood cell walls in two species of Eucalyptus and in Tristania Conferta R (1972) Br. Aust. J. Bot., 20, pp. 9-26. , 10.1071/BT9720009 1:CAS:528:DyaE38XltFWksLk%3D; Yamamoto, H., Generation mechanism of growth stresses in wood cell walls: Roles of lignin deposition and cellulose microfibril during cell wall maturation (1998) Wood Sci. Technol., 32, pp. 171-182. , 1:CAS:528:DyaK1cXktlKhsb0%3D; Yamamoto, H., Abe, K., Arakawa, Y., Okuyama, T., Gril, J., Role of the gelatinous layer on the origin of the physical properties of the tension wood of Acer sieboldianum (2005) Wood Sci. Technol., 51, pp. 222-233. , 10.1007/s10086-004-0639-x 1:CAS:528:DC%2BD2MXpslOqurs%3D; Yamamoto, H., Yoshida, M., Okuyama, T., Growth stress controls negative gravitropism in woody plant stems (2002) Planta, 216, pp. 280-292. , 12447542 10.1007/s00425-002-0846-x 1:CAS:528:DC%2BD3sXktFOiug%3D%3D; Yang, J.L., Waugh, G., Growth stress, its measurement and effects (2001) Autr. For., 64, pp. 127-135; Yoshida, M., Ohta, H., Yamamoto, H., Okuyama, T., Tensile growth stress and lignin distribution in the cell walls of yellow poplar, Liriodendron tulipifera Linn (2002) Trees, 16, pp. 457-464. , 10.1007/s00468-002-0186-2 1:CAS:528:DC%2BD38XosFWltro%3D; Yoshida, M., Okuyama, T., Techniques for measuring growth stress (2002) Holzforschung, 56, pp. 461-467. , 10.1515/HF.2002.071 1:CAS:528:DC%2BD38XovVaru7c%3D Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 519  
Permanent link to this record
 

 
Author Fortunel, C.; Paine, C.E.T.; Fine, P.V.A.; Kraft, N.J.B.; Baraloto, C. url  openurl
  Title Environmental factors predict community functional composition in Amazonian forests Type Journal Article
  Year 2014 Publication Journal of Ecology Abbreviated Journal J. Ecol.  
  Volume 102 Issue 1 Pages 145-155  
  Keywords Amazonian landscape; Climatic and soil gradients; Determinants of plant community diversity and structure; Environmental filtering; Functional traits; Tree communities; Tropical forests  
  Abstract The consequences of biodiversity loss for ecosystem services largely depend on the functional identities of extirpated species. However, poor descriptions of spatial patterns of community functional composition across landscapes hamper accurate predictions, particularly in highly diverse tropical regions. Therefore, understanding how community functional composition varies across environmental gradients remains an important challenge. We sampled 15 functional traits in 800 Neotropical tree species across 13 forest plots representative of the broad climatic and soil gradients encompassed by three widespread lowland forest habitats (terra firme forests on clay-rich soils, seasonally flooded forests and white-sand forests) at opposite ends of Amazonia (Peru and French Guiana). We combined univariate and multivariate approaches to test the magnitude and predictability of environmental filtering on community leaf and wood functional composition. Directional shifts in community functional composition correlated with environmental changes across the 13 plots, with denser leaves, stems and roots in forests occurring in environments with limited water and soil-nutrient availability. Critically, these relationships allowed us to accurately predict the functional composition of 61 additional forest plots from environmental data alone. Synthesis. Environmental filtering consistently shapes the functional composition of highly diverse tropical forests at large scales across the terra firme, seasonally flooded and white-sand forests of lowland Amazonia. Environmental factors drive and allow the prediction of variation in community functional composition among habitat types in Amazonian forests. © 2013 British Ecological Society.  
  Address Department of Biology, University of Florida, Gainesville, FL, 32611, United States  
  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 00220477 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 31 December 2013; Source: Scopus; Coden: Jecoa; doi: 10.1111/1365-2745.12160; Language of Original Document: English; Correspondence Address: Fortunel, C.; INRA, UMR Ecologie des Forêts de Guyane, BP 709, Kourou Cedex, 97387, France; email: claire.fortunel@ecofog.gf; Funding Details: DEB-0743103/0743800, NSF, National Science Foundation; References: Agrawal, A.A., Fishbein, M., Plant defense syndromes (2006) Ecology, 87, pp. S132-S149; Anderson, L.O., Malhi, Y., Ladle, R.J., Aragao, L., Shimabukuro, Y., Phillips, O.L., Influence of landscape heterogeneity on spatial patterns of wood productivity, wood specific density and above ground biomass in Amazonia (2009) Biogeosciences, 6, pp. 1883-1902; Asner, G.P., Alencar, A., Drought impacts on the Amazon forest: the remote sensing perspective (2010) New Phytologist, 187, pp. 569-578; Asner, G.P., Loarie, S.R., Heyder, U., Combined effects of climate and land-use change on the future of humid tropical forests (2010) Conservation Letters, 3, pp. 395-403; Baraloto, C., Paine, C.E.T., Patiño, S., Bonal, D., Herault, B., Chave, J., Functional trait variation and sampling strategies in species-rich plant communities (2010) Functional Ecology, 24, pp. 208-216; Baraloto, C., Paine, C.E.T., Poorter, L., Beauchene, J., Bonal, D., Domenach, A.M., Hérault, B., Chave, J., Decoupled leaf and stem economics in rain forest trees (2010) Ecology Letters, 13, pp. 1338-1347; Baraloto, C., Rabaud, S., Molto, Q., Blanc, L., Fortunel, C., Hérault, B., Davila, N., Fine, P.V.A., Disentangling stand and environmental correlates of aboveground biomass in Amazonian forests (2011) Global Change Biology, 17, pp. 2677-2688; Baraloto, C., Molto, Q., Rabaud, S., Hérault, B., Valencia, R., Blanc, L., Fine, P.V.A., Thompson, J., Rapid simultaneous estimation of aboveground biomass and tree diversity across Neotropical forests: a comparison of field inventory methods (2013) Biotropica, 45, pp. 288-298; Belyea, L.R., Lancaster, J., Assembly rules within a contingent ecology (1999) Oikos, 86, pp. 402-416; Berry, S.L., Roderick, M.L., Estimating mixtures of leaf functional types using continental-scale satellite and climatic data (2002) Global Ecology and Biogeography, 11, pp. 23-39; Brando, P.M., Nepstad, D.C., Balch, J.K., Bolker, B., Christman, M.C., Coe, M., Putz, F.E., Fire-induced tree mortality in a neotropical forest: the roles of bark traits, tree size, wood density and fire behavior (2012) Global Change Biology, 18, pp. 630-641; Burnham, K.P., Anderson, D.R., Multimodel inference – understanding AIC and BIC in model selection (2004) Sociological Methods & Research, 33, pp. 261-304; Calcagno, V., de Mazancourt, C., glmulti: an R package for easy automated model selection with (generalized) linear models (2010) Journal of Statistical Software, 34, pp. 1-29; Chapin, F.S., BretHarte, M.S., Hobbie, S.E., Zhong, H.L., Plant functional types as predictors of transient responses of arctic vegetation to global change (1996) Journal of Vegetation Science, 7, pp. 347-358; Chaturvedi, R.K., Raghubanshi, A.S., Singh, J.S., Leaf attributes and tree growth in a tropical dry forest (2011) Journal of Vegetation Science, 22, pp. 917-931; Chave, J., Coomes, D., Jansen, S., Lewis, S.L., Swenson, N.G., Zanne, A.E., Towards a worldwide wood economics spectrum (2009) Ecology Letters, 12, pp. 351-366; Cingolani, A.M., Cabido, M., Gurvich, D.E., Renison, D., Diaz, S., Filtering processes in the assembly of plant communities: are species presence and abundance driven by the same traits? (2007) Journal of Vegetation Science, 18, pp. 911-920; Coates, K.D., Lilles, E.B., Astrup, R., Competitive interactions across a soil fertility gradient in a multispecies forest (2013) Journal of Ecology, 101, pp. 806-818; Cornwell, W.K., Ackerly, D.D., Community assembly and shifts in plant trait distributions across an environmental gradient in coastal California (2009) Ecological Monographs, 79, pp. 109-126; Cornwell, W.K., Schwilk, D.W., Ackerly, D.D., A trait-based test for habitat filtering: convex hull volume (2006) Ecology, 87, pp. 1465-1471; Craine, J.M., Reconciling plant strategy theories of Grime and Tilman (2005) Journal of Ecology, 93, pp. 1041-1052; de Deyn, G.B., Cornelissen, J.H.C., Bardgett, R.D., Plant functional traits and soil carbon sequestration in contrasting biomes (2008) Ecology Letters, 11, pp. 516-531; Dray, S., Dufour, A.B., The ade4 package: implementing the duality diagram for ecologists (2007) Journal of Statistical Software, 22, pp. 1-20; Engelbrecht, B.M.J., Comita, L.S., Condit, R., Kursar, T.A., Tyree, M.T., Turner, B.L., Hubbell, S.P., Drought sensitivity shapes species distribution patterns in tropical forests (2007) Nature, 447, pp. 80-82; Farquhar, G.D., Ehleringer, J.R., Hubick, K.T., Carbon isotope discrimination and photosynthesis (1989) Annual Review of Plant Physiology and Plant Molecular Biology, 40, pp. 503-537; Ferry, B., Morneau, F., Bontemps, J.D., Blanc, L., Freycon, V., Higher treefall rates on slopes and waterlogged soils result in lower stand biomass and productivity in a tropical rain forest (2010) Journal of Ecology, 98, pp. 106-116; Fine, P.V.A., Mesones, I., Coley, P.D., Herbivores promote habitat specialization by trees in Amazonian forests (2004) Science, 305, pp. 663-665; Fine, P.V.A., Miller, Z.J., Mesones, I., Irazuzta, S., Appel, H.M., Stevens, M.H.H., Saaksjarvi, I., Coley, P.D., The growth-defense trade-off and habitat specialization by plants in Amazonian forests (2006) Ecology, 87, pp. S150-S162; Fortunel, C., Fine, P.V.A., Baraloto, C., Leaf, stem and root tissue strategies across 758 Neotropical tree species (2012) Functional Ecology, 26, pp. 1153-1161; Fyllas, N.M., Patino, S., Baker, T.R., Nardoto, G.B., Martinelli, L.A., Quesada, C.A., Basin-wide variations in foliar properties of Amazonian forest: phylogeny, soils and climate (2009) Biogeosciences, 6, pp. 2677-2708; Grime, J.P., Vegetation classification by reference to strategies (1974) Nature, 250, pp. 26-31; Harrison, S.P., Prentice, I.C., Barboni, D., Kohfeld, K.E., Ni, J., Sutra, J.P., Ecophysiological and bioclimatic foundations for a global plant functional classification (2010) Journal of Vegetation Science, 21, pp. 300-317; Huston, M.A., Precipitation, soils, NPP, and biodiversity: resurrection of Albrecht's curve (2012) Ecological Monographs, 82, pp. 277-296; Ingram, T., Shurin, J.B., Trait-based assembly and phylogenetic structure in northeast Pacific rockfish assemblages (2009) Ecology, 90, pp. 2444-2453; Kadane, J.B., Lazar, N.A., Methods and criteria for model selection (2004) Journal of the American Statistical Association, 99, pp. 279-290; Katabuchi, M., Kurokawa, H., Davies, S.J., Tan, S., Nakashizuka, T., Soil resource availability shapes community trait structure in a species-rich dipterocarp forest (2012) Journal of Ecology, 100, pp. 643-651; Keddy, P.A., Assembly and response rules – two goals for predictive community ecology (1992) Journal of Vegetation Science, 3, pp. 157-164; Keith, D.A., Holman, L., Rodoreda, S., Lemmon, J., Bedward, M., Plant functional types can predict decade-scale changes in fire-prone vegetation (2007) Journal of Ecology, 95, pp. 1324-1337; Kitajima, K., Poorter, L., Tissue-level leaf toughness, but not lamina thickness, predicts sapling leaf lifespan and shade tolerance of tropical tree species (2010) New Phytologist, 186, pp. 708-721; Kraft, N.J.B., Valencia, R., Ackerly, D.D., Functional traits and niche-based tree community assembly in an Amazonian forest (2008) Science, 322, pp. 580-582; Landsberg, J., Modelling forest ecosystems: state of the art, challenges, and future directions (2003) Canadian Journal of Forest Research, 33, pp. 385-397; Laughlin, D.C., Fulé, P.Z., Huffman, D.W., Crouse, J., Laliberté, E., Climatic constraints on trait-based forest assembly (2011) Journal of Ecology, 99, pp. 1489-1499; Lavergne, S., Mouquet, N., Thuiller, W., Ronce, O., Biodiversity and climate change: integrating evolutionary and ecological responses of species and communities (2010) Annual Review of Ecology, Evolution, and Systematics, 41, pp. 321-350; Lavorel, S., Grigulis, K., McIntyre, S., Williams, N.S.G., Garden, D., Dorrough, J., Berman, S., Bonis, A., Assessing functional diversity in the field: methodology matters! (2008) Functional Ecology, 22, pp. 134-147; Lebrija-Trejos, E., Perez-Garcia, E.A., Meave, J.A., Bongers, F., Poorter, L., Functional traits and environmental filtering drive community assembly in a species-rich tropical system (2010) Ecology, 91, pp. 386-398; Liu, X., Swenson, N.G., Wright, S.J., Zhang, L., Song, K., Du, Y., Zhang, J., Ma, K., Covariation in plant functional traits and soil fertility within two species-rich forests (2012) PLoS ONE, 7, pp. e34767; Lortie, C.J., Brooker, R.W., Choler, P., Kikvidze, Z., Michalet, R., Pugnaire, F.I., Callaway, R.M., Rethinking plant community theory (2004) Oikos, 107, pp. 433-438; Malhi, Y., Roberts, J.T., Betts, R.A., Killeen, T.J., Li, W.H., Nobre, C.A., Climate change, deforestation, and the fate of the Amazon (2008) Science, 319, pp. 169-172; Muller-Landau, H.C., Interspecific and inter-site variation in wood specific gravity of tropical trees (2004) Biotropica, 36, pp. 20-32; Niinemets, U., Components of leaf dry mass per area – thickness and density – alter leaf photosynthetic capacity in reverse directions in woody plants (1999) New Phytologist, 144, pp. 35-47; Oksanen, J.F., Blanchet, G., Kindt, R., Legendre, P., Minchin, P.R., O'Hara, R.B., Simpson, G.L., Wagner, H., (2012), http://CRAN.R-project.org/package=vegan, vegan: Community Ecology Package. R package version 2.0-3Onoda, Y., Westoby, M., Adler, P.B., Choong, A.M.F., Clissold, F.J., Cornelissen, J.H.C., Global patterns of leaf mechanical properties (2011) Ecology Letters, 14, pp. 301-312; Ordonez, J.C., van Bodegom, P.M., Witte, J.P.M., Wright, I.J., Reich, P.B., Aerts, R., A global study of relationships between leaf traits, climate and soil measures of nutrient fertility (2009) Global Ecology and Biogeography, 18, pp. 137-149; Paine, C.E.T., Stahl, C., Courtois, E.A., Patino, S., Sarmiento, C., Baraloto, C., Functional explanations for variation in bark thickness in tropical rain forest trees (2010) Functional Ecology, 24, pp. 1202-1210; Paine, C.E.T., Baraloto, C., Chave, J., Herault, B., Functional traits of individual trees reveal ecological constraints on community assembly in tropical rain forests (2011) Oikos, 120, pp. 720-727; Parolin, P., Morphological and physiological adjustments to waterlogging and drought in seedlings of Amazonian floodplain trees (2001) Oecologia, 128, pp. 326-335; Parolin, P., De Simone, O., Haase, K., Waldhoff, D., Rottenberger, S., Kuhn, U., Kesselmeier, J., Junk, W.J., Central Amazonian floodplain forests: tree adaptations in a pulsing system (2004) Botanical Review, 70, pp. 357-380; Phillips, O.L., Vasquez Martinez, R., Nunez Vargas, P., Lorenzo Monteagudo, A., Chuspe Zans, M.E., Galiano Sanchez, W., Pena Cruz, A., Rose, S., Efficient plot-based floristic assessment of tropical forests (2003) Journal of Tropical Ecology, 19, pp. 629-645; Poorter, L., Wright, S.J., Paz, H., Ackerly, D.D., Condit, R., Ibarra-Manriques, G., Are functional traits good predictors of demographic rates? Evidence from five neotropical forests (2008) Ecology, 89, pp. 1908-1920; Quesada, C.A., Lloyd, J., Anderson, L.O., Fyllas, N.M., Schwarz, M., Czimczik, C.I., Soils of Amazonia with particular reference to the RAINFOR sites (2011) Biogeosciences, 8, pp. 1415-1440; Quesada, C.A., Phillips, O.L., Schwarz, M., Czimczik, C.I., Baker, T.R., Patino, S., Basin-wide variations in Amazon forest structure and function are mediated by both soils and climate (2012) Biogeosciences, 9, pp. 2203-2246; (2011), http://www.R-project.org, R Development Core TeamReich, P.B., Walters, M.B., Ellsworth, D.S., From tropics to tundra: global convergence in plant functioning (1997) Proceedings of the National Academy of Sciences of the United States of America, 94, pp. 13730-13734; Reu, B., Zaehle, S., Proulx, R., Bohn, K., Kleidon, A., Pavlick, R., Schmidtlein, S., The role of plant functional trade-offs for biodiversity changes and biome shifts under scenarios of global climatic change (2011) Biogeosciences, 7, pp. 7449-7473; Ryan, C.M., Hill, T., Woollen, E., Ghee, C., Mitchard, E., Cassells, G., Grace, J., Williams, M., Quantifying small-scale deforestation and forest degradation in African woodlands using radar imagery (2012) Global Change Biology, 18, pp. 243-257; Smith, M.J., Sibly, R.M., Identification of trade-offs underlying the primary strategies of plants (2008) Evolutionary Ecology Research, 10, pp. 45-60; ter Steege, H., Sabatier, D., Castellanos, H., Van Andel, T., Duivenvoorden, J., De Oliveira, A.A., Ek, R., Mori, S., An analysis of the floristic composition and diversity of Amazonian forests including those of the Guiana Shield (2000) Journal of Tropical Ecology, 16, pp. 801-828; ter Steege, H., Pitman, N.C.A., Phillips, O.L., Chave, J., Sabatier, D., Duque, A., Molino, J.F., Vasquez, R., Continental-scale patterns of canopy tree composition and function across Amazonia (2006) Nature, 443, pp. 444-447; Suding, K.N., Goldstein, L.J., Testing the Holy Grail framework: using functional traits to predict ecosystem change (2008) New Phytologist, 180, pp. 559-562; Swenson, N.G., Anglada-Cordero, P., Barone, J.A., Deterministic tropical tree community turnover: evidence from patterns of functional beta diversity along an elevational gradient (2010) Proceedings of the Royal Society of London. Series B, Biological Sciences, 278, pp. 877-884; Swenson, N.G., Enquist, B.J., Opposing assembly mechanisms in a neotropical dry forest: implications for phylogenetic and functional community ecology (2009) Ecology, 90, pp. 2161-2170; Swenson, N.G., Stegen, J.C., Davies, S.J., Erickson, D.L., Forero-Montaña, J., Hurlbert, A.H., Kress, W.J., Zimmerman, J.K., Temporal turnover in the composition of tropical tree communities: functional determinism and phylogenetic stochasticity (2012) Ecology, 93, pp. 490-499; Tilman, D., Constraints and tradeoffs – toward a predictive theory of competition and succession (1990) Oikos, 58, pp. 3-15; Wagner, F., Herault, B., Stahl, C., Bonal, D., Rossi, V., Modeling water availability for trees in tropical forests (2011) Agricultural and Forest Meteorology, 151, pp. 1202-1213; Wand, M.P., Fast computation of multivariate kernel estimators (1994) Journal of Computational and Graphical Statistics, 3, pp. 433-445; Warton, D.I., Wright, I.J., Falster, D.S., Westoby, M., Bivariate line-fitting methods for allometry (2006) Biological Reviews, 81, pp. 259-291; Webb, C.T., Hoeting, J.A., Ames, G.M., Pyne, M.I., Poff, N.L., A structured and dynamic framework to advance traits-based theory and prediction in ecology (2010) Ecology Letters, 13, pp. 267-283; Williamson, G.B., Wiemann, M.C., Measuring wood specific gravity ... correctly (2010) American Journal of Botany, 97, pp. 519-524; Wright, I.J., Reich, P.B., Westoby, M., Ackerly, D.D., Baruch, Z., Bongers, F., The worldwide leaf economics spectrum (2004) Nature, 428, pp. 821-827; Wright, I.J., Reich, P.B., Cornelissen, J.H.C., Falster, D.S., Garnier, E., Hikosaka, K., Assessing the generality of global leaf trait relationships (2005) New Phytologist, 166, pp. 485-496; Wright, I.J., Falster, D.S., Pickup, M., Westoby, M., Cross-species patterns in the coordination between leaf and stem traits, and their implications for plant hydraulics (2006) Physiologia Plantarum, 127, pp. 445-456; Wright, I.J., Ackerly, D.D., Bongers, F., Harms, K.E., Ibarra-Manriquez, G., Martinez-Ramos, M., Relationships among ecologically important dimensions of plant trait variation in seven Neotropical forests (2007) Annals of Botany, 99, pp. 1003-1015; Wright, S.J., Kitajima, K., Kraft, N.J.B., Reich, P.B., Wright, I.J., Bunker, D.E., Functional traits and the growth-mortality trade-off in tropical trees (2010) Ecology, 91, pp. 3664-3674 Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 520  
Permanent link to this record
 

 
Author Perrin, A.-S.; Fujisaki, K.; Petitjean, C.; Sarrazin, M.; Godet, M.; Garric, B.; Horth, J.-C.; Balbino, L.C.; Filho, A.S.; de Almeida Machado, P.L.O.; Brossard, M. url  doi
openurl 
  Title Conversion of forest to agriculture in Amazonia with the chop-and-mulch method: Does it improve the soil carbon stock? Type Journal Article
  Year 2014 Publication Agriculture, Ecosystems and Environment Abbreviated Journal Agric. Ecosyst. Environ.  
  Volume 184 Issue Pages 101-114  
  Keywords Annual crops; Brachiaria; Deforestation; Fire-free; French Guiana; No-tillage  
  Abstract Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16kgm-2 of carbon in 2mm-sieved soil down to 2m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30cm layer after each crop for three years. Carbon mass changes for soil fractions <2mm (soil C stock) and >2mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16kgCm-2yr-1) and C pools (+0.52 to 0.90kgCm-2yr-1) were measured in converted soils, compared to those of the forest into the top 30cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon decrease were measured between 1.5 and 2 years after forest conversion in the <2mm soil fraction, from 0.46kgCm-2yr-1 (in grassland soils) to 0.71kgCm-2yr-1 (in cropland under no tillage). The carbon pool declined during the third year at rates of 0.41kgCm-2yr-1 (cropland under disk tillage) to 0.76kgCm-2yr-1 (grassland soils). Three years after forest conversion, C masses in the top 30cm of soils for grassland showed similar values than for forest. In comparison, the carbon stock in cropped soils managed under no tillage in direct seeding (without mulch) was significantly 17% and 16% lower than in forest and grassland soils, respectively. None of the studied agricultural practices succeeded in accumulating carbon from the chopped forest biomass. © 2013 Elsevier B.V.  
  Address EMBRAPA Arroz e Feijao, Cx Postal 179, CEP 75375-000 Santo Antonio de Goias, GO, 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 01678809 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 2 January 2014; Source: Scopus; Coden: Aeend; doi: 10.1016/j.agee.2013.11.009 Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 521  
Permanent link to this record
 

 
Author Groc, S.; Delabie, J.H.C.; Fernández, F.; Leponce, M.; Orivel, J.; Silvestre, R.; Vasconcelos, H.L.; Dejean, A. openurl 
  Title Leaf-litter ant communities in a pristine Guianese rainforest: stable functional structure versus high species turnover Type Journal Article
  Year 2013 Publication Myrmecological News Abbreviated Journal Myrmecol. News  
  Volume 19 Issue Pages 43-51  
  Keywords  
  Abstract  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 523  
Permanent link to this record
 

 
Author Leroy, C.; Gril, E.; Si Ouali, L.; Coste, S.; Gérard, B.; Maillard, P.; Mercier, H.; Stahl, C. url  doi
openurl 
  Title Water and nutrient uptake capacity of leaf-absorbing trichomes vs. roots in epiphytic tank bromeliads Type Journal Article
  Year 2019 Publication Environmental and Experimental Botany Abbreviated Journal Environ. Exp. Bot.  
  Volume 163 Issue Pages 112-123  
  Keywords 15 N labelling; Carbon metabolism; Nutrient uptake; Plant performance; Tank bromeliad; Water status; Aechmea  
  Abstract The water and nutrient uptake mechanisms used by vascular epiphytes have been the subject of a few studies. While leaf absorbing trichomes (LATs) are the main organ involved in resource uptake by bromeliads, little attention has been paid to the absorbing role of epiphytic bromeliad roots. This study investigates the water and nutrient uptake capacity of LATs vs. roots in two epiphytic tank bromeliads Aechmea aquilega and Lutheria splendens. The tank and/or the roots of bromeliads were watered, or not watered at all, in different treatments. We show that LATs and roots have different functions in resource uptake in the two species, which we mainly attributed to dissimilarities in carbon acquisition and growth traits (e.g., photosynthesis, relative growth rate, non-structural carbohydrates, malate), to water relation traits (e.g., water and osmotic potentials, relative water content, hydrenchyma thickness) and nutrient uptake (e.g., 15 N-labelling). While the roots of A. aquilega did contribute to water and nutrient uptake, the roots of L. splendens were less important than the role played by the LATs in resource uptake. We also provide evidenced for a synergistic effect of combined watering of tank and root in the Bromelioideae species. These results call for a more complex interpretation of LATs vs. roots in resource uptake in bromeliads. © 2019 Elsevier B.V.  
  Address INRA, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, Kourou, 97310, France  
  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 00988472 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 871  
Permanent link to this record
 

 
Author Steidinger, B.S.; Crowther, T.W.; Liang, J.; Van Nuland, M.E.; Werner, G.D.A.; Reich, P.B.; Nabuurs, G.; de-Miguel, S.; Zhou, M.; Picard, N.; Herault, B.; Zhao, X.; Zhang, C.; Routh, D.; Peay, K.G.; Abegg, M.; Adou Yao, C.Y.; Alberti, G.; Almeyda Zambrano, A.; Alvarez-Davila, E.; Alvarez-Loayza, P.; Alves, L.F.; Ammer, C.; Antón-Fernández, C.; Araujo-Murakami, A.; Arroyo, L.; Avitabile, V.; Aymard, G.; Baker, T.; Bałazy, R.; Banki, O.; Barroso, J.; Bastian, M.; Bastin, J.-F.; Birigazzi, L.; Birnbaum, P.; Bitariho, R.; Boeckx, P.; Bongers, F.; Bouriaud, O.; Brancalion, P.H.S.; Brandl, S.; Brearley, F.Q.; Brienen, R.; Broadbent, E.; Bruelheide, H.; Bussotti, F.; Cazzolla Gatti, R.; Cesar, R.; Cesljar, G.; Chazdon, R.; Chen, H.Y.H.; Chisholm, C.; Cienciala, E.; Clark, C.J.; Clark, D.; Colletta, G.; Condit, R.; Coomes, D.; Cornejo Valverde, F.; Corral-Rivas, J.J.; Crim, P.; Cumming, J.; Dayanandan, S.; de Gasper, A.L.; Decuyper, M.; Derroire, G.; DeVries, B.; Djordjevic, I.; Iêda, A.; Dourdain, A.; Obiang, N.L.E.; Enquist, B.; Eyre, T.; Fandohan, A.B.; Fayle, T.M.; Feldpausch, T.R.; Finér, L.; Fischer, M.; Fletcher, C.; Fridman, J.; Frizzera, L.; Gamarra, J.G.P.; Gianelle, D.; Glick, H.B.; Harris, D.; Hector, A.; Hemp, A.; Hengeveld, G.; Herbohn, J.; Herold, M.; Hillers, A.; Honorio Coronado, E.N.; Huber, M.; Hui, C.; Cho, H.; Ibanez, T.; Jung, I.; Imai, N.; Jagodzinski, A.M.; Jaroszewicz, B.; Johannsen, V.; Joly, C.A.; Jucker, T.; Karminov, V.; Kartawinata, K.; Kearsley, E.; Kenfack, D.; Kennard, D.; Kepfer-Rojas, S.; Keppel, G.; Khan, M.L.; Killeen, T.; Kim, H.S.; Kitayama, K.; Köhl, M.; Korjus, H.; Kraxner, F.; Laarmann, D.; Lang, M.; Lewis, S.; Lu, H.; Lukina, N.; Maitner, B.; Malhi, Y.; Marcon, E.; Marimon, B.S.; Marimon-Junior, B.H.; Marshall, A.R.; Martin, E.; Martynenko, O.; Meave, J.A.; Melo-Cruz, O.; Mendoza, C.; Merow, C.; Monteagudo Mendoza, A.; Moreno, V.; Mukul, S.A.; Mundhenk, P.; Nava-Miranda, M.G.; Neill, D.; Neldner, V.; Nevenic, R.; Ngugi, M.; Niklaus, P.; Oleksyn, J.; Ontikov, P.; Ortiz-Malavasi, E.; Pan, Y.; Paquette, A.; Parada-Gutierrez, A.; Parfenova, E.; Park, M.; Parren, M.; Parthasarathy, N.; Peri, P.L.; Pfautsch, S.; Phillips, O.; Piedade, M.T.; Piotto, D.; Pitman, N.C.A.; Polo, I.; Poorter, L.; Poulsen, A.D.; Poulsen, J.R.; Pretzsch, H.; Ramirez Arevalo, F.; Restrepo-Correa, Z.; Rodeghiero, M.; Rolim, S.; Roopsind, A.; Rovero, F.; Rutishauser, E.; Saikia, P.; Saner, P.; Schall, P.; Schelhaas, M.-J.; Schepaschenko, D.; Scherer-Lorenzen, M.; Schmid, B.; Schöngart, J.; Searle, E.; Seben, V.; Serra-Diaz, J.M.; Salas-Eljatib, C.; Sheil, D.; Shvidenko, A.; Silva-Espejo, J.; Silveira, M.; Singh, J.; Sist, P.; Slik, F.; Sonké, B.; Souza, A.F.; Stereńczak, K.; Svenning, J.-C.; Svoboda, M.; Targhetta, N.; Tchebakova, N.; Steege, H.; Thomas, R.; Tikhonova, E.; Umunay, P.; Usoltsev, V.; Valladares, F.; van der Plas, F.; Van Do, T.; Vasquez Martinez, R.; Verbeeck, H.; Viana, H.; Vieira, S.; von Gadow, K.; Wang, H.-F.; Watson, J.; Westerlund, B.; Wiser, S.; Wittmann, F.; Wortel, V.; Zagt, R.; Zawila-Niedzwiecki, T.; Zhu, Z.-X.; Zo-Bi, I.C.; GFBI consortium url  doi
openurl 
  Title Climatic controls of decomposition drive the global biogeography of forest-tree symbioses Type Journal Article
  Year 2019 Publication Nature Abbreviated Journal Nature  
  Volume 569 Issue 7756 Pages 404-408  
  Keywords Fungi  
  Abstract The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools 1,2 , sequester carbon 3,4 and withstand the effects of climate change 5,6 . Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species 7 , constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.  
  Address Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway  
  Corporate Author Thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 00280836 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 872  
Permanent link to this record
 

 
Author Salhi, L.; Nait-Rabah, O.; Deyrat, C.; Roos, C. pdf  url
openurl 
  Title Numerical Modeling of Single Helical Pile Behavior under Compressive Loading in Sand Type Journal Article
  Year 2013 Publication Electronic Journal of Geotechnical Engineering Abbreviated Journal Electron. J. Geotech. Eng.  
  Volume 18 Issue Bundle T Pages 4119-4338  
  Keywords helical pile; finite element method; failure mechanisms; sand  
  Abstract The present research deals with helical piles behavior in cohesionless soil through finite element modeling. An approach of modeling of the screw-pile geometry has been proposed through the Finite Element Analysis (FEA) computer program Plaxis. The numerical results are compared with measurements from large scale test and the bearing capacity has been estimated using both cylindrical and individual bearing model. Moreover, different failure criterions have been applied to estimate the ultimate capacity. The effect of spacing ratio (S/Dh) on the screw-pile behavior has been further studied. It has found that results from the model fit the field results. Through the study of the load transfer mechanism, the transition from cylindrical shear to individual plate behavior occurs at a value of spacing ratio (1.5 to 2).  
  Address Laboratoire des matériaux et molécules en milieu amazonien, EcoFoG-Université des Antilles-Guyane, 97351 Cayenne, 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 Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 525  
Permanent link to this record
 

 
Author Houel, E.; Rodrigues, A.M.S.; Jahn-Oyac, A.; Bessière, J.-M.; Eparvier, V.; Deharo, E.; Stien, D. url  openurl
  Title In vitro antidermatophytic activity of Otacanthus azureus (Linden) Ronse essential oil alone and in combination with azoles Type Journal Article
  Year 2014 Publication Journal of Applied Microbiology Abbreviated Journal J. Appl. Microbiol.  
  Volume 116 Issue 2 Pages 288-294  
  Keywords Antifungal activity; Azoles; Dermatophytes; Essential oil; Otacanthus azureus; Synergy  
  Abstract Aims: We determined the chemical composition and investigated the antifungal activity of Otacanthus azureus (Linden) Ronse essential oil (EO) against a range of dermatophytes alone or in combination with azole antifungals. Methods and Results: Aerial parts of the plant were steam-distilled and the obtained oil was analysed by gas chromatography/mass spectrometry and 1H-NMR. It was shown to be largely composed of sesquiterpenes, with the main component being β-copaen-4-α-ol. Using broth microdilution techniques, this oil was found to have remarkable in vitro antifungal activities. Minimum inhibitory concentrations as low as 4 μg ml-1 were recorded. The analysis of the combined effect of the O. azureus EO with azoles using chequerboard assays revealed a synergism between the EO and ketoconazole, fluconazole or itraconazole against Trichophyton mentagrophytes. Notably, the O. azureus essential oil showed low cytotoxicity to VERO cells. Conclusions: The O. azureus essential oil alone or in combination with azoles is a promising antifungal agent in the treatment for human dermatomycoses caused by filamentous fungi. Significance and Impact of the Study: There is much interest in the study of essential oils for the discovery of new antimicrobial drugs. This study has highlighted the antidermatophytic activity of the O. azureus EO. © 2013 The Society for Applied Microbiology.  
  Address Institut de Recherche pour le Développement (IRD), UMR 152 Pharma-DEV, Toulouse, 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 13645072 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 9 February 2014; Source: Scopus; Coden: Jamif; Language of Original Document: English; Correspondence Address: Houël, E.; CNRS – UMR Ecologie des Forêts de Guyane (EcoFoG), Institut Pasteur de la Guyane, 23 Avenue Pasteur, BP6010, 97306 Cayenne Cedex, French Guiana; email: emeline.houel@ecofog.gf Approved no  
  Call Number (down) EcoFoG @ webmaster @ Serial 526  
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Save Citations:
Export Records: