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Author Laurans, M.; Martin, O.; Nicolini, E.; Vincent, G. url  openurl
  Title Functional traits and their plasticity predict tropical trees regeneration niche even among species with intermediate light requirements Type Journal Article
  Year 2012 Publication (up) Journal of Ecology Abbreviated Journal J. Ecol.  
  Volume 100 Issue 6 Pages 1440-1452  
  Keywords Canopy disturbance; Determinants of plant community diversity and structure; Growth rate; Irradiance; Leaf life span; Leaf mass per area; Niche differentiation; Phenotypic plasticity; Shade tolerance; Tropical moist forest  
  Abstract Niche differentiation is a key issue in the current debate on community assembly mechanisms. In highly diverse moist tropical forests, tree species sensitivity to canopy openness is thought to be a major axis in niche differentiation. In the past, the syndrome of traits driving the demographic trade-off involved in the niche-based theory of coexistence has always been established among species situated at the two extremities of the shade-tolerance gradient, even though most tropical tree species have intermediate light requirements. In addition, trait plasticity has seldom been linked to tropical tree species distribution along environmental gradients. This article examines covariations between leaf traits, whole-plant traits and niche parameters among 14 tree species with intermediate light requirements in French Guiana and across a range of canopy openness. Each functional trait measured under field conditions was characterized by a median value and a degree of plasticity expressed under contrasting light regimes. Niche differentiation was characterized in terms of spatial light gradient. We first examined covariations between functional traits then explored to what degree the median value and plasticity in functional traits could predict light niche characteristics at the sapling stage and the ontogenetic change in light availability estimated by adult stature. Leaf mass per area (LMA) was positively correlated with leaf life span (LLS); species with higher LMA and higher LLS displayed lower diameter growth rates (GRs) and lower responsiveness to canopy gap at both whole-plant and population levels. This proved that the relationships previously established over a broader range of species held true within the narrow range of the light requirements covered. Height GR plasticity accounted for 49% of the variation in light niche optimum. LMA plasticity, unlike LLS plasticity, was significantly correlated with light niche breadth and adult stature. Synthesis. This study demonstrates the relevance of considering the phenotypic plasticity in functional traits in community ecology, particularly for quantifying breadth of species distribution over environmental gradients. Our findings did not support Hubbell's hypothesis of functional equivalence and suggest that even a rather subtle variation in forest canopy disturbance promotes the coexistence of tropical tree species. © 2012 The Authors. Journal of Ecology © 2012 British Ecological Society.  
  Address UMR AMAP, IRD, TA A-51/PS2, Bd de la Lironde, France  
  Corporate Author Thesis  
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  ISSN 00220477 (Issn) ISBN Medium  
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  Notes Export Date: 7 November 2012; Source: Scopus; Coden: Jecoa; doi: 10.1111/j.1365-2745.2012.02007.x; Language of Original Document: English; Correspondence Address: Laurans, M.; UMR, AMAP, CIRAD TA A-51/PS1, Bd de la Lironde, 34398 Montpellier Cedex 5, France; email: laurans@cirad.fr Approved no  
  Call Number EcoFoG @ webmaster @ Serial 445  
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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 (up) 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  
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  ISSN 00220477 (Issn) ISBN Medium  
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  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  
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Author Paine, C.E.T.; Amissah, L.; Auge, H.; Baraloto, C.; Baruffol, M.; Bourland, N.; Bruelheide, H.; Daïnou, K.; de Gouvenain, R.C.; Doucet, J.-L.; Doust, S.; Fine, P.V.A.; Fortunel, C.; Haase, J.; Holl, K.D.; Jactel, H.; Li, X.; Kitajima, K.; Koricheva, J.; Martínez-Garza, C.; Messier, C.; Paquette, A.; Philipson, C.; Piotto, D.; Poorter, L.; Posada, J.M.; Potvin, C.; Rainio, K.; Russo, S.E.; Ruiz-Jaen, M.; Scherer-Lorenzen, M.; Webb, C.O.; Wright, S.J.; Zahawi, R.A.; Hector, A. url  openurl
  Title Globally, functional traits are weak predictors of juvenile tree growth, and we do not know why Type Journal Article
  Year 2015 Publication (up) Journal of Ecology Abbreviated Journal Journal of Ecology  
  Volume 103 Issue 4 Pages 978-989  
  Keywords Functional ecology; FunDivEurope; Growth; Hierarchical models; Plant population and community dynamics; Relative growth rate; Size-standardized growth rate; TreeDivNet  
  Abstract Plant functional traits, in particular specific leaf area (SLA), wood density and seed mass, are often good predictors of individual tree growth rates within communities. Individuals and species with high SLA, low wood density and small seeds tend to have faster growth rates. If community-level relationships between traits and growth have general predictive value, then similar relationships should also be observed in analyses that integrate across taxa, biogeographic regions and environments. Such global consistency would imply that traits could serve as valuable proxies for the complex suite of factors that determine growth rate, and, therefore, could underpin a new generation of robust dynamic vegetation models. Alternatively, growth rates may depend more strongly on the local environment or growth-trait relationships may vary along environmental gradients. We tested these alternative hypotheses using data on 27 352 juvenile trees, representing 278 species from 27 sites on all forested continents, and extensive functional trait data, 38% of which were obtained at the same sites at which growth was assessed. Data on potential evapotranspiration (PET), which summarizes the joint ecological effects of temperature and precipitation, were obtained from a global data base. We estimated size-standardized relative height growth rates (SGR) for all species, then related them to functional traits and PET using mixed-effect models for the fastest growing species and for all species together. Both the mean and 95th percentile SGR were more strongly associated with functional traits than with PET. PET was unrelated to SGR at the global scale. SGR increased with increasing SLA and decreased with increasing wood density and seed mass, but these traits explained only 3.1% of the variation in SGR. SGR-trait relationships were consistently weak across families and biogeographic zones, and over a range of tree statures. Thus, the most widely studied functional traits in plant ecology were poor predictors of tree growth over large scales. Synthesis. We conclude that these functional traits alone may be unsuitable for predicting growth of trees over broad scales. Determining the functional traits that predict vital rates under specific environmental conditions may generate more insight than a monolithic global relationship can offer. The most widely studied functional traits in plant ecology, specific leaf area, wood density and seed mass, were only weakly associated with tree growth rates over broad scales. Assessing trait-growth relationships under specific environmental conditions may generate more insight than a global relationship can offer. © 2015 British Ecological Society.  
  Address Department of Plant Sciences, University of Oxford, Oxford, United Kingdom  
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  Notes Export Date: 3 July 2015 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 609  
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Author Vergne, Antoine ; Darbot, Vincent ; Bardot, Corinne ; Enault, François ; Le Jeune, Anne-Hélène ; Carrias, Jean-François ; Corbara, Bruno ; Céréghino, Régis ; Leroy, Celine ; Jeanthon, Christian ; Giraud, Eric ; Mary, Isabelle ; Lehours, Anne-Catherine doi  openurl
  Title Assemblages of anoxygenic phototrophic bacteria in tank bromeliads exhibit a host-specific signatureit Type Journal Article
  Year 2021 Publication (up) Journal of Ecology Abbreviated Journal  
  Volume 109 Issue 7 Pages 2550-2565  
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  Abstract Anoxygenic phototrophic bacteria (APB) are a very significant metabolic functional group in the phytotelmata of tank-forming Bromeliaceae plants. Considering the close relationships existing between the bromeliad and its tank microbiota, the dominance of APB raises the question of their role in the ecology and evolution of these plants. Here, using pufM gene sequencing for taxonomic profiling, we investigated the structure of APB communities in the tanks of five bromeliad species exhibiting different habitat characteristics (i.e. physicochemical factors associated with the host), and occurring in different localities of French Guiana.
We found that APB assemblages were specific to plant species and were less dependent on location or on bromeliad habitat characteristics. This convergence suggests that the identity of the bromeliad species per se is more important than habitat filtering or dispersal to control specific assembly rules for APB. The pufM OTUs were affiliated with five orders of Alpha- and Beta-proteobacteria (Rhodobacterales, Sphingomonadales, Rhizobiales, Burkholderiales and Rhodospirillales), and we assume that they may be major components of the core microbiota of plant-held waters. Our findings also revealed that up to 79% of the sequences were affiliated with APB clades possessing nitrogen-fixing genes suggesting that this metabolic capability is widespread within the APB community inhabiting tank bromeliads. We hypothesized that bromeliads may benefit nutritionally from associations with free-living APB capable to fix atmospheric nitrogen. Synthesis. Understanding the dominance of APB in tank bromeliads and determining whether a potential interplay exists between these partners is an intriguing aspect of possible mutualistic and coevolving interactions between the two existing forms of chlorophototrophy (i.e. bacteriochlorophyll-based anoxygenic and chlorophyll-based oxygenic phototrophy). In the present study, we found that bromeliad species was the main factor that explained variance in APB community composition. These findings suggest that APB and tank bromeliads may have a close, mutualistic relationship and we hypothesize according to our genomic analyses that APB may promote the bromeliad growth by provisioning essential nutrients like nitrogen.
 
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  Publisher British Ecological Society Place of Publication Editor  
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  Call Number EcoFoG @ webmaster @ Serial 1023  
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Author Marcon, E.; Puech, F. openurl 
  Title Measures of the geographic concentration of industries: improving distance-based methods Type Journal Article
  Year 2010 Publication (up) Journal of Economic Geography Abbreviated Journal J. Econ. Geogr.  
  Volume 10 Issue 5 Pages 745-762  
  Keywords Geographic concentration; distance-based methods; K-density function; Ripley's K function; M function; C40; C60; R12; L60  
  Abstract We discuss a property of distance-based measures that has not been addressed with regard to evaluating the geographic concentration of economic activities. The article focuses on the choice between a probability density function of point-pair distances or a cumulative function. We begin by introducing a new cumulative function, M, for evaluating the relative geographic concentration and the co-location of industries in a non-homogeneous spatial framework. Secondly, some rigorous comparisons are made with the leading probability density function of Duranton and Overman (2005), Kd. The merits of the simultaneous use of Kd and M is proved, underlining the complementary nature of the results they provide.  
  Address [Marcon, Eric] AgroParisTech ENGREF, UMR EcoFoG, Kourou 97310, French Guiana, Email: Florence.Puech@univ-lyon2.fr  
  Corporate Author Thesis  
  Publisher OXFORD UNIV PRESS Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1468-2702 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000281183300009 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 43  
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Author Marcon, E.; Puech, F. openurl 
  Title Evaluating the geographic concentration of industries using distance-based methods Type Journal Article
  Year 2003 Publication (up) Journal of Economic Geography Abbreviated Journal J. Econ. Geogr.  
  Volume 3 Issue 4 Pages 409-428  
  Keywords agglomeration; clustering; geographic concentration; location of firms  
  Abstract We propose new methods for evaluating the spatial distribution of firms. To assess whether firms are concentrated or dispersed, economists have traditionally used indices that analyse the heterogeneity of a spatial structure at a single geographic level. We introduce distance-based methods, Besag's L function (derived from Ripley's K function) and Diggle and Chetwynd's D function to describe simultaneously spatial distribution at different geographical scales. Our empirical applications consider the distribution of French manufacturing firms in the Paris area and in France generally. For some geographic levels, results show significant concentration or dispersion of firms according to their sector of activity.  
  Address ENGREF, Kourou 97310, French Guiana  
  Corporate Author Thesis  
  Publisher OXFORD UNIV PRESS Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1468-2702 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000185742500004 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 269  
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Author Vedel, V.; Lalague, H. pdf  url
openurl 
  Title Standardized sampling protocol for spider community assessment in the Neotropical rainforest Type Journal Article
  Year 2013 Publication (up) Journal of Entomology and Zoology Studies Abbreviated Journal J. Entomol. Zool. Stud.  
  Volume 2 Issue 1 Pages 18-34  
  Keywords Araneae; Biodiversity; French Guiana; Guianese Shield; Impact Assessment  
  Abstract We described, here, a standardized protocol to collect the maximum number of spiders per unit of effort from the different strata of a tropical forestry habitat. This would allow quantifying the richness of a site and would allow spatial and temporal comparisons between sites. This protocol was tested and applied in a pilot study at four sites representing three different forestry habitats of the natural reserve of La Trinité (French Guiana). Results showed every feeding guild was well represented and most of the 30 families found are represented by several individuals. Indices of species richness, number of singletons, species richness estimators from the accumulation curves and diversity and similarity indices were also calculated and all indicated that La Trinité is a rich and diverse site for spiders. The standardized protocol showed here its efficiency and its wide cover of micro-habitats and is, therefore, recommended for any impact assessment or diversity of spider study in tropical forestry environment.  
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  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Serial 487  
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Author Remy, C.C.; Fleury, M.; Beauchene, J.; Rivier, M.; Goli, T. doi  openurl
  Title Analysis of PAH Residues and Amounts of Phenols in Fish Smoked with Woods Traditionally Used in French Guiana Type Journal Article
  Year 2016 Publication (up) Journal of Ethnobiology Abbreviated Journal Journal of Ethnobiology  
  Volume 36 Issue 2 Pages 312-325  
  Keywords French Guiana; phenols; polycyclic aromatic hydrocarbons; smoked fish; traditional knowledge  
  Abstract Fish smoking with local wood species is a traditional practice in French Guiana. We evaluated the carcinogenic risk and the smoky taste in acoupa weakfish (Cynoscion acoupa) smoked by a small Guianese company specializing in fish smoking using local wood species. The goal of this study is to promote regional economic development by encouraging the establishment of small companies offering fish smoked with local wood species in agreement with the European health norms in terms of polycyclic aromatic hydrocarbon (PAH) content in smoked fish. The fish smoked with three species of wood traditionally used in French Guiana, Parinari campestris, Caesaria grandiflora, and Laetia procera, conformed to European standards for PAH content. Their phenol contents (correlated with the smoky taste) were close to smoked salmon, the reference in Europe. Given the low rate of extractable compounds in these woods, other flavors had little chance of predominating on the smoky taste. These three tropical wood species might be used for the production of cold smoked fish in compliance with European standards for PAH residues. The flavor and consumer's acceptance of the smoked fish should now be investigated to characterize the added typicity of local woods in comparison to the commonly used European woods. © 2016 Society of Ethnobiology.  
  Address 4UMR Qualisud, CIRAD Persyst Bât, France  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
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  Area Expedition Conference  
  Notes Export Date: 1 September 2016 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 692  
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Author Ogeron, C.; Odonne, G.; Cristinoi, A.; Engel, J.; Grenand, P.; Beauchene, J.; Clair, B.; Davy, D. pdf  url
doi  openurl
  Title Palikur traditional roundwood construction in eastern French Guiana: Ethnobotanical and cultural perspectives Type Journal Article
  Year 2018 Publication (up) Journal of Ethnobiology and Ethnomedicine Abbreviated Journal Journal of Ethnobiology and Ethnomedicine  
  Volume 14 Issue 28 Pages  
  Keywords Amazonia; Annonaceae; Architecture; Non-timber forest products; Oyapock; Palikur; Sapotaceae; Traditional technological knowledge  
  Abstract Background: Palikur Amerindians live in the eastern part of French Guiana which is undergoing deep-seated changes due to the geographical and economic opening of the region. So far, Palikur's traditional ecological knowledge is poorly documented, apart from medicinal plants. The aim of this study was to document ethnobotanical practices related to traditional construction in the region. Methods: A combination of qualitative and quantitative methods was used. Thirty-nine Palikur men were interviewed in three localities (Saint-Georges de l'Oyapock, Regina and Trois-Palétuviers) between December 2013 and July 2014. Twenty-four inventories of wood species used in traditional buildings were conducted in the villages, as well as ethnobotanical walks in the neighboring forests, to complete data about usable species and to determine Linnaean names. Results: After an ethnographic description of roundwood Palikur habitat, the in situ wood selection process of Palikur is precisely described. A total of 960 roundwood pieces were inventoried in situ according to Palikur taxonomy, of which 860 were beams and rafters, and 100 posts in 20 permanent and 4 temporary buildings. Twenty-seven folk species were identified. Sixty-three folk species used in construction were recorded during ethnobotanical walks. They correspond to 263 botanical species belonging to 25 families. Posts in permanent buildings were made of yawu (Minquartia guianensis) (51%) and wakap (Vouacapoua americana) (14%). Beams and rafters were made of wood from Annonaceae (79%) and Lecythidaceae (13%) families. The most frequently used species were kuukumwi priye (Oxandra asbeckii), kuukumwi seyne (Pseudoxandra cuspidata), and pukuu (Xylopia nitida and X. cayennensis). Conclusions: Although the Palikur's relationship with their habitat is undergoing significant changes, knowledge about construction wood is still very much alive in the Oyapock basin. Many people continue to construct traditional buildings alongside modern houses, using a wide array of species described here for the first time, along with the techniques used.  
  Address Université des Antilles, Université de Guyane, CIRAD, UMR Ecologie des Forêts de Guyane (EcoFoG), AgroParisTech, Cirad, INRA, Kourou, France  
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  Notes Export Date: 7 May 2018 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 802  
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Author Houel, E.; Bertani, S.; Bourdy, G.; Deharo, E.; Jullian, V.; Valentin, A.; Chevalley, S.; Stien, D. openurl 
  Title Quassinoid constituents of Quassia amara L. leaf herbal tea. Impact on its antimalarial activity and cytotoxicity Type Journal Article
  Year 2009 Publication (up) Journal of Ethnopharmacology Abbreviated Journal J. Ethnopharmacol.  
  Volume 126 Issue 1 Pages 114-118  
  Keywords Quassia amara L.; Simaroubaceae; Leaf tea; Antimalarial activity; Cytotoxicity; Simalikalactone D  
  Abstract Aim of the study: Our objective was to assess whether it could be contemplated to recommend Quassia amara young leaf tea for treatment against malaria. and if yes. set up a standard protocol for preparing the herbal tea. Materials and methods: The leaf tea was extracted with methylene chloride and the organic extract was fractionated with HPLC. Pure compounds were characterized and their in vitro cytotoxicity and antiplasmodial activity was determined. Results and discussion: We discovered that antimalarial Quassia amara young leaf tea contains several quassinoids: simalikalactone D (SkD. 1), picrasin B (2). picrasin H (3), neoquassin (4), quassin (5), picrasin 1(6) and picrasin J (7). These last two compounds are new. In addition. our experiments demonstrate that both biological activity and cytotoxicity of the remedy may be attributed solely to the presence of SkD. Conclusion: In conclusion, this preparation Should not be recommended for treatment of malaria until a clinical Study in humans is performed with SkD. (C) 2009 Elsevier Ireland Ltd. All rights reserved  
  Address [Stien, Didier] Univ Antilles Guyane, CNRS, UMR Ecofog, Inst Enseignement Super Guyane, F-97337 Cayenne, France, Email: didier.stien@guyane.cnrs.fr  
  Corporate Author Thesis  
  Publisher ELSEVIER IRELAND LTD Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0378-8741 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000271790800015 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 94  
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