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Marcon, E.; Puech, F. |
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Evaluating the geographic concentration of industries using distance-based methods |
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2003 |
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Journal of Economic Geography |
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J. Econ. Geogr. |
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3 |
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4 |
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409-428 |
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agglomeration; clustering; geographic concentration; location of firms |
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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. |
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ENGREF, Kourou 97310, French Guiana |
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OXFORD UNIV PRESS |
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1468-2702 |
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ISI:000185742500004 |
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EcoFoG @ eric.marcon @ |
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269 |
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Barabe, D.; Cuerrier, A.; Quilichini, A. |
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Botanical gardens: Between science and commercialization |
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2012 |
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Natures Sciences Societes |
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20 |
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3 |
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334-342 |
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Les jardins botaniques: Entre science et commercialisation. |
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Enseignante-chercheure en Écologie, CNRS, UMR8172 Icologie des Dorêts de Guyane, 97387 Kourou, France |
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Export Date: 3 January 2013; Source: Scopus |
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EcoFoG @ webmaster @ |
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455 |
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Colin, F.; Sanjines, A.; Fortin, M.; Bontemps, J.-D.; Nicolini, E. |
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Fagus sylvatica trunk epicormics in relation to primary and secondary growth |
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Journal Article |
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2012 |
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Annals of Botany |
Abbreviated Journal |
Ann. Bot. |
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110 |
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5 |
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995-1005 |
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epicormics; European beech; Fagus sylvatica; mixed ZIP models; ontogeny; radial growth; sprouting |
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Background and AimsEuropean beech epicormics have received far less attention than epicormics of other species, especially sessile oak. However, previous work on beech has demonstrated that there is a negative effect of radial growth on trunk sprouting, while more recent investigations on sessile oak proved a strong positive influence of the presence of epicormics. The aims of this study were, first, to make a general quantification of the epicormics present along beech stems and, secondly, to test the effects of both radial growth and epicormic frequency on sprouting. MethodsIn order to test the effect of radial growth, ten forked individuals were sampled, with a dominant and a dominated fork of almost equal length for every individual. To test the effects of primary growth and epicormic frequency, on the last 17 annual shoots of each fork arm, the number of axillary buds, shoot length, ring width profiles, epicormic shoots and other epicormics were carefully recorded. Key ResultsThe distribution of annual shoot length, radial growth profiles and parallel frequencies of all epicormics are presented. The latter frequencies were parallel to the annual shoot lengths, nearly equivalent for both arms of each tree, and radial growth profiles included very narrow rings in the lowest annual shoots and even missing rings in the dominated arms alone. The location of the latent buds and the epicormics was mainly at branch base, while epicormic shoots, bud clusters and spheroblasts were present mainly in the lowest annual shoots investigated. Using a zero-inflated mixed model, sprouting was shown to depend positively on epicormic frequency and negatively on radial growth. ConclusionsSupport for a trade-off between cambial activity and sprouting is put forward. Sprouting mainly depends on the frequency of epicormics. Between-and within-tree variability of the epicormic composition in a given species may thus have fundamental and applied implications. © 2012 The Author. |
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Equipe Architecture et Développement des Plantes, CIRAD, Campus Agronomique de Silvolab, BP 701, 97387 Kourou cedex, Guyane, France |
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03057364 (Issn) |
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Export Date: 8 October 2012; Source: Scopus; Coden: Anboa; doi: 10.1093/aob/mcs178; Language of Original Document: English; Correspondence Address: Colin, F.; INRA, Centre de Nancy, UMR 1092 INRA-AgroParisTech LERFoB, 54280 Champenoux, France; email: colin@nancy.inra.fr |
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EcoFoG @ webmaster @ |
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439 |
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Schimann, H.; Bach, C.; Lengelle, J.; Louisanna, E.; Barantal, S.; Murat, C.; Buée, M. |
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Diversity and Structure of Fungal Communities in Neotropical Rainforest Soils: The Effect of Host Recurrence |
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2017 |
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Microbial Ecology |
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Microbial Ecology |
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73 |
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2 |
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310-320 |
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Amazonian forest; Fungal communities; Host recurrence; Litter; Second-generation sequencing; Soil |
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The patterns of the distribution of fungal species and their potential interactions with trees remain understudied in Neotropical rainforests, which harbor more than 16,000 tree species, mostly dominated by endomycorrhizal trees. Our hypothesis was that tree species shape the non-mycorrhizal fungal assemblages in soil and litter and that the diversity of fungal communities in these two compartments is partly dependent on the coverage of trees in the Neotropical rainforest. In French Guiana, a long-term plantation and a natural forest were selected to test this hypothesis. Fungal ITS1 regions were sequenced from soil and litter samples from within the vicinity of tree species. A broad range of fungal taxa was found, with 42 orders and 14 classes. Significant spatial heterogeneity in the fungal communities was found without strong variation in the species richness and evenness among the tree plots. However, tree species shaped the fungal assemblages in the soil and litter, explaining up to 18 % of the variation among the communities in the natural forest. These results demonstrate that vegetation cover has an important effect on the structure of fungal assemblages inhabiting the soil and litter in Amazonian forests, illustrating the relative impact of deterministic processes on fungal community structures in these highly diverse ecosystems. © 2016, Springer Science+Business Media New York. |
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Equipe Environnement et Microbiologie, Institut Pluridisciplinaire de Recherche en Environnement et Matériaux, Université de Pau et Pays de l’Adour, Pau, France |
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Export Date: 19 February 2017 |
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EcoFoG @ webmaster @ |
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734 |
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Scotti-Saintagne, C.; Bertocchi, E.; Barreneche, T.; Kremer, A.; Plomion, C. |
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Quantitative trait loci mapping for vegetative propagation in pedunculate oak |
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Journal Article |
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2005 |
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Annals of Forest Science |
Abbreviated Journal |
Ann. For. Sci. |
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62 |
Issue |
4 |
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369-374 |
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vegetative propagation; QTL; Quercus robur |
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Vegetative propagation is one of the main methods used for the deployment of improved genetic forest tree species. The objective of this paper was to study the genetic architecture of vegetative propagation by detecting Quantitative Trait Loci (QTL) in pedunculate oak ( Quercus robur). The mapping population consisted on an F-1 family of 278 offspring. Assessment of rooting ability over three years permitted the detection of 10 QTLs explaining between 4.4 and 13.8% of phenotypic variance, of which the two strongest were stable across years. Ongoing genomics programs in trees and in Arabidopsis are starting to shed light on the nature of the underlying genes. |
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Equipe Genet, INRA, UMR 1202, BIOGECO, F-33612 Cestas, France, Email: christophe.plomion@pierroton.inra.fr |
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E D P SCIENCES |
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1286-4560 |
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ISI:000229668600010 |
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EcoFoG @ eric.marcon @ |
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255 |
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Amusant, N.; Beauchene, J.; Digeon, A.; Chaix, G. |
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Essential oil yield in rosewood (Aniba rosaeodora Ducke): Initial application of rapid prediction by near infrared spectroscopy based on wood spectra |
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Journal Article |
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2016 |
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Journal of Near Infrared Spectroscopy |
Abbreviated Journal |
Journal of Near Infrared Spectroscopy |
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24 |
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6 |
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507-515 |
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Aniba rosaeodora; Calibration; Essential oil yield; Nir; Pls; Rosewood |
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Rosewood (Aniba rosaeodora) essential oil is a valuable ingredient that has long been used in the perfume and cosmetic industries. The main rosewood timber quality parameters are its essential oil yield and quality. A hydrodistillation method has been developed for yield determination, but it is time consuming. Here we tested the applicability of near infrared (NIR) spectroscopy for determining essential oil yield directly from wood powder. Essential oil from 139 wood powders was extracted via hydrodistillation. The measurements were based on the ratio between the extracted essential oil mass and the oven-dried wood mass and were correlated with the wood powder NIR spectra. The calibration model statistical findings demonstrated that NIR could be a fast and feasible alternative method for selecting trees with a high essential oil yield potential. NIR-based predictions obtained in an independent validation set indicated a high correlation (r2e = 0.92) with laboratory essential oil yield measurements. This NIR model could help wood managers in selecting trees with a high essential oil yield potential and in developing sustainable rosewood management strategies. © IM Publications LLP 2016. All rights reserved. |
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ESALQ-USP, Piracicaba, Brazil |
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Cited By :1; Export Date: 17 January 2017 |
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no |
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EcoFoG @ webmaster @ |
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707 |
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Pastorello, G.; Trotta, C.; Canfora, E.; Chu, H.; Christianson, D.; Cheah, Y.-W.; Poindexter, C.; Chen, J.; Elbashandy, A.; Humphrey, M.; Isaac, P.; Polidori, D.; Ribeca, A.; van Ingen, C.; Zhang, L.; Amiro, B.; Ammann, C.; Arain, M.A.; Ardö, J.; Arkebauer, T.; Arndt, S.K.; Arriga, N.; Aubinet, M.; Aurela, M.; Baldocchi, D.; Barr, A.; Beamesderfer, E.; Marchesini, L.B.; Bergeron, O.; Beringer, J.; Bernhofer, C.; Berveiller, D.; Billesbach, D.; Black, T.A.; Blanken, P.D.; Bohrer, G.; Boike, J.; Bolstad, P.V.; Bonal, D.; Bonnefond, J.-M.; Bowling, D.R.; Bracho, R.; Brodeur, J.; Brümmer, C.; Buchmann, N.; Burban, B.; Burns, S.P.; Buysse, P.; Cale, P.; Cavagna, M.; Cellier, P.; Chen, S.; Chini, I.; Christensen, T.R.; Cleverly, J.; Collalti, A.; Consalvo, C.; Cook, B.D.; Cook, D.; Coursolle, C.; Cremonese, E.; Curtis, P.S.; D'Andrea, E.; da Rocha, H.; Dai, X.; Davis, K.J.; De Cinti, B.; de Grandcourt, A.; De Ligne, A.; De Oliveira, R.C.; Delpierre, N.; Desai, A.R.; Di Bella, C.M.; di Tommasi, P.; Dolman, H.; Domingo, F.; Dong, G.; Dore, S.; Duce, P.; Dufrêne, E.; Dunn, A.; Dušek, J.; Eamus, D.; Eichelmann, U.; ElKhidir, H.A.M.; Eugster, W.; Ewenz, C.M.; Ewers, B.; Famulari, D.; Fares, S.; Feigenwinter, I.; Feitz, A.; Fensholt, R.; Filippa, G.; Fischer, M.; Frank, J.; Galvagno, M.; Gharun, M.; Gianelle, D.; Gielen, B.; Gioli, B.; Gitelson, A.; Goded, I.; Goeckede, M.; Goldstein, A.H.; Gough, C.M.; Goulden, M.L.; Graf, A.; Griebel, A.; Gruening, C.; Grünwald, T.; Hammerle, A.; Han, S.; Han, X.; Hansen, B.U.; Hanson, C.; Hatakka, J.; He, Y.; Hehn, M.; Heinesch, B.; Hinko-Najera, N.; Hörtnagl, L.; Hutley, L.; Ibrom, A.; Ikawa, H.; Jackowicz-Korczynski, M.; Janouš, D.; Jans, W.; Jassal, R.; Jiang, S.; Kato, T.; Khomik, M.; Klatt, J.; Knohl, A.; Knox, S.; Kobayashi, H.; Koerber, G.; Kolle, O.; Kosugi, Y.; Kotani, A.; Kowalski, A.; Kruijt, B.; Kurbatova, J.; Kutsch, W.L.; Kwon, H.; Launiainen, S.; Laurila, T.; Law, B.; Leuning, R.; Li, Y.; Liddell, M.; Limousin, J.-M.; Lion, M.; Liska, A.J.; Lohila, A.; López-Ballesteros, A.; López-Blanco, E.; Loubet, B.; Loustau, D.; Lucas-Moffat, A.; Lüers, J.; Ma, S.; Macfarlane, C.; Magliulo, V.; Maier, R.; Mammarella, I.; Manca, G.; Marcolla, B.; Margolis, H.A.; Marras, S.; Massman, W.; Mastepanov, M.; Matamala, R.; Matthes, J.H.; Mazzenga, F.; McCaughey, H.; McHugh, I.; McMillan, A.M.S.; Merbold, L.; Meyer, W.; Meyers, T.; Miller, S.D.; Minerbi, S.; Moderow, U.; Monson, R.K.; Montagnani, L.; Moore, C.E.; Moors, E.; Moreaux, V.; Moureaux, C.; Munger, J.W.; Nakai, T.; Neirynck, J.; Nesic, Z.; Nicolini, G.; Noormets, A.; Northwood, M.; Nosetto, M.; Nouvellon, Y.; Novick, K.; Oechel, W.; Olesen, J.E.; Ourcival, J.-M.; Papuga, S.A.; Parmentier, F.-J.; Paul-Limoges, E.; Pavelka, M.; Peichl, M.; Pendall, E.; Phillips, R.P.; Pilegaard, K.; Pirk, N.; Posse, G.; Powell, T.; Prasse, H.; Prober, S.M.; Rambal, S.; Rannik, Ü.; Raz-Yaseef, N.; Reed, D.; de Dios, V.R.; Restrepo-Coupe, N.; Reverter, B.R.; Roland, M.; Sabbatini, S.; Sachs, T.; Saleska, S.R.; Sánchez-Cañete, E.P.; Sanchez-Mejia, Z.M.; Schmid, H.P.; Schmidt, M.; Schneider, K.; Schrader, F.; Schroder, I.; Scott, R.L.; Sedlák, P.; Serrano-Ortíz, P.; Shao, C.; Shi, P.; Shironya, I.; Siebicke, L.; Šigut, L.; Silberstein, R.; Sirca, C.; Spano, D.; Steinbrecher, R.; Stevens, R.M.; Sturtevant, C.; Suyker, A.; Tagesson, T.; Takanashi, S.; Tang, Y.; Tapper, N.; Thom, J.; Tiedemann, F.; Tomassucci, M.; Tuovinen, J.-P.; Urbanski, S.; Valentini, R.; van der Molen, M.; van Gorsel, E.; van Huissteden, K.; Varlagin, A.; Verfaillie, J.; Vesala, T.; Vincke, C.; Vitale, D.; Vygodskaya, N.; Walker, J.P.; Walter-Shea, E.; Wang, H.; Weber, R.; Westermann, S.; Wille, C.; Wofsy, S.; Wohlfahrt, G.; Wolf, S.; Woodgate, W.; Li, Y.; Zampedri, R.; Zhang, J.; Zhou, G.; Zona, D.; Agarwal, D.; Biraud, S.; Torn, M.; Papale, D. |
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Title |
The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data |
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Journal Article |
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2020 |
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Scientific data |
Abbreviated Journal |
Sci Data |
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7 |
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1 |
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225 |
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article; breathing; ecophysiology; ecosystem; Eddy covariance; licence; metadata; photosynthesis; pipeline; remote sensing; time series analysis; uncertainty |
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The FLUXNET2015 dataset provides ecosystem-scale data on CO2, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their data to create global datasets. Data were quality controlled and processed using uniform methods, to improve consistency and intercomparability across sites. The dataset is already being used in a number of applications, including ecophysiology studies, remote sensing studies, and development of ecosystem and Earth system models. FLUXNET2015 includes derived-data products, such as gap-filled time series, ecosystem respiration and photosynthetic uptake estimates, estimation of uncertainties, and metadata about the measurements, presented for the first time in this paper. In addition, 206 of these sites are for the first time distributed under a Creative Commons (CC-BY 4.0) license. This paper details this enhanced dataset and the processing methods, now made available as open-source codes, making the dataset more accessible, transparent, and reproducible. |
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Euro-Mediterranean Centre on Climate Change Foundation (CMCC), Lecce, 73100, Italy |
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NLM (Medline) |
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EcoFoG @ webmaster @ |
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958 |
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Céréghino, R.; Pillar, V.D.; Srivastava, D.S.; de Omena, P.M.; MacDonald, A.A.M.; Barberis, I.M.; Corbara, B.; Guzman, L.M.; Leroy, C.; Ospina Bautista, F.; Romero, G.Q.; Trzcinski, M.K.; Kratina, P.; Debastiani, V.J.; Gonçalves, A.Z.; Marino, N.A.C.; Farjalla, V.F.; Richardson, B.A.; Richardson, M.J.; Dézerald, O.; Gilbert, B.; Petermann, J.; Talaga, S.; Piccoli, G.C.O.; Jocqué, M.; Montero, G. |
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Constraints on the functional trait space of aquatic invertebrates in bromeliads |
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Journal Article |
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2018 |
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Functional Ecology |
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32 |
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10 |
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2435-2447 |
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aquatic invertebrates; ecological strategies; functional diversity; functional trait space; niche hypervolume |
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Functional traits are commonly used in predictive models that link environmental drivers and community structure to ecosystem functioning. A prerequisite is to identify robust sets of continuous axes of trait variation, and to understand the ecological and evolutionary constraints that result in the functional trait space occupied by interacting species. Despite their diversity and role in ecosystem functioning, little is known of the constraints on the functional trait space of invertebrate biotas of entire biogeographic regions. We examined the ecological strategies and constraints underlying the realized trait space of aquatic invertebrates, using data on 12 functional traits of 852 taxa collected in tank bromeliads from Mexico to Argentina. Principal Component Analysis was used to reduce trait dimensionality to significant axes of trait variation, and the proportion of potential trait space that is actually occupied by all taxa was compared to null model expectations. Permutational Analyses of Variance were used to test whether trait combinations were clade-dependent. The major axes of trait variation represented life-history strategies optimizing resource use and antipredator adaptations. There was evidence for trophic, habitat, defence and life-history niche axes. Bromeliad invertebrates only occupied 16%–23% of the potential space within these dimensions, due to greater concentrations than predicted under uniform or normal distributions. Thus, despite high taxonomic diversity, invertebrates only utilized a small number of successful ecological strategies. Empty areas in trait space represented gaps between major phyla that arose from biological innovations, and trait combinations that are unviable in the bromeliad ecosystem. Only a few phylogenetically distant genera were neighbouring in trait space. Trait combinations aggregated taxa by family and then by order, suggesting that niche conservatism was a widespread mechanism in the diversification of ecological strategies. A plain language summary is available for this article. © 2018 The Authors. Functional Ecology © 2018 British Ecological Society |
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Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, Zavalla, Argentina |
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Export Date: 22 October 2018 |
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EcoFoG @ webmaster @ |
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829 |
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Clair, B.; Alteyrac, J.; Gronvold, A.; Espejo, J.; Chanson, B.; Alméras, T. |
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Patterns of longitudinal and tangential maturation stresses in Eucalyptus nitens plantation trees |
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Journal Article |
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2013 |
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Annals of Forest Science |
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Ann. Forest Sci. |
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70 |
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8 |
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801-811 |
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Eucalyptus nitens; G-layer; Longitudinal maturation stress; Maturation strain; Tangential maturation stress; Tension wood |
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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. |
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Facultad de Ciencias Forestales, Universidad de Concepcion, Ciudad Universitaria, Concepcion, Chile |
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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 |
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EcoFoG @ webmaster @ |
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519 |
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Lehnebach, R.; Doumerc, L.; Clair, B.; Alméras, T. |
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Mechanical stress in the inner bark of 15 tropical tree species and the relationship with anatomical structure |
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Journal Article |
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2020 |
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Botany |
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Bot. |
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98 |
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1 |
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1-8 |
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Bark anatomical structure; Mechanical stress; Sclereids; Secondary phloem; Tree biomechanics; Tropical species |
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Recent studies have shown that the inner bark is implicated in the postural control of inclined tree stems through the interaction between wood radial growth and tangential expansion of a trellis fiber network in bark. Assessing the taxonomic extent of this mechanism requires a screening of the diversity in bark anatomy and mechanical stress. The mechanical state of bark was measured in 15 tropical tree species from various botanical families on vertical mature trees, and related to the anatomical structure of the bark. Significant tensile or compressive longitudinal stresses were observed in the stems of most species. Tensile longitudinal stress was observed in various botanical families and was always associated with fibers arranged in a trellis-like structure and strong dilatation of rays. The highest tensile stress was recorded in species with gelatinous fibers forming a treillis. Compressive stress was typically associated with a large amount of sclereids in the bark, supporting the differentiation of sclereids as a potential origin of the generation of longitudinal compressive stresses in bark. In species exhibiting both a fibrous trellis structure and a significant amount of sclereids, the sign of longitudinal stress may depend on the balance between these two mechanisms. |
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Faculty of Bioscience Engineering, Laboratory of Wood Technology, Woodlab, Coupure Links 653, Gent, B-9000, Belgium |
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Canadian Science Publishing |
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Cited By :1; Export Date: 20 January 2020; Correspondence Address: Lehnebach, R.; Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier, CNRS, 860 rue de St. Priest, France; email: lehnebach.romain@hotmail.fr |
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913 |
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