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Author | de Grandcourt, A.; Epron, D.; Montpied, P.; Louisanna, E.; Bereau, M.; Garbaye, J.; Guehl, J.M. | ||||
Title | Contrasting responses to mycorrhizal inoculation and phosphorus availability in seedlings of two tropical rainforest tree species | Type | Journal Article | ||
Year | 2004 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol. |
Volume | 161 | Issue | 3 | Pages | 865-875 |
Keywords | phosphorus; growth; efficiency; Paris-type arbuscular mycorrhizas; tropical rainforest; seedlings; Dicorynia guianensis; Eperua falcata | ||||
Abstract | This work aimed at understanding the role of mycorrhizal status in phosphorus efficiency of tree seedlings in the tropical rainforest of French Guyana. Mycorrhizal colonization, growth, phosphorus content, net photosynthesis and root respiration were determined on three occasions during a 9-month growth period for seedlings of two co-occurring species (Dicorynia guianensis and Eperua falcata) grown at three soil phosphorus concentrations, with or without inoculation with arbuscular mycorrhizas. Seedlings of both species were unable to absorb phosphorus in the absence of mycorrhizal association. Mycorrhizal seedlings exhibited coils that are specific of Paris-type mycorrhizae. Both species benefited from the mycorrhizal symbiosis in terms of phosphorus acquisition but the growth of E. falcata seedlings was unresponsive to this mycorrhizal improvement of phosphorus status, probably because of the combination of high seed mass and P reserves, with low growth rate. The two species belong to two different functional groups regarding phosphorus acquisition, D. guianensis being an obligate mycotrophic species. | ||||
Address | Univ Franche Comte, Lab Biol & Ecophysiol, F-25211 Montbeliard, France, Email: daniel.epron@scbiol.uhp-nancy.fr | ||||
Corporate Author | Thesis | ||||
Publisher | BLACKWELL PUBLISHING LTD | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
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Series Volume | Series Issue | Edition | |||
ISSN | 0028-646X | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | ISI:000188646500022 | Approved | no | ||
Call Number | EcoFoG @ eric.marcon @ | Serial | 239 | ||
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Author | Haettenschwiler, S.; Coq, S.; Barantal, S.; Handa, I.T. | ||||
Title | Leaf traits and decomposition in tropical rainforests: revisiting some commonly held views and towards a new hypothesis | Type | Journal Article | ||
Year | 2011 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol. |
Volume | 189 | Issue | 4 | Pages | 950-965 |
Keywords | energy starvation; French Guiana; litter quality; mycorrhizas; nutrient cycling; nutrient limitation; phosphorus; soil fauna | ||||
Abstract | Proper estimates of decomposition are essential for tropical forests, given their key role in the global carbon (C) cycle. However, the current paradigm for litter decomposition is insufficient to account for recent observations and may limit model predictions for highly diverse tropical ecosystems. In light of recent findings from a nutrient-poor Amazonian rainforest, we revisit the commonly held views that: litter traits are a mere legacy of live leaf traits; nitrogen (N) and lignin are the key litter traits controlling decomposition; and favourable climatic conditions result in rapid decomposition in tropical forests. Substantial interspecific variation in litter phosphorus (P) was found to be unrelated to variation in green leaves. Litter nutrients explained no variation in decomposition, which instead was controlled primarily by nonlignin litter C compounds at low concentrations with important soil fauna effects. Despite near-optimal climatic conditions, tropical litter decomposition proceeded more slowly than in a climatically less favourable temperate forest. We suggest that slow decomposition in the studied rainforest results from a syndrome of poor litter C quality beyond a simple lignin control, enforcing energy starvation of decomposers. We hypothesize that the litter trait syndrome in nutrient-poor tropical rainforests may have evolved to increase plant access to limiting nutrients via mycorrhizal associations. | ||||
Address | [Haettenschwiler, Stephan; Coq, Sylvain; Barantal, Sandra; Handa, Ira Tanya] CNRS, CEFE, F-34293 Montpellier 5, France, Email: stephan.hattenschwiler@cefe.cnrs.fr | ||||
Corporate Author | Thesis | ||||
Publisher | Wiley-Blackwell | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0028-646x | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | ISI:000286940500009 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 296 | ||
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Author | Fortunel, C.; Ruelle, J.; Beauchene, J.; Fine, P.V.A.; Baraloto, C. | ||||
Title | Wood specific gravity and anatomy of branches and roots in 113 Amazonian rainforest tree species across environmental gradients | Type | Journal Article | ||
Year | 2014 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol. |
Volume | 202 | Issue | 1 | Pages | 79-94 |
Keywords | Amazonian forests; Branch; Environmental gradients; Neotropical trees; Root; Wood anatomical traits; Wood density; Wood functions | ||||
Abstract | Wood specific gravity (WSG) is a strong predictor of tree performance across environmental gradients. Yet it remains unclear how anatomical elements linked to different wood functions contribute to variation in WSG in branches and roots across tropical forests. We examined WSG and wood anatomy in white sand, clay terra firme and seasonally flooded forests in French Guiana, spanning broad environmental gradients found throughout Amazonia. We measured 15 traits relating to branches and small woody roots in 113 species representing the 15 most abundant species in each habitat and representative species from seven monophyletic lineages occurring in all habitats. Fiber traits appear to be major determinants of WSG, independent of vessel traits, in branches and roots. Fiber traits and branch and root WSG increased from seasonally flooded species to clay terra firme species and lastly to white sand species. Branch and root wood traits were strongly phylogenetically constrained. Lineages differed in wood design, but exhibited similar variation in wood structure across habitats. We conclude that tropical trees can invest differently in support and transport to respond to environmental conditions. Wind disturbance and drought stress represent significant filters driving tree distribution of Amazonian forests; hence we suggest that biophysical explanations should receive more attention. © 2013 New Phytologist Trust. | ||||
Address | Department of Biology, University of Florida, Gainesville, FL, 32611, United States | ||||
Corporate Author | Thesis | ||||
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Language | Summary Language | Original Title | |||
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ISSN | 0028646x (Issn) | ISBN | Medium | ||
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Notes | Export Date: 10 March 2014; Source: Scopus; Coden: Nepha; 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, NSF, National Science Foundation; Funding Details: DEB-0743800, NSF, National Science Foundation | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 531 | ||
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Author | Chang, S.-S.; Quignard, F.; Alméras, T.; Clair, B. | ||||
Title | Mesoporosity changes from cambium to mature tension wood: A new step toward the understanding of maturation stress generation in trees | Type | Journal Article | ||
Year | 2015 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytologist |
Volume | 205 | Issue | 3 | Pages | 1277-1287 |
Keywords | Cell wall maturation; Maturation stress; Mesoporosity; Poplar (Populus deltoides × P. nigra); Tension wood | ||||
Abstract | In order to progress in the understanding of mechanical stress generation, the mesoporosity of the cell wall and its changes during maturation of poplar (Populus deltoides × P. nigra) tension wood (TW) and opposite wood (OW) were measured by nitrogen adsorption-desorption. Variations in the thickness of the gelatinous layer (G-layer) were also measured to clarify whether the mesoporosity change simultaneously with the deposition of the G-layer in TW. Results show that mesoporous structures of TW and OW were very similar in early development stages before the deposition of G-layers. With the formation of the S2 layer in OW and the G-layer in TW, the mesopore volume decreased steeply before lignification. However, in TW only, the decrease in mesopore volume occurred together with the pore shape change and a progressive increase in pore size. The different patterns observed in TW revealed that pores from G-layers appear with a different shape compared to those of the compound middle lamella, and their size increases during the maturation process until stabilising in mature wood. This observation strongly supports the hypothesis of the swelling of the G-layer matrix during maturation as the origin of maturation stress in poplar tension wood. | ||||
Address | CNRS, UMR Ecologie des Forêts de Guyane (EcoFoG), Campus Agronomique, BP 701Kourou, France | ||||
Corporate Author | Thesis | ||||
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Notes | Export Date: 28 January 2015 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 581 | ||
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Author | Martos, F.; Dulormne, M.; Pailler, T.; Bonfante, P.; Faccio, A.; Fournel, J.; Dubois, M.-P.; Selosse, M.-A. | ||||
Title | Independent recruitment of saprotrophic fungi as mycorrhizal partners by tropical achlorophyllous orchids | Type | Journal Article | ||
Year | 2009 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytologist |
Volume | 184 | Issue | 3 | Pages | 668-681 |
Keywords | Mycoheterotrophy; Mycorrhizas; Orchids; Rainforests; Saprotrophic fungi; Stable isotopes | ||||
Abstract | Mycoheterotrophic orchids have adapted to shaded forest understory by shifting to achlorophylly and receiving carbon from their mycorrhizal fungi. In temperate forests, they associate in a highly specific way with fungi forming ectomycorrhizas on nearby trees, and exploiting tree photosynthates. However, many rainforests lack ectomycorrhizal fungi, and there is evidence that some tropical Asiatic species associate with saprotrophic fungi. To investigate this in different geographic and phylogenetic contexts, we identified the mycorrhizal fungi supporting two tropical mycoheterotrophic orchids from Mascarene (Indian Ocean) and Caribbean islands. We tested their possible carbon sources by measuring natural nitrogen (15N) and carbon (13C) abundances. Saprotrophic basidiomycetes were found: Gastrodia similis associates with a wood-decaying Resinicium (Hymenochaetales); Wullschlaegelia aphylla associates with both litter-decaying Gymnopus and Mycena species, whose rhizomorphs link orchid roots to leaf litter. The 15N and 13C abundances make plausible food chains from dead wood to G. similis and from dead leaves to W. aphylla. We propose that temperature and moisture in rainforests, but not in most temperate forests, may favour sufficient saprotrophic activity to support development of mycoheterotrophs. By enlarging the spectrum of mycorrhizal fungi and the level of specificity in mycoheterotrophic orchids, this study provides new insights on orchid and mycorrhizal biology in the tropics. © 2009 New Phytologist. | ||||
Address | Dipartimento di Biologia Vegetale dell'Università, Istituto per la Protezione Delle Piante – CNR, Viale Mattioli 25, I-10125 Torino, Italy | ||||
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Notes | Cited By :65; Export Date: 7 February 2017 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 728 | ||
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Author | Roy, M.; Vasco-Palacios, A.; Geml, J.; Buyck, B.; Delgat, L.; Giachini, A.; Grebenc, T.; Harrower, E.; Kuhar, F.; Magnago, A.; Rinaldi, A.C.; Schimann, H.; Selosse, M.-A.; Sulzbacher, M.A.; Wartchow, F.; Neves, M.-A. | ||||
Title | The (re)discovery of ectomycorrhizal symbioses in Neotropical ecosystems sketched in Florianópolis | Type | Journal Article | ||
Year | 2017 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytologist |
Volume | 214 | Issue | 3 | Pages | 920-923 |
Keywords | barcoding; biodiversity; ectomycorrhizal fungi; ectomycorrhizal roots; ectomycorrhizal symbioses; fruitbodies; Neotropical ecosystems | ||||
Abstract | |||||
Address | Departamento de Sistemática e Ecologia/CCEN, Laboratório de Morfo-Taxonomia Fúngica, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil | ||||
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Notes | Cited By :1; Export Date: 23 April 2017 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 749 | ||
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Author | Santiago, L.S.; De Guzman, M.E.; Baraloto, C.; Vogenberg, J.E.; Brodie, M.; Hérault, B.; Fortunel, C.; Bonal, D. | ||||
Title | Coordination and trade-offs among hydraulic safety, efficiency and drought avoidance traits in Amazonian rainforest canopy tree species | Type | Journal Article | ||
Year | 2018 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol. |
Volume | 218 | Issue | 3 | Pages | 1015-1024 |
Keywords | Amazonian forest; cavitation; drought; hydraulic conductivity; sapwood capacitance; turgor loss point; wood density; xylem; cavitation; climate change; drought; forest canopy; forest ecosystem; hydraulic conductivity; rainforest; species diversity; tree; tropical forest; vulnerability; wood; Amazonia; French Guiana; Paracou | ||||
Abstract | Predicting responses of tropical forests to climate change-type drought is challenging because of high species diversity. Detailed characterization of tropical tree hydraulic physiology is necessary to evaluate community drought vulnerability and improve model parameterization. Here, we measured xylem hydraulic conductivity (hydraulic efficiency), xylem vulnerability curves (hydraulic safety), sapwood pressure–volume curves (drought avoidance) and wood density on emergent branches of 14 common species of Eastern Amazonian canopy trees in Paracou, French Guiana across species with the densest and lightest wood in the plot. Our objectives were to evaluate relationships among hydraulic traits to identify strategies and test the ability of easy-to-measure traits as proxies for hard-to-measure hydraulic traits. Xylem efficiency was related to capacitance, sapwood water content and turgor loss point, and other drought avoidance traits, but not to xylem safety (P50). Wood density was correlated (r = −0.57 to −0.97) with sapwood pressure–volume traits, forming an axis of hydraulic strategy variation. In contrast to drier sites where hydraulic safety plays a greater role, tropical trees in this humid tropical site varied along an axis with low wood density, high xylem efficiency and high capacitance at one end of the spectrum, and high wood density and low turgor loss point at the other. | ||||
Address | INRA, UMR Silva, AgroParisTech, Université de Lorraine, Nancy, 54000, France | ||||
Corporate Author | Thesis | ||||
Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
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ISSN | 0028646x (Issn) | ISBN | Medium | ||
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Notes | Cited By :6; Export Date: 3 December 2018; Coden: Nepha; Correspondence Address: Santiago, L.S.; Department of Botany & Plant Sciences, University of California, 2150 Batchelor Hall, United States; email: santiago@ucr.edu; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, FEDER 2014–2020; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, Project; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, GY0006894; Funding details: University of California, UC; Funding details: National Institute of Food and Agriculture, NIFA; Funding details: ANR-10-LABX-0025; Funding text 1: We would like to thank Benôıt Burban and Jean-Yves Goret for laboratory support, Jocelyn Cazal and Valentine Alt for skillfully climbing trees for samples, Aurelie Dourdain for database support, and Clement Stahl, John Sperry, Sean Gleason, Todd Dawson, Steve Davis, JoséLuiz Silva, Aleyda Acosta Rangel and three anonymous reviewers for comments and discussions on the data presented. The study has been supported by the TRY initiative on plant traits (http://www.try-db.org). The TRY initiative and database is hosted, developed and maintained by J. Kattge and G. Boenisch (Max Planck Institute for Biogeochemistry, Jena, Germany). TRY is currently supported by Future Earth/ bioDISCOVERY and the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig. We also acknowledge the University of California, Botany and Plant Sciences Department and the USDA National Institute of Food and Agriculture for support. We are grateful to the CIRAD and the GFclim project (FEDER 2014–2020, Project GY0006894) for financial support of the Paracou research station. Funding for fieldwork and data acquisition was provided by Investissement d’Avenir grants of the French ANR (CEBA: ANR-10-LABX-0025), through the ‘DRAMA’ and ‘HydroSTAT’ projects.; References: Allen, C.D., Macalady, A.K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Hogg, E.H., A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests (2010) Forest Ecology and Management, 259, pp. 660-684; Anderegg, W.R.L., Berry, J.A., Smith, D.D., Sperry, J.S., Anderegg, L.D.L., Field, C.B., The roles of hydraulic and carbon stress in a widespread climate-induced forest die-off (2012) Proceedings of the National Academy of Sciences, USA, 109, pp. 233-237; Anderegg, W.R.L., Klein, T., Bartlett, M., Sack, L., Pellegrini, A.F.A., Choat, B., Jansen, S., Meta-analysis reveals that hydraulic traits explain cross-species patterns of drought-induced tree mortality across the globe (2016) Proceedings of the National Academy of Sciences, USA, 113, pp. 5024-5029; Baraloto, C., Goldberg, D.E., Bonal, D., Performance trade-offs among tropical tree seedlings in contrasting microhabitats (2005) Ecology, 86, pp. 2461-2472; Baraloto, C., Hardy, O.J., Paine, C., Dexter, K.G., Cruaud, C., Dunning, L.T., Gonzalez, M.A., Savolainen, V., Using functional traits and phylogenetic trees to examine the assembly of tropical tree communities (2012) Journal of Ecology, 100, pp. 690-701; Barnard, D.M., Meinzer, F.C., Lachenbruch, B., McCulloh, K.A., Johnson, D.M., Woodruff, D.R., Climate-related trends in sapwood biophysical properties in two conifers: avoidance of hydraulic dysfunction through coordinated adjustments in xylem efficiency, safety and capacitance (2011) Plant, Cell & Environment, 34, pp. 643-654; Bartlett, M.K., Scoffoni, C., Sack, L., The determinants of leaf turgor loss point and prediction of drought tolerance of species and biomes: a global meta-analysis (2012) Ecology Letters, 15, pp. 393-405; Beer, C., Reichstein, M., Tomelleri, E., Ciais, P., Jung, M., Carvalhais, N., Rodenbeck, C., Bonan, G.B., Terrestrial gross carbon dioxide uptake: global distribution and covariation with climate (2010) Science, 329, pp. 834-838; Benjamini, Y., Hochberg, Y., On the adaptive control of the false discovery rate in multiple testing with independent statistics (2000) Journal of educational and Behavioral Statistics, 25, pp. 60-83; Bonal, D., Bosc, A., Ponton, S., Goret, J.-Y., Burban, B., Gross, P., Bonnefond, J., Epron, D., Impact of severe dry season on net ecosystem exchange in the Neotropical rainforest of French Guiana (2008) Global Change Biology, 14, pp. 1917-1933; Bonal, D., Burban, B., Stahl, C., Wagner, F., Herault, B., The response of tropical rainforests to drought-lessons from recent research and future prospects (2016) Annals of Forest Science, 73, pp. 27-44; Borchert, R., Pockman, W.T., Water storage capacitance and xylem tension in isolated branches of temperate and tropical trees (2005) Tree Physiology, 25, pp. 457-466; Bucci, S.J., Goldstein, G., Scholz, F.G., Meinzer, F.C., Physiological significance of hydraulic segmentation, nocturnal transpiration and capacitance in tropical trees: paradigms revisited (2016) Tropical tree physiology: adaptations and responses in a changing environment, pp. 205-225. , In, Goldstein G, Santiago LS, eds., Cham, Switzerland, Springer International; 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; Choat, B., Drayton, W.M., Brodersen, C., Matthews, M.A., Shackel, K.A., Wada, H., McElrone, A.J., Measurement of vulnerability to water stress-induced cavitation in grapevine: a comparison of four techniques applied to a long-vesseled species (2010) Plant, Cell & Environment, 33, pp. 1502-1512; Choat, B., Jansen, S., Brodribb, T.J., Cochard, H., Delzon, S., Bhaskar, R., Bucci, S.J., Hacke, U.G., Global convergence in the vulnerability of forests to drought (2012) Nature, 491, pp. 752-755; Christoffersen, B.O., Gloor, M., Fauset, S., Fyllas, N.M., Galbraith, D.R., Baker, T.R., Kruijt, B., Binks, O.J., Linking hydraulic traits to tropical forest function in a size-structured and trait-driven model (TFS v. 1-Hydro) (2016) Geoscientific Model Development, 9, pp. 4227-4255; De Guzman, M.E., Santiago, L.S., Schnitzer, S.A., Álvarez-Cansino, L., Trade-offs between water transport capacity and drought resistance in neotropical canopy liana and tree species (2017) Tree Physiology, 37, pp. 1404-1414; Dray, S., Dufour, A.-B., The ade4 package: implementing the duality diagram for ecologists (2007) Journal of Statistical Software, 22, pp. 1-20; Fortunel, C., Ruelle, J., Beauchene, J., Fine, P.V.A., Baraloto, C., Wood specific gravity and anatomy of branches and roots in 113 Amazonian rainforest tree species across environmental gradients (2014) New Phytologist, 202, pp. 79-94; Fu, R., Yin, L., Li, W.H., Arias, P.A., Dickinson, R.E., Huang, L., Chakraborty, S., Fisher, R., Increased dry-season length over southern Amazonia in recent decades and its implication for future climate projection (2013) Proceedings of the National Academy of Sciences, USA, 110, pp. 18110-18115; Gleason, S.M., Westoby, M., Jansen, S., Choat, B., Hacke, U.G., Pratt, R.B., Bhaskar, R., Cao, K.-F., Weak tradeoff between xylem safety and xylem-specific hydraulic efficiency across the world's woody plant species (2016) New Phytologist, 209, pp. 123-136; Gourlet-Fleury, S., Guehl, J.-M., Laroussinie, O., (2004) Ecology and management of a neotropical rainforest. Lessons drawn from Paracou, a long-term experimental research site in French Guiana, , Paris, France, Elsevier; Hacke, U.G., Sperry, J.S., Wheeler, J.K., Castro, L., Scaling of angiosperm xylem structure with safety and efficiency (2006) Tree Physiology, 26, pp. 689-701; Holtum, J.A.M., Winter, K., Elevated [CO2] and forest vegetation: more a water issue than a carbon issue? (2010) Functional Plant Biology, 37, pp. 694-702; Huntingford, C., Zelazowski, P., Galbraith, D., Mercado, L.M., Sitch, S., Fisher, R., Lomas, M., Booth, B.B.B., Simulated resilience of tropical rainforests to CO2-induced climate change (2013) Nature Geoscience, 6, pp. 268-273; Joetzjer, E., Delire, C., Douville, H., Ciais, P., Decharme, B., Fisher, R., Christoffersen, B., Ferreira, L.V., Predicting the response of the Amazon rainforest to persistent drought conditions under current and future climates: a major challenge for global land surface models (2014) Geoscientific Model Development, 7, pp. 2933-2950; Joetzjer, E., Douville, H., Delire, C., Ciais, P., Present-day and future Amazonian precipitation in global climate models: CMIP5 versus CMIP3 (2013) Climate Dynamics, 41, pp. 2921-2936; Kattge, J., Díaz, S., Lavorel, S., Prentice, I.C., Leadley, P., Bönisch, G., Garnier, E., Wright, I.J., TRY – a global database of plant traits (2011) Global Change Biology, 17, pp. 2905-2935; Maherali, H., Pockman, W.T., Jackson, R.B., Adaptive variation in the vulnerability of woody plants to xylem cavitation (2004) Ecology, 85, pp. 2184-2199; Manzoni, S., Vico, G., Katul, G., Palmroth, S., Jackson, R.B., Porporato, A., Hydraulic limits on maximum plant transpiration and the emergence of the safety–efficiency trade-off (2013) New Phytologist, 198, pp. 169-178; Maréchaux, I., Bartlett, M.K., Sack, L., Baraloto, C., Engel, J., Joetzjer, E., Chave, J., Drought tolerance as predicted by leaf water potential at turgor loss point varies strongly across species within an Amazonian forest (2015) Functional Ecology, 29, pp. 1268-1277; Martínez-Vilalta, J., Piñol, J., Beven, K., A hydraulic model to predict drought-induced mortality in woody plants: an application to climate change in the Mediterranean (2002) Ecological Modelling, 155, pp. 127-147; Medlyn, B.E., De Kauwe, M.G., Duursma, R.A., New developments in the effort to model ecosystems under water stress (2016) New Phytologist, 212, pp. 5-7; Meinzer, F.C., Goldstein, G., Scaling up from leaves to whole plants and canopies for photosynthetic gas exchange (1996) Tropical forest plant ecophysiology, pp. 114-138. , In, Mulkey SS, Chazdon RL, Smith AP, eds., New York, NY, USA, Chapman & Hall; Meinzer, F.C., James, S.A., Goldstein, G., Woodruff, D., Whole-tree water transport scales with sapwood capacitance in tropical forest canopy trees (2003) Plant, Cell & Environment, 26, pp. 1147-1155; Meinzer, F.C., Johnson, D.M., Lachenbruch, B., McCulloh, K.A., Woodruff, D.R., Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance (2009) Functional Ecology, 23, pp. 922-930; Meinzer, F.C., Woodruff, D.R., Domec, J.C., Goldstein, G., Campanello, P.I., Gatti, M.G., Villalobos-Vega, R., Coordination of leaf and stem water transport properties in tropical forest trees (2008) Oecologia, 156, pp. 31-41; Mencuccini, M., Minunno, F., Salmon, Y., Martínez-Vilalta, J., Hölttä, T., Coordination of physiological traits involved in drought-induced mortality of woody plants (2015) New Phytologist, 208, pp. 396-409; Morris, H., Plavcova, L., Cvecko, P., Fichtler, E., Gillingham, M.A.F., Martinez-Cabrera, H.I., McGlinn, D.J., Zieminska, K., A global analysis of parenchyma tissue fractions in secondary xylem of seed plants (2016) New Phytologist, 209, pp. 1553-1565; Phillips, O.L., van der Heijden, G., Lewis, S.L., Lopez-Gonzalez, G., Aragao, L., Lloyd, J., Malhi, Y., Davila, E.A., Drought-mortality relationships for tropical forests (2010) New Phytologist, 187, pp. 631-646; Pike, N., Using false discovery rates for multiple comparisons in ecology and evolution (2011) Methods in Ecology and Evolution, 2, pp. 278-282; Pivovaroff, A.L., Pasquini, S.C., De Guzman, M.E., Alstad, K.P., Stemke, J., Santiago, L.S., Multiple strategies for drought survival among woody plant species (2016) Functional Ecology, 30, pp. 517-526; Pockman, W.T., Sperry, J.S., Vulnerability to xylem cavitation and the distribution of Sonoran desert vegetation (2000) American Journal of Botany, 87, pp. 1287-1299; Preston, K.A., Cornwell, W.K., DeNoyer, J.L., Wood density and vessel traits as distinct correlates of ecological strategy in 51 California coast range angiosperms (2006) New Phytologist, 170, pp. 807-818; (2015) R: a language and environment for statistical computing, , Vienna, Austria, R Core Development Team; Saatchi, S.S., Harris, N.L., Brown, S., Lefsky, M., Mitchard, E.T.A., Salas, W., Zutta, B.R., Hagen, S., Benchmark map of forest carbon stocks in tropical regions across three continents (2011) Proceedings of the National Academy of Sciences, USA, 108, pp. 9899-9904; Sack, L., Pasquet-Kok, J., (2011) Leaf pressure–volume curve parameters, , http://prometheuswiki.publish.csiro.au/tiki-index.php?page=Leaf+pressure-volume+curve+parameters, [WWW document] URL, [accessed 9 August 2016] In Prometheus Wiki; Santiago, L.S., Bonal, D., De Guzman, M.E., Ávila-Lovera, E., Drought survival strategies of tropical trees (2016) Tropical tree physiology: adaptations and responses in a changing environment, pp. 243-258. , In, Goldstein G, Santiago LS, eds., Cham, Switzerland, Springer International; Santiago, L.S., Goldstein, G., Meinzer, F.C., Fisher, J.B., Machado, K., Woodruff, D., Jones, T., Leaf photosynthetic traits scale with hydraulic conductivity and wood density in Panamanian forest canopy trees (2004) Oecologia, 140, pp. 543-550; Scholz, F.G., Bucci, S.J., Goldstein, G., Meinzer, F.C., Franco, A.C., Miralles-Wilhelm, F., Biophysical properties and functional significance of stem water storage tissues in Neotropical savanna trees (2007) Plant, Cell & Environment, 30, pp. 236-248; Scholz, F., Phillips, N., Bucci, S., Meinzer, F., Goldstein, G., Hydraulic capacitance: biophysics and functional significance of internal water sources in relation to tree size (2011) Size- and age-related changes in tree structure and function, pp. 341-361. , In, Meinzer FC, Lachenbruch B, Dawson TE, eds., Dordrecht, the Netherlands, Springer; Sperry, J.S., Donnelly, J.R., Tyree, M.T., A method for measuring hydraulic conductivity and embolism in xylem (1988) Plant, Cell & Environment, 11, pp. 35-40; Sperry, J.S., Meinzer, F.C., McCulloh, K.A., Safety and efficiency conflicts in hydraulic architecture: scaling from tissues to trees (2008) Plant, Cell & Environment, 31, pp. 632-645; ter Steege, H., Pitman, N.C.A., Phillips, O.L., Chave, J., Sabatier, D., Duque, A., Molino, J.-F., Castellanos, H., Continental-scale patterns of canopy tree composition and function across Amazonia (2006) Nature, 443, pp. 444-447; Taiz, L., Zeiger, E., Møller, I.M., Murphy, A., (2015) Plant physiology and development, , Sunderland, MA, USA, Sinauer Associates; Tyree, M., Negative turgor pressure in plant cells: fact or fallacy? (1976) Canadian Journal of Botany, 54, pp. 2738-2746; Tyree, M.T., Davis, S.D., Cochard, H., Biophysical perspectives of xylem evolution: is there a tradeoff of hydraulic efficiency for vulnerability to dysfunction? (1994) IAWA Journal, 15, pp. 335-360; Tyree, M.T., Ewers, F.W., The hydraulic architecture of trees and other woody plants (1991) New Phytologist, 119, pp. 345-360; Webb, C.O., Donoghue, M.J., Phylomatic: tree assembly for applied phylogenetics (2005) Molecular Ecology Notes, 5, pp. 181-183; Wheeler, J.K., Sperry, J.S., Hacke, U.G., Hoang, N., Inter-vessel pitting and cavitation in woody Rosaceae and other vesselled plants: a basis for a safety versus efficiency trade-off in xylem transport (2005) Plant, Cell & Environment, 28, pp. 800-812; Xu, C., McDowell, N.G., Sevanto, S., Fisher, R.A., Our limited ability to predict vegetation dynamics under water stress (2013) New Phytologist, 200, pp. 298-300; Xu, X.T., Medvigy, D., Powers, J.S., Becknell, J.M., Guan, K.Y., Diversity in plant hydraulic traits explains seasonal and inter-annual variations of vegetation dynamics in seasonally dry tropical forests (2016) New Phytologist, 212, pp. 80-95; Zanne, A.E., Tank, D.C., Cornwell, W.K., Eastman, J.M., Smith, S.A., FitzJohn, R.G., McGlinn, D.J., Reich, P.B., Three keys to the radiation of angiosperms into freezing environments (2014) Nature, 506, pp. 89-92; Zanne, A.E., Westoby, M., Falster, D.S., Ackerly, D.D., Loarie, S.R., Arnold, S.E.J., Coomes, D.A., Angiosperm wood structure: global patterns in vessel anatomy and their relation to wood density and potential conductivity (2010) American Journal of Botany, 97, pp. 207-215 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 842 | ||
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Author | Clair, B.; Ghislain, B.; Prunier, J.; Lehnebach, R.; Beauchene, J.; Alméras, T. | ||||
Title | Mechanical contribution of secondary phloem to postural control in trees: the bark side of the force | Type | Journal Article | ||
Year | 2019 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol |
Volume | 221 | Issue | 1 | Pages | 209-217 |
Keywords | bark; Malvaceae; maturation stress; secondary phloem; tree biomechanics | ||||
Abstract | Summary To grow straight, plants need a motor system that controls posture by generating forces to offset gravity. This motor function in trees was long thought to be only controlled by internal forces induced in wood. Here we provide evidence that bark is involved in the generation of mechanical stresses in several tree species. Saplings of nine tropical species were grown tilted and staked in a shadehouse and the change in curvature of the stem was measured after releasing from the pole and after removing the bark. This first experiment evidenced the contribution of bark in the up-righting movement of tree stems. Combined mechanical measurements of released strains on adult trees and microstructural observations in both transverse and longitudinal/tangential plane enabled us to identify the mechanism responsible for the development of asymmetric mechanical stress in the bark of stems of these species. This mechanism does not result from cell wall maturation like in wood, or from the direct action of turgor pressure like in unlignified organs, but is the consequence of the interaction between wood radial pressure and a smartly organized trellis structure in the inner bark. | ||||
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Corporate Author | Thesis | ||||
Publisher | John Wiley & Sons, Ltd (10.1111) | Place of Publication | Editor | ||
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Series Volume | Series Issue | Edition | |||
ISSN | 0028-646x | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1111/nph.15375 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 853 | ||
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Author | Bréchet, Laëtitia M.; Daniel Warren; Stahl, Clément; Burban, Benoït; Goret, Jean-Yves; Salomon, Roberto L.; Janssens, Ivan A.o | ||||
Title | Simultaéneous tree stem and soil greenhouse gas (CO2, CH4, N2O) flux measurements: a novel design for continuous monitoring towards improving flux estimates and temporal resolution | Type | Journal Article | ||
Year | 2021 | Publication ![]() |
New Phytologist | Abbreviated Journal | |
Volume | 230 | Issue | 6 | Pages | 2487-2500 |
Keywords | système de chambre automatisé ; efflux de dioxyde de carbone ; flux de méthane ; flux d'oxyde nitreux ; tige d'arbre ; forêt tropicale | ||||
Abstract | Tree stems and soils can act as sources and sinks for the greenhouse gases (GHG) carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). Since both uptake and emission capacities can be large, especially in tropical rainforests, accurate assessments of the magnitudes and temporal variations of stem and soil GHG fluxes are required. We designed a new flexible stem chamber system for continuously measuring GHG fluxes in a French Guianese rainforest. Here, we describe this new system, which is connected to an automated soil GHG flux system, and discuss measurement uncertainty and potential error sources. In line with findings for soil GHG flux estimates, we demonstrated that lengthening the stem chamber closure time was required for accurate estimates of tree stem CH4 and N2O flux but not tree stem CO2 flux. The instrumented stem was a net source of CO2 and CH4 and a weak sink of N2O. Our experimental setup operated successfully in situ and provided continuous tree and soil GHG measurements at a high temporal resolution over an 11-month period. This automated system is a major step forward in the measurement of GHG fluxes in stems and the atmosphere concurrently with soil GHG fluxes in tropical forest ecosystems. | ||||
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Corporate Author | Thesis | ||||
Publisher | New Phytologist Foundation | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | ISBN | Medium | |||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ | Serial | 1004 | ||
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Author | Levionnois, S.; Ziegler, C.; Jansen, S.; Calvet, E.; Coste, S.; Stahl, C.; Salmon, C.; Delzon, S.; Guichard, C.; Heuret, P. | ||||
Title | Vulnerability and hydraulic segmentations at the stem–leaf transition: coordination across Neotropical trees | Type | Journal Article | ||
Year | 2020 | Publication ![]() |
New Phytologist | Abbreviated Journal | New Phytol. |
Volume | 228 | Issue | 2 | Pages | 512-524 |
Keywords | drought-induced embolism resistance; hydraulic segmentation; leaf-specific conductivity; stem–leaf transition; tropical trees; vulnerability segmentation; air bubble; hydraulic conductivity; leaf; Neotropical Region; rainforest; tropical forest; vulnerability; xylem | ||||
Abstract | Hydraulic segmentation at the stem–leaf transition predicts higher hydraulic resistance in leaves than in stems. Vulnerability segmentation, however, predicts lower embolism resistance in leaves. Both mechanisms should theoretically favour runaway embolism in leaves to preserve expensive organs such as stems, and should be tested for any potential coordination. We investigated the theoretical leaf-specific conductivity based on an anatomical approach to quantify the degree of hydraulic segmentation across 21 tropical rainforest tree species. Xylem resistance to embolism in stems (flow-centrifugation technique) and leaves (optical visualization method) was quantified to assess vulnerability segmentation. We found a pervasive hydraulic segmentation across species, but with a strong variability in the degree of segmentation. Despite a clear continuum in the degree of vulnerability segmentation, eight species showed a positive vulnerability segmentation (leaves less resistant to embolism than stems), whereas the remaining species studied exhibited a negative or no vulnerability segmentation. The degree of vulnerability segmentation was positively related to the degree of hydraulic segmentation, such that segmented species promote both mechanisms to hydraulically decouple leaf xylem from stem xylem. To what extent hydraulic and vulnerability segmentation determine drought resistance requires further integration of the leaf–stem transition at the whole-plant level, including both xylem and outer xylem tissue. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust | ||||
Address | Univ. Bordeaux, INRAE, BIOGECO, Pessac, F-33615, France | ||||
Corporate Author | Thesis | ||||
Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0028646x (Issn) | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ | Serial | 952 | ||
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