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Dejean, A.; Corbara, B.; Roux, O.; Orivel, J. |
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The antipredatory behaviours of neotropical ants towards army ant raids (Hymenoptera: Formicidae) |
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Journal Article |
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2014 |
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Myrmecological News |
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Myrmecological News |
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19 |
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17-24 |
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Antipredatory behaviour; Army ants; Ecitoninae; Prey-ant species |
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Group hunting, nomadism, wingless queens and colony fission characterize army ants, allowing them to have become the main tropical arthropod predators, mostly of other social insects. We studied the reactions of different ant species to the New World army ants Eciton burchellii (WESTWOOD, 1842) and E. hamatum (FABRICIUS, 1782) (Ecitoninae). We compiled our results with those already known in a synthetic appendix. A wide range of ant species react to the ap-proach of army ant raids by evacuating their nests with several workers transporting brood. The Eciton plunder a large part of the brood but rarely kill workers or queens, so that the latter return to their nest and resume colony activity. One exception is Paratrechina longicornis (LATREILLE, 1802) colonies that quickly evacuate their nest, so that the entire col-ony can generally escape a raid. Another is Leptogenys mexicana (MAYR, 1870) that leave their nests in columns while some nestmates resist the attack; they therefore lose only a few larvae. We noted that colonies can avoid being raided if the army ants ignore them (Atta cephalotes (LINNAEUS, 1758)), or if the workers produce a repellent substance (Azteca associated with myrmecophytic Cecropia) or are repellent themselves (Pachycondyla villosa (FABRICIUS, 1804), Ec-tatomma spp.). In the other cases, a part of the brood is lost. When an Eciton raid approached the base of their host-tree trunk, Azteca andreae GUERRERO, DELABIE and DEJEAN, 2010 workers dropped a part of their brood on the ground. While numerous Eciton workers were gathering up this brood, the front of the column advanced, so that the Azteca andreae nests were not plundered. Pheidole megacephala (FABRICIUS, 1793) nests were partly plundered as the workers reacted aggressively, blocking the Eciton inside their nests during a long time. When the latter returned toward their bivouac, they were attacked and killed by their nestmates whether or not they had retrieved Pheidole brood. Consequently, the front of the column turned away from the Pheidole nest. |
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Maladies Infectieuses et Vecteurs, Evolution et Contrôle (UMR- IRD 224) Équipe BEES, IRD 01, BP 171 Bobo-Dioulasso, Burkina Faso |
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Export Date: 10 March 2014; Source: Scopus; Language of Original Document: English; Correspondence Address: Dejean, A.; Écologie des Forêts de Guyane (UMR-CNRS 8172), Campus agronomique, BP 316, 97379 Kourou cedex, France; email: alain.dejean@wanadoo.fr |
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EcoFoG @ webmaster @ |
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535 |
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Romero, G.Q.; Marino, N.A.C.; MacDonald, A.A.M.; Céréghino, R.; Trzcinski, M.K.; Mercado, D.A.; Leroy, C.; Corbara, B.; Farjalla, V.F.; Barberis, I.M.; Dézerald, O.; Hammill, E.; Atwood, T.B.; Piccoli, G.C.O.; Bautista, F.O.; Carrias, J.-F.; Leal, J.S.; Montero, G.; Antiqueira, P.A.P.; Freire, R.; Realpe, E.; Amundrud, S.L.; de Omena, P.M.; Campos, A.B.A.; Kratina, P.; O’Gorman, E.J.; Srivastava, D.S. |
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Title |
Extreme rainfall events alter the trophic structure in bromeliad tanks across the Neotropics |
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Journal Article |
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2020 |
Publication |
Nature Communications |
Abbreviated Journal |
Nat. Commun. |
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11 |
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3215 |
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fresh water; rain; fresh water; agricultural intensification; angiosperm; biomass; climate change; ecosystem function; extreme event; food web; freshwater ecosystem; Neotropic Ecozone; precipitation intensity; rainfall; trophic structure; Article; biomass; Central America; controlled study; detritivore; drought; flooding; food web; hydrology; microcosm; Neotropics; nonhuman; precipitation; predator; South America; trophic level; animal; biodiversity; Bromelia; climate change; ecosystem; flooding; food chain; Central America; South America; Animals; Biodiversity; Biomass; Bromelia; Climate Change; Droughts; Ecosystem; Floods; Food Chain; Fresh Water; Hydrology; South America |
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Changes in global and regional precipitation regimes are among the most pervasive components of climate change. Intensification of rainfall cycles, ranging from frequent downpours to severe droughts, could cause widespread, but largely unknown, alterations to trophic structure and ecosystem function. We conducted multi-site coordinated experiments to show how variation in the quantity and evenness of rainfall modulates trophic structure in 210 natural freshwater microcosms (tank bromeliads) across Central and South America (18°N to 29°S). The biomass of smaller organisms (detritivores) was higher under more stable hydrological conditions. Conversely, the biomass of predators was highest when rainfall was uneven, resulting in top-heavy biomass pyramids. These results illustrate how extremes of precipitation, resulting in localized droughts or flooding, can erode the base of freshwater food webs, with negative implications for the stability of trophic dynamics. © 2020, The Author(s). |
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Institute of Biological Sciences, Universidade Federal do Pará, Belém, PA, Brazil |
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Nature Research |
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20411723 (Issn) |
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EcoFoG @ webmaster @ |
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944 |
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Esquivel-Muelbert, A.; Phillips, O.L.; Brienen, R.J.W.; Fauset, S.; Sullivan, M.J.P.; Baker, T.R.; Chao, K.-J.; Feldpausch, T.R.; Gloor, E.; Higuchi, N.; Houwing-Duistermaat, J.; Lloyd, J.; Liu, H.; Malhi, Y.; Marimon, B.; Marimon Junior, B.H.; Monteagudo-Mendoza, A.; Poorter, L.; Silveira, M.; Torre, E.V.; Dávila, E.A.; del Aguila Pasquel, J.; Almeida, E.; Loayza, P.A.; Andrade, A.; Aragão, L.E.O.C.; Araujo-Murakami, A.; Arets, E.; Arroyo, L.; Aymard C, G.A.; Baisie, M.; Baraloto, C.; Camargo, P.B.; Barroso, J.; Blanc, L.; Bonal, D.; Bongers, F.; Boot, R.; Brown, F.; Burban, B.; Camargo, J.L.; Castro, W.; Moscoso, V.C.; Chave, J.; Comiskey, J.; Valverde, F.C.; da Costa, A.L.; Cardozo, N.D.; Di Fiore, A.; Dourdain, A.; Erwin, T.; Llampazo, G.F.; Vieira, I.C.G.; Herrera, R.; Honorio Coronado, E.; Huamantupa-Chuquimaco, I.; Jimenez-Rojas, E.; Killeen, T.; Laurance, S.; Laurance, W.; Levesley, A.; Lewis, S.L.; Ladvocat, K.L.L.M.; Lopez-Gonzalez, G.; Lovejoy, T.; Meir, P.; Mendoza, C.; Morandi, P.; Neill, D.; Nogueira Lima, A.J.; Vargas, P.N.; de Oliveira, E.A.; Camacho, N.P.; Pardo, G.; Peacock, J.; Peña-Claros, M.; Peñuela-Mora, M.C.; Pickavance, G.; Pipoly, J.; Pitman, N.; Prieto, A.; Pugh, T.A.M.; Quesada, C.; Ramirez-Angulo, H.; de Almeida Reis, S.M.; Rejou-Machain, M.; Correa, Z.R.; Bayona, L.R.; Rudas, A.; Salomão, R.; Serrano, J.; Espejo, J.S.; Silva, N.; Singh, J.; Stahl, C.; Stropp, J.; Swamy, V.; Talbot, J.; ter Steege, H.; Terborgh, J.; Thomas, R.; Toledo, M.; Torres-Lezama, A.; Gamarra, L.V.; van der Heijden, G.; van der Meer, P.; van der Hout, P.; Martinez, R.V.; Vieira, S.A.; Cayo, J.V.; Vos, V.; Zagt, R.; Zuidema, P.; Galbraith, D. |
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Title |
Tree mode of death and mortality risk factors across Amazon forests |
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Journal Article |
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2020 |
Publication |
Nature Communications |
Abbreviated Journal |
Nat. Commun. |
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11 |
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5515 |
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bioclimatology; carbon sink; ecological modeling; growth; holistic approach; mortality; mortality risk; risk factor; survival; trade-off; tropical forest; article; climate; controlled study; forest; growth rate; human; mortality rate; mortality risk; survival; biological model; biomass; Brazil; carbon sequestration; ecology; ecosystem; environmental monitoring; growth, development and aging; proportional hazards model; risk factor; tree; tropic climate; Amazonia; carbon dioxide; Biomass; Brazil; Carbon Dioxide; Carbon Sequestration; Ecology; Ecosystem; Environmental Monitoring; Forests; Models, Biological; Proportional Hazards Models; Risk Factors; Trees; Tropical Climate |
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The carbon sink capacity of tropical forests is substantially affected by tree mortality. However, the main drivers of tropical tree death remain largely unknown. Here we present a pan-Amazonian assessment of how and why trees die, analysing over 120,000 trees representing > 3800 species from 189 long-term RAINFOR forest plots. While tree mortality rates vary greatly Amazon-wide, on average trees are as likely to die standing as they are broken or uprooted—modes of death with different ecological consequences. Species-level growth rate is the single most important predictor of tree death in Amazonia, with faster-growing species being at higher risk. Within species, however, the slowest-growing trees are at greatest risk while the effect of tree size varies across the basin. In the driest Amazonian region species-level bioclimatic distributional patterns also predict the risk of death, suggesting that these forests are experiencing climatic conditions beyond their adaptative limits. These results provide not only a holistic pan-Amazonian picture of tree death but large-scale evidence for the overarching importance of the growth–survival trade-off in driving tropical tree mortality. © 2020, The Author(s). |
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Tropenbos International, Wageningen, Netherlands |
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Nature Research |
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Thomas, H.J.D.; Bjorkman, A.D.; Myers-Smith, I.H.; Elmendorf, S.C.; Kattge, J.; Diaz, S.; Vellend, M.; Blok, D.; Cornelissen, J.H.C.; Forbes, B.C.; Henry, G.H.R.; Hollister, R.D.; Normand, S.; Prevéy, J.S.; Rixen, C.; Schaepman-Strub, G.; Wilmking, M.; Wipf, S.; Cornwell, W.K.; Beck, P.S.A.; Georges, D.; Goetz, S.J.; Guay, K.C.; Rüger, N.; Soudzilovskaia, N.A.; Spasojevic, M.J.; Alatalo, J.M.; Alexander, H.D.; Anadon-Rosell, A.; Angers-Blondin, S.; te Beest, M.; Berner, L.T.; Björk, R.G.; Buchwal, A.; Buras, A.; Carbognani, M.; Christie, K.S.; Collier, L.S.; Cooper, E.J.; Elberling, B.; Eskelinen, A.; Frei, E.R.; Grau, O.; Grogan, P.; Hallinger, M.; Heijmans, M.M.P.D.; Hermanutz, L.; Hudson, J.M.G.; Johnstone, J.F.; Hülber, K.; Iturrate-Garcia, M.; Iversen, C.M.; Jaroszynska, F.; Kaarlejarvi, E.; Kulonen, A.; Lamarque, L.J.; Lantz, T.C.; Lévesque, E.; Little, C.J.; Michelsen, A.; Milbau, A.; Nabe-Nielsen, J.; Nielsen, S.S.; Ninot, J.M.; Oberbauer, S.F.; Olofsson, J.; Onipchenko, V.G.; Petraglia, A.; Rumpf, S.B.; Shetti, R.; Speed, J.D.M.; Suding, K.N.; Tape, K.D.; Tomaselli, M.; Trant, A.J.; Treier, U.A.; Tremblay, M.; Venn, S.E.; Vowles, T.; Weijers, S.; Wookey, P.A.; Zamin, T.J.; Bahn, M.; Blonder, B.; van Bodegom, P.M.; Bond-Lamberty, B.; Campetella, G.; Cerabolini, B.E.L.; Chapin, F.S., III; Craine, J.M.; Dainese, M.; Green, W.A.; Jansen, S.; Kleyer, M.; Manning, P.; Niinemets, Ü.; Onoda, Y.; Ozinga, W.A.; Peñuelas, J.; Poschlod, P.; Reich, P.B.; Sandel, B.; Schamp, B.S.; Sheremetiev, S.N.; de Vries, F.T. |
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Global plant trait relationships extend to the climatic extremes of the tundra biome |
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Journal Article |
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2020 |
Publication |
Nature Communications |
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Nat. Commun. |
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11 |
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1351 |
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biome; climate change; extreme event; global change; growth; interspecific interaction; plant community; tundra; article; plant community; prediction; tundra; warming; classification; climate; ecosystem; genetics; plant; plant development; Climate; Ecosystem; Plant Development; Plants; Tundra |
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The majority of variation in six traits critical to the growth, survival and reproduction of plant species is thought to be organised along just two dimensions, corresponding to strategies of plant size and resource acquisition. However, it is unknown whether global plant trait relationships extend to climatic extremes, and if these interspecific relationships are confounded by trait variation within species. We test whether trait relationships extend to the cold extremes of life on Earth using the largest database of tundra plant traits yet compiled. We show that tundra plants demonstrate remarkably similar resource economic traits, but not size traits, compared to global distributions, and exhibit the same two dimensions of trait variation. Three quarters of trait variation occurs among species, mirroring global estimates of interspecific trait variation. Plant trait relationships are thus generalizable to the edge of global trait-space, informing prediction of plant community change in a warming world. © 2020, Crown. |
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Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Postbus 94240, Amsterdam, 1090 GE, Netherlands |
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Nature Research |
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EcoFoG @ webmaster @ |
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947 |
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Duval, R.; Duplais, C. |
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Fluorescent natural products as probes and tracers in biology |
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2017 |
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Natural Product Reports |
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Natural Product Reports |
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34 |
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2 |
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161-193 |
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Covering: 1985 up to the end of 2016 Fluorescence is a remarkable property of many natural products in addition to their medicinal and biological values. Herein, we provide a review on these peculiar secondary metabolites to stimulate prospecting of them as original fluorescent tracers, endowed with unique photophysical properties and with applications in most fields of biology. The compounds are spectrally categorized (i.e. fluorescing from violet to the near infra-red) and further structurally classified within each category. Natural products selected for their high impact in modern fluorescence-based biological studies are highlighted throughout the article. Finally, we discuss aspects of chemical ecology where fluorescent natural products might have key evolutionary roles and thus open new research directions in the field. © 2017 The Royal Society of Chemistry. |
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CNRS, UMR 8172 EcoFoG (Ecologie des Forêts de Guyane), AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 23 avenue Pasteur, Cayenne, France |
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Export Date: 23 February 2017 |
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EcoFoG @ webmaster @ |
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736 |
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Steidinger, B.S.; Crowther, T.W.; Liang, J.; Van Nuland, M.E.; Werner, G.D.A.; Reich, P.B.; Nabuurs, G.; de-Miguel, S.; Zhou, M.; Picard, N.; Herault, B.; Zhao, X.; Zhang, C.; Routh, D.; Peay, K.G.; Abegg, M.; Adou Yao, C.Y.; Alberti, G.; Almeyda Zambrano, A.; Alvarez-Davila, E.; Alvarez-Loayza, P.; Alves, L.F.; Ammer, C.; Antón-Fernández, C.; Araujo-Murakami, A.; Arroyo, L.; Avitabile, V.; Aymard, G.; Baker, T.; Bałazy, R.; Banki, O.; Barroso, J.; Bastian, M.; Bastin, J.-F.; Birigazzi, L.; Birnbaum, P.; Bitariho, R.; Boeckx, P.; Bongers, F.; Bouriaud, O.; Brancalion, P.H.S.; Brandl, S.; Brearley, F.Q.; Brienen, R.; Broadbent, E.; Bruelheide, H.; Bussotti, F.; Cazzolla Gatti, R.; Cesar, R.; Cesljar, G.; Chazdon, R.; Chen, H.Y.H.; Chisholm, C.; Cienciala, E.; Clark, C.J.; Clark, D.; Colletta, G.; Condit, R.; Coomes, D.; Cornejo Valverde, F.; Corral-Rivas, J.J.; Crim, P.; Cumming, J.; Dayanandan, S.; de Gasper, A.L.; Decuyper, M.; Derroire, G.; DeVries, B.; Djordjevic, I.; Iêda, A.; Dourdain, A.; Obiang, N.L.E.; Enquist, B.; Eyre, T.; Fandohan, A.B.; Fayle, T.M.; Feldpausch, T.R.; Finér, L.; Fischer, M.; Fletcher, C.; Fridman, J.; Frizzera, L.; Gamarra, J.G.P.; Gianelle, D.; Glick, H.B.; Harris, D.; Hector, A.; Hemp, A.; Hengeveld, G.; Herbohn, J.; Herold, M.; Hillers, A.; Honorio Coronado, E.N.; Huber, M.; Hui, C.; Cho, H.; Ibanez, T.; Jung, I.; Imai, N.; Jagodzinski, A.M.; Jaroszewicz, B.; Johannsen, V.; Joly, C.A.; Jucker, T.; Karminov, V.; Kartawinata, K.; Kearsley, E.; Kenfack, D.; Kennard, D.; Kepfer-Rojas, S.; Keppel, G.; Khan, M.L.; Killeen, T.; Kim, H.S.; Kitayama, K.; Köhl, M.; Korjus, H.; Kraxner, F.; Laarmann, D.; Lang, M.; Lewis, S.; Lu, H.; Lukina, N.; Maitner, B.; Malhi, Y.; Marcon, E.; Marimon, B.S.; Marimon-Junior, B.H.; Marshall, A.R.; Martin, E.; Martynenko, O.; Meave, J.A.; Melo-Cruz, O.; Mendoza, C.; Merow, C.; Monteagudo Mendoza, A.; Moreno, V.; Mukul, S.A.; Mundhenk, P.; Nava-Miranda, M.G.; Neill, D.; Neldner, V.; Nevenic, R.; Ngugi, M.; Niklaus, P.; Oleksyn, J.; Ontikov, P.; Ortiz-Malavasi, E.; Pan, Y.; Paquette, A.; Parada-Gutierrez, A.; Parfenova, E.; Park, M.; Parren, M.; Parthasarathy, N.; Peri, P.L.; Pfautsch, S.; Phillips, O.; Piedade, M.T.; Piotto, D.; Pitman, N.C.A.; Polo, I.; Poorter, L.; Poulsen, A.D.; Poulsen, J.R.; Pretzsch, H.; Ramirez Arevalo, F.; Restrepo-Correa, Z.; Rodeghiero, M.; Rolim, S.; Roopsind, A.; Rovero, F.; Rutishauser, E.; Saikia, P.; Saner, P.; Schall, P.; Schelhaas, M.-J.; Schepaschenko, D.; Scherer-Lorenzen, M.; Schmid, B.; Schöngart, J.; Searle, E.; Seben, V.; Serra-Diaz, J.M.; Salas-Eljatib, C.; Sheil, D.; Shvidenko, A.; Silva-Espejo, J.; Silveira, M.; Singh, J.; Sist, P.; Slik, F.; Sonké, B.; Souza, A.F.; Stereńczak, K.; Svenning, J.-C.; Svoboda, M.; Targhetta, N.; Tchebakova, N.; Steege, H.; Thomas, R.; Tikhonova, E.; Umunay, P.; Usoltsev, V.; Valladares, F.; van der Plas, F.; Van Do, T.; Vasquez Martinez, R.; Verbeeck, H.; Viana, H.; Vieira, S.; von Gadow, K.; Wang, H.-F.; Watson, J.; Westerlund, B.; Wiser, S.; Wittmann, F.; Wortel, V.; Zagt, R.; Zawila-Niedzwiecki, T.; Zhu, Z.-X.; Zo-Bi, I.C.; GFBI consortium |
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Climatic controls of decomposition drive the global biogeography of forest-tree symbioses |
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Journal Article |
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2019 |
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Nature |
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Nature |
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569 |
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7756 |
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404-408 |
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Fungi |
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The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools 1,2 , sequester carbon 3,4 and withstand the effects of climate change 5,6 . Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species 7 , constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species. © 2019, The Author(s), under exclusive licence to Springer Nature Limited. |
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Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway |
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EcoFoG @ webmaster @ |
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872 |
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Brienen, R.J.W.; Phillips, O.L.; Feldpausch, T.R.; Gloor, E.; Baker, T.R.; Lloyd, J.; Lopez-Gonzalez, G.; Monteagudo-Mendoza, A.; Malhi, Y.; Lewis, S.L.; Vásquez Martinez, R.; Alexiades, M.; Álvarez Dávila, E.; Alvarez-Loayza, P.; Andrade, A.; Aragaõ, L.E.O.C.; Araujo-Murakami, A.; Arets, E.J.M.M.; Arroyo, L.; Aymard C., G.A.; Bánki, O.S.; Baraloto, C.; Barroso, J.; Bonal, D.; Boot, R.G.A.; Camargo, J.L.C.; Castilho, C.V.; Chama, V.; Chao, K.J.; Chave, J.; Comiskey, J.A.; Cornejo Valverde, F.; Da Costa, L.; De Oliveira, E.A.; Di Fiore, A.; Erwin, T.L.; Fauset, S.; Forsthofer, M.; Galbraith, D.R.; Grahame, E.S.; Groot, N.; Herault, B.; Higuchi, N.; Honorio Coronado, E.N.; Keeling, H.; Killeen, T.J.; Laurance, W.F.; Laurance, S.; Licona, J.; Magnussen, W.E.; Marimon, B.S.; Marimon-Junior, B.H.; Mendoza, C.; Neill, D.A.; Nogueira, E.M.; Núñez, P.; Pallqui Camacho, N.C.; Parada, A.; Pardo-Molina, G.; Peacock, J.; Penã-Claros, M.; Pickavance, G.C.; Pitman, N.C.A.; Poorter, L.; Prieto, A.; Quesada, C.A.; Ramírez, F.; Ramírez-Angulo, H.; Restrepo, Z.; Roopsind, A.; Rudas, A.; Salomaõ, R.P.; Schwarz, M.; Silva, N.; Silva-Espejo, J.E.; Silveira, M.; Stropp, J.; Talbot, J.; Ter Steege, H.; Teran-Aguilar, J.; Terborgh, J.; Thomas-Caesar, R.; Toledo, M.; Torello-Raventos, M.; Umetsu, R.K.; Van Der Heijden, G.M.F.; Van Der Hout, P.; Guimarães Vieira, I.C.; Vieira, S.A.; Vilanova, E.; Vos, V.A.; Zagt, R.J. |
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Title |
Long-term decline of the Amazon carbon sink |
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Journal Article |
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Year |
2015 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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519 |
Issue |
7543 |
Pages |
344-348 |
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Atmospheric carbon dioxide records indicate that the land surface has acted as a strong global carbon sink over recent decades, with a substantial fraction of this sink probably located in the tropics, particularly in the Amazon. Nevertheless, it is unclear how the terrestrial carbon sink will evolve as climate and atmospheric composition continue to change. Here we analyse the historical evolution of the biomass dynamics of the Amazon rainforest over three decades using a distributed network of 321 plots. While this analysis confirms that Amazon forests have acted as a long-term net biomass sink, we find a long-term decreasing trend of carbon accumulation. Rates of net increase in above-ground biomass declined by one-third during the past decade compared to the 1990s. This is a consequence of growth rate increases levelling off recently, while biomass mortality persistently increased throughout, leading to a shortening of carbon residence times. Potential drivers for the mortality increase include greater climate variability, and feedbacks of faster growth on mortality, resulting in shortened tree longevity. The observed decline of the Amazon sink diverges markedly from the recent increase in terrestrial carbon uptake at the global scale, and is contrary to expectations based on models. © 2015 2015 Macmillan Publishers Limited. |
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Centro de Investigación y Promoción Del Campesinado, C/Nicanor Gonzalo Salvatierra Nu 362Riberalta, Bolivia |
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Export Date: 1 April 2015 |
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EcoFoG @ webmaster @ |
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591 |
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Kunstler, G.; Falster, D.; Coomes, D.A.; Hui, F.; Kooyman, R.M.; Laughlin, D.C.; Poorter, L.; Vanderwel, M.; Vieilledent, G.; Wright, S.J.; Aiba, M.; Baraloto, C.; Caspersen, J.; Cornelissen, J.H.C.; Gourlet-Fleury, S.; Hanewinkel, M.; Herault, B.; Kattge, J.; Kurokawa, H.; Onoda, Y.; Peñuelas, J.; Poorter, H.; Uriarte, M.; Richardson, S.; Ruiz-Benito, P.; Sun, I.-F.; Ståhl, G.; Swenson, N.G.; Thompson, J.; Westerlund, B.; Wirth, C.; Zavala, M.A.; Zeng, H.; Zimmerman, J.K.; Zimmermann, N.E.; Westoby, M. |
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Title |
Plant functional traits have globally consistent effects on competition |
Type |
Journal Article |
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Year |
2016 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
529 |
Issue |
7585 |
Pages |
204-207 |
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Phenotypic traits and their associated trade-offs have been shown to have globally consistent effects on individual plant physiological functions, but how these effects scale up to influence competition, a key driver of community assembly in terrestrial vegetation, has remained unclear. Here we use growth data from more than 3 million trees in over 140,000 plots across the world to show how three key functional traits – wood density, specific leaf area and maximum height – consistently influence competitive interactions. Fast maximum growth of a species was correlated negatively with its wood density in all biomes, and positively with its specific leaf area in most biomes. Low wood density was also correlated with a low ability to tolerate competition and a low competitive effect on neighbours, while high specific leaf area was correlated with a low competitive effect. Thus, traits generate trade-offs between performance with competition versus performance without competition, a fundamental ingredient in the classical hypothesis that the coexistence of plant species is enabled via differentiation in their successional strategies. Competition within species was stronger than between species, but an increase in trait dissimilarity between species had little influence in weakening competition. No benefit of dissimilarity was detected for specific leaf area or wood density, and only a weak benefit for maximum height. Our trait-based approach to modelling competition makes generalization possible across the forest ecosystems of the world and their highly diverse species composition. © 2016 Macmillan Publishers Limited. All rights reserved. |
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Forestry and Forest Products Research Institute, Tsukuba, Japan |
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Cited By :1; Export Date: 29 January 2016 |
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EcoFoG @ webmaster @ |
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653 |
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Díaz, S.; Kattge, J.; Cornelissen, J.H.C.; Wright, I.J.; Lavorel, S.; Dray, S.; Reu, B.; Kleyer, M.; Wirth, C.; Colin Prentice, I.; Garnier, E.; Bönisch, G.; Westoby, M.; Poorter, H.; Reich, P.B.; Moles, A.T.; Dickie, J.; Gillison, A.N.; Zanne, A.E.; Chave, J.; Joseph Wright, S.; Sheremet’ev, S.N.; Jactel, H.; Baraloto, C.; Cerabolini, B.; Pierce, S.; Shipley, B.; Kirkup, D.; Casanoves, F.; Joswig, J.S.; Günther, A.; Falczuk, V.; Rüger, N.; Mahecha, M.D.; Gorné, L.D. |
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Title |
The global spectrum of plant form and function |
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Journal Article |
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2016 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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529 |
Issue |
7585 |
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167-171 |
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Earth is home to a remarkable diversity of plant forms and life histories, yet comparatively few essential trait combinations have proved evolutionarily viable in today’s terrestrial biosphere. By analysing worldwide variation in six major traits critical to growth, survival and reproduction within the largest sample of vascular plant species ever compiled, we found that occupancy of six-dimensional trait space is strongly concentrated, indicating coordination and trade-offs. Three-quarters of trait variation is captured in a two-dimensional global spectrum of plant form and function. One major dimension within this plane reflects the size of whole plants and their parts; the other represents the leaf economics spectrum, which balances leaf construction costs against growth potential. The global plant trait spectrum provides a backdrop for elucidating constraints on evolution, for functionally qualifying species and ecosystems, and for improving models that predict future vegetation based on continuous variation in plant form and function. |
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Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. |
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0028-0836 |
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654 |
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Fauset, S.; Johnson, M.O.; Gloor, M.; Baker, T.R.; Monteagudo M., A.; Brienen, R.J.W.; Feldpausch, T.R.; Lopez-Gonzalez, G.; Malhi, Y.; Ter Steege, H.; Pitman, N.C.A.; Baraloto, C.; Engel, J.; Petronelli, P.; Andrade, A.; Camargo, J.L.C.; Laurance, S.G.W.; Laurance, W.F.; Chave, J.; Allie, E.; Vargas, P.N.; Terborgh, J.W.; Ruokolainen, K.; Silveira, M.; Aymard C., G.A.; Arroyo, L.; Bonal, D.; Ramirez-Angulo, H.; Araujo-Murakami, A.; Neill, D.; Herault, B.; Dourdain, A.; Torres-Lezama, A.; Marimon, B.S.; Salomão, R.P.; Comiskey, J.A.; Réjou-Méchain, M.; Toledo, M.; Licona, J.C.; Alarcón, A.; Prieto, A.; Rudas, A.; Van Der Meer, P.J.; Killeen, T.J.; Marimon Junior, B.-H.; Poorter, L.; Boot, R.G.A.; Stergios, B.; Torre, E.V.; Costa, F.R.C.; Levis, C.; Schietti, J.; Souza, P.; Groot, N.; Arets, E.; Moscoso, V.C.; Castro, W.; Coronado, E.N.H.; Peña-Claros, M.; Stahl, C.; Barroso, J.; Talbot, J.; Vieira, I.C.G.; Van Der Heijden, G.; Thomas, R.; Vos, V.A.; Almeida, E.C.; Davila, E.Á.; Aragão, L.E.O.C.; Erwin, T.L.; Morandi, P.S.; De Oliveira, E.A.; Valadão, M.B.X.; Zagt, R.J.; Van Der Hout, P.; Loayza, P.A.; Pipoly, J.J.; Wang, O.; Alexiades, M.; Cerón, C.E.; Huamantupa-Chuquimaco, I.; Di Fiore, A.; Peacock, J.; Camacho, N.C.P.; Umetsu, R.K.; De Camargo, P.B.; Burnham, R.J.; Herrera, R.; Quesada, C.A.; Stropp, J.; Vieira, S.A.; Steininger, M.; Rodríguez, C.R.; Restrepo, Z.; Muelbert, A.E.; Lewis, S.L.; Pickavance, G.C.; Phillips, O.L. |
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Title |
Hyperdominance in Amazonian forest carbon cycling |
Type |
Journal Article |
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Year |
2015 |
Publication |
Nature Communications |
Abbreviated Journal |
Nature Communications |
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Volume |
6 |
Issue |
6857 |
Pages |
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While Amazonian forests are extraordinarily diverse, the abundance of trees is skewed strongly towards relatively few â € hyperdominantâ €™ species. In addition to their diversity, Amazonian trees are a key component of the global carbon cycle, assimilating and storing more carbon than any other ecosystem on Earth. Here we ask, using a unique data set of 530 forest plots, if the functions of storing and producing woody carbon are concentrated in a small number of tree species, whether the most abundant species also dominate carbon cycling, and whether dominant species are characterized by specific functional traits. We find that dominance of forest function is even more concentrated in a few species than is dominance of tree abundance, with only â ‰1% of Amazon tree species responsible for 50% of carbon storage and productivity. Although those species that contribute most to biomass and productivity are often abundant, species maximum size is also influential, while the identity and ranking of dominant species varies by function and by region. © 2015 Macmillan Publishers Limited. All rights reserved. |
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Instituto de Biologia, Universidade Estadual de CampinasCampinas, Brazil |
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Export Date: 18 May 2015 |
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EcoFoG @ webmaster @ |
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602 |
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