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    We will mail you new results for this query: q=Honorio Coronado
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Rarity of monodominance in hyperdiverse Amazonian forests
Steege, Hans Ter; Henkel, Terry W. ; Helal, Nora ; Marimon, Beatriz S. ; Marimon-Junior, Ben Hur ; Huth, Andreas ; Groeneveld, Jürgen ; Sabatier, Daniel ; Souza Coelho, Luiz de; Andrade Lima Filho, Diogenes de; Salomão, Rafael P. ; Amaral, Iêda Leão ; Almeida Matos, Francisca Dionízia de; Castilho, Carolina V. ; Phillips, Oliver L. ; Guevara, Juan Ernesto ; Jesus Veiga Carim, Marcelo de; Cárdenas López, Dairon ; Magnusson, William E. ; Wittmann, Florian ; Irume, Mariana Victória ; Martins, Maria Pires ; Silva Guimarães, José Renan da; Molino, Jean François ; Bánki, Olaf S. ; Piedade, Maria Teresa Fernandez ; Pitman, Nigel C.A. ; Mendoza, Abel Monteagudo ; Ramos, José Ferreira ; Luize, Bruno Garcia ; Moraes de Leão Novo, Evlyn Márcia ; Núñez Vargas, Percy ; Silva, Thiago Sanna Freire ; Venticinque, Eduardo Martins ; Manzatto, Angelo Gilberto ; Reis, Neidiane Farias Costa ; Terborgh, John ; Casula, Katia Regina ; Honorio Coronado, Euridice N. ; Montero, Juan Carlos ; Feldpausch, Ted R. ; Duque, Alvaro ; Costa, Flávia R.C. ; Arboleda, Nicolás Castaño ; Schöngart, Jochen ; Killeen, Timothy J. ; Vasquez, Rodolfo ; Mostacedo, Bonifacio ; Demarchi, Layon O. ; Assis, Rafael L. ; Baraloto, Chris ; Engel, Julien ; Petronelli, Pascal ; Castellanos, Hernán ; Medeiros, Marcelo Brilhante de; Quaresma, Adriano ; Simon, Marcelo Fragomeni ; Andrade, Ana ; Camargo, José Luís ; Laurance, Susan G.W. ; Laurance, William F. ; Rincón, Lorena M. ; Schietti, Juliana ; Sousa, Thaiane R. ; Sousa Farias, Emanuelle de; Lopes, Maria Aparecida ; Magalhães, José Leonardo Lima ; Mendonça Nascimento, Henrique Eduardo ; Lima de Queiroz, Helder ; Aymard C, Gerardo A. ; Brienen, Roel ; Revilla, Juan David Cardenas ; Vieira, Ima Célia Guimarães ; Cintra, Bruno Barçante Ladvocat ; Stevenson, Pablo R. ; Feitosa, Yuri Oliveira ; Duivenvoorden, Joost F. ; Mogollón, Hugo F. ; Araujo-Murakami, Alejandro ; Ferreira, Leandro Valle ; Lozada, José Rafael ; Comiskey, James A. ; Toledo, José Julio de; Damasco, Gabriel ; Dávila, Nállarett ; Draper, Freddie ; García-Villacorta, Roosevelt ; Lopes, Aline ; Vicentini, Alberto ; Alonso, Alfonso ; Dallmeier, Francisco ; Gomes, Vitor H.F. ; Lloyd, Jon ; Neill, David ; Aguiar, Daniel Praia Portela de; Arroyo, Luzmila ; Carvalho, Fernanda Antunes ; Souza, Fernanda Coelho de; Amaral, Dário Dantas do; Feeley, Kenneth J. ; Gribel, Rogerio ; Pansonato, Marcelo Petratti ; Barlow, Jos ; Berenguer, Erika ; Ferreira, Joice ; Fine, Paul V.A. ; Guedes, Marcelino Carneiro ; Jimenez, Eliana M. ; Licona, Juan Carlos ; Peñuela Mora, Maria Cristina ; Villa, Boris ; Cerón, Carlos ; Maas, Paul ; Silveira, Marcos ; Stropp, Juliana ; Thomas, Raquel ; Baker, Tim R. ; Daly, Doug ; Dexter, Kyle G. ; Huamantupa-Chuquimaco, Isau ; Milliken, William ; Pennington, Toby ; Ríos Paredes, Marcos ; Fuentes, Alfredo ; Klitgaard, Bente ; Pena, José Luis Marcelo ; Peres, Carlos A. ; Silman, Miles R. ; Tello, J.S. ; Chave, Jerome ; Cornejo Valverde, Fernando ; Fiore, Anthony Di; Hilário, Renato Richard ; Phillips, Juan Fernando ; Rivas-Torres, Gonzalo ; Andel, Tinde R. van; Hildebrand, Patricio von; Noronha, Janaína Costa ; Barbosa, Edelcilio Marques ; Barbosa, Flávia Rodrigues ; Matos Bonates, Luiz Carlos de; Sá Carpanedo, Rainiellen de; Dávila Doza, Hilda Paulette ; Fonty, Émile ; GómeZárate Z, Ricardo ; Gonzales, Therany ; Gallardo Gonzales, George Pepe ; Hoffman, Bruce ; Junqueira, André Braga ; Malhi, Yadvinder ; Andrade Miranda, Ires Paula de; Pinto, Linder Felipe Mozombite ; Prieto, Adriana ; Jesus Rodrigues, Domingos de; Rudas, Agustín ; Ruschel, Ademir R. ; Silva, Natalino ; Vela, César I.A. ; Vos, Vincent Antoine ; Zent, Egleé L. ; Zent, Stanford ; Weiss Albuquerque, Bianca ; Cano, Angela ; Carrero Márquez, Yrma Andreina ; Correa, Diego F. ; Costa, Janaina Barbosa Pedrosa ; Flores, Bernardo Monteiro ; Galbraith, David ; Holmgren, Milena ; Kalamandeen, Michelle ; Nascimento, Marcelo Trindade ; Oliveira, Alexandre A. ; Ramirez-Angulo, Hirma ; Rocha, Maira ; Scudeller, Veridiana Vizoni ; Sierra, Rodrigo ; Tirado, Milton ; Umaña Medina, Maria Natalia ; Heijden, Geertje van der; Vilanova Torre, Emilio ; Vriesendorp, Corine ; Wang, Ophelia ; Young, Kenneth R. ; Ahuite Reategui, Manuel Augusto ; Baider, Cláudia ; Balslev, Henrik ; Cárdenas, Sasha ; Casas, Luisa Fernanda ; Farfan-Rios, William ; Ferreira, Cid ; Linares-Palomino, Reynaldo ; Mendoza, Casimiro ; Mesones, Italo ; Torres-Lezama, Armando ; Giraldo, Ligia Estela Urrego ; Villarroel, Daniel ; Zagt, Roderick ; Alexiades, Miguel N. ; Oliveira, Edmar Almeida de; Garcia-Cabrera, Karina ; Hernandez, Lionel ; Palacios Cuenca, Walter ; Pansini, Susamar ; Pauletto, Daniela ; Ramirez Arevalo, Freddy ; Sampaio, Adeilza Felipe ; Valderrama Sandoval, Elvis H. ; Valenzuela Gamarra, Luis ; Levesley, Aurora ; Pickavance, Georgia ; Melgaço, Karina - \ 2019
Scientific Reports 9 (2019). - ISSN 2045-2322

Tropical forests are known for their high diversity. Yet, forest patches do occur in the tropics where a single tree species is dominant. Such "monodominant" forests are known from all of the main tropical regions. For Amazonia, we sampled the occurrence of monodominance in a massive, basin-wide database of forest-inventory plots from the Amazon Tree Diversity Network (ATDN). Utilizing a simple defining metric of at least half of the trees ≥ 10 cm diameter belonging to one species, we found only a few occurrences of monodominance in Amazonia, and the phenomenon was not significantly linked to previously hypothesized life history traits such wood density, seed mass, ectomycorrhizal associations, or Rhizobium nodulation. In our analysis, coppicing (the formation of sprouts at the base of the tree or on roots) was the only trait significantly linked to monodominance. While at specific locales coppicing or ectomycorrhizal associations may confer a considerable advantage to a tree species and lead to its monodominance, very few species have these traits. Mining of the ATDN dataset suggests that monodominance is quite rare in Amazonia, and may be linked primarily to edaphic factors.

Can timber provision from Amazonian production forests be sustainable?
Piponiot, Camille ; Rödig, Edna ; Putz, Francis E. ; Rutishauser, Ervan ; Sist, Plinio ; Ascarrunz, Nataly ; Blanc, Lilian ; Derroire, Géraldine ; Descroix, Laurent ; Guedes, Marcelino Carneiro ; Coronado, Euridice Honorio ; Huth, Andreas ; Kanashiro, Milton ; Licona, Juan Carlos ; Mazzei, Lucas ; Oliveira, Marcus Vinicio Neves D'; Peña-Claros, Marielos ; Rodney, Ken ; Shenkin, Alexander ; Souza, Cintia Rodrigues De; Vidal, Edson ; West, Thales A.P. ; Wortel, Verginia ; Hérault, Bruno - \ 2019
Environmental Research Letters 14 (2019)6. - ISSN 1748-9318
Amazonia - disturbance - ecosystem recovery - macroecology - Selective logging - tropical forestry

Around 30 Mm3 of sawlogs are extracted annually by selective logging of natural production forests in Amazonia, Earth's most extensive tropical forest. Decisions concerning the management of these production forests will be of major importance for Amazonian forests' fate. To date, no regional assessment of selective logging sustainability supports decision-making. Based on data from 3500 ha of forest inventory plots, our modelling results show that the average periodic harvests of 20 m3 ha-1 will not recover by the end of a standard 30 year cutting cycle. Timber recovery within a cutting cycle is enhanced by commercial acceptance of more species and with the adoption of longer cutting cycles and lower logging intensities. Recovery rates are faster in Western Amazonia than on the Guiana Shield. Our simulations suggest that regardless of cutting cycle duration and logging intensities, selectively logged forests are unlikely to meet timber demands over the long term as timber stocks are predicted to steadily decline. There is thus an urgent need to develop an integrated forest resource management policy that combines active management of production forests with the restoration of degraded and secondary forests for timber production. Without better management, reduced timber harvests and continued timber production declines are unavoidable.

Estimating aboveground net biomass change for tropical and subtropical forests: refinement of IPCC default rates using forest plot data
Requena Suarez, Daniela ; Rozendaal, Danaë M.A. ; Sy, Veronique De; Phillips, Oliver L. ; Alvarez‐Dávila, Esteban ; Anderson‐teixeira, Kristina ; Araujo‐murakami, Alejandro ; Arroyo, Luzmila ; Baker, Timothy R. ; Bongers, Frans ; Brienen, Roel J.W. ; Carter, Sarah ; Cook‐Patton, Susan C. ; Feldpausch, Ted R. ; Griscom, Bronson W. ; Harris, Nancy ; Hérault, Bruno ; Honorio Coronado, Eurídice N. ; Leavitt, Sara M. ; Lewis, Simon L. ; Marimon, Beatriz S. ; Monteagudo Mendoza, Abel ; N'dja, Justin Kassi ; N'guessan, Anny Estelle ; Poorter, Lourens ; Qie, Lan ; Rutishauser, Ervan ; Sist, Plinio ; Sonké, Bonaventure ; Sullivan, Martin J.P. ; Vilanova, Emilio ; Wang, Maria M.H. ; Martius, Christopher ; Herold, Martin - \ 2019
Global Change Biology 25 (2019)11. - ISSN 1354-1013 - p. 3609 - 3624.
As countries advance in greenhouse gas (GHG) accounting for climate change mitigation, consistent estimates of aboveground net biomass change (∆AGB) are needed. Countries with limited forest monitoring capabilities in the tropics and subtropics rely on IPCC 2006 default ∆AGB rates, which are values per ecological zone, per continent. Similarly, research on forest biomass change at large scale also make use of these rates. IPCC 2006 default rates come from a handful of studies, provide no uncertainty indications, and do not distinguish between older secondary forests and old‐growth forests. As part of the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, we incorporate ∆AGB data available from 2006 onwards, comprising 176 chronosequences in secondary forests and 536 permanent plots in old‐growth and managed/logged forests located in 42 countries in Africa, North and South America, and Asia. We generated ∆AGB rate estimates for younger secondary forests (≤20 years), older secondary forests (>20 years and up to 100 years) and old‐growth forests, and accounted for uncertainties in our estimates. In tropical rainforests, for which data availability was the highest, our ∆AGB rate estimates ranged from 3.4 (Asia) to 7.6 (Africa) Mg ha‐1 yr‐1 in younger secondary forests, from 2.3 (North and South Ameri09ca) to 3.5 (Africa) Mg ha‐1 yr‐1 in older secondary forests, and 0.7 (Asia) to 1.3 (Africa) Mg ha‐1 yr‐1 in old‐growth forests. We provide a rigorous and traceable refinement of the IPCC 2006 default rates in tropical and subtropical ecological zones, and identify which areas require more research on ∆AGB. In this respect, this study should be considered as an important step towards quantifying the role of tropical and subtropical forests as carbon sinks with higher accuracy; our new rates can be used for large‐scale GHG accounting by governmental bodies, non‐governmental organisations and in scientific research.
Impacts of Mauritia flexuosa degradation on the carbon stocks of freshwater peatlands in the Pastaza-Marañón river basin of the Peruvian Amazon
Bhomia, Rupesh Kumar ; Lent, Jeffrey van; Grandez Rios, Julio M. ; Hergoualc’h, Kristell ; Honorio Coronado, Eurídice N. ; Murdiyarso, Daniel - \ 2019
Mitigation and Adaptation Strategies for Global Change 24 (2019)4. - ISSN 1381-2386 - p. 645 - 668.
Amazon basin - Forest degradation - Peat swamp forest - River dynamics - Soil carbon

Tropical peat swamp forests (PSF) are characterized by high quantities of carbon (C) stored as organic soil deposits due to waterlogged conditions which slows down decomposition. Globally, Peru has one of the largest expanse of tropical peatlands, located primarily within the Pastaza-Marañón river basin in the Northwestern Peru. Peatland forests in Peru are dominated by a palm species—Mauritia flexuosa, and M. flexuosa-dominated forests cover ~ 80% of total peatland area and store ~ 2.3 Pg C. However, hydrologic alterations, land cover change, and anthropogenic disturbances could lead to PSF’s degradation and loss of valuable ecosystem services. Therefore, evaluation of degradation impacts on PSF’s structure, biomass, and overall C stocks could provide an estimate of potential C losses into the atmosphere as greenhouse gases (GHG) emissions. This study was carried out in three regions within Pastaza-Marañón river basin to quantify PSF’s floristic composition and degradation status and total ecosystem C stocks. There was a tremendous range in C stocks (Mg C ha −1 ) in various ecosystem pools—vegetation (45.6–122.5), down woody debris (2.1–23.1), litter (2.3–7.8), and soil (top 1 m; 109–594). Mean ecosystem C stocks accounting for the top 1 m soil were 400, 570, and 330 Mg C ha −1 in Itaya, Tigre, and Samiria river basins, respectively. Considering the entire soil depth, mean ecosystem C stocks were 670, 1160, and 330 Mg C ha −1 in Itaya, Tigre, and Samiria river basins, respectively. Floristic composition and calcium to Magnesium (Ca/Mg) ratio of soil profile offered evidence of a site undergoing vegetational succession and transitioning from minerotrophic to ombrotrophic system. Degradation ranged from low to high levels of disturbance with no significant difference between regions. Increased degradation tended to decrease vegetation and forest floor C stocks and was significantly correlated to reduced M. flexuosa biomass C stocks. Long-term studies are needed to understand the linkages between M. flexuosa harvest and palm swamp forest C stocks; however, river dynamics are important natural drivers influencing forest succession and transition in this landscape.

Species Distribution Modelling: Contrasting presence-only models with plot abundance data
Gomes, Vitor H.F. ; Ijff, Stéphanie D. ; Raes, Niels ; Amaral, Iêda Leão ; Salomão, Rafael P. ; Coelho, Luiz De Souza ; Matos, Francisca Dionízia De Almeida ; Castilho, Carolina V. ; Filho, Diogenes De Andrade Lima ; López, Dairon Cárdenas ; Guevara, Juan Ernesto ; Magnusson, William E. ; Phillips, Oliver L. ; Wittmann, Florian ; Carim, Marcelo De Jesus Veiga ; Martins, Maria Pires ; Irume, Mariana Victória ; Sabatier, Daniel ; Molino, Jean François ; Bánki, Olaf S. ; Guimarães, José Renan Da Silva ; Pitman, Nigel C.A. ; Piedade, Maria Teresa Fernandez ; Mendoza, Abel Monteagudo ; Luize, Bruno Garcia ; Venticinque, Eduardo Martins ; de Leão Novo, E.M.M. ; Vargas, Percy Núñez ; Silva, Thiago Sanna Freire ; Manzatto, Angelo Gilberto ; Terborgh, John ; Reis, Neidiane Farias Costa ; Montero, Juan Carlos ; Montero, Juan Carlos ; Casula, Katia Regina ; Marimon, Beatriz S. ; Marimon, Ben Hur ; Honorio Coronado, Euridice N. ; Feldpausch, Ted R. ; Duque, Alvaro ; Zartman, Charles Eugene ; Arboleda, Nicolás Castaño ; Killeen, Timothy J. ; Mostacedo, Bonifacio ; Vasquez, Rodolfo ; Schöngart, Jochen ; Assis, Rafael L. ; Medeiros, Marcelo Brilhante ; Simon, Marcelo Fragomeni ; Andrade, Ana ; Laurance, William F. ; Camargo, José Luís ; Demarchi, Layon O. ; Laurance, Susan G.W. ; Farias, Emanuelle De Sousa ; Nascimento, Henrique Eduardo Mendonça ; Revilla, Juan David Cardenas ; Quaresma, Adriano ; Costa, Flavia R.C. ; Vieira, Ima Célia Guimarães ; Cintra, Bruno Barçante Ladvocat ; Cintra, Bruno Barçante Ladvocat ; Castellanos, Hernán ; Brienen, Roel ; Stevenson, Pablo R. ; Feitosa, Yuri ; Duivenvoorden, Joost F. ; Aymard, Gerardo A.C. ; Mogollón, Hugo F. ; Targhetta, Natalia ; Comiskey, James A. ; Vicentini, Alberto ; Lopes, Aline ; Damasco, Gabriel ; Dávila, Nállarett ; García-Villacorta, Roosevelt ; Levis, Carolina ; Schietti, Juliana ; Souza, Priscila ; Emilio, Thaise ; Alonso, Alfonso ; Neill, David ; Dallmeier, Francisco ; Ferreira, Leandro Valle ; Araujo-Murakami, Alejandro ; Praia, Daniel ; Amaral, Dário Dantas Do; Carvalho, Fernanda Antunes ; Souza, Fernanda Coelho De - \ 2018
Scientific Reports 8 (2018)1. - ISSN 2045-2322
Species distribution models (SDMs) are widely used in ecology and conservation. Presence-only SDMs such as MaxEnt frequently use natural history collections (NHCs) as occurrence data, given their huge numbers and accessibility. NHCs are often spatially biased which may generate inaccuracies in SDMs. Here, we test how the distribution of NHCs and MaxEnt predictions relates to a spatial abundance model, based on a large plot dataset for Amazonian tree species, using inverse distance weighting (IDW). We also propose a new pipeline to deal with inconsistencies in NHCs and to limit the area of occupancy of the species. We found a significant but weak positive relationship between the distribution of NHCs and IDW for 66% of the species. The relationship between SDMs and IDW was also significant but weakly positive for 95% of the species, and sensitivity for both analyses was high. Furthermore, the pipeline removed half of the NHCs records. Presence-only SDM applications should consider this limitation, especially for large biodiversity assessments projects, when they are automatically generated without subsequent checking. Our pipeline provides a conservative estimate of a species' area of occupancy, within an area slightly larger than its extent of occurrence, compatible to e.g. IUCN red list assessments.
Seasonal drought limits tree species across the Neotropics
Esquivel-Muelbert, Adriane ; Baker, Timothy R. ; Dexter, Kyle G. ; Lewis, Simon L. ; Steege, Hans ter; Lopez-Gonzalez, Gabriela ; Monteagudo Mendoza, Abel ; Brienen, Roel ; Feldpausch, Ted R. ; Pitman, Nigel ; Alonso, Alfonso ; Heijden, Geertje van der; Peña-Claros, Marielos ; Ahuite, Manuel ; Alexiaides, Miguel ; Álvarez Dávila, Esteban ; Murakami, Alejandro Araujo ; Arroyo, Luzmila ; Aulestia, Milton ; Balslev, Henrik ; Barroso, Jorcely ; Boot, Rene ; Cano, Angela ; Chama Moscoso, Victor ; Comiskey, James A. ; Cornejo, Fernando ; Dallmeier, Francisco ; Daly, Douglas C. ; Dávila, Nallarett ; Duivenvoorden, Joost F. ; Duque Montoya, Alvaro Javier ; Erwin, Terry ; Fiore, Anthony Di; Fredericksen, Todd ; Fuentes, Alfredo ; García-Villacorta, Roosevelt ; Gonzales, Therany ; Guevara Andino, Juan Ernesto ; Honorio Coronado, Euridice N. ; Huamantupa-Chuquimaco, Isau ; Killeen, Timothy J. ; Malhi, Yadvinder ; Mendoza, Casimiro ; Mogollón, Hugo ; Jørgensen, Peter Møller ; Montero, Juan Carlos ; Mostacedo, Bonifacio ; Nauray, William ; Neill, David ; Vargas, Percy Núñez ; Palacios, Sonia ; Palacios Cuenca, Walter ; Pallqui Camacho, Nadir Carolina ; Peacock, Julie ; Phillips, Juan Fernando ; Pickavance, Georgia ; Quesada, Carlos Alberto ; Ramírez-Angulo, Hirma ; Restrepo, Zorayda ; Reynel Rodriguez, Carlos ; Paredes, Marcos Ríos ; Sierra, Rodrigo ; Silveira, Marcos ; Stevenson, Pablo ; Stropp, Juliana ; Terborgh, John ; Tirado, Milton ; Toledo, Marisol ; Torres-Lezama, Armando ; Umaña, María Natalia ; Urrego, Ligia Estela ; Vasquez Martinez, Rodolfo ; Gamarra, Luis Valenzuela ; Vela, César I.A. ; Vilanova Torre, Emilio ; Vos, Vincent ; Hildebrand, Patricio von; Vriesendorp, Corine ; Wang, Ophelia ; Young, Kenneth R. ; Zartman, Charles Eugene ; Phillips, Oliver L. - \ 2017
Ecography 40 (2017)5. - ISSN 0906-7590 - p. 618 - 629.
Within the tropics, the species richness of tree communities is strongly and positively associated with precipitation. Previous research has suggested that this macroecological pattern is driven by the negative effect of water-stress on the physiological processes of most tree species. This implies that the range limits of inventory plots of closed canopy forest distributed across the western Neotropics taxa are defined by their ability to occur under dry conditions, and thus in terms of species distributions predicts a nested pattern of taxa distribution from wet to dry areas. However, this 'dry-tolerance' hypothesis has yet to be adequately tested at large spatial and taxonomic scales. Here, using a dataset of 531 we investigated how precipitation, evaluated both as mean annual precipitation and as the maximum climatological water deficit, influences the distribution of tropical tree species, genera and families. We find that the distributions of tree taxa are indeed nested along precipitation gradients in the western Neotropics. Taxa tolerant to seasonal drought are disproportionally widespread across the precipitation gradient, with most reaching even the wettest climates sampled; however, most taxa analysed are restricted to wet areas. Our results suggest that the 'dry tolerance' hypothesis has broad applicability in the world's most species-rich forests. In addition, the large number of species restricted to wetter conditions strongly indicates that an increased frequency of drought could severely threaten biodiversity in this region. Overall, this study establishes a baseline for exploring how tropical forest tree composition may change in response to current and future environmental changes in this region.
Phylogenetic diversity of Amazonian tree communities
Honorio Coronado, E.N. ; Dexter, K.G. ; Pennington, R.T. ; Chave, Jérôme ; Lewis, S.L. ; Alexiades, M.N. ; Alvarez, Esteban ; Alves de Oliveira, Atila ; Amaral, J.L. ; Araujo-Murakami, Alejandro ; Arets, E.J.M.M. - \ 2015
Diversity and Distributions 21 (2015)11. - ISSN 1366-9516 - p. 1295 - 1307.
Amazon basin - Eudicots - Magnoliids - Monocots - Phylogenetic diversity - Species richness

Aim: To examine variation in the phylogenetic diversity (PD) of tree communities across geographical and environmental gradients in Amazonia. Location: Two hundred and eighty-three c. 1 ha forest inventory plots from across Amazonia. Methods: We evaluated PD as the total phylogenetic branch length across species in each plot (PDss), the mean pairwise phylogenetic distance between species (MPD), the mean nearest taxon distance (MNTD) and their equivalents standardized for species richness (ses.PDss, ses.MPD, ses.MNTD). We compared PD of tree communities growing (1) on substrates of varying geological age; and (2) in environments with varying ecophysiological barriers to growth and survival. Results: PDss is strongly positively correlated with species richness (SR), whereas MNTD has a negative correlation. Communities on geologically young- and intermediate-aged substrates (western and central Amazonia respectively) have the highest SR, and therefore the highest PDss and the lowest MNTD. We find that the youngest and oldest substrates (the latter on the Brazilian and Guiana Shields) have the highest ses.PDss and ses.MNTD. MPD and ses.MPD are strongly correlated with how evenly taxa are distributed among the three principal angiosperm clades and are both highest in western Amazonia. Meanwhile, seasonally dry tropical forest (SDTF) and forests on white sands have low PD, as evaluated by any metric. Main conclusions: High ses.PDss and ses.MNTD reflect greater lineage diversity in communities. We suggest that high ses.PDss and ses.MNTD in western Amazonia results from its favourable, easy-to-colonize environment, whereas high values in the Brazilian and Guianan Shields may be due to accumulation of lineages over a longer period of time. White-sand forests and SDTF are dominated by close relatives from fewer lineages, perhaps reflecting ecophysiological barriers that are difficult to surmount evolutionarily. Because MPD and ses.MPD do not reflect lineage diversity per se, we suggest that PDss, ses.PDss and ses.MNTD may be the most useful diversity metrics for setting large-scale conservation priorities.

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