Results 11 to 20 of about 133 (93)

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

New Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ, Piñeiro R, Nicholls JA, Gaynor ML, Lewis GP, Fonseca Pezzini F, Dexter KG, Kidner C, Pennington RT, Twyford AD.   +9 more
europepmc   +2 more sources

Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change. [PDF]

Glob Chang Biol
The Brazilian Cerrado's forest structure relies disproportionately on just 30 hyperdominant tree species, which represent 50% of all individuals despite accounting for only 2% of species richness. This study evaluates their vulnerability under climate change scenarios for 2100.
Alvarez F, Marimon-Junior BH, Marimon BS, da Cruz WJA, Júnior NGR, Béu RG, da Conceição Bispo P, de Souza Medeiros A, Siqueira GM, Bueno ML, de Gois Aquino F, Guilherme FAG, Pinto JRR, Mews HA, Walter BMT, do Couto de Miranda S, Haidar RF, de Oliveira EL, Brandão RDF, Matricardi EAT, Munhoz CBR, de Souza Lima E, Carniello MA, da Cunha Bustamante MM, Morandi PS, de Oliveira EA, Finger Z, das Neves EC, Elias F, Menor IO, de Almeida Reis SM, Phillips O, Feldpausch TR.   +32 more
europepmc   +2 more sources

Mapping the density of giant trees in the Amazon. [PDF]

New Phytol
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
de Lima RB, da Silva DAS, Nunes MH, Bittencourt PRL, Groenendyk P, de Oliveira CP, Granato-Souza D, Caraciolo Ferreira RL, Aleixo da Silva JA, Aguirre-Gutiérrez J, Jackson T, de Matos Filho JR, Aparício PDS, da Silva JPG, de Toledo JJ, Guedes MC, de Almeida DRA, Higuchi N, Wagner FH, Ometto JP, Görgens EB.   +20 more
europepmc   +2 more sources

Multifaceted Assessment of Amazonian Tree Diversity Reveals Pervasive Impacts of Human Modification. [PDF]

Glob Chang Biol
Amazonian forests impacted by humans have a reduced and different group of tree species than those forests that have never been impacted. The trees present in forests impacted by humans also have different evolutionary histories and functional characteristics.
Berenguer E, Nunes CA, Aguirre-Gutiérrez J, Ferreira J, Malhi Y, Aragão LEOC, Esquivel-Muelbert A, Figueiredo AES, Hawes JE, Joly CA, Quesada CA, de Seixas MMM, Vieira I, Barlow J.   +13 more
europepmc   +2 more sources

Large‐scale impacts of selective logging on canopy tree beta‐diversity in the Brazilian Amazon

Journal of Applied Ecology, Volume 60, Issue 6, Page 1181-1193, June 2023., 2023
Minimal impacts on tree beta‐diversity across large spatial scales points towards the retention of substantial conservation value in logged tropical forests. Strong subtractive heterogenization in very large trees indicates the breakdown of broad scale patterns of composition with potential negative consequences for recruitment processes, fauna reliant
Christopher G. Bousfield, Mike R. Massam, Carlos A. Peres, David P. Edwards   +3 more
wiley   +1 more source

Variation of non‐structural carbohydrates across the fast–slow continuum in Amazon Forest canopy trees

Functional Ecology, Volume 36, Issue 2, Page 341-355, February 2022., 2022
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Tropical tree species span a range of life‐history strategies within a fast–slow continuum. The position of a species within this continuum is thought to reflect a negative relationship between growth and storage, with fast‐growing species allocating ...
Caroline Signori‐Müller, Rafael S. Oliveira, Julia Valentim Tavares, Francisco Carvalho Diniz, Martin Gilpin, Fernanda de V. Barros, Manuel J. Marca Zevallos, Carlos A. Salas Yupayccana, Alex Nina, Mauro Brum, Timothy R. Baker, Eric G. Cosio, Yadvinder Malhi, Abel Monteagudo Mendoza, Oliver L. Phillips, Lucy Rowland, Norma Salinas, Rodolfo Vasquez, Maurizio Mencuccini, David Galbraith   +19 more
wiley   +1 more source

Effects of forest degradation on Amazonian ferns in a land‐bridge island system as revealed by non‐specialist inventories

Ecological Solutions and Evidence, Volume 3, Issue 1, January–March 2022., 2022
Tropical forests have been rapidly deforested and degradation worldwide has outpaced biodiversity field sampling. We here show that a simple sampling protocol carried out by a non‐specialist can lead to inexpensive and highly reliable ecological data.
Gabriela Zuquim, Maíra Benchimol, Rafael Tonon, Carlos A. Peres, Danielle Storck‐Tonon   +4 more
wiley   +1 more source

Observações preliminares sobre a periodicidade e taxa de crescimento em árvores tropicais [PDF]

Acta Amazonica, 1988
Resultados preliminares sobre a periodicidade e taxa de crescimento de Cardeiro (Scleronema micranthum Ducke, Bombacaceae) são apresentados. Observou-se ama periodicidade de crescimento. As taxas de incremento são correlacionadas aos resultados referidos
Roland E. Vetter, Paulo César Botosso
doaj   +1 more source

"Gaps of deciduousness": cyclical gaps in tropical forests "Clareiras de deciduidade": clareiras cíclicas em florestas tropicais

Scientia Agricola, 2009
A new concept named "gaps of deciduousness" is introduced for the momentary annual bright places that appear under tropical and subtropical deciduous canopy trees when they are leafless, a cyclical kind of gap totally different from treefall gaps, whose ...
Sergius Gandolfi, Carlos Alfredo Joly, Hermógenes de Freitas Leitão Filho   +2 more
doaj   +1 more source

Idade e Ritmo de Crescimento do Tronco de Árvores de Espécies da Floresta Natural do Pantanal Matogrossense, MS Age and Growth Rhythm of Tree Species Natural From Pantanal Matogrossense, MS

Pesquisa Florestal Brasileira, 2011
Informações sobre a influência de fatores ambientais na taxa de crescimento das espécies arbóreas são  importantes para o manejo de florestas naturais ou plantadas, sendo os anéis de crescimento uma  ferramenta adequada para essas análises.  Objetivou-se
Patricia Póvoa de Mattos, Rudi Arno Seitz, Suzana Maria de Salis   +2 more
doaj   +1 more source