Results 11 to 20 of about 130 (88)

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

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

DENDROMETRIA DE ESSÊNCIAS NATIVAS

Revista do Instituto Florestal, 1992
A dendrometria no Brasil tem sido aplicada predominantemente em inventários florestais, com vistas à exploração de madeira. Assim sendo, as medições têm sido restritas ao DAP e altura das árvores, determinantes do volume de madeira comercial.
Giselda Durigan, Marco Antonio de Oliveira Garrido   +1 more
doaj   +1 more source

MÉTODOS E TÉCNICAS DE DIAGNOSE DE IDENTIFICAÇÃO DOS ANÉIS DE CRESCIMENTO DE ÁRVORES TROPICAIS [PDF]

Floresta e Ambiente, 2023
RESUMO Para análise do crescimento do xilema de espécies tropicais é necessário muitas vezes lançar mão de ferramentas que auxiliam na identificação precisa dos anéis de crescimento.
Gilmara Pires de Moura Palermo, João Vicente de Figueiredo Latorraca, Heber dos Santos Abreu   +2 more
doaj  

PADRÕES DE MORTALIDADE DE ÁRVORES EM UMA MATA PLUVIAL ATLÂNTICA EM LINHARES, ES

Revista do Instituto Florestal, 1992
Neste estudo foi feita uma caracterização das árvores mortas em três parcelas de floresta de alta de terra firme, duas em áreas sem registros de alterações e a outra em local com evidências de alterações antrópicas.
Paulo Inácio K. L. Prado, Vera Lex Engel, Flávio Gandara Mendes   +2 more
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