Results 61 to 70 of about 40,202 (169)

Mapping the density of giant trees in the Amazon

open access: yesNew Phytologist, Volume 249, Issue 1, Page 152-168, January 2026.
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 ...
Robson Borges de Lima   +20 more
wiley   +1 more source

Aptidão agrícola dos solos do Estado do Tocantins. [PDF]

open access: yes, 2011
Para caracterizacao dos solos do Estado do Tocantins foram utilizados os mapas de solos da Bacia do Araguaia - Tocantins, na escala 1:1.000.000, elaborados pelo PRODIAT (Brasil, 1982), segundo o Sistema brasileiro de classificacao de solos (Embrapa, 1999)
AQUINO, A. R. L. de   +2 more
core  

Ecological function over evolutionary legacy: The limited role of shared evolutionary history in shaping modern frugivory interactions

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3688-3703, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Frugivory, encompassing interactions between vertebrates and plants that range from mutualistic to antagonistic, drives seed dispersal and underpins the structure and resilience of tropical ecosystems.
Lisieux Fuzessy   +2 more
wiley   +1 more source

Sistemas de Preparo do Solo e Características Espectroscópicas da Matéria Orgânica em Ambientes Tropicais e Subtropicais Brasileiros. [PDF]

open access: yes, 2011
bitstream/CNPDIA/10465/1/BPD12_2005 ...
BAYER, C.   +5 more
core  

EFICIÊNCIA DE SOLUÇÕES DENSAS NO FRACIONAMENTO FÍSICO DA MATÉRIA ORGÂNICA DO SOLO

open access: yesRevista Brasileira de Ciência do Solo, 2015
Os mecanismos de estabilização da matéria orgânica (MO) têm sido estudados em solos tropicais e subtropicais brasileiros; no entanto, poucos trabalhos avaliaram a influência da parte metodológica do uso das soluções nos resultados obtidos.
Paulo Cesar Conceição   +5 more
doaj   +1 more source

Trait coordination reveals the fast–slow plant economics spectrum along the vertical canopy profile in central Amazonian forests

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3596-3610, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how environmental drivers affect tree functioning is essential to improve predictions of tropical forests' response to climate change. While functional traits directly influence tree performance, our understanding of how canopy environments shape their ...
Leonardo G. Ziccardi   +13 more
wiley   +1 more source

Análise da diversidade micorrízica na rizosfera de genótipos de milho (Zea mays L.) contrastantes para eficiência no uso de P utilizando eletroforese em gel de gradiente desnaturante (DGGE). [PDF]

open access: yes, 2012
A diversidade genética de fungos micorrízicos arbusculares (FMA) presentes na rizosfera de genótipos de milho tropicais, selecionados como contrastantes para eficiência no uso de fósforo (P), foi avaliada pela técnica de eletroforese em gel de gradiente ...
ALVES, V. M. C.   +6 more
core  

Biomass production of tropical trees across space and time: The shifting roles of diameter growth and wood density

open access: yesJournal of Ecology, Volume 113, Issue 11, Page 3141-3158, November 2025.
Diameter growth is an important and good indicator of forest carbon production. However, size‐related changes in wood density, which are usually neglected, are critical for accurate short‐ and long‐term carbon assessments, especially in tropical humid sites.
Bruna Hornink   +18 more
wiley   +1 more source

Topossequência de solos na Ilha da Trindade, Atlântico Sul. [PDF]

open access: yes, 2012
As ilhas oceânicas, como ambientes sui generis no planeta, têm despertado, cada vez mais, o interesse da comunidade científica em virtude de sua importância ambiental.
ALBUQUERQUE FILHO, M. R.   +7 more
core  

Effects of Long‐Term Nutrient Addition on Leaf Metabolites, Herbivory, and Mycorrhizal Spores Associated With a Savannah Woody Species

open access: yesAustral Ecology, Volume 50, Issue 11, November 2025.
ABSTRACT Given the importance of soil conditions for ecosystem functioning, fertilisation experiments are a valuable tool for assessing how systems respond to changes in soil properties. However, the effects of changes in nutrient availability on multitrophic interactions in savannah ecosystems of the Brazilian Cerrado are still scarce. We investigated
Alexandra Martins   +5 more
wiley   +1 more source

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