Results 71 to 80 of about 209,718 (219)

Small understory trees increase growth following sustained drought in the Amazon

open access: yesNew Phytologist, EarlyView.
Summary Droughts pose a major threat to the Amazon rainforest, yet the mechanisms enabling trees to maintain growth under prolonged drought remain poorly understood, particularly in the understory layer. We leveraged a 22‐yr Throughfall Exclusion (TFE) in a 1‐ha plot in eastern Amazonia, paired with a Control plot, to test whether small understory ...
Mateus C. Silva   +16 more
wiley   +1 more source

A sustentabilidade da habitação do seringueiro amazônico

open access: yesPós: Revista do Programa de Pós-Graduação em Arquitetura e Urbanismo da FAUUSP, 2010
Este artigo, com área de concentração em tecnologia das construções, propõe-se a pesquisar e identificar a sustentabilidade da casa do seringueiro amazônico, construída nos seringais acreanos, a partir do final do século 19 e segunda metade do século 20.
Valdeci Candido de Lima
doaj   +1 more source

Cenário do uso do solo em áreas de preservação permanente ripárias no município de Rio Branco, Acre

open access: yesBiodiversidade Brasileira
A avaliação e adequação da ocupação do solo em áreas de preservação permanente (APPs) são importantes para garantir a quantidade e qualidade da água e a biodiversidade local. Assim, este estudo avaliou a relação entre o uso e cobertura do solo e as APPs
José Epitácio dos Santos Neto   +6 more
doaj   +1 more source

Interações entre nuvens, chuvas e a biosfera na Amazônia Clouds, rain and biosphere interactions in Amazon

open access: yesActa Amazonica, 2005
Apresenta-se uma revisão dos resultados já obtidos no Projeto LBA, na componente de Física do Clima, referente ao efeito da interação entre a biosfera e a formação de nuvens e de chuva em diferentes estações do ano e regiões da Bacia Amazônica.
Maria Assunção Faus da Silva Dias   +2 more
doaj   +1 more source

Variabilidade diária da precipitação em regiões de floresta e pastagem na Amazônia [PDF]

open access: yesActa Amazonica, 1998
As estações automáticas do Projeto ABRACOS instaladas na Amazônia Ocidental forneceram os dados horários de precipitação em áreas de pastagem e floresta, durante o trimestre mais chuvoso (j/f/m) no período de 1992 a 1995.
Rafael FERREIRA DA COSTA   +4 more
doaj   +1 more source

An annotated list of Symmachia Hübner, [1819] (Lepidoptera: Riodinidae: Symmachiini) from Parque Nacional da Serra do Divisor, Acre, Brazil, with the description of a new species [PDF]

open access: yes, 2013
We provide an illustrated list of species belonging to the genus Symmachia Hübner, [1819] (Lepidoptera: Riodinidae: Symmachiini) collected during an expedition conducted between September 10-21, 2011 in the northern part of the Parque Nacional da Serra ...
Casagrande, Mirna Martins   +4 more
core  

Comparative measurements of carbon dioxide fluxes from two nearby towers in a central Amazonian rainforest: the Manaus LBA site [PDF]

open access: yes, 2002
Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously ...
Araújo, A.C.   +11 more
core   +2 more sources

When Calves Get Vulnerable, Ocelots (Leopardus pardalis) Get Bold: A Camera Trap Record of Opportunistic Foraging in a Fragmented Landscape

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
We report the first confirmed record of an ocelot (Leopardus pardalis) dragging a newborn calf in a degraded forest fragment of southeastern Brazil. Using camera trap records, we reveal an opportunistic foraging event involving a vulnerable domestic prey within a highly fragmented landscape.
Álvaro Augusto Naves Silva   +2 more
wiley   +1 more source

Beyond Core‐Periphery: A Multidimensional Typology of Brazilian Regional Inventive Capacity

open access: yesGrowth and Change, Volume 57, Issue 1, March 2026.
ABSTRACT The geography of invention in Brazil is characterized by a profound and multi‐polarised structure that extends beyond a simple core‐periphery dichotomy. This paper demonstrates this complexity through a multidimensional analysis of inventive capacity (2000–2023), operationalised along four axes—‘how much’, ‘who’, ‘how’, and ‘what’ is invented ...
Ludmilla Rodrigues Costa Gonçalves   +1 more
wiley   +1 more source

Effects of potassium/sodium fertilization and water availability on wood properties of Eucalyptus grandis trees [PDF]

open access: yes, 2019
In Brazil. most Eucalyptus plantations are located in regions experiencing periods of water shortage where fertilizers such as potassium (K) are intensively used to achieve high productivity. Recently.
Chaix, Gilles   +2 more
core  

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