Results 71 to 80 of about 223,065 (271)

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  

Spatiotemporal Patterns and Socioeconomic Determinants of Pulmonary Tuberculosis in Piauí, Northeast Brazil, 2001–2024

open access: yesTropical Medicine &International Health, EarlyView.
ABSTRACT Background Pulmonary tuberculosis (PTB) remains a major public health problem, strongly associated with social and territorial inequalities. This study aimed to analyse temporal trends, spatiotemporal transmission patterns and socioeconomic determinants of PTB in the state of Piauí, Northeast Brazil, from 2001 to 2024.
José Mário Nunes da Silva   +2 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

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  

Selection of native trees for intercropping with coffee in the Atlantic Rainforest biome [PDF]

open access: yes, 2010
A challenge in establishing agroforestry systems is ensuring that farmers are interested in the tree species, and are aware of how to adequately manage these species.
Bonfim, V.R.   +7 more
core   +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

Metodologia para agrupar espécies arbóreas da floresta natural através de características do solo. [PDF]

open access: yes, 2017
Neste trabalho, agruparam-se as espécies arbóreas abundantes de uma floresta primária de terra firme por atributos do solo, a partir do inventário florestal realizado pela Embrapa Amapá, em uma floresta primária de terra firme local.bitstream/CNPS/11600 ...
GAZEL FILHO, A. B.   +3 more
core   +1 more source

Vanishing Treasures: Climate Change Steals Amazonian Coastal Livelihoods—A Cry from the Frontlines of Marajó Island

open access: yesClimate Resilience and Sustainability, Volume 5, Issue 1, June 2026.
In our study, we demonstrate how climate change is degrading fisheries and forest resources in Marajó Island's coastal communities, where we found younger residents and urban‐proximate groups express the strongest concerns. We document how warming temperatures and erratic rainfall are threatening traditional livelihoods, food security, and cultural ...
Davison M. S. Assis   +3 more
wiley   +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

Abiotic drivers of co‐occurrence and diversity patterns of Calopterygidae species in Amazonian protected freshwaters

open access: yesEcological Entomology, Volume 51, Issue 2, Page 235-249, April 2026.
Species co‐occurrences rely on their ability to explore similar or distinct available resources, and possible niche overlap can prevent their presence and establishment in a given site Damselflies of the Calopterygidae family demonstrated negative co‐occurrences in streams inside and outside PAs, highlighting that their ecological similarity is ...
Joás Silva Brito   +13 more
wiley   +1 more source

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