Results 11 to 20 of about 98,151 (268)

IDENTIFICATION AND MICROPROPAGATION OF VIRUS-FREE BLACK PEPPER GENOTYPES (Piper nigrum L.)

open access: yesCiência Agrícola, 2020
Virus infections are a major constraint for black pepper cultivation (Piper nigrum L.), a vegetatively propagated crop; therefore, the in vitro selection of virus- free plants is an alternative to reestablish phytosanitary quality of pepper culture.
Gleyce kelly Sousa Ramos   +7 more
doaj   +1 more source

Widespread reforestation before European influence on Amazonia

open access: yesScience, 2021
Pre-Columbian reforestation in Amazonia An early 17th-century temporary reduction in global atmospheric carbon dioxide (CO2) levels has now been attributed to reforestation in Amazonia after the catastrophic loss of life of the indigenous population ...
M. Bush   +11 more
semanticscholar   +1 more source

‘Saber é poder’ e o saber do poder

open access: yesRevista Brasileira de História da Educação, 2020
Este artigo analisa a ‘experiência educativa’ de José Veríssimo associada à ‘marginalização’ e ao ‘engajamento’ político na província do Pará. No contexto de polarização política entre tradição imperial e política científica, ocorreu o concurso para a ...
Felipe Tavares Moraes
doaj   +1 more source

O TIPO PALAFITA AMAZÔNICO

open access: yesRevista Projetar, 2021
O conflito arquitetônico entre produção formal de habitação e produção informal tem revelado o papel da vivência espacial de comunidades tradicionais como fator decisivo para adaptação habitacional em programas de reassentamento.
Tainá Marçal dos Santos Menezes   +1 more
doaj   +1 more source

Systematics and biogeography of the Boana albopunctata species group (Anura, Hylidae), with the description of two new species from Amazonia

open access: yesSystematics and Biodiversity, 2021
The outstanding species richness of Amazonia has fascinated biologists for centuries. However, the records of actual numbers and distribution of species forming its ecosystems are so incomplete that the understanding of the historical causes and regional
Antoine Fouquet   +14 more
semanticscholar   +1 more source

Sensory ecologies, plant-persons and multinatural landscapes in Amazonia

open access: yesBotany, 2021
Seeking to generate a deeper methodological and theoretical dialogue between botanical science and anthropology, this paper summarizes interdisciplinary approaches to human-plant interactions we have described as “sensory ecology” and “phytoethnography,”
G. Shepard, L. Daly
semanticscholar   +1 more source

Relationship between Biomass Burning Emissions and Deforestation in Amazonia over the Last Two Decades

open access: yesForests, 2021
With deforestation and associated fires ongoing at high rates, and amidst urgent need to preserve Amazonia, improving the understanding of biomass burning emissions drivers is essential. The use of orbital remote sensing data enables the estimate of both
G. Mataveli   +10 more
semanticscholar   +1 more source

Competition influences tree growth, but not mortality, across environmental gradients in Amazonia and tropical Africa

open access: yesEcology, 2020
Competition among trees is an important driver of community structure and dynamics in tropical forests. Neighboring trees may impact an individual tree’s growth rate and probability of mortality, but large‐scale geographic and environmental variation in ...
D. Rozendaal   +42 more
semanticscholar   +1 more source

Peasants and agro-chemicals in eastern Amazonia

open access: yesDesenvolvimento e Meio Ambiente, 2021
Este texto analisa como uma sociedade camponesa da região amazônica, integrada à agroindústria de dendezeiro, compreende o uso e os sentidos dos agrotóxicos em seu universo social e simbólico.
Genisson Paes Chaves   +1 more
doaj   +1 more source

Interoperabilidade na região amazônica

open access: yesColeção Meira Mattos, 2020
O transporte intermodal é importante para o planejador logístico na região Amazônica. Seu custo de manuseio e de transbordo não pode ser excessivamente oneroso para que operações isoladas e conjuntas sejam possíveis, facilitando a interoperabilidade ...
Alexandre Rocha Violante   +3 more
doaj   +1 more source

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