Results 111 to 120 of about 21,344 (228)

THE ERA OF MIGRATIONS IN RORAIMA

open access: yes
The Brazilian Amazon, particularly the state of Roraima, represents one of the most significant new developments in studies of international migration in South America. Between 2017 and 2024, the entry of more than 900,000 Venezuelans through Pacaraima (74% of all Venezuelan entries) brought profound transformations to the geopolitical dynamics of the ...
Demétrio, Natália Belmonte   +2 more
openaire   +3 more sources

IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES

open access: yesRevista de Agricultura Neotropical
The conversion of the Amazon rainforest into pasture significantly impacts soil quality, affecting biodiversity, biogeochemical cycles, and carbon stocks. Studies indicate a reduction in microbial activity and biomass associated with this transformation.
Sandra Cátia Pereira Uchôa   +5 more
doaj   +1 more source

Stethorrhagus roraimae Gertsch 1942

open access: yes
Stethorrhagus roraimae Gertsch, 1942 Figs 7A–C, 49 Stethorrhagus roraimae Gertsch, 1942: 13, fig. 36, ♀. Stethorrhagus roraimae – Bonaldo & Brescovit 1994: 61, fig. 23a–b, ♀. Diagnosis Females are similar to those of S. hyula, S. nigrinus and S. papilio sp. nov.
Xavier, Cláudia   +2 more
openaire   +2 more sources

Cultivar de feijão-caupi BRS Tumucumaque: Nova Cultivar para Roraima.

open access: yes, 2008
Conhecido e m Roraima como feijão regional, o feijão-caupi [Vigna unguiculata (L.) Walp] é uma d a s fontes alimentares mais importantes estrategicas para a s regiões tropicais e subtropicais do mundo.
RIBEIRO, V. Q.   +3 more
core  

Desempenho produtivo e qualidade do leite em rebanhos bovinos da Savana Amazônica

open access: yesCiência Animal Brasileira
Objetivou-se investigar as tendências fenotípicas e os efeitos de fatores ambientais sobre a produção e a composição do leite em rebanhos da Savana Amazônica. Foram analisados registros de controle leiteiro e amostras coletadas entre 2022 e 2024 em três
Yasmin Lima de Oliveira   +5 more
doaj  

Seroprevalence of Leptospira in Lavradeiro horses, a semi-feral ecotype from the Northern Brazilian Amazon. [PDF]

open access: yesVet Res Commun
da Silva Martins A   +9 more
europepmc   +1 more source

Hidden Infections, Emerging Resistance: Underdiagnosed Plasmodium vivax and Multidrug Resistance-1 (pvmdr1) Gene Amplification in the Guiana Shield. [PDF]

open access: yesJ Infect Dis
Puça MCSB   +14 more
europepmc   +1 more source

Correction: Comprehensive study of resveratrol associated to sulfadiazine in lymphocytes infected with Toxoplasma gondii: involvement of purinergic signaling in immune response. [PDF]

open access: yesActa Parasitol
Bottari NB   +11 more
europepmc   +1 more source

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