Results 11 to 20 of about 15,549 (211)

Viral diversity in wild rodents in the regions of Canaã de Carajás and Curionopólis, State of Pará, Brazil. [PDF]

open access: yesFront Microbiol
Wild rodents serve as crucial reservoirs for zoonotic viruses. Anthropogenic and environmental disruptions, particularly those induced by mining activities, can destabilize rodent populations and facilitate the emergence of viral agents. In the Canaã dos
Monteiro AFM   +7 more
europepmc   +2 more sources

Cave-dwelling bats of Carajás National Forest: New cytogenetic data of threatened species. [PDF]

open access: yesEcol Evol
The Carajás National Forest, a Conservation Unit protected by law, is one of the few forest remnants in the southeastern region of Pará, Eastern Amazonia, Brazil, reconciling biodiversity protection with economic activities (i.e. mining). The present study aims to describe the chromosomal diversity of bats in natural caves of the Carajás National ...
da Silva JB   +6 more
europepmc   +2 more sources

Assessing Connectivity Thresholds Under Habitat Loss Scenarios for Threatened Amphibians and Squamate Reptiles in the Eastern Brazilian Amazon. [PDF]

open access: yesEcol Evol
We assessed which habitat extinction threshold in a landscape is a good predictor of functional connectivity for 14 species of terrestrial herpetofauna in the eastern Brazilian Amazon. We concluded that forest species should maintain a threshold of approximately 30% of habitat to avoid a significant abrupt decline in overall connectivity.
Teixeira C   +4 more
europepmc   +2 more sources

Microbial Chemical Diversity and Cytotoxic Potential From Brazilian Ferruginous Caves: A Pioneering Metabolomic Survey. [PDF]

open access: yesChem Biodivers
ABSTRACT Cave microbiomes represent a rich yet understudied source of chemical diversity with biotechnological properties. Microorganisms in these environments thrive under extreme conditions such as darkness, oligotrophy, and high concentrations of inorganic matter like iron ore.
Kato NN   +5 more
europepmc   +2 more sources

Floral Integration and Phenotypic Selection on Floral Traits of <i>Ipomoea cavalcantei</i> (Convolvulaceae), a Rare, Endemic, and Endangered Species to the Amazon Ironstone Outcrops. [PDF]

open access: yesEcol Evol
This paper analyzed the evolutionary potential of Ipomoea cavalcantei (an endemic species from the Amazon) by using floral integration and phenotypic selection analysis. The analyzed population presented floral integration in style length, probably due to selective pressures from pollinators on floral traits related to pollen deposition.
Valentin-Silva A   +6 more
europepmc   +2 more sources

Crystallization Pathways of Iron Formations: Insights From Magnetic Properties and High-Resolution Imaging of the 2.7 Ga Carajás Formation, Brazil. [PDF]

open access: yesGeobiology
ABSTRACT Banded iron formations (BIFs) are chemical sedimentary rocks commonly utilized for exploring the chemistry and redox state of the Precambrian ocean. Despite their significance, many aspects regarding the crystallization pathways of iron oxides in BIFs remain loosely constrained.
Teixeira L   +4 more
europepmc   +2 more sources

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+1 more source

Visceral Leishmaniasis and Land Use and Cover in the Carajás Integration Region, Eastern Amazon, Brazil. [PDF]

open access: yesTrop Med Infect Dis, 2022
Human visceral leishmaniasis is a major public health problem in the Amazon. Thus, we analyzed the spatial distribution of this disease and its relationship with epidemiological, socioeconomic, and environmental variables in the Carajás Integration ...
do Socorro Carvalho Miranda C   +9 more
europepmc   +2 more sources

(Re)visitando a Amazônia: Serra dos Carajás e Monte Alegre, estado do Pará

open access: yesCadernos do LEPAARQ, 2023
A partir dos anos 1980, as pesquisas sobre a antiguidade da ocupação humana do continente americano são intensificadas no contexto da Amazônia Brasileira.
Déborah Darte-Talim, M. Rodet
semanticscholar   +1 more source

Corredor agroecológico: manejo de paisagens agrícolas e a conservação da biodiversidade no território de Carajás

open access: yesRevista Brasileira de Agroecologia, 2023
As áreas protegidas não são suficientes para produzir os serviços ecossistêmicos necessários à manutenção da vida. O corredor agroecológico contribui para a manutenção da conectividade e a redução da degradação de áreas protegidas e pode apoiar as áreas ...
Marcus Mendonça, Rodolfo Alves da Luz
semanticscholar   +1 more source

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