The Amazon Basin is the largest hydrographic basin on the planet, and the dynamics of its aquatic microorganisms strongly impact global biogeochemical cycles. However, it remains poorly studied. This metagenome project was performed to obtain a snapshot of prokaryotic microbiota from four important lakes in the Amazon Basin.
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http://dx.doi.org/10.1128/genomeA.01440-16 | DOI Listing |
Nat Hum Behav
December 2024
Department of Archaeology, University of Cambridge, Cambridge, UK.
Over the past decade, multidisciplinary research has seen the Amazon Basin go from a context perceived as unfavourable for food production and large-scale human societies to one of 'garden cities', domestication, and anthropogenically influenced forests and soils. Nevertheless, direct insights into human interactions with particular crops and especially animals remain scarce across this vast area. Here we present new stable carbon and nitrogen isotope data from 86 human and 68 animal remains dating between CE ~700 and 1400 from the Llanos de Mojos, Bolivia.
View Article and Find Full Text PDFBiodivers Data J
December 2024
Instituto Chico Mendes de Conservação da Biodiversidade, Prado, Brazil Instituto Chico Mendes de Conservação da Biodiversidade Prado Brazil.
Background: The Amazon Rainforest, a paramount source of global biological diversity, faces challenges due to its understudied species richness, an insufficient investment in research and escalating rates of deforestation. Thus, acquiring additional data, especially for species distributions is crucial to fill knowledge gaps and guide forthcoming research and conservation initiatives in areas that have been inadequately sampled. This study contributes to addressing these challenges by offering new insights into the diversity and distribution of species in the Brazilian Amazon.
View Article and Find Full Text PDFRev Inst Med Trop Sao Paulo
December 2024
Universidade de São Paulo, Faculdade de Medicina, Hospital das Clinicas, Laboratório de Investigação Médica (LIM-06), São Paulo, São Paulo, Brazil.
Using a panel study design, we aimed to estimate the seroconversion and seroreversion rates of anti-Strongyloides IgG antibodies from surveys carried out 11 months apart in a rural community in the Amazon Basin in Brazil. We used enzyme immunoassays to measure anti-Strongyloides IgG antibodies in 325 baseline plasma samples and 224 others that were collected 11 months later from residents in the agricultural settlement of Granada, Acre State. We observed anti-Strongyloides IgG antibodies in 21.
View Article and Find Full Text PDFEnviron Res
December 2024
Vale Institute of Technology, Rua Boaventura da Silva 955, Nazaré 66055-090 Belém, Pará, Brazil.
Understanding geochemical source-sink relationships is an important aspect for developing background values of potentially toxic elements (PTEs) in a lake basin. This approach was studied in the Araguaia belt of Amazonia, Brazil. A total of 96 sediments (from 13 lake cores LA1-LA13), 36 surface soils, and 19 catchment rocks were collected in 2022 and chemical analysis of these samples was performed in the fine fraction (< 177 μm) using XRF and ICP-MS.
View Article and Find Full Text PDFLatin America is experiencing an unprecedented dengue outbreak, causing an increased health burden. We document the cocirculation of dengue viruses 1-4 in Putumayo, a remote, underserved region at the border between Ecuador and Colombia. Dengue circulation in this largely unexplored territory represents a threat to public health in Putumayo and neighboring areas.
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