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Genetic ancestry proportion influences risk of adverse events from tuberculosis treatment in BrazilNARA Subscribed
Tuberculosis (TB) treatment is highly effective, but response to therapy varies by geography and population subgroups. We assessed differences in TB treatment response in a representative and heterogeneous Brazilian population. We estimated genetic ancestry according to major genetic ancestry groups (African, European, and Amerindian) in the Regional Prospective Observational Research in Tuberculosis (RePORT)-Brazil cohort usi...
Bees play an important role as pollinators, and evidence of global bee population declines has become increasingly common. While most studies of plant-pollinator networks focus on contemporary ecosystems, historical interaction datasets remain rare, particularly in tropical regions. Here, we revisited a historical dataset of plant-bee interactions collected between 1971 and 1975 in a cerrado area from southeastern Brazil that...
Lightning Behavior and Its Relationship with Topography, Precipitation, and Land Use in the São Francisco River BasinNARA Subscribed
This study quantifies how topographic features influence lightning activity in the São Francisco River Basin, Brazil, filling a critical gap by establishing previously unavailable thresholds. A 16-year climatology (1998–2013) was developed using LIS/TRMM lightning data, ASTER GDEM topography, CHIRPS precipitation, and MapBiomas land use, all standardized to a 0.1° grid. The analysis integrates elevation, slope, aspect, and lan...
Long-Term Effects of Nutrient Shifts and Warming on Chlorophyll-a in a Temperate Coastal EnvironmentNARA Subscribed
Anthropogenically driven nutrient shifts and warming are key stressors affecting phytoplankton in marine coastal environments. The German Bight, a coastal region in the North Sea, has undergone substantial nutrient reductions and rising sea surface temperature (SST) over recent decades. Despite extensive research, the combined long-term effects of nutrient shifts and warming, particularly in the river-influenced coastal area,...
Satellite remote sensing of ocean colour properties allows observation of the ocean with high temporal and spatial coverage, facilitating the better assessment of changes in marine primary production. Ocean productivity is often assessed using satellite-derived chlorophyll a concentrations, a commonly used proxy for phytoplankton concentration. We used the Copernicus GlobColour remote sensing chlorophyll a surface concentratio...
In double-diffusive mixing, whenever salinity and temperature decrease with depth, the water column is either unstable or predisposed to a state called salt fingering (SF), which exhibits increased vertical mixing. Analysis of a high-frequency time series of thermohaline data measured at the EMSO-E2M3A regional facility in the southern Adriatic Pit (SAP) from 2014 to 2019 reveals that in the south Adriatic, SF is the dominant...
The Cambeva variegata group (CVG) is endemic to a region situated in the intersection of two endangered biodiversity hotspots, Cerrado and Atlantic Forest, and drained by two important South American river basins, the upper Rio Paraná and upper Rio São Francisco basins. Presently, CVG comprises two nominal species, besides some still undescribed. We first performed a molecular phylogenetic analysis (total of 3368 bp) for five...