“…Considering the relatively small area surveyed, this region of western Amazonia appears to support the most diverse ant fauna yet recorded.…”
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“…The Pacific was the region with the highest African ancestry, Amazonia harboured the highest Native ancestry and the Andean and Orinoquían regions showed the highest proportion of European ancestry. …”
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“…From a quantitative standpoint, results corroborated the existence of a major Sample Area effect in all datasets, although for the Amazonia dataset the six-hour strategy was significantly less species-rich after extrapolation, and for the Cerrado dataset it was more efficient. …”
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“…In this study, we used microsatellite markers and mitochondrial control‐region sequences to investigate contemporary and infer historical patterns of genetic diversity and structure of the Rufous‐throated Antbird (Gymnopithys rufigula) within and between two large reserves in central Amazonia. Analyses based on microsatellites suggested two genetically distinct populations and asymmetrical gene flow between them. …”
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“…We suggest conservation strategies for high‐diversity areas and sampling efforts be directed towards Amazonia and poorly known species.…”
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“…Advancing extensive cattle production is a major threat to biodiversity conservation in Amazonia. The dominant vegetation cover has a drastic impact on soil microbial communities, affecting their composition, structure, and ecological services. …”
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“…The combination of high diversification rates and extensive biotic interchange associated with Western Amazonia yielded its extraordinary contemporary richness and phylogenetic endemism. …”
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“…Interannual variations in CO(2) exchange across Amazonia, as deduced from atmospheric inversions, correlate with El Niño occurrence. …”
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“…BACKGROUND: Archaeology reports millenary cultural contacts between Peruvian Coast-Andes and the Amazon Yunga, a rainforest transitional region between Andes and Lower Amazonia. To clarify the relationships between cultural and biological evolution of these populations, in particular between Amazon Yungas and Andeans, we used DNA-sequence data, a model-based Bayesian approach and several statistical validations to infer a set of demographic parameters. …”
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“…These findings highlight the unique genetic profile of the indigenous population of Brazilian Amazonia, which may reflect a distinct therapeutic profile for the treatment of ALL in these populations.…”
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“…This association became obscured by variation across biogeographical regions at the scale of Amazonia, resembling a Simpson’s paradox. By contrast, species richness was weakly or not significantly related to timber stock and NTFP abundance, suggesting that species richness is not a good predictor for these ecosystem services. …”
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“…Electrostatic discharge experiments under simulated martian atmospheric conditions indicate that atmospheric CO(2) has been sequestered into carbonate by the Mars dust activities during the Amazonia era.…”
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“…Given the scarcity of data pertaining to whole-genome sequences of cyanobacterial strains isolated in Brazil, we hereby present the draft genome sequence of the Cyanobium sp. strain CACIAM 14, isolated in southeastern Amazonia.…”
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“…In this issue, Del‐Rio and colleagues applied cline theory to a hybrid zone between two antbird species in Amazonia. A narrow and displaced mitochondrial cline suggests that the selected genetic marker failed to track the northward movement of this hybrid zone, possibly due to reduced fitness of female hybrids.…”
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“…A new species, Chactas moreti sp. n., is described from Ecuadorian Amazonia. It can be distinguished from Chactas mahnerti Lourenço, 1995, the other known species of this genus from Ecuador by its smaller body size, distinct morphometric values, overall darker blackish-brown coloration, totally smooth vesicle, and a concave anterior margin of carapace. …”
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“…The new descriptions raise to four the number of Teuthraustes species in Ecuadorian Amazonia and raise to two the number of species described from the Pacific region. …”
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“…Here, using pan-tropical literature and new analyses in Amazonia with plots with reliable identifications we assess the impact that species-related variation in wood density has on biomass estimates of mature tropical forests. …”
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“…This paper addresses the question of environmental change in Amazônia, by looking at the experiences of the large-scale biosphere–atmosphere (LBA) experiment in the Amazon, and three other enterprises—the extractive reserves, the Pilot Programme to Conserve the Brazilian Rain Forest (PPG7) and ecological-economic zoning—that address questions of sustainable development in the region. …”
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“…. • Methods and Results: We used an enriched genomic library method to isolate and characterize 11 nuclear microsatellite loci for A. rosaeodora, which exhibited an average of 9.6 and 8.7 alleles per locus in two populations from central Amazonia. Mean observed and expected heterozygosities over the 11 loci were 0.604 and 0.687, and 0.807 and 0.828, respectively, in the two populations. • Conclusions: The polymorphic microsatellite loci developed for A. rosaeodora showed highly informative content and can be used as a powerful tool in genetic diversity and population structure, gene flow, and mating system studies for conservation purposes.…”
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“…We report the genome, in a single chromosome, of Lactococcus lactis strain AI06, isolated from the mesocarp of the açaí fruit (Euterpe oleracea) in eastern Amazonia, Brazil. This strain is an endophyte of the açaí palm and also a component of the microbiota of the edible food product.…”
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