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A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels
The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets,Expand
Deforestation and sewage effects on aquatic macroinvertebrates in urban streams in Manaus, Amazonas, Brazil
In the last few years, awareness in developed countries has increased regarding the importance of urban watercourses as essential natural resources for human well being. Macroinvertebrates have beenExpand
Patterns of species richness for blackflies (Diptera: Simuliidae) in the Nearctic and Neotropical regions
Patterns of simuliid species richness were examined over a variety of scales at 532 stream sites in the Nearctic and Neotropical regions and found richness was not highly correlated with single‐point measurements of stream conditions. Expand
Trichomycetes (Zygomycota) in the digestive tract of arthropods in Amazonas, Brazil.
Eight species of Harpellales and three species of Eccrinales (Zygomycota: Trichomycetes) were found associated with the digestive tract of arthropods from terrestrial and aquatic environments in theExpand
Analysis of urban impacts on aquatic habitats in the central Amazon basin: Adult odonates as bioindicators of environmental quality
Overall, the results indicate that the diagnosis of the adult odonate community can provide a rapid and effective tool for evaluation of environmental quality. Expand
Effects of urbanization on stream habitats and associated adult dragonfly and damselfly communities in central Brazilian Amazonia
a b s t r a c t Thirty streams, located in Manaus in the central part of Brazilian Amazonia, were examined to evaluate the correlations between environmental integrity and the local communities ofExpand
Species richness and spatial distribution of blackflies (Diptera: Simuliidae) in streams of Central Amazonia, Brazil
1. The spatial distribution and species richness of blackflies were evaluated at 58 stream sites in Central Amazonia, Brazil. Samples were taken along a north–south axis of approximately 130 km and aExpand
A macroinvertebrate multimetric index to evaluate the biological condition of streams in the Central Amazon region of Brazil
Abstract Managers, researchers and technicians involved in the conservation and management of water resources in the Central Amazonia need a robust tool to assess biological quality in aquaticExpand
Effect of vegetation removal for road building on richness and composition of Odonata communities in Amazonia, Brazil
Using odonate community composition and key species appears to be more efficient in biomonitoring programs than simply using species richness, since species richness remained unaltered. Expand
A social and ecological assessment of tropical land uses at multiple scales: the Sustainable Amazon Network
The Sustainable Amazon Network (Rede Amazônia Sustentável, RAS), a multidisciplinary research initiative involving more than 30 partner organizations working to assess both social and ecological dimensions of land-use sustainability in eastern Brazilian Amazonia, is presented. Expand