Brazil contains the largest volume of freshwater of any nation in the world; however, this
essential natural resource is threatened by rapid increases in water consumption and water …

The biological assessment of rivers ie, their assessment through use of aquatic
assemblages, integrates the effects of multiple-stressors on these systems over time and is …

Tropical primary forests have been disappearing quickly to make use of the land for
commercial purposes. Land-use change has an impact on downstream aquatic processes …

Assessing the ecological impacts of anthropogenic pressures is a key task in environmental
management. Multimetric indices (MMIs), based on aquatic assemblage responses to …

Urbanization and its physical and chemical effects on aquatic environments influence
invertebrate communities negatively. Yet, it is not clear how urbanization affects inter-annual …

Landscape and site-scale data analyses aid the interpretation of biological data and thereby
help us develop more cost-effective natural resource management strategies. Our study …

Abstract Research on the Awash River focused on the upper section, while the middle and
lower regions received little attention. Thus, the goal of this study was to evaluate the impact …

The objective of this study was to evaluate if aquatic pollution promote diet shifts in two
livebearer fishes (Poeciliidae): an exotic species, the guppy (Poecilia reticulata), and a …

Biomonitoring of stream health in the tropics still emphasize on the use of standard water
chemistry methods (physicochemical variables), which require expensive and elaborate …

Hydropower dams substantially modify lotic ecosystems. Most studies regarding their
ecological impacts are based on large dams and provide little information about the far more …