Predicting freshwater biological quality using macrophytes: A comparison of empirical modelling approaches.

Difficulties have hampered bioassessment in southern European rivers due to limited reference data and the unclear impact of multiple interacting stressors on plant communities. Predictive modelling may help overcome this limitation by aggregating different pressures affecting aquatic organisms and showing the most influential factors. We assembled a dataset of 292 Mediterranean sampling locations on perennial rivers and streams (mainland Portugal) with macrophyte and environmental data.

Different intensities and directions of hyporheic water exchange in habitats of aquatic Ranunculus species in rivers-a case study in Poland.

Hyporheic water exchange driven by groundwater-surface water interactions constitutes habitat conditions for aquatic biota. In our study, we conducted a field-research-based analysis of hyporheic water exchange to reveal whether the hyporheic water exchange differentiates particular Ranunculus sp. habitats.

Origin, genetic structure and evolutionary potential of the natural hybrid Ranunculus circinatus × R. fluitans.

Understanding the genetic variability of hybrids provides information on their current and future evolutionary role. In this paper, we focus on the interspecific hybrid Ranunculus circinatus × R. fluitans that forms spontaneously within the group Ranuculus L.

River ecosystem endangerment from climate change-driven regulated flow regimes.

Major threats of freshwater systems are river damming and habitat degradation, further amplified by climate change, another major driver of biodiversity loss. This study aims to understand the effects of climate change, and its repercussions on hydropower production, on the instream biota of a regulated river. Particularly, it aims to ascertain how mesohabitat availability downstream of hydropower plants changes due to modified flow regimes driven by climate change; how mesohabitat changes will influence the instream biota; and if instream biota changes will be similar within and between biological groups.

Malaria Diagnosis by U.S. Providers on Short-term Medical Mission Trips to Uganda.

Malaria is one of the top 10 leading causes of death in Uganda. Short-term medical missions (STMMs) to address unmet medical needs in lower-resource settings are increasingly common. Th is study evaluates correlations between patient and clinician variables and accurate malaria diagnosis by providers on STMMs to Uganda.