Dangerous relationships: biases in freshwater bioassessment based on observed to expected ratios

Can Species Distribution Models Aid Bioassessment when Reference Sites are Lacking? Tests Based on Freshwater Fishes.

Recent literature reviews of bioassessment methods raise questions about use of least-impacted reference sites to characterize natural conditions that no longer exist within contemporary landscapes. We explore an alternate approach for bioassessment that uses species site occupancy data from museum archives as input for species distribution models (SDMs) stacked to predict species assemblages o...

Response to : “ The Mortality Observed - to - Expected Ratio in

Using Expected Loss Ratios in Reserving

Pharmacoepidemiological considerations in observed‐to‐expected analyses for vaccines†

Observed-to-expected (OE) analyses, together with data mining algorithms1–7 and pharmacoepidemiological studies,8 are part of the quantitative pharmacovigilance toolkit for vaccines. While data mining algorithms generate hypotheses about potential safety concerns and pharmacoepidemiological studies test specific hypotheses or measure associations, OE analyses stand in between. The role of OE an...

Water quality indices based on bioassessment: the biotic indices.

Water quality indices (WQIs), which translate numerical values of several water quality characteristics of a sample into a single value, play a very important role in the monitoring, comparison and control of water quality. The WQIs of modern and post-modern times have been almost exclusively based on physical and chemical characteristics, and have seldom included 'biological' characteristics o...