The response of larval aquatic insects to stressors such as metals is used to assess the
ecological condition of streams worldwide. However, nearly all larval insects metamorphose …

Neonicotinoid insecticides are frequently detected in surface waters near agricultural areas,
leading to a potential for chronic exposure to sensitive aquatic species. The midge …

Although insects occur in nearly all freshwater ecosystems, few sensitive insect models exist
for use in determining the toxicity of contaminants. The objectives of the present study were …

Of the emerging contaminant types thought to threaten freshwater biota, per-and
polyfluoroalkyl substances appear to be particularly widespread, and limited studies …

Anthropogenic disturbances, including those from developing energy resources, can alter
stream chemistry significantly by elevating total dissolved solids. Field studies have …

Elevated major ion concentrations in streams are commonly observed as a consequence of
resource extraction, de-icing and other anthropogenic activities. Ecologists report …

Field and laboratory studies have shown that mayflies (Ephemeroptera) tend to be relatively
sensitive to elevated major ion concentrations, but little is known about how ionic …

Neonicotinoid insecticides used in agriculture can enter freshwater environments in pulses;
that is, a short-term period of a higher concentration, followed by a period of a comparatively …

Residual concentrations of pesticides are commonly found outside the intended area of
application in Ontario's surface waters. Periphyton are a vital dietary component for grazing …

Aquatic insects are poorly represented in water quality criteria, and previous studies have
suggested a lack of sensitivity in acute toxicity tests despite observational studies …