Contaminants of Emerging Concern in the Environment
Average concentrations of antidepressants in water, sediment, and fish neural tissue
from Boulder Creek just below the point where wastewater from a sewage treatment plant is discharged (USGS Site ID 400305105103901
). Since concentration units differed for each sample type, the concentrations were normalized to the highest single antidepressant concentration in each sample type (highest concentration was set to equal one). The graph shows that fish selectively absorb some antidepressants more than others.
Cyanobacterial accumulation at Binder Lake, IA, dominated by the blue green algae Microcystis sp.
with a dead fish. USGS
scientists studied the effects of harmful algal blooms on lake water quality
found that blooms of blue-green algae (cyanobacteria) in Midwestern lakes produced mixtures of cyanotoxins and taste-and-odor causing compounds, which co-occurred in lake water samples.
Dripping algae leaves an impact — A USGS
scientist collecting a sample of algae for analysis during a study of the effects of harmful algal blooms on lake water quality
. The divots left from the algae dripping from the sampler shows how thick these accumulations can be. Microcystis sp.
dominated this accumulation at Binder Lake, Iowa.
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