Columbia Environmental Research Center

Mass removal of the invasive silver carp Hypophthalmichthys molitrix and bighead carp Hypophthalmichthys nobilis (collectively referred to as bigheaded carp) is a primary management action in the United States to contain population growth and reduce upstream dispersal. Efficient capture and removal techniques are required to achieve this goal, and the USGS is working to develop and evaluate such...

Effects-directed analysis (EDA) reverse-engineers environmental toxicity testing by measuring effects on cells first, and identifying the particular chemicals later. In this publication, we reviewed published information on EDA methods to improve future methods.

Early development is a sensitive window for estrogenic endocrine disruption in largemouth bass. Atrazine treatments caused changes to gene expression patterns that were both similar to estrogen and distinct from estrogen.