A female Brachionus sp. rotifer
A female Brachionus sp. rotifer with an unusually
large number of attached eggs; collected from a
Mississippi River floodplain lake.


An adult burrowing mayfly
An adult burrowing mayfly (Hexagenia bilineata), a
common and important component of the benthic
community of the Mississippi River today.


Obliquaria reflexa

A threehorn wartyback mussel, Obliquaria reflexa,
commonly found in Upper Mississippi River
sediments near Dubuque, Iowa.

A mussel survey report (2013 Mussel Survey) and an accompanying photo addendum (2013 Mussel Survey Photo Addendum) are available.












Related Links

The website for EPA’s National Water Quality Criteria Documents for the Protection of Aquatic Life. ERIA staff contributed to several of these documents while they were affiliated with the University of Wisconsin – Superior.

A website that gives an overview of EPA’s Contaminated Sediments Program that ERIA staff contributed to as part of a USEPA/USACE Task Group, while affiliated with UW- Superior. ERIA staff were involved in the development of toxicity test protocols and in the testing of harbor sediments.

A website that presents a comprehensive manual for evaluating contaminated sediments in the Great Lakes. ERIA staff co-authored the tier 3 protocols in Appendix G, “Procedures for Biological Effects Testing” while affiliated with UW-Superior.

An EPA website that provides online access to a large database on the toxicity of chemicals toward the fathead minnow.  ERIA scientists contributed to this database in a cooperative research program with EPA scientists in Duluth, MN, while the former were affiliated with UW-Superior.

A University of Wisconsin website that includes the Subcollection, "Transport, Fate and Effects of Silver in the Environment".  ERIA staff contributed to the International Argentum Conferences while affiliated with UW-Superior.

A website of the U. S. Fish & Wildlife Service on mussels of the Upper Mississippi River.  It includes photographs of the different species, and information on life histories and ecology, threatened and endangered species, current threats, and mussel conservation activities.

The “About This Journal” page for the Bulletin of Environmental Contamination and Toxicology. ERIA staff scientist D. Call serves as a Senior Editor for this journal.

The website for the Society of Environmental Toxicology and Chemistry, an organization of professionals contributing to our knowledge base regarding environmental pollution issues. ERIA staff are active members and participants.

The website for an e-magazine for city government professionals. ERIA staff member D. Call authors environmental blog articles.