Twin Ports Freshwater Folk: Density Declines, Richness Increases, and Composition Shifts in Stream Macroinvertebrates

Environmental Protection Agency's Great Lakes Toxicology and Ecology Division Ecologist Samantha Rumschlag will give a presentation about changes to macroinvertebrates communities in streams. 

Samantha's presentation will be part of the August 2023 Twin Ports Freshwater Folk (TPFF) virtual event. TPFF webinars are for people in the Twin Ports communities of Duluth, Minnesota and Superior, Wisconsin, and anyone engaged in freshwater research, policy, or management.

TPFF meetings are the first Wednesday of every month and include networking and informal discussion followed by a presentation(s) on a freshwater topic.

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Registration is required to attend this virtual event.

Event Schedule

  • 11:30 a.m. Meet-and-greet breakout sessions
  • 12:00 p.m. Announcements by attendees
  • 12:05 p.m. Seminar(s)
  • 12:45 p.m. Moderated question and answer
  • 1:00 p.m. Adjourn


Samantha Rumschlag, ecologist, Great Lakes Toxicology and Ecology Division, Environmental Protection Agency.


Alex Frie, research and fellowship coordinator, Minnesota Sea Grant.

Image credit: Samantha Rumschlag