The Wandering Naturalist

The Wandering Naturalist podcast explores the natural and cultural history of the 27,000-acre Three Rivers Park District and the surrounding Twin Cities area. Hosted by Brandon Baker, an interpretive naturalist at Eastman Nature Center, and Wildlife Biologist Angela Grill, the podcast covers a new topic each month.

Earthworm invaders

Dr. Lee Frelich discusses in this podcast an invasive species problem that threatens plant diversity and ecosystem functioning wherever it occurs. Earthworms are very powerful ecosystem engineers. They alter the entire structure of the soil, affecting everything that grows there. Invasive worms are changing entire ecosystems from the bottom up and it is largely going on out of sight and out of mind.