Changes to Rivers


Michigan Environmental Education Curriculum
River and Stream Ecosystems

Three major factors that have influenced the decline of lake sturgeon in the Great Lakes include:

  • Construction of dams
  • Habitat loss
  • Commercial fishing

Next you will learn how each of these factors has affected the lake sturgeon, as well as many other animals in rivers.

Tippy Dam: Wellston, MI

Dam Construction

Big Manistee River, MI

Habitat Destruction

Commercial Fishing Boat

Commercial Fishing

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