Exploring Sand Dunes

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Exploring Lake Michigan Sand Dunes : 

Exploring Lake Michigan Sand Dunes

Lake Michigan’s eastern shoreline contains the largest concentration of fresh water dunes in the world. : 

Lake Michigan’s eastern shoreline contains the largest concentration of fresh water dunes in the world.

How dune sand was formed : 

Formed millions of years ago when glaciers covered the land. How dune sand was formed

Dune sand is made up of: : 

Dune sand is made up of:

How dune sand moved : 

How dune sand moved

Dunes are created by three actions : 

Dunes are created by three actions Waves Wind Vegetation

In the late 1800’s Henry Chandler Cowles studies the dunes : 

In the late 1800’s Henry Chandler Cowles studies the dunes

Beach : 

Where water meets land Beach

Beach : 

Beach

Not many things live on the beach : 

Not many things live on the beach But many things visit the beach Ant lion colony Sea rocket Tiger beetle Sea gull Lady bugs People

Foredune : 

Where the first dunes are formed Foredune

Open dune area : 

Open dune area Hognose snake Fowler’s toad Monarch butterfly Monarch butterfly caterpillar on a milkweed plant Pitcher thistle

Through : 

Eastern bluebird Red fox Low area between the foredune and the backdune Through

Backdune : 

Trillium Jack in the pulpit Columbine Dutchman’s breeches Backdune

Backdune : 

Barred owl Raccoon Pileated woodpecker Eastern box turtle Backdune

Dunes are fragile : 

Dunes are fragile

Development : 

Development

Exotic species : 

Exotic species Garlic mustard Baby’s breath

Sand dune mining : 

Sand dune mining

You can help protect the dunes by: staying on paths, not littering, by leaving plants and wildlife in place : 

You can help protect the dunes by: staying on paths, not littering, by leaving plants and wildlife in place

Slide 22: 

www.lakemichigan.org 700 Washington Ave., Suite 150 Grand Haven, MI 49417 616-850-0745 A special thank you to P.J. Hoffmaster State park for use photographs and to park naturalist Elizabeth Tillman for her assistance

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