• Looking out at the lake

    Sleeping Bear Dunes

    National Lakeshore Michigan

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  • No water at Weather Station Campground until further notice.

    The well at the Weather Station Campground is down for repair. Water is not available at the campground at this time.

  • Changes in compendium

    The Superintendent's Compendium for Sleeping Bear Dunes National Lakeshore was updated on August 19, 2014. Changes were related to designated wilderness, mushroom collecting, and the use of unmanned aircraft. More »

Dune Ecology

Consider the conditions that plants must deal with on the dunes; strong sunlight; low soil fertility; drying wind action; limited soil moisture; wind erosion, which can expose root systems; and build-ups of sand which can partially or completely bury plants.

Notice the cottonwood trees growing on the steep dune across the road. They are managing to survive despite their precarious position. The cottonwood is the only common tree of the dunes, and is well adapted to the dune environment. Its fast rate of growth allows it to keep pace with burial by sand. Notice that the trees are growing in a cluster. This too is typical. The cottonwood can reproduce by cloning, sprouting new trunks from roots. The network of roots helps to hold the sand in place and the tree itself acts as a windbreak. This helps to stabilize the dunes. The dense root networks of various grasses also hold the sand in place. Once the dune is stabilized, new plants can begin growing on it, plants which are not able to survive on an active dune. Common juniper, the evergreen shrub growing among the grasses, is one of the typical plants of stabilized dunes.

 
Cottonwood Trees
Cottonwood Trees on the dunes
Kerry Kelly 2006
 

Did You Know?

Cannery Boat Museum

The Great Lakes were the highway of the past. It was the main way that cargo and passengers moved through this area until roads were established. A variety of boats used on the Great Lakes are on display at the Cannery in Glen Haven within Sleeping Bear Dunes National Lakeshore. More...