Beach Grass

Marram Grass

Marram Grass that has grown up a dune

 As everyone who has been to Lake Michigan knows, the sand dunes are full of tall, thick marram grass, or more commonly called beach or dune grass. This grass can get to be several feet high and is smooth and waxy to the touch. The edges are slightly sharp and the ends of the blades are pointed. 

Dune grass lies several meters inland from the water

 Marram grass is very important to dune succession, which is the progression of wildlife and vegetation that move in and out of a dune ecosystem. Marram grass is present on the upper beach or foredune, which is several meters back from the water. The grass helps to slow down the wind and prevent erosion. It also forms a root system, which allows humus to begin to build up. (Humus is decomposing organic matter that forms a nutrient rich soil). After the grass comes in, birds and other wildlife bring in seeds. Other plants and trees begin to grow and more wildlife make the dunes their home.

Marram grass covers much of the dunes and beach area

 These photos were taken at Saugatuck Dunes State Park by students of the ZOL 355 class.