Juneau Nature

Natural & cultural history of Juneau & Southeast Alaska

Juneau Nature - Natural & cultural history of Juneau & Southeast Alaska

Intertidal beaches

Classified by substrate composition

The Alaska Shorezone Project spatial database classifies intertidal beaches in many ways. One of the most useful is substrate size.

Beaches can be subdivided into 3 groups:(1) exposed bedrock; (2) unconsolidated beaches with coarse material such as boulders, cobbles, or gravel; and (3) sand beaches. Note that estuaries are discussed on a separate page.

Community zonation on steep rocky beach.

Community zonation on steep rocky beach.