Figure 1.1. Aquatic communities are
affected by the chemical, physical, and biological conditions of their habitat. When
base-line chemical habitat conditions are met, community level structural patterns and
habitat preference often correlate strongly with physical factors such as current velocity
(e.g. Gordon and others, 1992). The importance of physical habitat characteristics
have led many researchers (e.g. Bovee and others, 1998, Hogan and Church, 1989) to devise
field and modeling approaches to anticipate biological effects of changing hydrologic
regimes. |
