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Riparian systems

Riparian systems occur along rivers and streams that periodically

crest their channel confines, causing flooding. They are also in evidence

in places in which a meandering channel creates new sites for plant life

to take root and grow. The soils and amount of moisture they contain

are influenced by the adjacent stream or river.

Oak Savannah System

An oak savannah ecosystem is a transition area between tallgrass prairie

and oak woodland which receives enough sunlight and shade for species of

both ecosystems to thrive simultaneously.  Oak savannah was once a common

occurrence in northern Indiana but has been encroached by development and

disallowed to regenerate by natural fire, grazing and drought disturbances.