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A Natural Region is a major, generalized unit of the landscape where a distinctive assemblage of natural features is present. It is part of a classification system that integrates several natural features to identify a natural region, including:
A Section is a subunit of a natural region where sufficient differences are evident such that recognition is warranted.
A natural community is a group of organisms, flora and fauna, that are interrelated with each other and their environment. They are identified by such natural features as:
Some natural community types, such as mesic prairies or upland forests, can be distributed across multiple regions. This distribution may represent the limits of these communities that provide habitat for species not commonly found in a Natural Region or Section.
Indiana has many different types of natural communities. Below is a list of different types of natural communities. If an example of the natural community is located within a published nature preserve, the name and link will be provided below it.