ORAM Metric 5

This metric asks you to determine what type of wetland you are determining the score for. A list is given for the type of special wetlands you could encounter. The list is below and is linked to specific websites, if more information is needed about the wetland type.  A  mature “forested wetland” is defined in OAC Rule 3745-1-50(O) as “...a wetland class characterized by woody vegetation that is twenty feet [6 meters] tall or taller.” This definition follows the classification outlined in Cowardin et al. (1979). Coastal wetlands of Lake Erie are defined as all wetlands located within 1 km of the lake shore, or if further from the shore, those that are directly influenced by water level changes of the lake or their connecting waterways. The Oak Openings are sand-hills or dunes that are the remains of the old beach ridges of glacial Lake Warren. The dunes are 15 to 30 feet above the adjacent lowland and are underlain by an impervious blue clay. The higher dunes are well-drained, light colored and low in organic matter with poorly drained soils found in the depressions. Parts of the Oak Openings have been preserved as publicly-owned natural areas such as Irwin Prairie, Schwamberger Preserve, Oak Openings Metro Parks, Secor Metro Park and Wildwood Preserve. A category 1 wetland is one which supports limited wetland functions. They do not provide critical habitat for threatened or endangered species. They have low biodiversity, are considered to be hydrologically isolated, and are dominated by non-native plant species. Category 1 wetlands have no significant wildlife habitat or use. An example of a category 1 wetland would be wetlands that are acidic ponds created on mined lands because they have a very small abundance of plants. hydrologically isolated, and probably contain invasive plant species. In addition, if none of these wetland types are present, Metric 5 can be marked with a zero value.

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