A previously cultivated field left fallow, which supports a mixture of grasses, forbs and shrubs, usually dominated by exotic species.

A field discovered prior to the report year.

A successional habitat composed of a mosaic of shrubs, scattered trees, and herbaceous vegetation.

an area that was formerly cultivated or grazed and where woody vegetation has begun to invade. If left undisturbed, it will eventually succeed into a forest. Many old fields occur at sites marginally suitable for crop production or pasturing. Old fields are highly variable in the Northeast, depending on soil, land use history, and management.

An area that had once been plowed and worked up as an agricultural field. Once abandoned, quick-growing, sun-loving grasses and shrubs re-colonize the area.