Natural Geography

Effective conservation often requires working across the relatively straight lines of humankind's jurisdictional boundaries, looking instead to more naturally defined areas.  "Natural geographies" like ecoregions, watersheds, and corridors provide valuable frameworks for shaping on-the-ground land and water protection efforts.

Natural Geography of Pennsylvania

  • Ecoregions of Pennsylvania

    Ecoregions reflect broad ecological patterns occurring on the landscape. Using ecoregions as a framework for assessing the distribution and status of species and ecosystems makes biological sense, compared to using politically derived lines like county, state or national boundaries.

    Read More

  • Watersheds

    Nearly two-thirds of Pennsylvania drains into the Atlantic Ocean via the Potomac, Susquehanna and Delaware Basins. Much of the remainder of the western half of the state is drained through the Ohio Basin towards the Gulf of Mexico, while a small portion is drained to the north via the Erie and Genesee basins.

    Read More

  • Corridors in Pennsylvania

    Wildlife corridors serve as migratory pathways and allow species to move through a landscape in search of better conditions. Corridors are especially important in Pennsylvania due to convergence of southern and northern species and large numbers of migratory species native to the state.

    Read More

Copyright © 2017 NatureServe. All Rights Reserved.