and urbanization. The remaining 4.8 million acres (19,000 km2) of forest are isolated islands of habitat surrounded by cotton, corn, rice, and bean fields. Most of the surviving forests now occupy low ground dominated by water tolerant species. See also List of National Wildlife Refuges Holt Collier National Wildlife Refuge Yazoo National Wildlife Refuge References External links Theodore Roosevelt National Wildlife Refuge Complex homepage FWS profile of Theodore Roosevelt NWR National Wildlife Refuges in Mississippi