The Apalachicola National Forest is in the
southeastern conifer forests ecoregion. Areas of the national forest with dry, sandy soils support
Florida longleaf pine sandhills and
east Gulf coastal plain near-coast pine flatwoods. Sandhills are
woodlands dominated by longleaf pine (
Pinus palustris). Pine flatwoods are forests and woodlands on broad, sandy flatlands. Both of these pine communities are sustained by frequent fires. Near the floodplains of spring-fed rivers grow
southern coastal plain hydric hammocks, dense forests of evergreen and deciduous hardwood trees.
Blackwater rivers support
southern coastal plain blackwater river floodplain forests of baldcypress (
Taxodium distichum) along their banks. Major rivers support diverse
east Gulf coastal plain large river floodplain forests. Recent habitat-modelling research with
GIS and vegetation-structure indicators has mapped ecological condition for
longleaf pine stands in the forest and determined that structural complexity rises with biodiversity and fire-resilience. It is also home to several wetland plant communities.
Southern coastal plain nonriverine basin swamps are large, seasonally flooded depressions of baldcypress (
Taxodium distichum) and swamp tupelo (
Nyssa biflora).
East Gulf coastal plain savannas and wet prairies are low, flat plains covered in grasses and sedges, which are seasonally flooded and maintained by frequent fires.
Southern coastal plain nonriverine cypress domes are small wetlands of pond cypress (
Taxodium ascendens) notable for their dome-shaped appearance. Within the
Munson Sand Hills sub-region of the forest, several temporary rain-filled ponds shelter unique assemblages of aquatic
amphibians and
insects. Fluctuations of water chemistry were correlated with insect community structure by one investigation. The Forest contains thousands of acres of
old growth Pond Cypress swamps (
cypress domes). In addition,
Bradwell Bay Wilderness contains about of old-growth
Slash Pine -
Swamp Tupelo swamps. ==Gallery==