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PLOS ONE | https://doi.org/10.1371/journal.pone.0229147 February 21, 2020 15 / 15
FNAI Global Rank: G1
FNAI State Rank: S1
Federally Listed Species in S. FL: 10
State Listed Species in S. FL: 103
Pine rocklands are unique to southern Florida and the
Bahamas. In Florida they are found on limestone
substrates on the Miami Rock Ridge, in the Florida
Keys, and in the Big Cypress Swamp. Pine rocklands are
dominated by a single canopy tree, South Florida slash pine
(Pinus elliottii var. densa), a diverse hardwood and palm
subcanopy, and a very rich herbaceous layer. The flora of pine
rocklands is composed of a diverse assemblage of tropical
and temperate taxa. Many endemic plant taxa are also found
in this community. It is a fire maintained community,
requiring periodic fires to eliminate invading hardwoods,
assist in nutrient cycling, and to reduce duff layers. Pine
rocklands also provide critical foraging and nesting habitat
for a diverse array of wildlife, including five federally listed
animal species. While significant areas of pine rocklands are
now protected within preserves such as Everglades NP, Big
Cypress National Preserve, and the National Key Deer
Refuge, pine rockland fragments are still threatened on the
Miami Rock Ridge and in the Florida Keys. Pine rocklands
have been heavily impacted by outright destruction,
conversion to agriculture, fire suppression, exotic plant and
animal invasions, collecting pressure on plants and animals,
and alterations to hydrology. Significant work has now been
initiated to control exotic plant taxa in pine rocklands,
although much research needs to be conducted on restoring
heavily degraded sites.
Synonymy
The following terms have been applied in whole or in part to
plant communities of South Florida which are included in this
account of pine rockland: 414-other coniferous forest
(Florida Department of Administration 1976); South Florida
flatwoods (Soil and Water Conservation Service 1989); pine
forest (Duever et al. 1979); southern slash pine forest (Ward
1979); rockland pine forest (Davis 1943); pineland (Correll
and Correll 1982). The FLUCCS code for the pine rocklands
community includes: 411 (pine flatwoods), and 434
(hardwood/conifer mixed) (during regeneration).
Page 3-161
Pine Rocklands
Pine rocklands. Original photograph courtesy of U.S.
Fish and Wildlife Service.
Distribution
Pine rocklands are found in southern Florida, the Bahamas, and Cuba. In Florida,
they were historically found on limestone substrates in Miami-Dade County
along the Miami Rock Ridge from approximately North Miami Beach south and
west to Long Pine Key in what is now Everglades NP. Pine rocklands in the
Florida Keys are now restricted to the Lower Keys. Significant tracts of pine
rocklands occur on Big Pine Key, No Name Key, Little Pine Key, Cudjoe Key,
and Upper Sugarloaf Key in Monroe County. They also occcur in the Big
Cypress National Preserve in Collier County. Alexander (1953) has shown that a
small area of pine rockland once existed in the Upper Keys on Key Largo, but
has since undergone succession to rockland hammock. Some pinelands in areas
of limestone outcropping in Broward County may also be referable to this
community. The largest remaining contiguous areas of pine rockland are found