Middle St. Johns - Florida Department of Environmental Protection

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206 Water Quality Assessment Report: Middle St. Johns The passage of the Florida Watershed Restoration Act increased the emphasis on implementing BMPs to reduce nonpoint source pollutant discharges from agricultural operations. Recognizing that the development and adoption of BMPs might take several years, the legislature authorized the use of Interim Measures (IMs) during the BMP development process for agricultural operations. In essence, IMs are a set of logical conservation practices designed to reduce agricultural nonpoint pollutant discharges based on current knowledge and best professional judgment. These practices will evolve into more formal BMPs as better scientific data on their effectiveness is obtained. Once the Florida Department of Agriculture and Consumer Services adopts BMPs, the Department is charged with verifying their effectiveness in reducing agricultural nonpoint sources. Once verified, agricultural operations that have implemented BMPs will receive a waiver of liability and presumption of compliance similar to that granted a developer who obtains an environmental resource permit. OTHER STRATEGIES The success of implementing nonpoint source TMDL load allocations will require variety, creativity, and stakeholder commitment to watershed management and personal stewardship. In addition to BMPs, other possible strategies for meeting TMDLs, restoring water quality, and preventing the further degradation of Florida’s watersheds include cost sharing, waste minimization, pollution prevention, new approaches to land use design and development, and pollutant trading. The Department will assemble a Technical Advisory Committee to help develop a pollutant-trading rule, which must be reviewed by the legislature prior to its adoption. The Department will also continue to work with local stakeholders on TMDL allocation issues and implementation plans. Sources of Information For additional information on the Department’s Watershed Management Program and TMDLs, please contact the following basin coordinators: • Southwest Florida and Lake Okeechobee, Pat Fricano (850) 245-8559 • Southeast Florida and Ochlockonee-St. Marks Basins, Kevin O’Donnell (850) 245-7607 • Northwest and Central Florida, Mary Paulic, (850) 245-8560 • Northeast Florida and Suwannee Basin, Jennifer Gihring (850) 245-8418 • West Central Florida and Tampa Bay Region, Tom Singleton (850) 245-8561 For information on establishing and implementing TMDLs, contact Jan Mandrup- Poulsen at (850) 245-8448. Additional information is available on the Department’s Web site at www.dep.state.fl.us/water/watersheds/index.htm.
Water Quality Assessment Report: Middle St. Johns 207 Appendix B: Ecological Resources in the Middle St. Johns Basin Table B.1: Areas and Descriptions of Natural Communities in the Middle St. Johns Basin (Community descriptions are adapted from Cox et al., 1994) Community Percent of Acres Type Basin Area Community Description Uplands Dry prairie 54,096.80 4.15% These large native grass and shrub communities are found on flat terrain intermixed with cypress swamps, bayheads, freshwater marshes, and hardwood hammocks. This class includes palmetto prairies, which are pine flatwoods where the overstory has been removed. Pinelands 170,375.99 13.08% Pinelands occur on flat, sandy terrain. Dominant overstory trees are longleaf pine, slash pine, or pond pine. This community includes pine plantations. Fire is a major source of natural disturbance. Dominance by longleaf pine occurs on drier, well-drained sites. Pond pine occur on poorly drained sites, and slash pond occur on intermediate or moderately wet sites. Sand pine scrub 103,385.55 7.94% Sand pine scrub, a very dry community, occurs on extremely well-drained, sterile sands deposited along ridges or former dunes. This community is dominated by an overstory of sand pine with an understory of myrtle oak, Chapman's oak, sand live oak, and scrub holly. Ground cover is usually sparse. Fire is an important land management tool that results in even-aged stands within regenerated sites. Sandhill 40,365.38 3.10% Sandhill communities occur on rolling terrain with deep, well-drained, dry sandy soils. The overstory is dominated by longleaf pine, with an understory of turkey oak and bluejack oak. Fire is important for the control of hardwood species and continued generation of the sandhill community. Xeric oak scrub 41,532.18 3.19% This community occurs in areas of deep sands. It comprises clumped patches of low-growing xeric oak species. Common species are myrtle oak, scrub plum, sand live oak, Chapman’s oak, and saw palmetto. Fire is an important factor in maintaining oak scrub. Mixed pinehardwood forest Hardwood hammock and forest 23,947.90 1.84% 81,826.79 6.28% This community contains a relatively equal mix of hardwood and pine species. Common tree species are beech, mockernut hickory, water oak, loblolly pine, dogwood, slash pine, longleaf pine, and live oak. These major upland hardwood-dominated associations are found on fairly rich sandy soils. They can occur across a range of soil moisture conditions, including hydric, mesic, and xeric.
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Middle St. Johns - Florida Department of Environmental Protection

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