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of other machinery. |
All exotic plant control methods in pine rocklands should limit soil disturbance. Soil |
disturbances can create opportunities for invasion of the same exotic plant being removed or for |
new exotic or ruderal species. While utilizing techniques such as hand pulling or digging, soil |
disturbance should be reduced as much as possible. Chemical control or cutting of exotic plants |
can also be employed as alternatives to soil disturbing activities. |
Management Policy |
Exotic plants must be eliminated from pine rockland EEL sites or maintained at very |
low densities. Planting of these species on pine rockland EEL sites is forbidden. |
EEL Program, Management Plan, Part II β Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________ |
Page 36 |
4.5.2 Animals |
Populations of exotic animals in the pine rockland community should be evaluated for their |
impact to these habitat. In addition to feral domestic cats, already discussed Part I of this |
management plan (see Section 5.2.2.2), the following non-indigenous animals have the potential |
to impact pine rockland communities to varying degrees. Non-indigenous animals should be |
targeted for removal from pine rockland fragments, especially when they alter ecosystem |
processes, compete with native wildlife, or damage native plant species. Control of some species |
may be impractical or even impossible. |
Red imported fire ant β Fire ants may be controlled by treating individual mounds or through |
broadcast treatments. While broadcast treatments are more effective at eliminating entire |
colonies, this technique should generally be avoided in EEL pine rocklands so as not to impact |
populations of native ant species. There are many options for mound treatment, but the most |
appropriate and effective in natural areas is probably placing toxic bait directly on individual |
mounds. Biological controls are also being tested in Florida and may prove to be appropriate for |
EEL sites. These include a decapitating fly of the genus Pseudacteon which attacks fire ant |
workers and a fire ant disease, Thelohania solenopsae (Willcox and Giuliano 2006). |
European starling β Numerous products exist for controlling starlings, but many of these would |
likely disturb native birds as well. There are auditory repelling devices designed to target this |
species by emitting their distress calls, but experimentation should be done prior to installation to |
ensure that they only impact starlings. Even if effective, this method may only work in smaller |
pineland fragments where enough devices could be set up to cover the entire area. |
Parrots and parakeets β Managing for members of the Psittacidae family may not be possible. |
These birds are highly charismatic and are adored by the public. Any large-scale effort to control |
their populations will likely be met with outrage. The only option may be monitoring of nest |
cavities and manual removal of non-native birds. |
Lobate lac scale β Protected pine rockland areas should be monitored for the presence of this |
species and control measures implemented in the area if detected. Some woody plant species |
appear to be highly susceptible, including certain natives, e.g., wax-myrtle, strangler-fig, |
myrsine, swamp bay, and wild-coffee. Control can be accomplished in part by following regular |
subcanopy management recommendations β cutting and burning. In some cases, especially for |
rare plants, an insecticidal solution may be applied for several weeks to kill the scales. Treatment |
of lobate lac scale is particularly important in areas with rare bushes, especially Florida |
prairieclover and crenulate leadplant, which have been observed with infestations. |
Management Policy |
Control measures must be developed and implemented at pine rockland EEL |
preserves to halt and reverse the spread of invasive naturalized exotic animal species |
and to prevent the establishment of new exotic animal species populations |
EEL Program, Management Plan, Part II β Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________ |
Page 37 |
4.6 Fire Management |
Since pine rocklands are fire climax communities, fire management, along with exotic plant |
control, is one of the most critical techniques required to restore and manage pine rocklands. |
Site-specific recommendations and objectives for prescribed fires will be presented in Part III of |
this management plan. General recommendations for fire management are discussed here, |
including hardwood control, fire breaks, prescribed burning, and alternatives to prescribed |
burning. |
4.6.1 Hardwood Control |
Manual, mechanical, or chemical hardwood |
control will be required at many pine |
rockland sites to prepare for prescribed |
fires. The amount of woody material to be |
removed should be coordinated with the |
burn team. Hardwood and palm densities |
should be reduced prior to burning to |
reduce burn temperatures. An added benefit |
is the reduction of smoke levels during and |
post-fire, and less need for mop up. |
4.6.2 Fire Breaks |
Fire breaks should be maintained or installed around all pine rocklands. Construction of these |
fire breaks is necessary to permit access for fire fighting equipment and staff. Fire breaks are also |
essential to protection of structures and surrounding properties if and when wildfires occur. |
Only general considerations about fire breaks are made here in Part II. Their specific location on |
each site is discussed in Part III of this management plan. |
Though utilizing existing rights-of-way as fire breaks is preferred, fire break construction may |
require destruction of some pine rockland habitat. Nevertheless, fire breaks, and the consequent |
habitat destruction, are necessary to properly control a burn, and if fires cannot be set then the |
entire site will degrade, making the cost of limited habitat destruction worthwhile. Fire breaks |
should be cleared to bare rock or soil, which will not only prevent ground fires from crossing |
them, but will create habitat for pine rockland plant species and limit invasion of exotic and |
ruderal plant species (see Section 4.5.1 above). |
Management Policy |
Fire management on all pine rockland EEL sites shall concentrate on a prescribed |
burning program, along with hardwood control and installation and maintenance of |
fire breaks. The prescribed burning program must account for seasonality of burns, |
personnel necessary, the risk of wildfires, and actual application, including safety |
measures and effectiveness. Alternatives to prescribed burning will only be utilized as |
a last resort. |
Pineland with hardwood invasion |
Photo by Keith Bradley, IRC |
EEL Program, Management Plan, Part II β Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________ |
Page 38 |
4.6.3 Prescribed Burning |
As discussed in Section 2.6.1 above, large wind-driven fires historically swept across the South |
Florida landscape every three (3) to seven (7) years, especially in the spring and summer. More |
recently, as discussed in Section 3.6.1, fire frequency has been drastically reduced or eliminated |
on most sites, resulting in changed vegetation structure, decreased plant diversity, and increased |
fuel loads. To compensate for the lack of natural fires, prescribed burns should be applied to pine |
rocklands every three (3) to seven (7) years. |
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