LAND MANAGEMENT:
Preserving and Restoring Biodiversity
policies
| fire | non-native
species | restoration | satellite
tracts
PowerPoint files Archbold's
11 worst
invasive plants | invasive plants training session
Archbold Biological Station has the great privilege and responsibility
of caring for 8,600 acres of land in south-central Florida. The 5,000-acre
Station property is preserved as a matrix of pristine native vegetation,
including oak and rosemary scrubs, pine flatwoods, and cutthroat seeps and
seasonal wetlands. The adjacent 3,600-acre Reserve property is a mixture
of natural areas and extensive cattle pastures. Habitat management
practices are dictated by both research and conservation priorities. A land
management plan for the Station and the Reserve is being developed.
The Station also manages the 10,300-acre Buck Island Ranch, site of the MacArthur
Agro-ecology Research Center.
Land Management Policies. All property is fenced and posted. Pets are not
permitted on the property. Relocation of native organisms onto the property
is not permitted. Firelanes
and roads provide access and fire control. Research programs are coordinated to minimize
their effects on one another or on populations of threatened or endangered native species.
Certain scientific collecting and experimentation is permitted after consultation with
staff Research Biologists.
Lightning fires were prevalent throughout the region in presettlement times,
creating habitats that are pyrogenic and require
frequent, patchy fires to maintain biodiversity. Therefore, fire is a key component of both
research and land management at Archbold. The Station's fire
management plan strives to balance the responsibility of maintaining the
Station's biodiversity with the needs of research. Natural and prescribed fires are mapped
in detail and these maps are digitized into the GIS. A detailed 40-year GIS
fire history database, plus ample opportunity to prescribe and conduct research burns, provides one of
the finest research sites for fire ecologists anywhere in the United States. Prescribed
burning is used to maintain native species composition and structure, or to test
hypotheses about responses of native elements or systems to different fire regimes.
Land Management at Archbold
also focuses on
control of the many non-native species that threaten Florida
ecosystems. The primary focus is on invasive
plants. Plants from around the world can flourish in southern
Florida’s sub-tropical climate. Unfortunate introductions of these
plants, whether purposeful or accidental, have led to thousands of acres
of infestations across the state. On Station properties, non-native plants
are limited primarily to disturbed areas. The Station has an Exotics
Treatment and Monitoring Plan. Non-native plants are treated through
mechanical means and with herbicides. Many species require more than one
treatment to eliminate individual populations. In addition to plants,
non-native animals (including wild hogs and feral cats) are excluded from
the property to the greatest extent possible.
The
addition of the Reserve
(in 2002) provides additional opportunities for landscape-scale
restoration projects. These projects will include both wetlands and
uplands. A plan for the restoration of some of the areas of the Reserve is
being developed.
The Station also owns three nearby
satellite
tracts. The Malcolm and Jeanne Watters Marsh is a 17-acre (6.9-ha) tract
between Lake June and Lake Henry. The Harris Tract is an 8-acre (3.2-ha) shrub marsh on
Lake Istokpoga, one of the largest lakes in the state. The Henry T. and Helen C. Price
Memorial Tract contains 8 acres (3.2-ha) of scrub, hammock, swamp, and marsh habitat on
the north shore of Lake Placid. These small tracts provide research opportunities in many
habitats not represented on the Station's main property or on the Ranch.
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