Sandy Scrubby Flatwoods on Rises and Knolls
Scenario model
Current ecosystem state
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Management practices/drivers
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Transition T1A
Long-Term Fire Suppression
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Transition T1B
Habitat Degradation
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Transition T1C
Introduction of Non--Native / Exotic Invasive Species
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Transition T1D
Modified for Desired Land Use
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Transition T1E
Human Alteration/ Transportation of Materials
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Restoration pathway R2A
Selective Removal of Oak Species
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Transition T2A
Complete Stand Removal
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Transition T2B
Introduction of Non--Native / Exotic Invasive Species
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Transition T2C
Modified for Desired Land Use
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Transition T2D
Human Alteration/ Transportation of Materials
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Transition T3A
Introduction of Non--Native / Exotic Invasive Species
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Transition T3B
Modified for Desired Land Use
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Transition T3C
Human Alteration/ Transportation of Materials
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Restoration pathway R4A
Removal of Undesirable Species
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Transition T4A
Modified for Desired Land Use
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Transition T4B
Human Alteration/ Transportation of Materials
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Restoration pathway R5A
Landscape and Habitat Restoration
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Restoration pathway R5B
Landscape and Habitat Restoration
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Transition T5A
Human Alteration/ Transportation of Materials
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Restoration pathway R6A
Modified Land Restoration
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No transition or restoration pathway between the selected states has been described
Target ecosystem state
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Description
These are open canopy flatwoods with widely spaced longleaf or slash pines in the canopy and a low shrubby understory dominated by scrub oaks and saw palmetto, often interspersed with areas of barren white sand. The shrub layer is not made entirely up of oaks, with grasses and dwarf shrubs making up a substantial portion of the cover. A variety of forbs may be present as well.
Resilience management
This habitat is maintained with fire return intervals of more than 5 but less than 15 years. This is to provide accurate habitat requirements for the Florida Scrub Jay, a species endemic to this habitat type. This interval would allow for maximum acorn production while preventing the oaks from attaining heights unfavorable to Florida Scrub Jays. This habitat should be allow to burn patchy, with homogeneous burns making the area unsuitable for the Scrub Jay. Patchy burns provide sufficient areas for nesting while also opening the subcanopy to allow the regrowth of oak species, which will eventually provide a new food source.
Description
This state describes the shift of the natural scrubby flatwoods community to a xeric hammock. Xeric hammocks are similar to mesic hammocks characterized by low closed canopy forests dominated by oak species. This community may form when fire has been excluded from the reference community as well as a decrease in hydrology within the system. This allows for the establishment for more xeric species. This community usually forms as small pockets within mesic hammocks and other well drained communities (i.e. scrubby flatwoods vegetation). While more commonly found along ridgelines in the central peninsula, xeric hammocks may be found in this MLRA as a result of extensive drainage and urbanization. A layer of emergent pines may be present, representing the old canopy structure before fire exclusion.
Resilience management
This community is maintained by natural disturbances which maintain vegetative structure and composition. Common natural disturbances which help maintain community composition and structure include wind from storm events which open the canopy to successive growth, ground fires to control the growth of the sub canopy, or infrequently flooding which may kill less flood tolerant species.
Description
That state describes the native scrubby flatwoods community after it has undergone habitat alteration. This state includes both a degraded and a restored scrubby flatwoods community. Restoration efforts can have been from a slightly mismanaged community such as one with few invasive species, to heavy restoration of reclaiming the natural area after urban development.
Submodel
Description
This state consists of Florida Department of Agriculture and Consumer Services (FDACS) Non-Native Category 1 Species list . More information on these species list can be found:
https://www.fdacs.gov/content/download/63140/file/Florida%E2%80%99s_Pest_Plants.pdf
or by contacting the UF / IFAS Center for Aquatic and Invasive Plants (http://plants.ifas.ufl.edu/), the UF / IFAS Assessment of Non-native Plants in Florida's Natural Areas (https://assessment.ifas.ufl.edu/), or the FWC Invasive Plant Management Section (http://myfwc.com/wildlifehabitats/invasive-plants/).
These species are common in areas where natural processes are interrupted via hydrology or fire regimes. The introduction of these species pose serious threats to endangered and threatened habitats and plants within Florida as they become outcompeted for habitats and nutrients.
Characteristics and indicators
Non-native species include species that exist outside of Florida's native range and introduced to the state by people, weather, or any other means.
Resilience management
This state can be found as a part of any other state and can completely destroy the native habitat if not properly managed. Restoration to natural communities after exotic invasion include practices such as mechanical and chemical removal.
Description
The following communities comprise the major land uses in the United States and the land uses receiving the majority of the conservation treatment that address soil, water, air, plant, and animal resources within the USDA.
Characteristics and indicators
These land uses consist of areas that are not completely naturalized (i.e. native habitat) and have been anthropogenically altered for commodity production.
Submodel
States 2 and 5 (additional transitions)
5.2. Open Transitional Managed Communities
5.5. Silviculture
Description
These areas include soils that were intentionally and substantially modified by humans for an intended purpose, commonly for terraced agriculture, building support, mining, transportation, and commerce. The alteration is of sufficient magnitude to result in the introduction of a new parent material (human-transported material) or a profound change in the previously existing parent material (human-altered material). They do not include soils modified through standard agricultural practices or formed soils with unintended wind and water erosion. When a soil is on or above an anthropogenic landform or microfeature, it can be definitely be associated with human activity and is assigned to a unique taxa, usually found as an "Urban land complex" within that communities natural soil properties (e.g., Immokalee sand-Urban land complex, 0 to 2 percent slopes).
Characteristics and indicators
Evidence of these areas include soils with manufactured items (e.g. artifacts) present in the profile, human altered-materials (e.g., deeply excavated soil) or human-transported material (e.g., fill), and position on or above anthropogenic landforms (e.g., flood-control levees) and microfeatures (e.g., drainage ditches). Detailed criteria regarding the identification of anthropogenic (artificial) landforms, human-altered materials, and human-transported material are in the "Keys to Soil Taxonomy" (Soil Survey Staff, 2014).
Submodel
Mechanism
This is driven by fire suppression within this community (>100 years), or very infrequent non-catastrophic fire which allows for the growth and development of shrubby oaks to established a closed canopy forested system.
Mechanism
This shift is caused by habitat degradation of the natural state. This includes management from clear cutting, site preparation for urbanization or commercial products, stand replacing catastrophic fires, or anything which might degrade the natural community and create habitat restoration / natural regrowth efforts possible.
Mechanism
The invasion of non-native or exotic species can be driven by a multitude of different environmental factors such as hydrology or changes in fire regimes. Typically once a change in one of the two factors mentioned above occurs, non-native or exotic invasive species become established and begin to compete with native species for habitat and nutrients.
Constraints to recovery
Recovery from non-native or exotic invasive species may be difficult due to many adaptations which allow them to outcompete and survive in intolerable conditions. Localized knowledge for each species must be known for best removal of it without harming the native environment, and often different treatments must be applied over one given area.
Context dependence
Growth of non-native and exotic invasive species can be rapid following a change in a natural stressor such as fire or hydrology which might have once kept the invasive specie at bay.
Mechanism
Modify the land for the desired land use. This may include the establishment of grazing species or the modification of land for the cultivation of crops of other desired products.
Mechanism
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Mechanism
This restoration is creating by a number of drivers. Overstory oak removal is first required to create suitable community structure (sparse to open overstory of pines) before other restoration efforts should be implemented. This removal of oaks can come from many efforts such as clear cuts and selective harvesting of oaks, and habitat restoration.
Mechanism
This transition is driven by a complete destruction of this community which would support the growth of shade intolerant pines as a pioneer scrubby flatwoods community. This would be a very patchy community with sparse ground cover and little to no shrub regrowth, and may require vegetative replanting if the native seed stock had been destroyed in the fire.
Mechanism
The invasion of non-native or exotic species can be driven by a multitude of different environmental factors such as hydrology or changes in fire regimes. Typically once a change in one of the two factors mentioned above occurs, non-native or exotic invasive species become established and begin to compete with native species for habitat and nutrients.
Constraints to recovery
Recovery from non-native or exotic invasive species may be difficult due to many adaptations which allow them to outcompete and survive in intolerable conditions. Localized knowledge for each species must be known for best removal of it without harming the native environment, and often different treatments must be applied over one given area.
Context dependence
Growth of non-native and exotic invasive species can be rapid following a change in a natural stressor such as fire or hydrology which might have once kept the invasive specie at bay.
Mechanism
Modify the land for the desired land use. This may include the establishment of grazing species or the modification of land for the cultivation of crops of other desired products.
Mechanism
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Mechanism
The invasion of non-native or exotic species can be driven by a multitude of different environmental factors such as hydrology or changes in fire regimes. Typically once a change in one of the two factors mentioned above occurs, non-native or exotic invasive species become established and begin to compete with native species for habitat and nutrients.
Constraints to recovery
Recovery from non-native or exotic invasive species may be difficult due to many adaptations which allow them to outcompete and survive in intolerable conditions. Localized knowledge for each species must be known for best removal of it without harming the native environment, and often different treatments must be applied over one given area.
Context dependence
Growth of non-native and exotic invasive species can be rapid following a change in a natural stressor such as fire or hydrology which might have once kept the invasive specie at bay.
Mechanism
Modify the land for the desired land use. This may include the establishment of grazing species or the modification of land for the cultivation of crops of other desired products.
Mechanism
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Mechanism
Mechanical, biological and chemical removal strategies include removing the non-native and exotic invasive species through various mechanisms. Localized knowledge for individual non-native or exotic invasive species is needed for specific management. Sometimes introduction of fire regimes may prevent or stop the growth of non-native or exotic invasive species, but many species are fire tolerant. Mechanical removal might include roller chopping, harvesting, or cutting and removal of invasive species. Chemical removal may include aerial dispersal from planes, or basal bark injection treatments.
Context dependence
Mechanical, biological and chemical removal of non-native and exotic invasive species is a time dependent process, with removal types taking long time to become effective.
Mechanism
Modify the land for the desired land use. This may include the establishment of grazing species or the modification of land for the cultivation of crops of other desired products.
Mechanism
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Mechanism
These practices include the restoration of both the hydrology and landscape in advance of revegetating the area (if needed).
Mechanism
These practices include the restoration of both the hydrology and landscape in advance of revegetating the area (if needed).
Mechanism
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Model keys
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