Ecological dynamics
The information presented in this ecological site description (ESD) and state-and-transition model (STM) were developed using archaeological and historical information, published and unpublished scientific reports, professional experience, consultation with technical experts, and NRCS inventories and studies. The information presented represents a complex set of plant community dynamic and environmental variables. Not all scenarios or plants are represented and included. Key indicator plants, animals, and ecological processes are described to help guide land management decisions and actions.
The Subtropical Scrub habitat of Miami Ridge/ Atlantic Coastal Strip is a community composed of evergreen shrubs, with or without a canopy of pines, and is found on dry, infertile, sandy ridges. Similar species are characteristic of scrub throughout the state and no one species is endemic to scrub habitat alone. Signature species of scrub habitats include shrubby oaks; myrtle oak (Quercus myrtifolia), sand live oak (Q. geminate), and Chapman’s oak (Q. chapmanii), as well as Florida rosemary (Ceratiola ericoides), sand pine (Pinus clausa), rusty staggerbush (Lyonia ferruginea) and saw palmetto (Serenoa repens). These species can either form a sparse or dense canopy interspersed with opening that consist of bare sand with a sparse cover of herbs and subshrubs. Species include threeawns (Aristida spp.), hairsedges (Bulbostylis spp.), sandyfield beaksedge (Rhynchospora megalocarpa), pinweeds (Lechea spp.), jointweeds (Polygonella spp.), and ground lichens (Cladonia leporine, C. prostrata, Cladina subtenuis, and C. evansii). When sand pines are present, they do not typically form a continuous canopy like pine flatwoods but occur as scattered individuals or clumps of individuals. Most scrub habitats occur on white sand and patches of bare sand with or without scattered clumps of ground lichens.
This ecosite typically occupies the ecotone between freshwater wetlands and pine flatwoods with shrubby flatwoods as an intermediate transition. Differences in vegetation composition and structure are the result of the frequency of fire within this community, which was historically determined by the local topography is now done through prescribed burning. These fires were typically started through lightning strikes during the growing season of March, April, or May and burned from surrounding grassland or forests into this community, where it would be naturally extinguished due to the absence of litter on the surface or flammability of certain species. Natural fires are not believed to burn entire habitats at once, but rather burn in patches. Fires that cause heterogeneity help influence the subsequent community recovery, allowing unburned patches to grow larger and provide cover, nest-sites, and acorns for wildlife species. In scrubs dominated by oak species, the fire interval is estimated to be intervals between 5 and 20 years to promote suitable habitat requirement for the Florida scrub-jay (Aphelocoma coerulescens), where habitat dominated by Florida rosemary is estimated to be intervals between 10 and 40 years based off the life history characteristics of Florida rosemary. The lower limit is set by the age at which rosemary begins to produce seed and the upper limit by the age at which the shrub begins to die back and seed production declines. Scrub habitats that are dominated by sand pine, the dominant scrub habitat type along the Miami Ridge is estimated to burn at intervals of more than 10 years based off the life history of pines, usually being killed by fire and re-establishing from seed. Periodic wind disturbances from hurricanes also affect the vegetative structure of this community, primarily by killing larger trees which opens the canopy allowing regrowth of new species.
When scrubs are prevented from burning for a long period of time, some of the oak species may grow up to tree size and create a closed canopy, transitioning the community into a xeric hammock. Sand pines have a generally low resistance to fire, and the even stands of pine make fire devastating, but is a requirement for reproduction. Sand pines need fire to open their seeds for germination, and over time (80 years) they become more susceptible to root rot and can die off allowing the oaks to grow. Without fire, scrub habitats lose plant and wildlife diversity, with dominant shrubs and trees increasing in cover percent. If a native scrub site has been replaced for agriculture or urban development but is abandoned, a pioneer scrub site may develop, and is dominated by invasive weed but also reference plants such as Florida rosemary, sand pine, and sand live oak.
Due to the dry upland nature of these sites, the scrub habitat along the Miami Ridge/ Atlantic Coastal strip has declined in distribution and quality as a part of anthropogenic activities. While few fragmented scrub habitats still occur along this ecoregion, fire regimes and hydrology have been altered to create less productive and natural habitats. Before development boomed in the mid-20th century, this community formed a near continuous band from Brevard County to Broward County along the coastal ridge (Steinberg, 1976).
In areas that are highly urbanized and prescribed fires and smoke act as a nuisance upon the community, mechanical disturbance has been suggested as an alternative management practice as chopping or mowing. In areas that have had habitat loss, intensive vegetation establishment and maintenance methods such as irrigation are needed for best results. This includes reestablishing native species which require less maintenance and are more easily established.
Representative sites along the Miami Ridge/ Atlantic Coastal Strip include County Line Scrub Preserve and Tivoli Sands Preserve.
State 1
High Pine and Scrub
This state consists of mesic or xeric woodlands or shrublands found on dry infertile sandy ridges with a canopy, if present, open and consisting of pine or a mixture of pine and deciduous hardwoods.
Characteristics and indicators. No one species is charactistic of this state as similar species in scrub habitat are found throughout the state. Most scrub habitat occur with patches of bare sand with or without scattered clumps of ground lichens.
Dominant resource concerns
Community 1.1
Scrub
This community is composed of evergreen shrubs, with or without a canopy of pines, and is found on dry, infertile, sandy ridges. These communities are the oldest natural communities in Florida and were formed as sea levels retreated during the Pliocene era. They were formed from sandy island ridges of stabilized coastal dunes when the Atlantic Ocean was retreating, creating these patches of higher isolated areas. In the Miami Ridge / Atlantic Coastal Strip ecoregion this community is at its southern extent and is only seen in a few fragmented natural areas.
Resilience management. This is a fire maintained community, but is not easily ignitable and has average fire return intervals of 10 to 40 years. They burn less frequently due to lower grassy groundcover as well as bare spots which cause the habitat to burn unevenly. Without fire in the system, this scrub habitat may begin to allow woody species to become established.
Dominant plant species
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sand live oak (Quercus geminata), tree
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Chapman oak (Quercus chapmanii), tree
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myrtle oak (Quercus myrtifolia), tree
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sand pine (Pinus clausa), tree
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rusty staggerbush (Lyonia ferruginea), shrub
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saw palmetto (Serenoa repens), shrub
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sand heath (Ceratiola ericoides), shrub
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threeawn (Aristida), grass
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hairsedge (Bulbostylis), grass
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sandyfield beaksedge (Rhynchospora megalocarpa), grass
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cup lichen (Cladonia), other herbaceous
Community 1.2
Scrubby Flatwood
This community is a transition of the natural scrub community when fire has been excluded for a long period of time (>40 years). It is characterized by a sparse, open overstory of pines, usually sand pine or slash pine, and a low cover of scrubby species such as sand live oak and Chapman's oak. Many scrub areas that remain in the Miami Ridge / Atlantic Coastal Strip ecoregion have been fragmented and are unable to use prescribed burning as a management technique due to the high urban density, leaving much of these areas to transition to scrubby flatwoods.
Dominant plant species
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Florida slash pine (Pinus elliottii var. densa), tree
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sand live oak (Quercus geminata), tree
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myrtle oak (Quercus myrtifolia), tree
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Chapman oak (Quercus chapmanii), tree
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saw palmetto (Serenoa repens), shrub
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inkberry (Ilex glabra), shrub
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rusty staggerbush (Lyonia ferruginea), shrub
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threeawn (Aristida), grass
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broomsedge bluestem (Andropogon virginicus), grass
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little bluestem (Schizachyrium), grass
Pathway 1.1A
Community 1.1 to 1.2
This transition is driven by the absence of fire from the scrub community. Natural fire return intervals are estimated every 10 to 40 years for the proper management of scrub jay habitat. As fire is excluded from the system woody species begin to grow and become established.
Pathway 1.2A
Community 1.2 to 1.1
This transition is driven by proper management techniques for the scrub habitat. This may include the reestablishment of fire into the community which removes the woody shrubs, returning to a scrub habitat. In high density areas where fire is not allow, this management technique can be replaced with the mechanical removal of species through mechanical roller chopping. While effective at removing undesirable species the effects of mechanical removal may disturb the soil and allow for the invasion of non-native or exotic species.
State 2
Oak Pine Forest
This state describes the transition from scrub to an established closed oak community with emergent pines. This state is formed when fire has been absent from the scrub community for a long period of time (>100 yr.).
Dominant resource concerns
Community 2.1
Xeric Hammock
This is an evergreen forest on well-drained sandy soils. The low canopy is closed and dominated by oak species with an emergent canopy of pine. Emergent pine is typically characterizing of a transitioned scrub habitat that hasn't been burned in a long time (>100 yrs). As fire becomes more absent, oaks and other woody species eventually shade the understory and creates a layer of leaf litter, covering open patches of sandy and leading to more shaded, mesic ground conditions.
Dominant plant species
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sand live oak (Quercus geminata), tree
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Chapman oak (Quercus chapmanii), tree
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sand post oak (Quercus margaretta), tree
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sand pine (Pinus clausa), tree
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Florida slash pine (Pinus elliottii var. densa), tree
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saw palmetto (Serenoa repens), shrub
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rusty staggerbush (Lyonia ferruginea), shrub
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American beautyberry (Callicarpa americana), shrub
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pineland threeawn (Aristida stricta), grass
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sandyfield beaksedge (Rhynchospora megalocarpa), grass
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rosette grass (Dichanthelium), grass
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airplant (Tillandsia), other herbaceous
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greenbrier (Smilax), other herbaceous
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goldenrod (Solidago), other herbaceous
State 3
Invasive Non-Native Community
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/).
This community will not represent every possibility of invasive species but rather the most common in these areas.
Characteristics and indicators. Non-native species include species that exist outside of Florida's natural 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, biological, and chemical removals.
Dominant resource concerns
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Sheet and rill erosion
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Wind erosion
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Subsidence
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Organic matter depletion
State 4
Managed Resource Areas
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) but are not completely altered by anthropogenic means.
Dominant resource concerns
Community 4.1
Rangeland
Rangelands are described as lands on which the indigenous vegetation is predominately grasses, grass-like plants, forbs, and possibly shrubs or dispersed trees. Existing plant communities can include both native and introduced plants. Primary export from Florida ranges are cattle and have been present in the state since their first introduction by Spanish explorers in 1521. This is the reference community for this state because it requires very little alterations to the landscape for grazing species.
Rangelands provide a diversity of ecosystems and also provide a diverse and significant production of economic benefits and ecosystem goods and services. Livestock production along with sustainable wildlife populations provide for the major direct economic benefits, but also tourism, recreational uses, minerals/energy production, renewable energy, and other natural resource uses can be very significant. Vital ecosystem contributions include clean water, clean air, fish/wildlife habitat, as well as intangible considerations such as historical, cultural, aesthetic and spiritual values.
Resilience management. Grazing, by both domestic livestock and wildlife, is the most common ecological management process, with fire and weather extremes also being significant ecological factors. For information regarding specific cattle grazing techniques please contact your local NRCS office.
Community 4.2
Open Transitional Managed Communities
This is an area that is managed to maintain open land before shifting to another community. These communities are often used as transitional periods from one practice to another and could lead to an abandoned / fallow field.
Community 4.3
Improved Pasture
Pasture is a land use type having vegetation cover comprised primarily of introduced or enhanced native forage species that is used for livestock grazing. Pasture vegetation can consist of grasses, legumes, other forbs, shrubs or a mixture. The majority of these forages are introduced, having originally come from areas in other states or continents. Most are now naturalized and are vital components of pasture based grazing systems.
Pasture lands provide many benefits other than forage for livestock. Wildlife use pasture as shelter and for food sources. Well managed pasture captures rainwater that is slowly infiltrated into the soil which helps recharge groundwater. Many small pasture livestock operations are near urban areas providing vistas for everyone to enjoy. Pasture is the basis of any livestock operation that is truly sustainable. It is especially important as livestock grazers continues to experience extraordinarily high fuel and other input costs.
Resilience management. Pastures receive periodic renovation and cultural treatments such as tillage, fertilization, mowing, weed control, and may be irrigated. For more information regarding specific pasture management please contact your local NRCS office.
Community 4.4
Agriculture
The agriculture industry includes cultivated crops, aquaculture, and apiculture. Cultivated cropland includes areas used for the production of adapted crops for harvest. These areas comprises land in row crops or close-grown crops that are in a rotation with row or close-grown crops. Primary export from Florida consists of fruits, greenhouse and nursery products, sugar cane, and the signature export of citrus. Aquaculture includes the cultivation and maintenance of aquatic plants, aquatic reptiles, crustaceans, food/ ornamental fish, shellfish, and other miscellaneous species for harvesting. Apiculture includes the maintenance of honeybees and hives to provide beeswax, honey/ other edible bee products, crop pollination services, and sales of bees to other beekeepers. These areas have been modified resulting in land clearing practices and hydrologic management to fit the growers needs.
Resilience management. Major natural resource concerns facing agricultural lands include: (1) erosion by wind and water, (2) maintaining and enhancing soil quality, (3) water quality from nutrient and pesticides runoff and leaching, and (4) managing the quantity of water available for irrigation. For more specific information regarding cropland please contact your local NRCS office.
Community 4.5
Silviculture
Silviculture is land used in controlling the establishment, growth, composition, health, and quality of forests and woodlands to meet the diverse needs and values of landowners and society such as wildlife habitat, timber, water resources, restoration, and recreation on a sustainable basis. These are forestry practices that include thinning, harvesting, planting, pruning, prescribed burning and site preparation, for managed goals such as wildlife habitat creation or harvesting. Many managed silvicultural lands in Florida include tree plantations for growth of tropical ornamental species such as palms; and lumber, pulp, and paper species such as slash pine, longleaf pine, cypress, and eucalyptus.
This community also include management practices of agroforestry, the intentional mixing
of trees and shrubs into crop and/or animal production systems to create environmental, economic and social benefits. This is included in this community and not any other state because the primary management is for tree species. This may include practices such as riparian forest buffers, windbreaks, forest farming, silvopasture, and alley cropping.
Resilience management. Management of silvicultural lands require specific prescriptions based on the management goals for the stand, and may include thinning, harvesting, planting, pruning, prescribed burning and site preparation. For more information regarding specific management for silviculture practices please contact your local NRCS office.
Pathway 4.1A
Community 4.1 to 4.2
This pathway is driven by land clearing practices that consists of removing the existing vegetation from the habitat and altering the habitat to prepare for modified land use.
Pathway 4.2A
Community 4.2 to 4.1
This pathway is driven by the restoration of the native habitat for the use of rangeland. This includes restoration of both the hydrology and landscape in advance of replanting native species. This is a time-consuming process and often results in second-hand community structure. Once restored to a natural capacity the introduction of grazing species to the system creates a managed rangeland.
Pathway 4.2B
Community 4.2 to 4.3
This pathway is driven by preparing the land for pasteurization. This includes the planting of vegetation consisting of grasses, legumes, other forbs, shrubs or a mixture that will provide preferred forage for managed grazing species.
Pathway 4.2C
Community 4.2 to 4.4
This pathway is driven by the preparation of land for agricultural uses. This change is dependent on the type of agricultural community is being created, but often depends on the growing, maintenance, and cultivation of an agricultural product for consumers. This community may require modification to the land to fit the hydrologic requirement of the growing crop.
Pathway 4.2D
Community 4.2 to 4.5
This pathway is driven by the preparation of the land for silvicultural purposes. This change is dependent on the type of silvicultural product being cultivated, as many different practices require different growth requirement.
Pathway 4.3A
Community 4.3 to 4.2
This pathway is driven by land clearing practices that consists of removing the existing vegetation from the habitat and altering the habitat to prepare for modified land use.
Pathway 4.3B
Community 4.3 to 4.4
This pathway is driven by the preparation of land for agricultural uses. This change is dependent on the type of agricultural community is being created, but often depends on the growing, maintenance, and cultivation of an agricultural product for consumers. This community may require modification to the land to fit the hydrologic requirement of the growing crop.
Pathway 4.3C
Community 4.3 to 4.5
This pathway is driven by the preparation of the land for silvicultural purposes. This change is dependent on the type of silvicultural product being cultivated, as many different practices require different growth requirements.
Pathway 4.4A
Community 4.4 to 4.2
This pathway is driven by land clearing practices that consists of removing the existing vegetation from the habitat and altering the habitat to prepare for modified land use.
Pathway 4.4B
Community 4.4 to 4.5
This pathway is driven by the preparation of the land for silvicultural purposes. This change is dependent on the type of silvicultural product being cultivated, as many different practices require different growth requirements.
Pathway 4.5A
Community 4.5 to 4.2
This pathway is driven by land clearing practices that consists of removing the existing vegetation from the habitat and altering the habitat to prepare for modified land use.
State 5
Human Altered & Human Transported Areas
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., Urban land, 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 or deeply plowed 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).
Dominant resource concerns
Community 5.1
Reclaimed Areas
Reclaimed areas are areas that have been modified through anthropogenic means that are restored to a natural or second-hand natural community. Areas that can be reclaimed are any intensely urbanized areas, and may be required to be reclaimed after urban use (e.g., active mines must be reclaimed). Examples of reclaimed lands may be shut down phosphate mining operations, superfund sites, or brownfields. These practices include the identification, removal, and stockpiling soil materials before altering the land, and revegetation and replacement of soil materials after altering the land. This also applies to nearby urban areas that have been adversely affected by the anthropogenic activities.
Community 5.2
Urban
This urban community consists of development for human use. Urban areas include a variety of land uses, e.g., inner city or urban core, industrial and residential areas, cemeteries, parks, and other open spaces; the overall function which may benefit the quality of human life. These often form an urban soil mosaic, where the natural landscape has been fragmented into parcels with distinctive disturbance and management regimes and, as a result, distinctive characteristic soil properties.
Within this community there are three different levels of urbanization, based off population dynamics, residential density, and intensity of development. These are labeled as low-intensity, medium-intensity, and high-intensity urban areas, which can eventually be split apart into its own separate state. Low-intensity urban areas may consist of single dwelling homes with little impact on the surrounding community which still somewhat represents the natural community (e.g., represents natural landscape, hydrology, and vegetation) , other examples of this are urban parks, cemeteries, or campgrounds with little urban development. Medium-intensity urban areas consist of larger urban dwellings with some natural features, but have been modified to meet urban needs (e.g., towns). High-intensity urban areas are areas of heavily modified areas with complete alterations of the natural landscape, hydrology, and vegetation to support a very large population, which once constructed is permanently altered (e.g., metropolis areas).
Community 5.3
Non-Reclaimed Areas
Non-reclaimed areas are areas that have been modified through anthropogenic means that are unable to be restored to a natural or second-hand natural community. Areas that cannot be reclaimed are areas under active mining status or mined areas before the Phosphate Land Reclamation Act in 1975, which leaves shut down operations alone. These areas also include fallow mines that have been flooded and are now permanent bodies of water.
Community 5.4
Landfills
This is an anthropogenic site for the disposal of waste material. It includes manufactured layers (artificial, root limiting layer below the soil surface) that are representative of human altered and human transported sites. These layers are often alternative between natural fill material and geotextile liners, asphalt, concrete, rubber or plastic that are built up and can rise above the surrounding landscape by 30 meters or more often impeding water, gas, or roots from moving through the profile.
Pathway 5.1A
Community 5.1 to 5.2
This shift in communities is driven by clearing and developing the land for the desired community.
Pathway 5.1B
Community 5.1 to 5.4
This transition is driven by the deposition of manufactured layers along with anthropogenic waste which is consistently built upon.
Pathway 5.2A
Community 5.2 to 5.1
This transition is driven by the revegetation, reestablished hydrology, and replacement of displaced soil materials after altering the land.
Pathway 5.2B
Community 5.2 to 5.3
This transition is driven from heavy industrial or urban development which causes the land to become non-reclaimable. This transition is rare due to the many environmental laws and regulations that must be followed when developing.
Pathway 5.2C
Community 5.2 to 5.4
This transition is driven by the deposition of manufactured layers along with anthropogenic waste which is consistently built upon.
Pathway 5.3A
Community 5.3 to 5.1
This transition is driven by the revegetation, reestablished hydrology, and replacement of displaced soil materials after altering the land.
Transition T1A
State 1 to 2
This transition is driven by an absence of fire within a scrub community for a long time. This allows the establishment of woody species and over time, they grow upwards to form a canopy that shades the understory and creates a layer of leaf litter, covering open patches of sand and more mesic ground conditions.
Constraints to recovery. The natural fire return interval for scrub communities is estimated from 10 to 40 years, the absence of fire to let this community be established would be around 100 years without the presence of fire in the community.
Transition T1B
State 1 to 3
The invasion of non-native or exotic species can be driven by a multitude of different environmental factors such as changes in natural hydroperiods or 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 altered 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 frequency or natural hydroperiods which might have once kept the invasive species at bay.
Transition T1C
State 1 to 4
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.
Transition T1D
State 1 to 5
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Restoration pathway R2A
State 2 to 1
This restoration is driven by overstory mortality which will open the canopy and allow for the reestablishment of scrub species. Overstory mortality may be natural or anthropogenic, and can include extreme storm events, clear cutting, or catastrophic fires.
Transition T2A
State 2 to 3
The invasion of non-native or exotic species can be driven by a multitude of different environmental factors such as changes in natural hydroperiods or 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 altered 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 frequency or natural hydroperiods which might have once kept the invasive species at bay.
Transition T2B
State 2 to 4
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.
Transition T2C
State 2 to 5
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Restoration pathway R3A
State 3 to 1
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 might 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 both removal types taking long times to be considered effective.
Restoration pathway R3B
State 3 to 2
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 might 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 both removal types taking long times to be considered effective.
Transition T3A
State 3 to 4
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.
Transition T3B
State 3 to 5
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Restoration pathway R4A
State 4 to 1
These practices include the restoration of both the natural hydroperiods and landscape in advance of revegetating the area (if needed).
Restoration pathway R4B
State 4 to 2
These practices include the restoration of both the natural hydroperiods and landscape in advance of revegetating the area (if needed).
Transition T4A
State 4 to 5
This transition is driven by the alteration and/ or transportation of materials via anthropogenic means.
Restoration pathway R5A
State 5 to 4
These practices include the restoration of both the natural hydroperiods and landscape in advance of revegetating the area (if needed).