Plant colonization after complete and partial removal of disturbed soils for wetland restoration of former agricultural fields in Everglades National Park

Dalrymple, George H.; Doren, Robert F.; O'Hare, Nancy K.; Norland, Michael R.; Armentano, Thomas V.

doi:10.1672/0277-5212(2003)023[1015:pcacap]2.0.co;2

Cited by 38 publications

(36 citation statements)

References 8 publications

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“…The area originally consisted of oligotrophic sawgrass (Cladium jamaicense Crantz) prairies and short-hydroperiod pinelands but was converted to farmland during the early part of the twentieth century (4,14). As preparation for the conversion to agriculture, intensive rock plowing pulverized underlying limestone bedrock and created coarse-textured, well-drained soil suitable for vegetable production (12).…”

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Genetic and Functional Variation in Denitrifier Populations along a Short-Term Restoration Chronosequence

Smith

Ogram

2008

Appl Environ Microbiol

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Complete removal of plants and soil to exposed bedrock, in order to eradicate the Hole-in-the-Donut (HID) region of the Everglades National Park, FL, of exotic invasive plants, presented the opportunity to monitor the redevelopment of soil and the associated microbial communities along a short-term restoration chronosequence. Sampling plots were established for sites restored in 1989, 1997, 2000, 2001, and 2003. The goal of this study was to characterize the activity and diversity of denitrifying bacterial populations in developing HID soils in an effort to understand changes in nitrogen (N) cycling during short-term primary succession. Denitrifying enzyme activity (DEA) was detected in soils from all sites, indicating a potential for N loss via denitrification. However, no correlation between DEA and time since disturbance was observed. Diversity of bacterial denitrifiers in soils was characterized by sequence analysis of nitrite reductase genes (nirK and nirS) in DNA extracts from soils ranging in nitrate concentrations from 1.8 to 7.8 mg kg ؊1 . High levels of diversity were observed in both nirK and nirS clone libraries. Statistical analyses of clone libraries suggest a different response of nirS-and nirK-type denitrifiers to factors associated with soil redevelopment. nirS populations demonstrated a linear pattern of succession, with individual lineages represented at each site, while multiple levels of analysis suggest nirK populations respond in a grouped pattern. These findings suggest that nirK communities are more sensitive than nirS communities to environmental gradients in these soils.The Hole-in-the-Donut (HID) is a 4,000-ha region within Everglades National Park, FL. The area originally consisted of oligotrophic sawgrass (Cladium jamaicense Crantz) prairies and short-hydroperiod pinelands but was converted to farmland during the early part of the twentieth century (4, 14). As preparation for the conversion to agriculture, intensive rock plowing pulverized underlying limestone bedrock and created coarse-textured, well-drained soil suitable for vegetable production (12). Farming in the HID ceased in 1976, and the abandoned farmland in this area was soon invaded by Schinus terebinthifolius Raddi (Brazilian pepper), an exotic shrub native to South America.Everglades National Park initiated efforts to restore the HID in 1996 by complete removal of all plants and much of the soil down to bedrock. An individual plot within the HID is cleared at one time, such that plots representing a chronosequence after clearing are present at one time (4). Following clearing, individual plots are left undisturbed to allow natural establishment of microbial communities and colonization by native wetland plants. This staggered approach to clearing provides an excellent opportunity to study the redevelopment of soil, microbial communities, and ecosystem processes over a short-term chronosequence in this wetland.A previous report on succession of methanogenic communities at this site indicated shifts within species and act...

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confidence: 99%

Genetic and Functional Variation in Denitrifier Populations along a Short-Term Restoration Chronosequence

Smith

Ogram

2008

Appl Environ Microbiol

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“…Once consisting of oligotrophic sawgrass (Cladium jamaicense Crantz) prairies and short hydroperiod pinelands, the HID was subjected to agricultural land use practices for 60 years (10,20). Preagriculture, HID soils were characterized as shallow, poorly drained, and low in nutrient marls (19).…”

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confidence: 99%

“…Plots within the HID are cleared one at a time, so plots representing a chronosequence of times since being cleared can be studied simultaneously. Several years will be required to completely clear the S. terebinthifolius Raddiaffected area (10). Following clearing, individual plots are left undisturbed to allow the natural restoration of microbial communities and colonization by native wetlands plants.…”

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confidence: 99%

Structure and Function of Methanogens along a Short-Term Restoration Chronosequence in the Florida Everglades

Smith

Castro

Ogram

2007

Appl Environ Microbiol

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The removal of plants and soil to bedrock to eradicate exotic invasive plants within the Hole-in-the-Donut (HID) region, part of the Everglades National Park (Florida), presented a unique opportunity to study the redevelopment of soil and the associated microbial communities in the context of short-term primary succession and ecosystem restoration. The goal of this study was to identify relationships between soil redevelopment and activity and composition of methanogenic assemblages in HID soils. Methane production potentials indicated a general decline in methanogenic activity with restoration age. Microcosm incubations strongly suggested hydrogenotrophic methanogenesis as the most favorable pathway for methane formation in HID soils from all sites. Culture-independent techniques targeting methyl coenzyme M reductase genes (mcrA) were used to assess the dynamics of methanogenic assemblages. Clone libraries were dominated by sequences related to hydrogenotrophic methanogens of the orders Methanobacteriales and Methanococcales and suggested a general decline in the relative abundance of Methanobacteriales mcrA with time since restoration. Terminal restriction fragment length polymorphism analysis indicated methanogenic assemblages remain relatively stable between wet and dry seasons. Interestingly, analysis of soils across the restoration chronosequence indicated a shift in Methanobacteriales populations with restoration age, suggesting genotypic shifts due to site-specific factors.

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“…Hydroperiod and substrate modifications, including nutrient enrichment of the farmed soils, facilitated the invasion of Brazilian peppertree in this area Dunevitz 1981a, Li andNordland 2001). Dalrymple et al (2003) performed a pilot test beginning in 1989 to examine whether it was necessary to remove all soil down to consolidated bedrock to inhibit recolonization by Brazilian peppertree and permit wetland restoration in the HID. Two different soil treatments were established: 1) partial soil removal (PSR) consisted of all existing vegetation cover removed while a thin layer of rock-plowed substrate was left intact (6 ha), and 2) complete soil removal (CSR) with all the vegetative cover and underlying rock-plowed substrate removed down to bedrock (18 ha).…”

Section: * See Appendix I For More Information On Biological Control mentioning

confidence: 99%

Calophya latiforceps, a New Species of Jumping Plant Lice (Hemiptera: Calophyidae) Associated withSchinus terebinthifolius(Anacardiaceae) in Brazil

Burckhardt

Manrique

Díaz

et al. 2011

Florida Entomologist

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Plant colonization after complete and partial removal of disturbed soils for wetland restoration of former agricultural fields in Everglades National Park

Cited by 38 publications

References 8 publications

Genetic and Functional Variation in Denitrifier Populations along a Short-Term Restoration Chronosequence

Genetic and Functional Variation in Denitrifier Populations along a Short-Term Restoration Chronosequence

Structure and Function of Methanogens along a Short-Term Restoration Chronosequence in the Florida Everglades

Calophya latiforceps, a New Species of Jumping Plant Lice (Hemiptera: Calophyidae) Associated withSchinus terebinthifolius(Anacardiaceae) in Brazil

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