Soil and phosphorus accretion rates in sub-tropical wetlands: Everglades Stormwater Treatment Areas as a case example

Bhomia, R.K.; Inglett, Patrick W.; Reddy, K. R.

doi:10.1016/j.scitotenv.2015.06.115

Cited by 31 publications

(18 citation statements)

References 76 publications

(72 reference statements)

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“…A newer technique utilizes change points in soil chemistry along a vertical gradient downward from the soil surface [64]. Applied to the Florida stormwater treatment wetlands, both the vertical soil accretion and the P accretion were determined for the cells in eight of the STA wetlands ( Table 4).…”

Section: Accretionmentioning

confidence: 99%

“…Phosphorus accumulation in soils and removed from water in STAs. Accretion and P accumulation were measured at a small number of locations in each wetland for soil cores taken in 2009 [64]. The P removed is calculated from annual performance data for the water entering and leaving the wetlands, which typically spanned the majority of the operating history.…”

Section: Accretionmentioning

confidence: 99%

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Large Constructed Wetlands for Phosphorus Control: A Review

Kadlec¹

2016

Water

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This paper reviews aspects of the performance of large (>40 ha) constructed treatment wetlands intended for phosphorus control. Thirty-seven such wetlands have been built and have good data records, with a median size of 754 ha. All are successfully removing phosphorus from a variety of waters. Period of record median concentration reductions were 71%, load reductions 0.77 gP¨m´2¨year´1, and rate coefficients 12.5 m¨year´1. Large wetlands have a narrower performance spectrum than the larger group of all sizes. Some systems display startup trends, ranging to several years, likely resulting from antecedent soil and vegetation conditions. There are internal longitudinal gradients in concentration, which vary with lateral position and flow conditions. Accretion in inlet zones may require attention. Concentrations are reduced to plateau values, in the range of about 10-50 mgP¨m´3. Vegetation type has an effect upon performance measures, and its presence facilitates performance. Trends in the performance measures over the history of individual systems display only small changes, with both increases and decreases occurring. Such trends remove little of the variance in behavior. Seasonality is typically weak for steady flow systems, and most variability appears to be stochastic. Stormwater systems display differences between wet and dry season behavior, which appear to be flow-driven. Several models of system performance have been developed, both steady and dynamic.

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Section: Accretionmentioning

confidence: 99%

Section: Accretionmentioning

confidence: 99%

Large Constructed Wetlands for Phosphorus Control: A Review

Kadlec¹

2016

Water

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“…Sedimentation increases the availability of nutrients for plant growth, as the recently accreted sediments act as sinks, sources, and transformers of the influent materials, which include nutrients and contaminants9. Nutrient availability is a key influence on biomass production, resource allocation, and reproductive strategy in clonal macrophytes101112.…”

mentioning

confidence: 99%

The combined effects of sediment accretion (burial) and nutrient enrichment on the growth and propagation of Phalaris arundinacea

Chen

Liao

Xie

et al. 2017

Sci Rep

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Sediment accretion (burial) and nutrient enrichment occur concurrently in lacustrine wetlands, but the role of these two aspects of sedimentation on macrophyte performance has rarely been examined. Here, we investigated the concurrent effects of sediment accretion and nutrient enrichment on the growth and propagation of Phalaris arundinacea L. using a factorial sediment burial by nutrient addition experimental design. Regardless of burial depth, nutrient addition increased biomass accumulation, shoot mass ratio, the number of rhizomes, and the length of ramets and rhizomes. While burial had little effect on plant growth and propagation, it had an interactive effect with nutrient addition on belowground growth and ramet production. These results indicate that P. arundinacea is tolerant to burial, which allows it to grow in habitats with high sedimentation rates. However, the enhanced growth and propagation of P. arundinacea following sedimentation were primarily related to nutrient enrichment. This suggests that nutrient enrichment of sediments, which occurs in many lacustrine wetlands, increases the risk of invasion by P. arundinacea.

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“…The magnitude and direction of these interannual fluctuations in sea level coincided with similarly scaled growth and erosion that manifested along reef profiles. When compared to other intertidal or shallow subtidal habitats such as salt marsh and mangrove (Baustian et al., ; Bhomia et al., ; Cahoon et al., ; Perry et al., ; Sasmito et al., ), surface accretion across all reef generations exceeded the rates of accretion in other coastal biogenic habitats. Additionally, the predicted OGZ and growth ceiling, based on sea level during each scan period, paralleled general growth trends across reefs of all ages, further supporting its use as a management tool in oyster‐reef conservation and restoration.…”

Section: Discussionmentioning

confidence: 95%

“…When compared to other coastal habitats and their capacities for RSLR response, oyster reefs are unparalleled in their ability to maintain surface elevation with changing sea level. Greatest recorded rates of surface elevation change in intertidal and shallow subtidal systems such as marshes, mangroves, and corals are below 1–2 cm/year excluding storm‐related allochthonous sedimentation (Baustian et al., ; Bhomia et al., ; Perry et al., ; Sasmito et al., ). Overall, this research further solidifies that oyster reefs are resilient habitats that will become increasingly important in estuarine systems with changing sea level.…”

Section: Discussionmentioning

confidence: 99%

Evidence of exceptional oyster‐reef resilience to fluctuations in sea level

Ridge

Rodriguez

Fodrie

2017

Ecology and Evolution

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Ecosystems at the land–sea interface are vulnerable to rising sea level. Intertidal habitats must maintain their surface elevations with respect to sea level to persist via vertical growth or landward retreat, but projected rates of sea‐level rise may exceed the accretion rates of many biogenic habitats. While considerable attention is focused on climate change over centennial timescales, relative sea level also fluctuates dramatically (10–30 cm) over month‐to‐year timescales due to interacting oceanic and atmospheric processes. To assess the response of oyster‐reef (Crassostrea virginica) growth to interannual variations in mean sea level (MSL) and improve long‐term forecasts of reef response to rising seas, we monitored the morphology of constructed and natural intertidal reefs over 5 years using terrestrial lidar. Timing of reef scans created distinct periods of high and low relative water level for decade‐old reefs (n = 3) constructed in 1997 and 2000, young reefs (n = 11) constructed in 2011 and one natural reef (approximately 100 years old). Changes in surface elevation were related to MSL trends. Decade‐old reefs achieved 2 cm/year growth, which occurred along higher elevations when MSL increased. Young reefs experienced peak growth (6.7 cm/year) at a lower elevation that coincided with a drop in MSL. The natural reef exhibited considerable loss during the low MSL of the first time step but grew substantially during higher MSL through the second time step, with growth peaking (4.3 cm/year) at MSL, reoccupying the elevations previously lost. Oyster reefs appear to be in dynamic equilibrium with short‐term (month‐to‐year) fluctuations in sea level, evidencing notable resilience to future changes to sea level that surpasses other coastal biogenic habitat types. These growth patterns support the presence of a previously defined optimal growth zone that shifts correspondingly with changes in MSL, which can help guide oyster‐reef conservation and restoration.

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Soil and phosphorus accretion rates in sub-tropical wetlands: Everglades Stormwater Treatment Areas as a case example

Cited by 31 publications

References 76 publications

Large Constructed Wetlands for Phosphorus Control: A Review

Large Constructed Wetlands for Phosphorus Control: A Review

The combined effects of sediment accretion (burial) and nutrient enrichment on the growth and propagation of Phalaris arundinacea

Evidence of exceptional oyster‐reef resilience to fluctuations in sea level

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