A sediment porewater sampler used in root zone studies of the submerged macrophyte, <i>Myriophyllum spicatum</i>1

Bottomley, Eleanor; Bayly, I. L.

doi:10.4319/lo.1984.29.3.0671

Cited by 33 publications

(16 citation statements)

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“…ProWles of pore water nutrients (ammonium, nitrate, and phosphate) were sampled in situ in each plot with PVC equilibrators (Hesslein 1976;Bottomley and Bayley 1984;Wigand et al 1997). Equilibrators (one per plot) were prepared in the laboratory using deoxygenated, deionized water in each sampling cavity and set in the Weld for 5 days (June 5-10, 2002) to allow for equilibration before retrieving.…”

Section: Study Sitementioning

confidence: 99%

Effect of nutrient loading on biogeochemical and microbial processes in a New England salt marsh

et al. 2007

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Coastal marshes represent an important transitional zone between uplands and estuaries. One important function of marshes is to assimilate nutrient inputs from uplands, thus providing a buVer for anthropogenic nutrient loads. We examined the eVects of nitrogen (N) and phosphorus (P) fertilization on biogeochemical and microbial processes during the summer growing season in a Spartina patens (Aiton (Muhl.)) marsh in the Narragansett Bay National Estuarine Research Reserve on Prudence Island (RI). Quadruplicate 1 m 2 plots were fertilized with N and P additions, N-only, P-only, or no additions. N-only addition signiWcantly stimulated bacterial production and increased pore water NH 4 + and NO 3 ¡ concentrations. DenitriWcation rates ranged from 0 to 8 mmol m ¡2 day ¡1 . Fertilization had no apparent eVect on soil oxygen consumption or denitriWcation measured in the summer in intact cores due to high core-to-core variation. P fertilization led to increased pore water dissolved inorganic phosphorus (DIP) concentrations and increased DIP release from soils. In contrast the control and N-only treatments had signiWcant DIP uptake across the soil-water interface. The results suggest that in the summer fertilization has no apparent eVect on denitriWcation rates, stimulates bacterial productivity, enhances pore water nutrient concentrations and alters some nutrient Xuxes across the marsh surface.

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Section: Study Sitementioning

confidence: 99%

Effect of nutrient loading on biogeochemical and microbial processes in a New England salt marsh

et al. 2007

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“…Profiles of porewater nutrients (ammonium, nitrate, and phosphate) were sampled in situ with PVC equilibrators using standard methods (Hesslein 1976, Bottomley andBayley 1984). Three sites were selected (Figure 1) such that a stand of each plant was located near each site.…”

Section: Phragmites Australis Lythrum Salicaria Andmentioning

confidence: 99%

Sediment chemistry associated with native and non-native emergent macrophytes of a Hudson River marsh ecosystem

1998

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In tidal freshwater marshes of the Hudson River, coverage by Phragmites australis and Lythrum salicaria has increased greatly over the past twenty years, although Typha angustifolia is still the predominant vegetation. Prior to any attempts at marsh restoration via removal of exotic/invasive plant species, we wanted to describe the current relationship between these plants and sediment nutrient pools. Extant stands (n=3 of each) of T. angustifolia, L. salicaria, and P. australis were sampled with porewater equilibrators in the spring and summer of 1995 and summer 1996 to measure porewater ammonium, nitrate, and phosphate. Porewater pools of phosphate were significantly lower (p<0.05) in stands of L. salicaria in summer, with concentrations only half those measured in stands of P. austral& and T. angustifolia. Porewater ammonium did not differ among plant communities, and nitrate was undetectable in sediments associated with all three communities. Sequestration of nutrients in above-ground biomass differed significantly among plant species, indicating differential demand on sediment nutrient pools. There were significant decreases in porewater ammonium from spring to summer. Growing season estimates of nitrogen incorporation into above-ground plant tissue are more than adequate to explain the removal of ammonium from porewater for all plant communities. Similarly, plant uptake of porewater phosphate was several times greater than springtime standing stocks of dissolved inorganic P. Concentrations of porewater phosphate remained high in the summer, indicating rapid replenishment from other sediment phosphorus pools. Depletion of porewater ammonium in the summer and low N : P in plant tissues suggest N limitation of these marsh plants. Our data suggest that marsh management practices intended to shift the relative vegetation coverage towards native and non-invasive species should consider the subtle but ecologically significant effects on nutrient cycling.

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“…SAV consumes P from both sediment bed and water column. A significant amount of P is directly consumed via root uptake from the sediment bed (Howard-Williams and Allanson, 1981; Barko and Smart, 1981;Bottomley and Bayly, 1984;Carignan and Kalff, 1980;Rattray et al, 1991). Therefore, it is necessary to simulate SRP directly and to have a sediment diagenesis model.…”

Section: Phosphorus Processesmentioning

confidence: 98%

An integrated environmental model for a surface flow constructed wetland: Water quality processes

Jin

2016

Ecological Engineering

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A sediment porewater sampler used in root zone studies of the submerged macrophyte, Myriophyllum spicatum1

Abstract: A sediment porewater sampler used in root zone studies of the submerged macrophyte, MyriophyZZzm spicatum'

Cited by 33 publications

References 0 publications

Effect of nutrient loading on biogeochemical and microbial processes in a New England salt marsh

Effect of nutrient loading on biogeochemical and microbial processes in a New England salt marsh

Sediment chemistry associated with native and non-native emergent macrophytes of a Hudson River marsh ecosystem

An integrated environmental model for a surface flow constructed wetland: Water quality processes

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