Losses of inorganic carbon and nitrous oxide from a temperate freshwater wetland in relation to nitrate loading

Paludan, Claus; Blicher-Mathiesen, Gitte

doi:10.1007/bf02179957

Cited by 33 publications

(13 citation statements)

References 40 publications

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“…However, due to the low number of measurements for the Ski VSSF CW, these fluxes are a bit uncertain. The range of fluxes reported for a minerotrophic fen and riparian buffer zones (Paludan and Blicher‐Mathiesen, 1996; Augustin et al, 1998; Teiter and Mander, 2005) (Table 8) are in the lower range of what has been reported for the CWs in this study. In the Netherlands, however, high fluxes were measured in a forested riparian buffer zone (local spots exceeding rates of 100 mg N 2 O–N m −2 d −1 ) (Hefting et al, 2003).…”

Section: Discussioncontrasting

confidence: 65%

Emission of the Greenhouse Gases Nitrous Oxide and Methane from Constructed Wetlands in Europe

et al. 2006

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The potential atmospheric impact of constructed wetlands (CWs) should be examined as there is a worldwide increase in the development of these systems. Fluxes of N(2)O, CH(4), and CO(2) have been measured from CWs in Estonia, Finland, Norway, and Poland during winter and summer in horizontal and vertical subsurface flow (HSSF and VSSF), free surface water (FSW), and overland and groundwater flow (OGF) wetlands. The fluxes of N(2)O-N, CH(4)-C, and CO(2)-C ranged from -2.1 to 1000, -32 to 38 000, and -840 to 93 000 mg m(-2) d(-1), respectively. Emissions of N(2)O and CH(4) were significantly higher during summer than during winter. The VSSF wetlands had the highest fluxes of N(2)O during both summer and winter. Methane emissions were highest from the FSW wetlands during wintertime. In the HSSF wetlands, the emissions of N(2)O and CH(4) were in general highest in the inlet section. The vegetated ponds in the FSW wetlands released more N(2)O than the nonvegetated ponds. The global warming potential (GWP), summarizing the mean N(2)O and CH(4) emissions, ranged from 5700 to 26000 and 830 to 5100 mg CO(2) equivalents m(-2) d(-1) for the four CW types in summer and winter, respectively. The wintertime GWP was 8.5 to 89.5% of the corresponding summertime GWP, which highlights the importance of the cold season in the annual greenhouse gas release from north temperate and boreal CWs. However, due to their generally small area North European CWs were suggested to represent only a minor source for atmospheric N(2)O and CH(4).

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Section: Discussioncontrasting

confidence: 65%

Emission of the Greenhouse Gases Nitrous Oxide and Methane from Constructed Wetlands in Europe

et al. 2006

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“…Spatial differences in N 2 O emission appeared to be consistent with a higher groundwater NO 3 À load in the up-slope groundwater-NO 3 À removing zones compared to the down-slope zones where practically no groundwater-NO 3 À had to be removed [9]. Comparable results were obtained by Hefting [21] and Paludan and Blicher-Mathiesen [22]. The latter observed that the N 2 O emission in a temperate freshwater wetland situated in an agricultural area was significantly higher in the NO 3 À reducing zone of the wetland (0.4-11.5kg N 2 O-N ha À 1 year À 1 ) than in the zone without NO 3 À reduction (0.3-0.5 kg N 2 O-N ha À 1 year À 1 ).…”

Section: N 2 O Emissions From Riparian Buffer Zonessupporting

confidence: 80%

“…With regard to emission from arable land, NO emission was measured from a sandy soil in Poppel (51825VN, 584VN, Belgium) during autumn 1997 (15)(16)(17)(18)(19)(20)(21)(22), spring 1998 (May 26-June 2) and summer 1998 (7)(8)(9)(10)(11)(12)(13)(14). In 1997, the arable land was cropped with sugar beet and fertilized with 144 kg N ha À 1 .…”

Section: Methodsmentioning

confidence: 99%

“Forgotten” terrestrial sources of N-gases

Boeckx

Cleemput

2006

International Congress Series

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“…In headwater wetlands and streams, NO 3 − concentrations are highest in winter and DOC concentrations are highest in autumn Tank 2008, Eimers et al 2008), but this pattern can be strongly affected by seasonal variation in hydrologic flow paths (McClain et al 2003, Bradley et al 2007). Some authors have reported no seasonal patterns in N 2 O concentrations (Paludan andBlicher-Mathiesen 1996, Höll et al 2005), whereas others have observed that N 2 O effluxes from headwater streams are highest in early spring (Beaulieu et al 2008) and those from riparian wetlands are highest in summer (Dhondt et al 2004, Hernandez andMitsch 2006). In urbanizing watersheds, fractionation of total dissolved N (TDN) varies seasonally .…”

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confidence: 96%

Effects of headwater wetlands on dissolved nitrogen and dissolved organic carbon concentrations in a suburban New Hampshire watershed

Flint

McDowell

2015

Freshwater Science

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Coupled processing of N and C in headwater wetlands can strongly affect downstream water quality. To understand how wetlands affect dissolved N and C concentrations in surface waters and the factors that influence changes in concentration, we measured landscape and physicochemical variables and dissolved N and C concentrations at the in-and outflows of 10 headwater wetlands in a suburban watershed (New Hampshire, USA) over 18 mo. We analyzed changes (Δ) in dissolved N and C concentrations (outflow -inflow) with linear mixed-effects models. A pulse in N 2 O concentrations that exceeded mean values by 2 to 3 orders of magnitude was observed during a summer characterized by rapidly fluctuating water-table elevations. NO 3 − concentrations were significantly lower, and DOC and DON concentrations were significantly higher at outflows than inflows. ΔNO 3 − was predicted by inflow concentrations of NO 3 − , NH 4 + , and DON, ΔDON, and season. ΔDON was predicted by inflow DON and DOC concentrations, ΔDOC, and dissolved O 2 (as the mean of in-and outflow concentrations). ΔTDN (total dissolved nitrogen) was predicted by inflow TDN and DOC concentrations, dissolved O 2 , and season. ΔDOC was predicted by DON inflow concentration and ΔDON, season, and the ratio of study-wetland to subwatershed area. No significant predictors of ΔN 2 O or ΔNH 4 + concentrations were found. In this suburban watershed, the passage of surface water through headwater wetlands is associated with decreased NO 3 − concentrations, increased DON and DOC concentrations, and seasonal shifts in TDN fractionation. Linear mixed-effects modeling was an effective approach to understanding coupled N and C dynamics in the study wetlands.

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Losses of inorganic carbon and nitrous oxide from a temperate freshwater wetland in relation to nitrate loading

Cited by 33 publications

References 40 publications

Emission of the Greenhouse Gases Nitrous Oxide and Methane from Constructed Wetlands in Europe

Emission of the Greenhouse Gases Nitrous Oxide and Methane from Constructed Wetlands in Europe

“Forgotten” terrestrial sources of N-gases

Effects of headwater wetlands on dissolved nitrogen and dissolved organic carbon concentrations in a suburban New Hampshire watershed

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