Greenhouse gas production in a pond sediment: Effects of temperature, nitrate, acetate and season

Stadmark, Johanna; Leonardson, Lars

doi:10.1016/j.scitotenv.2007.07.039

Cited by 26 publications

(23 citation statements)

References 31 publications

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“…N 2 O emissions are linked to many environmental factors, such as dissolved N 2 O concentration, water temperature, and dissolved nitrogen concentration (Stadmark and Leonardson, 2007;Marty et al, 2001). In this experiment presented, regression analysis showed a consistent pattern where N 2 O fluxes significantly correlated with dissolved N 2 O concentrations but were only weakly correlated with wind speeds (Table 4).…”

Section: N 2 O Fluxes and Environmental Factorsmentioning

confidence: 51%

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Yang

Yan

et al. 2011

J. Geogr. Sci.

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This study was performed at three eutrophic rivers in Southeast China aiming to determine the magnitude and patterns of dissolved N 2 O concentrations and fluxes over a seasonal (in 2009) and diurnal (24 h) temporal scale. The results showed that N 2 O concentrations varied from 0.28 to 0.38 (mean 0.32±0.04), 0.29 to 0.46 (mean 0.37±0.07), and 2.07 to 3.47 (mean 2.84±0.63) μg N-N 2 O L −1 in the Fengle, Hangbu and Nanfei rivers, respectively, in the diurnal study performed during the summer of 2008. The study found that mean N 2 O concentration and estimated N 2 O flux (67.89 ± 6.71 µg N-N 2 O m −2 h −1 ) measured from the Nanfei River with serious urban wastewater pollution was significantly higher than those from the Fengle and the Hangbu Rivers with agricultural runoff. In addition, the seasonal study during June and December of 2009 also showed that the mean N 2 O concentration (10.59±14.67 μg N-N 2 O L −1 ) and flux (236.87±449.74 µg N-N 2 O m −2 h −1 ) observed from the Nanfei River were significantly higher than those from the other two rivers. Our study demonstrated both N 2 O concentrations and fluxes exhibited seasonal and diurnal fluctuations. Over three consecutive days during the summer of 2008, N 2 O accumulation rates varied within the range of 3.91-7.21, 2.76-15.71, and 3.23-30.03 µg N-N 2 O m −2 h −1 for the Fengle, Hangbu and Nanfei Rivers, respectively, and exponentially decreased with time.

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Section: N 2 O Fluxes and Environmental Factorsmentioning

confidence: 51%

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Yang

Yan

et al. 2011

J. Geogr. Sci.

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“…Our study found that there are no significant differences in diurnal patterns of saturation for both N 2 O and DO gases over a consecutive 60‐h period in each observation ( LSD test , p > 0.05). However, Independent‐Samples T Test showed that mean dissolved N 2 O in October (0.47 ± 0.02 μ g N 2 O–N L −1 , SEM) was significantly higher than that in August (0.29 ± 0.03 μ g N–N 2 O L −1 , SEM) ( p < 0.001), highlighting the seasonal inhomogeneity in N 2 O productions [ McCrackin and Elser , 2010; Chénier et al , 2006; Stadmark and Leonardson , 2007]. NO 3 − and DO concentrations also showed no statistically significant differences over the consecutive 60‐h periods in each observation (LSD test, p > 0.05).…”

Section: Resultsmentioning

confidence: 99%

Riverine N₂O concentrations, exports to estuary and emissions to atmosphere from the Changjiang River in response to increasing nitrogen loads

Yan

Yang

Fang

et al. 2012

Global Biogeochemical Cycles

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. Taken together, the findings reported here suggest that both the river N 2 O concentrations and emissions would increase in response to rising anthropogenic nitrogen loads. Our study showed that the mean emission factor based on the ratio of the total N 2 O flux to NO 3 À flux is four times greater than the value of 0.0025 obtained with the methodology recommended by the Intergovernmental Panel on Climate Change. Thus, our findings reflect the open river channel rapid exchange of gases with the atmosphere.

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“…Changes in nutrient loading, hydraulic loading and climate warming can all lead to shifts in ecosystem state (MOOIJ et al, 2009). Most studies have reported the effects of climate change on the zooplankton community (GERTEN and ADRIAN, 2002;GYLLSTRÖM et al, 2005), the phytoplankton community (MOSS et al, 2003;STAEHR and SAND-JENSEN, 2006;HUBER et al, 2008), the bacterioplankton community (PEARCE, 2005), fish ( VAN WINKLE et al, 1997), and on sediments (LIIKANEN et al, 2002;STADMARK and LEONARDSON, 2007), while the effect on macrophytes (MOOIJ et al, 2009) has been less intensively investigated. MOOIJ et al (2009) green algae.…”

Section: Introductionmentioning

confidence: 99%

Increased Temperature Due to Global Warming Alters the Respiratory Potential in Aquatic Organisms from an Oligotrophic Lake

Simčić

Germ

2010

International Review of Hydrobiology

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The influence of elevated temperature was studied on the respiratory potential of a microplankton community, two macrophytes species (Myriophyllum spicatum and Chara aspera), and sediments, all from an oligotrophic lake, in order to estimate their susceptibility to temperature change. Samples collected in winter, spring, summer and autumn were incubated at three different temperatures. The respiratory potential, measured as electron transport system (ETS) activity at a standard temperature of 20 °C was, in average, greater at higher incubation temperatures for 117% in microplankton and for 30% in sediments, indicating that elevated temperature influenced the respiratory capacity of the microbial communities for mineralization of organic matter through respiration. The large increases of respiratory potential in winter microplankton community (for 184% at the highest incubation temperature compared to the temperatures of the multiyear period) and spring microplankton community (190%), and in spring sediment (64%) reveal that those communities are most susceptible to elevated temperatures during the coldest period of a year and at the beginning of lake warming. The respiratory activity of Myriophyllum spicatum was independent of incubation temperature, indicating its wide physiological tolerance. The lower respiratory potential at higher temperatures in Chara aspera optimized the use of energy in plants.

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Greenhouse gas production in a pond sediment: Effects of temperature, nitrate, acetate and season

Cited by 26 publications

References 31 publications

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Riverine N₂O concentrations, exports to estuary and emissions to atmosphere from the Changjiang River in response to increasing nitrogen loads

Increased Temperature Due to Global Warming Alters the Respiratory Potential in Aquatic Organisms from an Oligotrophic Lake

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Greenhouse gas production in a pond sediment: Effects of temperature, nitrate, acetate and season

Cited by 26 publications

References 31 publications

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Riverine N2O concentrations, exports to estuary and emissions to atmosphere from the Changjiang River in response to increasing nitrogen loads

Increased Temperature Due to Global Warming Alters the Respiratory Potential in Aquatic Organisms from an Oligotrophic Lake

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Resources

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Riverine N₂O concentrations, exports to estuary and emissions to atmosphere from the Changjiang River in response to increasing nitrogen loads