Atmospheric nitrogen in the Mississippi River Basin — emissions, deposition and transport

Lawrence, Gregory B.; Goolsby, Donald A.; Battaglin, William A.; Stensland, Gary J.

doi:10.1016/s0048-9697(99)00533-1

Cited by 33 publications

(15 citation statements)

References 13 publications

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“…Wet deposition is greater than dry deposition, especially in ocean areas (Owens et al, 1992;Hertel et al, 2002), the Mississippi River Basin (Lawrence et al, 2000), and Barnegat Bay (Gao, 2002). With this hypothesis, annual net atmospheric inputs of TP and TN into Lake Taihu should be slightly higher than estimated values.…”

Section: Discussionmentioning

confidence: 93%

Total inputs of phosphorus and nitrogen by wet deposition into Lake Taihu, China

et al. 2007

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Lake Taihu suffers from eutrophication caused by riverine nutrient inputs and air deposition. To characterize wet deposition of phosphorus (P) and nitrogen (N) to the lake, precipitation collection and measurements of total phosphorus (TP) and total nitrogen (TN) and other components at five cities around Lake Taihu were made from July 2002 to June 2003. TP and TN concentrations and deposition rates exhibited strong spatial variation in the whole catchment. An inverse correlation between station-averaged TP and TN concentrations and precipitation amount was found. Maximal TP concentration in rainfall was found in Suzhou, and maximal TN in Wuxi. However, highest wet deposition rates of TP and TN were found in Suzhou, which suggests that atmospheric nutrients are mostly from the east and northwest area of Lake Taihu. Mean TP and TN deposition rates were 0.03 and 2.0 t km -2 year -1 respectively in Lake Taihu, which are greater than reported values in other areas by comparision. Total N and P contributed to the lake by wet deposition were 75 and 4720 t per year, respectively, which represent about 7.3% and 16.5% of total annual N and P inputs via inflow rivers. Wet deposition, especially N, could have significant effects on eutrophication in the lake, which shows that air deposition should be taken into account while reducing the external nutrients in the lake.

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Section: Discussionmentioning

confidence: 93%

Total inputs of phosphorus and nitrogen by wet deposition into Lake Taihu, China

et al. 2007

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“…This leads to underestimation of total N deposition, and δ 15 N in wet and dry deposition can differ (Freyer 1991). However, wet deposition contributes more to the total N deposition than dry deposition (Chen et al 2011; Lawrence et al 2000), with a dry-to-wet ratio of 0.45:0.19. As wet deposition contributes more to total N deposition, we assume that the main effects presented in this study would not have changed dramatically if dry deposition data had been available.…”

Section: Methodsmentioning

confidence: 99%

“…Post-1950 N emissions result primarily from fossil fuel burning (predominantly NO x ) and volatisation from intensive agricultural systems (predominantly NH y ) (Asman et al 1998; Holland et al 1999). These have led to an increase in wet deposition of nitrate (NO 3 − ) and ammonium (NH 4 + ), as well as dry deposition of gaseous nitric acid (HNO 3 ), ammonia (NH 3 ), NO x , and particulate NO 3 − (Asman et al 1998; Erisman et al 1998; Lawrence et al 2000). …”

Section: Introductionmentioning

confidence: 99%

Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition

Esmeijer-Liu

Kürschner

Lotter

et al. 2012

Water Air Soil Pollut

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In this study, we test whether the δ13C and δ15N in a peat profile are, respectively, linked to the recent dilution of atmospheric δ13CO2 caused by increased fossil fuel combustion and changes in atmospheric δ15N deposition. We analysed bulk peat and Sphagnum fuscum branch C and N concentrations and bulk peat, S. fuscum branch and Andromeda polifolia leaf δ13C and δ15N from a 30-cm hummock-like peat profile from an Aapa mire in northern Finland. Statistically significant correlations were found between the dilution of atmospheric δ13CO2 and bulk peat δ13C, as well as between historically increasing wet N deposition and bulk peat δ15N. However, these correlations may be affected by early stage kinetic fractionation during decomposition and possibly other processes. We conclude that bulk peat stable carbon and nitrogen isotope ratios may reflect the dilution of atmospheric δ13CO2 and the changes in δ15N deposition, but probably also reflect the effects of early stage kinetic fractionation during diagenesis. This needs to be taken into account when interpreting palaeodata. There is a need for further studies of δ15N profiles in sufficiently old dated cores from sites with different rates of decomposition: These would facilitate more reliable separation of depositional δ15N from patterns caused by other processes.Electronic supplementary materialThe online version of this article (doi:10.1007/s11270-011-1001-8) contains supplementary material, which is available to authorized users.

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“…The further the distance from the measured data the less the influence it has on the resultant assignment of the interpolated data value. Other studies (Lawrence et al, 2000;Reinstorf et al, 2005) have used this deterministic method to calculate atmospheric deposition of nutrients. The IDW tool in ARCGIS 9.2 was used to produce phosphorus loads over the lake surface with exception of the few times two of the three stations had contaminated data and the remaining single value was used to represent deposition loads for the entire lake.…”

Section: Methodsmentioning

confidence: 99%

Seasonal and spatial distribution patterns of atmospheric phosphorus deposition to Lake Simcoe, ON

Brown

Taleban

Gharabaghi

et al. 2011

Journal of Great Lakes Research

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Atmospheric nitrogen in the Mississippi River Basin — emissions, deposition and transport

Cited by 33 publications

References 13 publications

Total inputs of phosphorus and nitrogen by wet deposition into Lake Taihu, China

Total inputs of phosphorus and nitrogen by wet deposition into Lake Taihu, China

Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition

Seasonal and spatial distribution patterns of atmospheric phosphorus deposition to Lake Simcoe, ON

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