Nitrate and chloride loadings as anthropogenic indicators

Zahn, Michael T.; Grimm, Wolf-Dieter

doi:10.1007/bf00478470

Cited by 19 publications

(2 citation statements)

References 4 publications

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“…Lower nitrate‐N concentrations at Radium Spring may reflect the dominance of forest land cover within the recharge area, as well as, less extensive agricultural land use (Figure 3 and Table 2). Lower nitrate‐N concentrations observed in forested areas are due to low fertilizer application rates and plant uptake that reduces nitrate passing through the root zone (Zahn and Grimm, 1993; Kolpin, 1997; Lefebvre et al. , 2007).…”

Section: Discussionmentioning

confidence: 99%

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹

Allums¹,

Opsahl²,

Golladay³

et al. 2012

J American Water Resour Assoc

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Analysis of long-term data from (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009) in four springs that discharge from the Upper Floridan aquifer into the Flint River (southwestern Georgia, United States) indicate aquifer and surface-water susceptibility to nutrient loading. Nitrate-N concentrations ranged from 1.74 to 3.30 mg ⁄ l, and exceeded historical levels reported for the Upper Floridan aquifer (0.26-1.52 mg ⁄ l). Statistical analyses suggest increasing nitrate-N concentration in groundwater discharging at the springs (n = 146 over eight years) and that nitrate-N concentration is influenced by a dynamic interaction between depth to groundwater (an indicator of regional hydrologic conditions) and land use. A one-time synoptic survey of 10 springs (6 springs in addition to the 4 previously mentioned) using stable isotopes generated d 15 N-NO 3 ) values (4.8-8.4& for rural springs and 7.7-13.4& for developed ⁄ urban springs) suggesting mixed sources (i.e., fertilizer, animal waste, and soil organic nitrogen) of nitrate-N to rural springs and predominantly animal ⁄ human waste to urban springs. These analyses indicate a direct relation between nitrate-N loading since the 1940s and intensification of agricultural and urban land use. This study demonstrates the importance of evaluating long-term impacts of land use on water quality in groundwater springs and in determining how rapidly these changes occur.

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Section: Discussionmentioning

confidence: 99%

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹

Allums¹,

Opsahl²,

Golladay³

et al. 2012

J American Water Resour Assoc

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“…Chlorid kann hier als ein Indikator für Schadstoffeinträge dienen, wobei dessen hauptsächliche Quelle in vielen Inlandgewässern kommunales Abwasser ist[23]. Der Faktor 1 zeigte eine starke Korrelation (> 0,7) mit dem DOC und der Huminstoffkonzentration.…”

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Qualität russischer Flüsse: Die große Unbekannte

Gremm

Heidt

Frimmel

2002

Chemie in unserer Zeit

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Die Wasserqualitätsüberwachung in Russland ist aufgrund einer fehlenden finanziellen Basis in einem so kritischen Zustand, dass die wenigen noch ermittelten Messdaten in vielen Fällen hinsichtlich ihrer Qualität und Aussagekraft fraglich erscheinen. 1996 begann ein deutsch‐russisches Forschungsprojekt zur Untersuchung der Wasserqualität in den Flüssen Moskva Oka und Wolga. Die wesentlichen Schadstoffe in der Moskva und Oka sind Nährstoffe, AOX und polycyclische aromatische Kohlenwasserstoffe (PAK). Die Moskva ist als Vorfluter der Region Moskau sehr stark verschmutzt. Die Hauptquelle der Belastung ist unzureichend geklärtes kommunales Abwasser. Erste Ergebnisse aus der Wolgaforschung ergaben einen überraschend guten Zustand des Gewässers im Untersuchungsgebiet von Nishny Novgorod.

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Water-Quality Monitoring in Russian Rivers: Results of a Case Study on the Pollution Situation of the Rivers Moskva and Oka

Gremm

Heidt

Frimmel

et al. 2002

Water Resources Quality

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Nitrate and chloride loadings as anthropogenic indicators

Cited by 19 publications

References 4 publications

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹

Qualität russischer Flüsse: Die große Unbekannte

Water-Quality Monitoring in Russian Rivers: Results of a Case Study on the Pollution Situation of the Rivers Moskva and Oka

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Nitrate and chloride loadings as anthropogenic indicators

Cited by 19 publications

References 4 publications

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.1

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.1

Qualität russischer Flüsse: Die große Unbekannte

Water-Quality Monitoring in Russian Rivers: Results of a Case Study on the Pollution Situation of the Rivers Moskva and Oka

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Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹

Nitrate Concentrations in Springs Flowing into the Lower Flint River Basin, Georgia U.S.A.¹