Sr isotope tracing of multiple water sources in a complex river system, Noteć River, central Poland

Zieliński, Mateusz; Dopieralska, Jolanta; Bełka, Zdzisław; Walczak, Aleksandra; Siepak, Marcin; Jakubowicz, Michał

doi:10.1016/j.scitotenv.2016.01.036

Cited by 49 publications

(35 citation statements)

References 48 publications

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“…Degradation of surface water quality is a crucial global environmental issue (Zielinski et al, 2016;Roebeling et al, 2015). It's particularly apparent in China due to the rapid processes of urbanization and economic development (Chen et al, 2016a(Chen et al, , 2016bMei et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Impacts of land use and population density on seasonal surface water quality using a modified geographically weighted regression

Chen

Mei

Dahlgren

et al. 2016

Science of The Total Environment

169

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• The modified GWR models had higher R 2 and reflected the actual spatial features.• A manual variable excluding-selecting method is explored to avoid multicollinearity.• Influences of the dominant indicator on water quality varied with space and seasons.• Protection policies need consider sitespecific conditions and seasonal variations. G R A P H I C A L A B S T R A C Ta b s t r a c t a r t i c l e i n f o As an important regulator of pollutants in overland flow and interflow, land use has become an essential research component for determining the relationships between surface water quality and pollution sources. This study investigated the use of ordinary least squares (OLS) and geographically weighted regression (GWR) models to identify the impact of land use and population density on surface water quality in the Wen-Rui Tang River watershed of eastern China. A manual variable excluding-selecting method was explored to resolve multicollinearity issues. Standard regression coefficient analysis coupled with cluster analysis was introduced to determine which variable had the greatest influence on water quality. Results showed that: (1) Impact of land use on water quality varied with spatial and seasonal scales. Both positive and negative effects for certain land-use indicators were found in different subcatchments. (2) Urban land was the dominant factor influencing N, P and chemical oxygen demand (COD) in highly urbanized regions, but the relationship was weak as the pollutants were mainly from point sources. Agricultural land was the primary factor influencing N and P in suburban and rural areas; the relationship was strong as the pollutants were mainly from agricultural surface runoff. Subcatchments located in suburban areas were identified with urban land as the primary influencing factor during the wet season while agricultural land was identified as a more prevalent influencing factor during the dry season. (3) Adjusted R 2 values in OLS models using the manual variable excluding-selecting method averaged 14.3% higher than using stepwise multiple linear regressions. However, the corresponding GWR models had adjusted R 2~5 9.2% higher than the optimal OLS models, confirming that GWR models demonstrated better prediction accuracy. Based on our findings, water resource protection policies should consider site-specific land-use Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v conditions within each watershed to optimize mitigation strategies for contrasting land-use characteristics and seasonal variations.

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Section: Introductionmentioning

confidence: 99%

Impacts of land use and population density on seasonal surface water quality using a modified geographically weighted regression

Chen

Mei

Dahlgren

et al. 2016

Science of The Total Environment

169

View full text Add to dashboard Cite

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“…Only a few tributaries (Mała Panew, Myśla, and Ruda) and artificial canals (Gliwice Canal, Oder–Spree Canal, and Oder–Havel Canal) exhibit opposite Sr characteristics. As a result, the variations in Sr concentration and 87 Sr/ 86 Sr values in the entire catchment are quite wide, from 0.7080 to 0.7127 and from 0.07 to 1.38 mg/L, respectively (see Zieliński et al, ; Zieliński et al, , and data of this study). The range in the Sr content is especially wide considering that most of the rivers in the Baltic Basin exhibit Sr concentrations below 0.1 mg/L (Löfvendahl et al, ).…”

Section: Resultsmentioning

confidence: 50%

“…During the low water in the summer, the fluctuations are much more pronounced and Sr concentration is systematically higher than during the spring. According to Zieliński et al (), the lowering of the Sr content in the rivers of the Polish Lowland during the spring is due to elevated surface run‐off from meltwater, providing waters with extremely low Sr concentration (a few micrograms per litre only). The highest strontium level is observed in Upper Silesia, in the upstream portion of the river, where mine waters are supplied via small tributaries, Ruda, Bierawka, and Kłodnica/Gliwice Canal.…”

Section: Resultsmentioning

confidence: 99%

“…Of course, atmospheric waters are also present in each surface hydrological system. However, because of the extremely low Sr content (a few micrograms per litre only), their direct impact on the riverine Sr budget is negligible as a rule (e.g., Zieliński et al, ).…”

Section: Strontium Sources and Water Mixingmentioning

confidence: 99%

“…Results of the simulation are consistent with earlier suggestions that fertilizers used in the agriculture seem to have an overregional influence on the Sr budget of surface waters in Poland. Recently, Zieliński et al () provided evidence for a lowering of the present‐day Sr isotope signatures in the Noteć River, a tributary of the Warta, due to the impact of fertilizers. The lowering effect is because mineral fertilizers used in Poland have a strongly unradiogenic composition with an average 87 Sr/ 86 Sr ratio of 0.7083 and very high Sr contents.…”

Section: Importance Of Anthropogenic Inputsmentioning

confidence: 99%

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Strontium isotope identification of water mixing and recharge sources in a river system (Oder River, central Europe): A quantitative approach

Zieliński

Dopieralska

Bełka

et al. 2018

Hydrological Processes

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This study uses Sr isotope composition (87Sr/86Sr) and Sr content of waters of the Oder, one of the largest rivers in central Europe, to fingerprint natural and anthropogenic contributions to its Sr budget and to evaluate water mixing processes in its hydrological system. It also demonstrates a simple method of quantifying natural and anthropogenic Sr inputs in the watershed. The method has potential for environmental and archaeological research because past Sr geochemistry of river water can easily be reconstructed. For the first time, a catchment‐scale impact of anthropogenic sources on the Sr budget of a middle‐size river is shown in a quantitative way. The water of the Oder is characterized by a relatively uniform Sr isotope composition, from 0.7100 to 0.7108, contrasting with strong variations in Sr concentration, from 0.25 to 1.27 mg/L. There is a general seasonal trend in variability, with waters becoming more radiogenic and dilute with respect to the Sr in the spring time. This Sr systematics differs significantly from the Sr budgets of the majority of the Oder tributaries that exhibit more radiogenic composition and systematically lower Sr concentrations. A mixing scenario in the Oder involves Sr contribution from four principal water sources: (a) shallow ground waters with Sr derived from near‐surface weathering of silicates, (b) moderately radiogenic mine waters from the Upper Silesian Coal Basin, (c) unradiogenic mine waters from the Permian sequence of the copper district, and (d) unradiogenic ground waters from shallow‐seated Palaeogene, Neogene, and Mesozoic aquifers. The Sr budget of the Oder is primarily controlled by inputs of dissolved Sr from anthropogenic sources, which overprint the natural background, controlled by geology. Thus, about 47.5% of Sr originates from agriculture, industrial, and municipal additions, 31.5% from mine water inputs, and only 21% from natural sources, that is, rock weathering and atmospheric precipitation. Reconstruction of the past Sr chemistry of the Oder reveals that its present‐day Sr isotope composition is temporary and significantly different from that of the preindustrial times.

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Hydrogeochemical and isotopic evidences of unique groundwater recharge patterns in the Mongolian Plateau

Chen

et al. 2022

Hydrological Processes

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In arid and semi‐arid areas, local precipitation is insufficient to fulfil the water requirements of the fragile local environment; hence, water is obtained from groundwater. The Hulun Lake Basin is located in the Mongolian Plateau, which is home to numerous lakes. In this study, we used remote sensing and isotopic tracing of naturally occurring isotopes (δ18O, δ2H, and 87Sr/86Sr) to identify and quantify the various water inputs into the basin. Based on the lake water balance calculation and precipitation and river inputs, a 5.4 × 108 m3/year groundwater recharge rate was determined. Groundwater and river water with depleted δ18O and δ2H were identified close to the faults near Hulun Lake. The groundwater recharge into Hulun Lake is aided by the faults. The δ18O and δ2H compositions of the groundwater, rivers, and lakes were consistent and more depleted than those of precipitation in the local mountains and plains. Therefore, the rivers and lakes are assumed to be primarily recharged by groundwater. The low strontium isotopes (87Sr/86Sr) in the samples suggest that the water was primarily recharged by basalt groundwater, which was identified under the Cenozoic strata instead of the sandstones, granites, and tuffs, which are the primary rocks in the study area. Moreover, the faults were widely distributed in the study area, allowing for groundwater upwelling from basalts. For the areas with volcanic rocks and faults, particularly in arid and semi‐arid areas, the basalt groundwater recharge through faults is critical for environmental sustainability. This research provides necessary information for future hydro‐ecosystem resource management in arid and semi‐arid areas.

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Sr isotope tracing of multiple water sources in a complex river system, Noteć River, central Poland

Cited by 49 publications

References 48 publications

Impacts of land use and population density on seasonal surface water quality using a modified geographically weighted regression

Impacts of land use and population density on seasonal surface water quality using a modified geographically weighted regression

Strontium isotope identification of water mixing and recharge sources in a river system (Oder River, central Europe): A quantitative approach

Hydrogeochemical and isotopic evidences of unique groundwater recharge patterns in the Mongolian Plateau

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