Sr isotopes as tracers of anthropogenic influences on stream water in the Austin, Texas, area

Christian, Lance N.; Banner, Jay L.; Mack, Lawrence E.

doi:10.1016/j.chemgeo.2011.01.011

Cited by 61 publications

(60 citation statements)

References 43 publications

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“…2). This study's results appear to be similar to the Christian et al (2011) study in that urbanization tends to decrease iron concentrations. By contrast Paul & Meyer (2001) observed that urbanization increases iron concentrations; this was also true for most of the 30 studies included in Das et al (2009).…”

Section: Resultssupporting

confidence: 79%

“…1, the observation points where water quality samples were collected are shown, and with some USGS stream gauging stations. A number of studies indicate that not only does urbanization cause discharge volumes to change, but will also impact on streamwater quality (Rose & Peter, 2001;Christian et al, 2011;and Hogan et al, 2014). For East Baton Rouge Parish there is very little past work in regards to water quality of streams.…”

Section: Introductionmentioning

confidence: 99%

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Influence of land use on total suspended solid and dissolved ion concentrations: Baton Rouge, Louisiana area

Carlson

2015

Proc. IAHS

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Past studies in the Baton Rouge, Louisiana area considered streamwater quality during storm events but ignored water quality during low flow periods. This study includes determination of streamwater quality during low flow time periods for none watersheds in East Baton Rouge Parish, Louisiana. These samples were collected during dry-low flow periods as indicated by water levels at USGS stream gauging sites for each stream. Chemical analysis for ions was completed using colorimeters and gravimetric analysis for total dissolved solids (TDS) and total suspended solids (TSS). Land use appears to impact concentrations of ions, TDS and TSS in a variety of ways during periods of low flow. The two most rural watersheds, which are mainly underdeveloped, have higher concentrations of Fe and Mn. By contrast the three most urban watersheds, that are mainly commercial, industrial or residential, have higher concentrations of Si, SO4 and TDS.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Influence of land use on total suspended solid and dissolved ion concentrations: Baton Rouge, Louisiana area

Carlson

2015

Proc. IAHS

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“…Biogenic carbonates, such as bivalve shells, record the 87 Sr/ 86 Sr ratio of the dissolved Sr in the aquatic environment (Nakano and Hiroshi, 1991;Veizer, 1989), which itself is derived from weathering, atmospheric inputs, and anthropogenic activities in some cases (Christian et al, 2011). If the Sr inputs deviated from their long-term average, this would have modified the 87 Sr/ 86 Sr of the water, and this change would, in turn, be recorded in the sequential layers of mineralized carbonate during the growth of the bivalve shell (Åberg, 1995).…”

Section: Anthropogenic Contamination Of the Rivers?mentioning

confidence: 99%

“…These include surface water, soil leachates, vegetation and snail shells (Evans et al, 2010;Hodell et al, 2004;Nafplioti, 2011;Price et al, 2002;Sillen et al, 1998). However, industrial/anthropogenic activities, such as the use of fertilizers, might have influenced the Sr isotope ratios of modern ecosystems (Böhlke and Horan, 2000;Christian et al, 2011;Tichomirowa et al, 2010;West et al, 2009), which would then be inappropriate for interpreting 87 Sr/ 86 Sr data of archeological specimens.…”

Section: Introductionmentioning

confidence: 99%

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Maurer

Galer

Knipper

et al. 2012

Science of The Total Environment

214

190

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Sr/ 86 Sr reference maps (isoscapes) are a key tool for investigating past human and animal migrations. However, there is little understanding of which biosphere samples are best proxies for local bioavailable Sr when dealing with movements of past populations. In this study, biological and geological samples (ground vegetation, tree leaves, rock leachates, water, soil extracts, as well as modern and archeological animal teeth and snail shells) were collected in the vicinity of two early medieval cemeteries ("Thuringians", 5-6th century AD) in central Germany, in order to characterize 87 Sr/ 86 Sr of the local biosphere. Animal tooth enamel is not appropriate in this specific context to provide a reliable 87 Sr/ 86 Sr baseline for investigating past human migration. Archeological faunal teeth data (pig, sheep/goat, and cattle) indicates a different feeding area compared to that of the human population and modern deer teeth 87 Sr/ 86 Sr such as freshwater bivalve shells and tree cores were examined in order to track potential historic anthropogenic contamination of the water and the vegetation. The data obtained from the archeological bivalve shells show that the modern rivers yield 87 Sr/ 86 Sr ratios which are similar to those of the past. However, the tree cores registered decreasing 87 Sr/ 86 Sr values over time towards present day likely mirroring anthropogenic activities such as forest liming, coal mining and/or soil acidification. The comparison of 87 Sr/ 86 Sr of the Thuringian skeletons excavated in the same area also shows that the vegetation samples are very likely anthropogenically influenced to some extent, affecting especially 87 Sr/ 86 Sr of the shallow rooted plants.

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“…Groundwater Sr isotope ( 87 Sr/ 86 Sr) values in the BSE generally are lower than those measured in surface water (Oetting et al, 1996;Garner, 2005;Christian et al, 2011), and can potentially be used to quantify mixing between surface and groundwater. Water acquires its initial Sr isotope signature ($0.7090) from interaction with silicate minerals in soils overlying the BSE (Musgrove and Banner, 2004;Wong et al, 2011).…”

Section: Sr Isotope Tracers Of Hydrologic Processesmentioning

confidence: 98%

Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions

Wong

Mahler

Musgrove

et al. 2012

Journal of Hydrology

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Sr isotopes as tracers of anthropogenic influences on stream water in the Austin, Texas, area

Cited by 61 publications

References 43 publications

Influence of land use on total suspended solid and dissolved ion concentrations: Baton Rouge, Louisiana area

Influence of land use on total suspended solid and dissolved ion concentrations: Baton Rouge, Louisiana area

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions

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