Determining in situ pH values of pressurised fluids using stable carbon isotope techniques

International audienceProtecting or restoring aquatic ecosystems in the face of growing anthropogenic pressures requires an understanding of hydrological and biogeochemical functioning across multiple spatial and temporal scales. Recent technological and methodological advances have vastly increased the number and diversity of hydrological, bio-geochemical, and ecological tracers available, providing potentially powerful tools to improve understanding of fundamental problems in ecohydrology, notably: 1. Identifying spatially explicit flowpaths, 2. Quantifying water residence time, and 3. Quantifying and localizing biogeochemical transformation. In this review, we synthesize the history of hydrological and biogeochemical theory, summarize modern tracer methods, and discuss how improved understanding of flowpath, residence time, and biogeochemical transformation can help ecohydrology move beyond description of site-specific heterogeneity. We focus on using multiple tracers with contrasting characteristics (crossing proxies) to infer ecosystem functioning across multiple scales. Specifically, we present how crossed proxies could test recent ecohydrological theory, combining the concepts of hotspots and hot moments with the Damköhler number in what we call the HotDam framework

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Using multi-tracer inference to move beyond single-catchment ecohydrology

Abbott

Baranov

Mendoza‐Lera

et al. 2016

Earth-Science Reviews

152

162

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Assessing the usefulness of the isotopic composition of CO2 for leakage monitoring at CO2 storage sites: A review

Mayer

Humez

Becker

et al. 2015

International Journal of Greenhouse Gas Control

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Stable carbon and oxygen equilibrium isotope fractionation of supercritical and subcritical CO2 with DIC and H2O in saline reservoir fluids

Becker

Myrttinen

Nightingale

et al. 2015

International Journal of Greenhouse Gas Control

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Determining in situ pH values of pressurised fluids using stable carbon isotope techniques

Cited by 7 publications

References 23 publications

Using multi-tracer inference to move beyond single-catchment ecohydrology

Using multi-tracer inference to move beyond single-catchment ecohydrology

Assessing the usefulness of the isotopic composition of CO2 for leakage monitoring at CO2 storage sites: A review

Stable carbon and oxygen equilibrium isotope fractionation of supercritical and subcritical CO2 with DIC and H2O in saline reservoir fluids

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