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3 results for “Montney Formation”
Persisting effects in Daphnia magna following an acute exposure to flowback and produced waters from the Montney Formation
<p>Hydraulic fracturing extracts oil and gas through the injection of water and proppants into subterranean formations. These injected fluids mix with the host rock formation and return to the surface as a complex wastewater containing salts, metals, and organic compounds, termed flowback and produced water (FPW). Previous research indicates that FPW is toxic to <em>Daphnia magna </em>(<em>D. magna</em>), impairing reproduction, molting, and maturation time; however, recovery from FPW has not been extensively studied. Species unable to recover have drastic impacts on populations on the ecological scale; thus, this study sought to understand if recovery from an acute 48 h FPW exposure was possible in the freshwater invertebrate, <em>D. magna</em> by using a combination of physiological and molecular analyses. FPW (0.75%) reduced reproduction by 30% and survivorship to 32% compared to controls. System-level quantitative proteomic analyses demonstrate extensive perturbation of metabolism and protein transport in both 0.25 and 0.75% FPW treatments after a 48 h FPW exposure. Collectively, our data indicate that <em>D. magna</em> are unable to recover from acute 48 h exposures to ≥0.25% FPW, as evidence of toxicity persists for at least 19 days post-exposure. This study highlights the importance of considering persisting effects following FPW remediation when modeling potential spill scenarios.</p>
Persisting effects in Daphnia magna following an acute exposure to flowback and produced waters from the Montney Formation
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Supplementary material 1 from: Scheffer G, Rattray J, Kingston A, Li C, Ardakani OH, Hubert CR.J (2023) The provenance of microorganisms adapted to extreme salinity, extreme temperature, and toxic metals within the Montney shale formation. ARPHA Conference Abstracts 6: e108166. https://doi.org/10.3897/aca.6.e108166
Table S1: Measurements of arsenic, cadmium and mercury within various Montney formation samples.
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