Hyporheic Interactions Increase Zinc Exposure and Effects on Hyalella azteca in Sediments under Flow-Through Conditions

Environmental Toxicology and Chemistry
Anna M HarrisonG Allen Burton

Abstract

Groundwater-surface water interactions in the hyporheic transition zone can influence contaminant exposure to benthic macroinvertebrates. In streams, hyporheic flows are subject to varying redox conditions, which influence biogeochemical cycling and metal speciation. Despite these relationships, little is known about how these interactions influence the ecological risk of contaminants. The present study investigated the effects of hyporheic flows and zinc (Zn)-contaminated sediments on the amphipod Hyalella azteca. Hyporheic flows were manipulated in laboratory streams during 10-d experiments. Zinc toxicity was evaluated in freshly spiked and aged sediments. Hyporheic flows altered sediment and porewater geochemistry, oxidizing the sediments and causing changes to redox-sensitive endpoints. Amphipod survival was lowest in the Zn sediment exposures with hyporheic flows. In freshly spiked sediments, porewater Zn drove mortality, whereas in aged sediments simultaneously extracted metals (SEM) in excess of acid volatile sulfides (AVS) normalized by the fraction of organic carbon (fOC) [(SEM-AVS)/fOC] influenced amphipod responses. The results highlight the important role of hyporheic flows in determining Zn bioavailability to benth...Continue Reading

References

May 3, 2000·Archives of Environmental Contamination and Toxicology·D D MacDonaldT A Berger
Sep 6, 2003·Applied and Environmental Microbiology·Kevin FerisWilliam E Holben
Mar 23, 2005·Environmental Toxicology and Chemistry·G Allen BurtonAndrew Green
Jan 24, 2006·Journal of Contaminant Hydrology·Mattia ZaramellaAaron I Packman
May 16, 2008·Biometrical Journal. Biometrische Zeitschrift·Torsten HothornPeter Westfall
Apr 29, 2009·Journal of Environmental Quality·Matthew J CooperThomas M Burton
Sep 15, 2009·Environmental Science & Technology·Kevin P FerisWilliam E Holben
Mar 12, 2015·Environmental Toxicology and Chemistry·Kelsey M DannerG Allen Burton
May 13, 2015·Environmental Science & Technology·David M CostelloG Allen Burton
Oct 19, 2017·Environmental Science & Technology·Raissa M MendoncaDavid M Costello

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Citations

Aug 30, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Kendrick Jaglal
Dec 15, 2020·Environmental Pollution·Julie E AdamsPeter V Hodson
Aug 25, 2021·Environmental Pollution·Darren J KoppelDianne F Jolley

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