EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/05/2017 | 3:15 PM - 3:30 PM | Influences of hyporheic upwelling on the toxicity of zinc contaminated sediments | 305B
Influences of hyporheic upwelling on the toxicity of zinc contaminated sediments
Despite the importance of groundwater-surface water interactions for aquatic habitat, we have limited understanding of how hyporheic flows may interact with contaminants to affect stream biota. This research investigates the effects of hyporheic upwelling on the amphipod, Hyalella azteca, when exposed to zinc contaminated sediments. Elevated zinc concentrations are often observed in urban stream sediments as a produce of stormwater runoff and legacy metal contamination. In this experiment, we manipulated hyporheic upwelling and zinc contamination in flow-through artificial streams over time. Hyalella azteca survival was lowest in streams with both zinc and hyporheic upwelling, compared to streams with zinc contamination only. The results highlight the importance of hyporheic flows in altering metal bioavailability to benthic macroinvertebrates, and suggest future assessments of hyporheic flows in in situ ecotoxicology research.
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
- C10 Biogeochemistry
- C13 Ecotoxicology
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Anna Harrison
(), Institute for Great Lakes Research, Central Michigan University, harri25a@cmich.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
G. Allen Burton
(), University of Michigan, burtonal@umich.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -