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Quantifying relative contributions of source waters from a subalpine wetland to downstream water bodies

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dc.contributor.authorHathaway, Julia M.
dc.contributor.authorWestbrook, Cherie
dc.contributor.authorRooney, Rebecca
dc.contributor.authorPetrone, Richard
dc.contributor.authorLangs, Lindsey E.
dc.date.accessioned2023-06-14T15:28:00Z
dc.date.available2023-06-14T15:28:00Z
dc.date.issued2022
dc.descriptionThis is the pre-peer reviewed version of the following article: Hathaway, J.M., Westbrook, C. J., Rooney, R. C., Petrone, R.M., and Langs, L.E., (2022). Quantifying relative contributions of source waters from a subalpine wetland to downstream water bodies. Hydrological Processes. https://doi.org/10.1002/hyp.14679, which has been published in final form at https://doi.org/10.1002/hyp.14679. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en_US
dc.description.abstractSubalpine regions of the Canadian Rocky Mountains are expected to experience continued changes in hydrometeorological processes due to anthropogenically mediated climate warming. As a result, fresh water supplies are at risk as snowmelt periods occur earlier in the year, and glaciers contribute less annual meltwater, resulting in longer growing seasons and greater reliance on rainfall to generate runoff. In such environments, wetlands are potentially important components that control runoff processes, but due to their location and harsh climates their hydrology is not well studied. We used stable water isotopes of hydrogen and oxygen (δ2H and δ18O), coupled with MixSIAR, a Bayesian mixing model, to understand relative source water contributions and mixing within Burstall Wetland, a subalpine wetland (1900 m a.s.l.), and the larger Burstall Valley. These results were combined with climate data from the Burstall Valley to understand hydrometeorological controls on Burstall Wetland source water dynamics over spatiotemporal timescales. Our results show that the seasonal isotopic patterns within Burstall Wetland reflect greater reliance on snowmelt in spring and rainfall in the peak and post-growing season periods. We found a substantial degree of mixing between precipitation (rain and snow) and stored waters in the landscape, especially during the pre-growing season. These findings suggest that longer growing seasons in subalpine snow-dominated landscapes put wetlands at risk of significant water loss and increased evaporation rates potentially leading to periods of reduced runoff during the peak- growing season and in extreme cases, wetland dry out.en_US
dc.description.sponsorshipAlberta Innovates; Global Water Futures; Mountain Water Futures Program; Natural Science and Engineering Research Council of Canada, CREATE Program in Water Security; Natural Science and Engineering Research Council of Canada, Discovery Grants Programen_US
dc.description.versionPeer Revieweden_US
dc.identifier.citationHathaway, J.M., Westbrook, C. J., Rooney, R. C., Petrone, R.M., and Langs, L.E., (2022). Quantifying relative contributions of source waters from a subalpine wetland to downstream water bodies. Hydrological Processes. https://doi.org/10.1002/hyp.14679en_US
dc.identifier.doi10.1002/hyp.14679
dc.identifier.urihttps://hdl.handle.net/10388/14730
dc.language.isoenen_US
dc.publisherWiley Online Libraryen_US
dc.subjecthydrologyen_US
dc.subjectmeteorologyen_US
dc.subjectisotopesen_US
dc.subjectwetlandsen_US
dc.subjectsubalpineen_US
dc.subjectmixingen_US
dc.subjectrunoffen_US
dc.subjectclimateen_US
dc.titleQuantifying relative contributions of source waters from a subalpine wetland to downstream water bodiesen_US

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