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dc.contributor.authorYano, Yuriko
dc.contributor.authorQubain, Claire
dc.contributor.authorHolyman, Zach
dc.contributor.authorKelsey, Jencso
dc.contributor.authorHu, Jia
dc.date.accessioned2020-01-21T19:37:42Z
dc.date.available2020-01-21T19:37:42Z
dc.date.issued2019-07-19
dc.identifier.citationYano, Yuriko, Claire Qubain, Zach Holyman, Jencso Kelsey, and Jia Hu. "Snowpack influences spatial and temporal soil nitrogen dynamics in a western U.S. montane forested watershed." Ecosphere10 , no. 7(July 2019). DOI:10.1002/ecs2.2794.en_US
dc.identifier.issn2150-8925
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/15808
dc.description.abstractDeclines in winter snowpack have increased the severity of summer droughts in western U.S. forests, with the potential to also impact soil available nitrogen (N). To understand how snowpack controls spatiotemporal N availability, we examined seasonal N dynamics across elevation, aspect, and topographic position (hollow vs. slope) in a forested watershed in the northern Rocky Mountains. As expected, peak snow‐water equivalent (SWE) was generally greater at higher elevations and on north‐facing aspects. However, the effects of topographic position and snowdrift led to variability in snow accumulation at smaller spatial scales. Spatial patterns of the snowpack, in turn, influenced soil moisture and temperature, with greater SWE leading to generally higher soil moisture levels during the summer and smaller temperature fluctuations throughout the year. Wetter conditions in spring or fall generally supported greater inorganic N pools, but at the driest locations (low‐elevation slope), pulses of N mineralization in summer may have played important roles in overall N dynamics. More importantly, soil moisture during the summer appeared to be more influenced by antecedent snowpack from the previous year than by current‐year summer rain. Subsequently, N mineralization under snowpack may be strongly influenced by soil moisture and temperature conditions from the previous fall, before snowpack accumulation. Together, our results indicate that snowpack strongly influences N dynamics beyond the current growing season in western coniferous forests through mediation of soil moisture and temperature, and suggest that further decline in winter snowpack may affect these forests through constraints in both water and N availability.en_US
dc.language.isoen_USen_US
dc.rightsCC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/legalcodeen_US
dc.titleSnowpack influences spatial and temporal soil nitrogen dynamics in a western U.S. montane forested watersheden_US
dc.typeArticleen_US
mus.citation.issue7en_US
mus.citation.journaltitleEcosphereen_US
mus.citation.volume10en_US
mus.identifier.doi10.1002/ecs2.2794en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentEcology.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage3en_US


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CC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.
Except where otherwise noted, this item's license is described as CC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.

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