Article

 

Increasing synchrony of high temperature and low flow in western North American streams: double trouble for coldwater biota? Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/736669764

Descriptions

Attribute NameValues
Creator
Abstract
  • Flow and temperature are strongly linked environmental factors driving ecosystem processes in streams. Stream temperature maxima (T [subscript max_w]) and stream flow minima (Q[subscript min]) can create periods of stress for aquatic organisms. In mountainous areas, such as western North America, recent shifts toward an earlier spring peak flow and decreases in low flow during summer/fall have been reported. We hypothesized that an earlier peak flow could be shifting the timing of low flow and leading to a decrease in the interval between T [subscript max_w] and Q [subscript min]. We also examined if years with extreme low Q [subscript min] were associated with years of extreme high T [subscript max_w]. We tested these hypotheses using long-term data from 22 minimally human-influenced streams for the period 1950-2010. We found trends toward a shorter time lag between (T [subscript max_w] and Q [subscript min] over time and a strong negative association between their magnitudes. Our findings show that aquatic biota may be increasingly experiencing narrower time windows to recover or adapt between these extreme events of low flow and high temperature. This study highlights the importance of evaluating multiple environmental drivers to better gage the effects of the recent climate variability in freshwaters.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Arismendi, I., Safeeq, M., Johnson, S. L., Dunham, J. B., & Haggerty, R. (2013). Increasing synchrony of high temperature and low flow in western north american streams: Double trouble for coldwater biota? Hydrobiologia, 712(1), 61-70. doi:10.1007/s10750-012-1327-2
Journal Title
Journal Volume
  • 712
Journal Issue/Number
  • 1
Academic Affiliation
Keyword
Rights Statement
Funding Statement (additional comments about funding)
  • Financial support was providedby US Geological Survey, the US Forest Service PacificNorthwest Research Station and Oregon State University.
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2013-06-26T18:05:38Z (GMT). No. of bitstreams: 1 ArismendiIvanCEOASIncreasingSynchronyHigh.pdf: 481997 bytes, checksum: 37d02134a90c3bf62fba168cf94e49fd (MD5) Previous issue date: 2012-09-21
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-06-26T18:05:38Z No. of bitstreams: 1 ArismendiIvanCEOASIncreasingSynchronyHigh.pdf: 481997 bytes, checksum: 37d02134a90c3bf62fba168cf94e49fd (MD5)

Relationships

Parents:

This work has no parents.

Items