Contributions of riparian vegetation and stream morphology to headwater stream temperature patterns in the Oregon Coast Range Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/v692t8806

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The role of riparian forests in maintaining temperatures of headwater streams is well established and is a foundation of forest practice rules designed to protect streamwater quality. However, detailed investigation is still needed quantifying specific characteristics of stream systems that affect streamwater temperature including riparian features, stream morphology, and subsurface interactions. The objectives of this research were to investigate summertime streamwater temperature patterns and identify characteristics within headwater streams and riparian zones that influence stream temperature. This study was designed to evaluate these relationships prior to logging in 38 perennial headwater catchments of the Oregon Coast Range. Stream reaches of greater than 1000 m were instrumented with temperature probes and selected stream and riparian characteristics were measured at 60-m intervals within each study reach in 2002 and 2003. A subset of the streams was examined in 2003 to determine the potential influence of streamwater residence time on temperature patterns. Findings suggest that canopy cover is the driving factor controlling summer stream temperature in these small headwater streams, but other stream and riparian characteristics should not be discarded. Longitudinal stream temperature patterns were quite variable for these forested streams and results suggest a high degree of complexity in small headwater streams. Maximum 7-day moving average temperatures ranged from 11.4°C to 16.8°C, with three streams above the standard 16°C threshold. Effects of stream and riparian characteristics on stream temperature were strongest when average of the weekly high temperature was assessed, suggesting this may be a more sensitive index of stream temperature than the commonly used maximum 7-day moving average. Results of tracer dilution tests were inconclusive in that temperature was not consistently correlated to residence time in streams.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2009-01-06T20:20:42Z (GMT) No. of bitstreams: 1 Smith, Danielle DeMersseman_2004_MS.pdf: 1819647 bytes, checksum: c4a6a376066a21ba36aa43278137b3cc (MD5)
  • description.provenance : Submitted by Anna Opoien (aoscanner@gmail.com) on 2009-01-02T22:20:23Z No. of bitstreams: 1 Smith, Danielle DeMersseman_2004_MS.pdf: 1819647 bytes, checksum: c4a6a376066a21ba36aa43278137b3cc (MD5)
  • description.provenance : Made available in DSpace on 2009-01-06T20:20:42Z (GMT). No. of bitstreams: 1 Smith, Danielle DeMersseman_2004_MS.pdf: 1819647 bytes, checksum: c4a6a376066a21ba36aa43278137b3cc (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2009-01-06T20:14:49Z (GMT) No. of bitstreams: 1 Smith, Danielle DeMersseman_2004_MS.pdf: 1819647 bytes, checksum: c4a6a376066a21ba36aa43278137b3cc (MD5)

Relationships

In Administrative Set:
Last modified: 08/08/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items