Regeneration of salal : seedling establishment and the effects of overstory stand density on clonal morphology and expansion Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6m311r92b

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Regeneration of salal (Gaultheria shallon Pursh.) in the Coast Range of western Oregon was examined over two growing seasons in a three part study consisting of seedling establishment, clone excavation, and population sampling experiments. The effects of study site location, overstory stand density, and substrate on seedling emergence and survival were tested. Additionally, the effects of overstory stand density on clonal morphology and expansion, and on stem and rhizome population productivity were tested. Results of the seedling establishment experiment showed that emergence, survival and seedling:seed ratios were significantly affected by study site location, overstory stand density, and substrate (p < 0.05). Establishment was found to be highest at Cascade Head, in thinned stands, and on rotten logs and stumps. First-year survival on logs was found to be significantly correlated with percent sky (p < 0.0001, r = 0.516). Overall, just 1.4 percent (± 1.4 SE) of the seeds sown became established. Second-year seedling heights averaged 2.4 cm (± 0.16 SE) but ranged up to 20 cm. The clone excavation experiment allowed description of clonal architecture and identification of three clone types termed "invader", "senescent", and "remnant". Results showed that vegetative expansion and clone size were negatively correlated with overstory density. Clones up to 218 m in total rhizome length were found in low density stands. Invader clones expanded rhizome systems 16.2 percent per year on average. Clones in dense stands were small and did not expand. Significance of regressions of clone characteristics on overstory density indices ranged from 0.001 to 0.94. Correlation coefficients ranged from 0.027 to 0.894. Productivity of stem and rhizome populations were found to be negatively correlated with overstory density. Correlation coefficients for regressions of stem density, aboveground biomass, rhizome density and rhizome biomass on overstory density indices ranged from 0.584 to 0.944. Trends were consistent with previous findings for salal, as well as other species. Dynamics of salal regeneration with respect to forest succession were discussed.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0.82, on a Canon DR-9080C. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Digital Production (digitalproduc@gmail.com) on 2009-12-07T19:07:30Z No. of bitstreams: 1 HuffmanDavidW1992.pdf: 627383 bytes, checksum: 3d4138c14d0aa2f8c369bb57d09bcda1 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2009-12-09T16:25:10Z (GMT) No. of bitstreams: 1 HuffmanDavidW1992.pdf: 627383 bytes, checksum: 3d4138c14d0aa2f8c369bb57d09bcda1 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2009-12-09T16:21:36Z (GMT) No. of bitstreams: 1 HuffmanDavidW1992.pdf: 627383 bytes, checksum: 3d4138c14d0aa2f8c369bb57d09bcda1 (MD5)
  • description.provenance : Made available in DSpace on 2009-12-09T16:25:10Z (GMT). No. of bitstreams: 1 HuffmanDavidW1992.pdf: 627383 bytes, checksum: 3d4138c14d0aa2f8c369bb57d09bcda1 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items