Understory production of transitional forested rangelands in the Blue Mountains of Eastern Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/administrative_report_or_publications/xp68kh77p

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The objective of this study was to quantify understory vegetation response to overstory manipulation of Blue Mountain eco-region forest. Forty nine ecological land units, including differing successional stages (sapling, pole, small saw, and saw log) and canopy cover (light and medium) in dry Grand Fir (Abies grandis), wet Grand Fir, dry Douglas Fir (Pseudotsuga menziesii), wet Douglas Fir, Ponderosa Pine (Pinus ponderosa) habitat types, and non-forest communities (Wet Meadow, Riparian Grass, Grassland, and Scabland) were sampled with 3 to 15 replicates per ecological land unit for production by species over 3 consecutive years. Production ranged from 799.9 to 1050.6 kg/ha for forest communities and from 686.5 to 3534.5 kg/ha for non-forest communities. Within forest communities, wet Douglas Fir habitats had lower production (P < 0.01) than the other habitat types. Non-forest communities varied in production (P < 0.01) with scabland being lowest and wet meadow - highest. Higher productions (P < 0.01) were obtained in recently logged dry Grand Fir and dry Douglas Fir habitats compared to the other successional stages. Otherwise, successional stages were similar in production (P > 0.01). Light and medium densities of overstory canopy cover did not influence (P > 0.01) understory production, except light covered wet Grand Fir having greater production (P < 0.01) than medium covered wet and dry Grand Fir habitats. Growth form production did not differ (P > 0.01) between successional stages, although later successional stages of wet Douglas Fir habitats declined in grasses and forbs with an increasing shrub component. In summary, overstory manipulation changes understory vegetation by increasing grasses and forbs in dry and wet environments of Grand Fir and in dry Douglas Fir communities, but did not influence other habitat types.
Resource Type
Date Available
Date Issued
Citation
  • Darambazar, E., D. Damiran, T. DelCurto, B. Riggs, M. Vavra, and J. Cook. 2007. Understory production of transitional forested rangelands in the Blue Mountains of Eastern Oregon [abstract]. In: Abstracts for the 60th Annual Meeting of the Society for Range Management, 10-16 February 2007, Reno/Sparks, Nevada.
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Language
File Format
File Extent
  • 19510 bytes
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2007-02-19T14:57:37Z (GMT). No. of bitstreams: 1 EDarambazarSRMabst07.pdf: 19510 bytes, checksum: bd09a4ae453fc65a9e9ea80f7caef78f (MD5) Previous issue date: 2007-02
  • description.provenance : Submitted by Daalkhaijav Damiran (damirand@onid.orst.edu) on 2007-02-16T21:24:31Z No. of bitstreams: 1 EDarambazarSRMabst07.pdf: 19510 bytes, checksum: bd09a4ae453fc65a9e9ea80f7caef78f (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2007-02-19T14:57:35Z (GMT) No. of bitstreams: 1 EDarambazarSRMabst07.pdf: 19510 bytes, checksum: bd09a4ae453fc65a9e9ea80f7caef78f (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items