| Description |
1 online resource (v, 136 pages) : illustrations (some color), maps (some color) |
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text txt rdacontent |
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computer c rdamedia |
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online resource cr rdacarrier |
| Series |
General technical report PNW ; 978 |
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General technical report PNW ; 978.
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| Note |
"January 2020." |
| Bibliography |
Includes bibliographical references (pages 33-50). |
| Note |
Online resource; title from PDF cover (FS, viewed June 22, 2020). |
| Summary |
The Demonstration of Ecosystem Management Options (DEMO) Study is an operational-scale experiment in variable-retention harvests with six installations in western Washington and Oregon. Initiated in 1994, the experiment was designed to test key assumptions underlying standards and guidelines in the Northwest Forest Plan for regeneration harvests on matrix lands. The orthogonal portion of the six-treatment design (15 and 40 percent retention in both aggregated and dispersed patterns) is unique among large-scale variable-retention experiments, allowing for independent tests of responses to retention level and pattern and to their interaction. The DEMO Study is a multidisciplinary experiment designed to evaluate the dynamics of a diverse array of forest organisms (understory and overstory vegetation, wildlife, arthropods, and fungi), including their short-term responses to disturbance and longer term responses to changes in forest structure. However, maintaining financial support for the study over several decades has been challenging. Consequently, most studies were limited to the short term, although assessments of overstory structure and conifer regeneration extend to 18 to 19 years after treatment. This comprehensive reference document is designed to facilitate future research on the DEMO sites by providing information needed to relocate or reestablish the sampling grids, and to access existing data for comparative analyses or syntheses. It contains details on the study design, treatment histories, experimental sites, sampling infrastructure, response variables, methods and histories of sampling, and data and metadata archives. |
| Subject |
Trees -- Regeneration -- Washington (State) -- Observations.
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Trees -- Regeneration -- Oregon -- Observations.
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Forest regeneration -- Washington (State) -- Observations.
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Forest regeneration -- Oregon -- Observations.
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Forest management -- Washington (State) -- Observations.
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Forest management -- Oregon -- Observations.
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Variable retention -- Washington (State) -- Observations.
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Variable retention -- Oregon -- Observations.
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Régénération (Sylviculture) -- Washington (État) -- Observations.
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Régénération (Sylviculture) -- Oregon -- Observations.
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Forêts -- Gestion -- Washington (État) -- Observations.
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Forêts -- Gestion -- Oregon -- Observations.
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Coupe à rétention variable -- Washington (État) -- Observations.
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Coupe à rétention variable -- Oregon -- Observations.
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Forest management
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Forest regeneration
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Variable retention
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Oregon https://id.oclc.org/worldcat/entity/E39QbtfRDY9Q8vrYX74W7HTxKM
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Washington (State) https://id.oclc.org/worldcat/entity/E39PBJpymmTY6j9pxXGMd79FKd
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| Genre/Form |
Observations
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| Added Author |
Halpern, Charles B., author.
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Pacific Northwest Research Station (Portland, Or.), issuing body.
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| Other Form: |
Print version: Aubry, Keith Baker. Demonstration of Ecosystem Management Options (DEMO) study, a long-term experiment in variable-retention harvests (OCoLC)1160192445 |
| Gpo Item No. |
0083-B-06 (online) |
| Sudoc No. |
A 13.88:PNW-GTR-978 |
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