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The effect of local stand structure on growth and growth efficiency in heterogeneous stands of ponderosa pine and lodgepole pine in central Oregon

Creator:: Mainwaring, Douglas B. and Maguire, Douglas A. (Douglas Alan)
Abstract:: Basal area and height growth were analyzed for individual trees in uneven-aged ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex. Loud.) stands in central Oregon. Basal area growth was modeled as a function of other stand and tree variables to address three general objectives:...
Resource Type:: Article
Full Text:: B. Mainwaring and Douglas A. Maguire Abstract: Basal area and height growth were analyzed for

Ten-year growth and mortality in young Douglas-fir stands experiencing a range in Swiss needle cast severity

Creator:: Maguire, Douglas A., Mainwaring, Douglas B., and Kanaskie, Alan
Abstract:: Swiss needle cast, a foliar disease caused by the Ascomycete Phaeocryptopus gaeumannii (T. Rohde) Petr., continues to afflict Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in north coastal Oregon. Permanent plots were installed in 1998 to assess growth impacts and monitor disease severity. Gross periodic annual increment was measured for three 2-year...
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Full Text:: mortality in young Douglas-fir stands experiencing a 3 range in Swiss needle cast severity 4 5 6

Impact of competitor species composition on predicting diameter growth and survival rates of Douglas-fir trees in southwestern Oregon

Creator:: Bravo, Felipe, Hann, David W., and Maguire, Douglas A. (Douglas Alan)
Abstract:: Mixed conifer and hardwood stands in southwestern Oregon were studied to explore the hypothesis that competition effects on individual-tree growth and survival will differ according to the species comprising the competition measure. Likewise, it was hypothesized that competition measures should extrapolate best if crown-based surrogates are given preference over diameter-based...
Resource Type:: Article
Full Text:: . Hann, and Douglas A. Maguire Abstract: Mixed conifer and hardwood stands in southwestern Oregon were

Bayesian models describing microhabitat associations of infrequently captured small mammals sampled under a complex hierarchical design

Creator:: Lam, Tzeng Yih and Maguire, Douglas A.
Abstract:: Knowledge about the relationship between habitat structure and abundance of a target species facilitates biodiversity conservation in managed forests. However, modeling the relationship for infrequent small mammal species in silvicultural experiments introduces the challenge of excessive zero counts and complex hierarchical sampling. A common solution has been to ignore infrequent...
Resource Type:: Article
Full Text:: associations of infrequently captured small mammals sampled under a complex hierarchical design. Authors

Fertilization impacts on Swiss needle cast disease severity in western Oregon

Creator:: Mulvey, Robin L., Shaw, David C., and Maguire, Douglas A.
Abstract:: The influence of fertilization on disease severity is unknown in most forest pathosystems. Fertilization treatments were randomly applied to 0.01 ha plots centered on individual dominant or co-dominant Douglas-fir trees in ten Douglas-fir stands from coastal Oregon to the foothills of the Oregon Cascade Range, USA. This region is affected...
Resource Type:: Article
Full Text:: . Mulvey ⇑, David C. Shaw, Douglas A. Maguire Department of Forest Engineering, Resources and Management

Predicting branch diameters on second-growth Douglas-fir from tree-level descriptors

Creator:: Maguire, Douglas A., Johnston, Stuart R., and Cahill, James M.
Abstract:: The quality of lumber and veneer recovered from logs of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is directly influenced by the maximum limb size attained on the crop tree. Because limb sizes are influenced by standdensity regimes, a need has arisen for quantitative tools that link a wide array of silvicultural...
Resource Type:: Article
Full Text:: -level descriptors Douglas A. Maguire, Stuart R. Johnston, and James Cahill Abstract: The quality of

Crown structure and growth efficiency of red spruce in uneven-aged, mixed-species stands in Maine

Creator:: Maguire, Douglas A., Brissette, John C., and Gu, Lianhong
Abstract:: Several hypotheses about the relationships among individual tree growth, tree leaf area, and relative tree size or position were tested with red spruce (Picea rubens Sarg.) growing in uneven-aged, mixed-species forests of south-central Maine, U.S.A. Based on data from 65 sample trees, predictive models were developed to (i) estimate the...
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Full Text:: , mixed-species stands in Maine Douglas A. Maguire, John C. Brissette, and Lianhong Gu Abstract:Several

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Creator:: Zhang, Jianwei, Ritchie, Martin W., Maguire, Douglas A., and Oliver, William W.
Abstract:: We analyzed 45 years of data collected from three ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) levels-of-growing-stock installations in Oregon (OR) and northern California (CA), USA, to determine the effect of stand density regimes on stand productivity and mortality. We found that periodic annual increment (PAI)...
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Full Text:: reduces mortality while maintaining stand productivity Jianwei Zhang, Martin W. Ritchie, Douglas A

Silviculture and Swiss needle cast : research and recommendations

Creator:: Filip, Gregory M., Kanaskie, Alan, Kavanagh, Kathleen L., 1955-, Johnson, Greg, Johnson, Randy (G. Randy), Maguire, Douglas A. (Douglas Alan), and Oregon State University. Forest Research Laboratory
Abstract:: For the past ten years, Douglas-fir on the Oregon and Washington coast has shown a progressive decrease in height and diameter increment as a result of Swiss needle cast, which is caused by Phaeocryptopus gaeumannii. In this contribution, we discuss the effects of silvicultural operations on Swiss needle cast and...
Resource Type:: Technical Report
Full Text:: Fores t Resea rch Labora to ry J u n e 2 0 0 0 R e s e a r c h C o n t r i b u t i o n 3 0 Editing

An annotated bibliography of selected guides for stream habitat improvement in the Pacific Northwest

Creator:: Keim, Richard F., Price, A. Blake, Hardin, Timothy Stone, Skaugset, Arne E., Bateman, Douglas S., Gresswell, Robert E., Tesch, S. D., and Oregon State University. Forest Research Laboratory
Abstract:: This annotated bibliography is a response to widespread interest in stream habitat improvement in the Pacific Northwest by land managers, governmental and nongovernmental organizations, and the lay public. Several guides to stream habitat improvement have been written in the past, but may not be easily accessible to people from diverse...
Resource Type:: Technical Report
Full Text:: RC 44 cov.indd M a r c h 2 0 0 4 R e s e a r c h C o n t r i

ScholarsArchive@OSU

The effect of local stand structure on growth and growth efficiency in heterogeneous stands of ponderosa pine and lodgepole pine in central Oregon

Ten-year growth and mortality in young Douglas-fir stands experiencing a range in Swiss needle cast severity

Impact of competitor species composition on predicting diameter growth and survival rates of Douglas-fir trees in southwestern Oregon

Bayesian models describing microhabitat associations of infrequently captured small mammals sampled under a complex hierarchical design

Fertilization impacts on Swiss needle cast disease severity in western Oregon

Predicting branch diameters on second-growth Douglas-fir from tree-level descriptors

Crown structure and growth efficiency of red spruce in uneven-aged, mixed-species stands in Maine

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Silviculture and Swiss needle cast : research and recommendations

An annotated bibliography of selected guides for stream habitat improvement in the Pacific Northwest

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