Index Catalog // ScholarsArchive@OSU

Species, diversity, and density affect tree seedling mortality from Armillaria root rot

Creator:: Gerlach, J. P., Reich, P. B., Puettmann, Klaus J., and Baker, T.
Abstract:: Mortality from Armillaria root rot is a major concern of forest management. Field experiments were conducted in Minnesota to evaluate interspecific differential susceptibility and to assess whether density or species composition, specifically the proportion of conifers in a plot, influences seedling mortality from Armillaria spp. Seedlings of 10 tree species...
Resource Type:: Article
Full Text:: susceptibility (p < 0.0001); balsam fir (Abies balsamea(L.) Mill.), tamarack (Larix laricina (Du Roi) K. Koch

A preliminary report on tree planting as a gorse control measure

Creator:: Lavender, Denis P.
Resource Type:: Technical Report
Full Text:: ` - ra r. a.`al j ` U t 'le '+ u t' } is < ', o Co d' - I 3r a"1 'rte ` . - .t j k' r °i'- ari a' I

Contributions of ectomycorrhizal fungal mats to forest soil respiration

Creator:: Phillips, C. L., Kluber, L. A., Martin, J. P., Caldwell, B. A., and Bond, B. J.
Abstract:: Distinct aggregations of fungal hyphae and rhizomorphs, or "mats", formed by some genera of ectomycorrhizal (EcM) fungi are common features of soils in coniferous forests of the Pacific Northwest. We measured in situ respiration rates of Piloderma mats and neighboring non-mat soils in an old-growth Douglas-fir forest in western Oregon...
Resource Type:: Article
Full Text:: . P. Martin3, B. A. Caldwell3, and B. J. Bond4 1Center for Accelerator Mass Spectrometry, Lawrence

Arbutus menziesii (Ericaceae) facilitates regeneration dynamics in mixed evergreen forests by promoting mycorrhizal fungal diversity and host connectivity

Creator:: Kennedy, Peter G., Smith, Dylan P., Horton, Tom R., and Molina, Randy J.
Abstract:: • Premise of study: In the mixed evergreen forests in the western United States, Arbutus menziesii is able to quickly resprout following disturbance and, as such, act as a nurse tree during forest regeneration. The mechanism for this nurse tree effect has frequently been ascribed to mycorrhizal fungi, but no...
Resource Type:: Article
Full Text:: CONNECTIVITY 1 PETER G. KENNEDY 2,6 , DYLAN P. SMITH 2,3 , TOM R

Evidence for Mate Guarding Behavior in the Taylor's Checkerspot Butterfly

Creator:: Bennett, Victoria J., Smith, Winston P., and Betts, Matthew G.
Abstract:: Discerning the intricacies of mating systems in butterflies can be difficult, particularly when multiple mating strategies are employed and are cryptic and not exclusive. We observed the behavior and habitat use of 113 male Taylor’s checkerspot butterflies (Euphydryas editha taylori). We confirmed that two distinct mating strategies were exhibited; patrolling...
Resource Type:: Article
Full Text:: Butterfly Victoria J. Bennett & Winston P. Smith & Matthew G. Betts Revised: 29 July 2011 /Accepted: 9

Short-term response of Dicamptodon tenebrosus larvae to timber management in southwestern Oregon

Creator:: Leuthold, Niels, Adams, Michael J., and Hayes, John P.
Abstract:: In the Pacific Northwest, previous studies have found a negative effect of timber management on the abundance of stream amphibians, but results have been variable and region specific. These studies have generally used survey methods that did not account for differences in capture probability and focused on stands that were...
Resource Type:: Article
Full Text:: , Oregon State University, 321 Richardson Hall, Corvallis, OR 97331, USA MICHAEL J. ADAMS, Forest and

Comparative hazard assessment for protected species in a fire-prone landscape

Creator:: Roloff, Gary J., Mealey, Stephen P., and Bailey, John D.
Abstract:: We conducted a comparative hazard assessment for 325,000 ha in a fire-prone area of southwest Oregon, USA. The landscape contains a variety of land ownerships, fire regimes, and management strategies. Our comparative hazard assessment evaluated the effects of two management strategies on crown fire potential and northern spotted owl (Strix...
Resource Type:: Article
Full Text:: , A., Breshears, D. D., Hogg, E. H., Gonzalez, P., 542 Fensham, R., Zhang, Z., Castro, J., Demidova

Bearing Strength Capacity of Continuous Supported Timber Beams: Unified Approach for Test Methods and Structural Design Codes

Creator:: Leijten, A. J. M., Franke, S., Quenneville, P., and Gupta, R.
Abstract:: Bearing or compressive strength capacity perpendicular to the grain of timber beams is a troublesome issue. Not only do many different load cases occur in practice that are not covered by structural timber design codes but also these codes provide only a basic provision and vary throughout continents. Code design...
Resource Type:: Article
Full Text:: , Designation D 198-09, ASTM, West Conshohocken, PA. 708 pp DOI: 10.1520/D0198-09 Bodig J. and Jayne B. A

Modeling the incidence and severity of hemlock dwarf mistletoe in 110-year-old wind-disturbed forests in Southeast Alaska

Creator:: Trummer, L. M., Hennon, P. E., Hansen, E. M., and Muir, P. S.
Abstract:: A model was developed to predict the severity of dwarf mistletoe (Arceuthobium tsugense (Rosendahl) G.N. Jones) in western hemlock trees (Tsuga heterophylla (Raf.) Sarg.) that developed within forests of Southeast Alaska that experienced near-catastrophic windthrow in the late 1800s. The model suggests that the degree of dwarf mistletoe severity on...
Resource Type:: Article

Seeding dates and Douglas fir germination

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: _.,; i a y.r _r ti alb _ __ , _, 1 }/ r by . - '` ;,' Denis P. Lavender, - :A L - - ' r i N I

ScholarsArchive@OSU

Species, diversity, and density affect tree seedling mortality from Armillaria root rot

A preliminary report on tree planting as a gorse control measure

Contributions of ectomycorrhizal fungal mats to forest soil respiration

Arbutus menziesii (Ericaceae) facilitates regeneration dynamics in mixed evergreen forests by promoting mycorrhizal fungal diversity and host connectivity

Evidence for Mate Guarding Behavior in the Taylor's Checkerspot Butterfly

Short-term response of Dicamptodon tenebrosus larvae to timber management in southwestern Oregon

Comparative hazard assessment for protected species in a fire-prone landscape

Bearing Strength Capacity of Continuous Supported Timber Beams: Unified Approach for Test Methods and Structural Design Codes

Modeling the incidence and severity of hemlock dwarf mistletoe in 110-year-old wind-disturbed forests in Southeast Alaska

Seeding dates and Douglas fir germination

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