Canopy structure influences arthropod communities within and beyond tree identity effects: Insights from combining LiDAR data, insecticidal fogging and machine learning regression... by Benjamin Wildermuth, Alice Penanhoat, Holger Sennhenn-Reulen, Dragan Matevski, Jochen Drescher, Mélaine Aubry-Kientz, Dominik Seidel, Andreas Schuldt

“…Despite this, arthropod ecological guild diversity was lower in non-native Douglas fir. Mixed stands had intermediate arthropod abundance and ecological guild diversity. …”
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Variation in anisotropic shrinkage of plantation-grown Pinus radiata wood by Eric Wang, Taian Chen, Shusheng Pang, Andrew Karalus

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Sorption Characteristic of Thermally Modified Wood at Varying Relative Humidity by Chenyang Cai, Fanding Zhou

“…The effect of TM on the hygroscopic properties of wood has been studied extensively; however, the sorption mechanism and the states of water of thermally modified wood (TMW) at varying relative humidity (RH) is limited. In this work, Douglas fir was modified at 180 °C, 200 °C and 220 °C for a duration of 2 h and the Hailwood–Horrobin model and NMR relaxometry were used after specimens were conditioned at eight different RHs. …”
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A War of Words: Do Conflict Metaphors Affect Beliefs about Managing “Unwanted” Plants? by Cameron G. Nay, Mark W. Brunson

“…Plants targeted for removal in the region include such iconic tree species as Douglas-fir and ponderosa pine as well as other less-valued species, such as Rocky Mountain juniper, that are common targets for removal nationwide. …”
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An insight into novel therapeutic potentials of taxifolin by Yang Liu, Xiaolu Shi, Ye Tian, Shaobo Zhai, Yuyan Liu, Zhengrong Xiong, Shunli Chu

“…Taxifolin is a flavonoid compound, originally isolated from the bark of Douglas fir trees, which is often found in foods such as onions and olive oil, and is also used in commercial preparations, and has attracted the interest of nutritionists and medicinal chemists due to its broad range of health-promoting effects. …”
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Climate Drives Episodic Conifer Establishment after Fire in Dry Ponderosa Pine Forests of the Colorado Front Range, USA by Monica T. Rother, Thomas T. Veblen

“…We harvested and aged over 400 post-fire juvenile ponderosa pine (Pinus ponderosa) and Douglas-fir (Pseudotsuga menziesii) trees using an improved tree-ring based approach that yielded annually-resolved dates and then assessed relationships between climate variability and pulses of tree establishment. …”
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Towards decoding the conifer giga-genome. by Mackay, J, Dean, J, Plomion, C, Peterson, D, Cánovas, F, Pavy, N, Ingvarsson, P, Savolainen, O, Guevara, M, Fluch, S, Vinceti, B, Abarca, D, Díaz-Sala, C, Cervera, M

“…Several new initiatives have been launched recently to sequence conifer genomes including pines, spruces and Douglas-fir. Owing to the very large genome sizes ranging from 18 to 35 gigabases, sequencing even a single conifer genome had been considered unattainable until the recent throughput increases and cost reductions afforded by next generation sequencers. …”

Pseudomonas fluorescens BBc6R8 type III secretion mutants no longer promote ectomycorrhizal symbiosis. by Cusano, A, Burlinson, P, Deveau, A, Vion, P, Uroz, S, Preston, G, Frey-Klett, P

“…The Mycorrhiza Helper Bacterium (MHB) Pseudomonas fluorescens BBc6R8 promotes the ectomycorrhizal symbiosis between Douglas fir roots and Laccaria bicolor. In this study, we identified a non-flagellar type III secretion system (T3SS) in the draft genome of BBc6R8 similar to that described in the biocontrol strain P. fluorescens SBW25. …”

Biological Activity of Plant Essential Oils against <i>Fusarium circinatum</i> by Jorge M. S. Faria, Esther Menéndez

“…The fungus, <i>Fusarium circinatum</i>, causes pitch canker in susceptible <i>Pinus</i> spp. and Douglas fir. Infection promotes damping-off, resin-streaming cankers, on main stems and lateral branches, shoot dieback, needle chlorosis or discoloration, cone death, and increased tree mortality. …”
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A dataset on the inventory of coniferous urban trees in the city of Orléans (France) by J.-P. Rossi, V. Imbault, T. Lamant, J. Rousselet

“…Other common species were the scots pine P. sylvestris, the Douglas-fir Pseudotsuga menziesii and different species of the genus Cedrus. …”
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Charcoal and Total Carbon in Soils from Foothills Shrublands to Subalpine Forests in the Colorado Front Range by Robert Sanford, Christopher Licata

“…There is a weak bimodal pattern of CC gain with elevation between foothills shrublands (1.2 mg CC ha−1) and the lower montane, ponderosa pine (1.5 mg CC ha−1) and Douglas-fir (1.5 mg CC ha−1) forest types prior to a mid-elevation decline in upper montane lodgepole pine forests (1.2 mg CC ha−1) before increasing again in the spruce/subalpine fir forests (1.5 mg CC ha−1). …”
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Tree Growth and Vegetation Diversity in Northern Idaho Forest Water Reclamation Facilities by Eureka Joshi, Mark D. Coleman

“…The greatest diameter response observed for reclaimed water amendment compared to controls was 166.1% for western redcedar, while Douglas-fir increased up to 116.4% and ponderosa pine increased up to 100.6%. …”
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Non-Destructive Lumber and Engineered Pine Products Research in the Gulf South U.S. 2005–2020 by R. Dan Seale, Rubin Shmulsky, Frederico Jose Nistal Franca

“…For the most part, it focuses on southern pine structural lumber, but other species such as red pine, spruce, Douglas fir, red oak, and white oak and other products such as engineered composites, mass timber, non-structural lumber, and others are included where appropriate. …”
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Bound Water Content and Pore Size Distribution of Thermally Modified Wood Studied by NMR by Chenyang Cai, Fanding Zhou, Jiabin Cai

“…The physical and mechanical properties of thermally modified wood (TMW) have been comprehensively studied; however, the quantitative analysis of water states and cell wall pores of TMW is limited. In this work, Douglas fir and Norway spruce were thermally modified at 180, 200 and 220 °C, and then studied by NMR cryoporometry method. …”
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Using Discrete-Point LiDAR to Classify Tree Species in the Riparian Pacific Northwest, USA by Julia Tatum, David Wallin

“…We then classified segments into Douglas fir (<i>Pseudotsuga menziesii</i>), black cottonwood (<i>Populus balsamifera</i> ssp. …”
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Analysis of Classification Methods for Identifying Stands for Commercial Thinning Using LiDAR by Bryce Frank, Francisco Mauro, Hailemariam Temesgen, Kevin R. Ford

“…Using a set of 653 fixed radius plots and a coincident LiDAR acquisition, we compared three different classification methods to predict CT eligibility for Douglas-fir (Pseudotsuga menziesii) stands in southwestern Oregon. …”
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Increasing atmospheric dryness reduces boreal forest tree growth by Ariane Mirabel, Martin P. Girardin, Juha Metsaranta, Danielle Way, Peter B. Reich

“…Younger trees and species like white spruce and Douglas fir exhibited higher VPD sensitivity, as did areas with high annual temperature and low soil moisture. …”
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Competitive Hierarchy Processes Support Mixed Species Regeneration in Strip-Cuts in the British Columbia Interior by Kazi L. Hossain, Andreas Hamann, Philip G. Comeau

“…The growth of two shade-intolerant (lodgepole pine and ponderosa pine), and two moderately tolerant (Douglas fir and white pine) species did surpass the growth of other more tolerant species under high light conditions in this study. …”
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Identifying non-thrive trees and predicting wood density from resistograph using temporal convolution network by Rapeepan Kantavichai, Eric C. Turnblom

“…Non-destructive resistance drilling measurements on South and West orientations of 274 trees in a 41-year-old Douglas-fir stand in Marion County, Oregon, USA were used as input series. …”
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Pendekatan ujian tak memusnah bagi penganalisaan ciri kenyal bahan kayu. by Ab. Aziz, Sidek, Haron, Salleh, Shaari, Abdul Halim, Chow, Sai Pew, Ahmad, Ghazali

“…Riviu ke atas kajian sampel kayu Douglas fir (Pseudotsuga menziesii Mirb.) beech (Fagus sylvatica L.) dan spruce (Piceabies (L)karst.) yang dilakukan menerusi teknik ujian tak memusnah ultra sonik turut dibincangkan.…”
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