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Littérature scientifique sur le sujet « Douglas fir. Forest products »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 1 février 2022

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Articles de revues sur le sujet "Douglas fir. Forest products"

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Littke, K. M., T. B. Harrington, S. M. Holub, W. R. Littke, R. B. Harrison, and E. C. Turnblom. "Douglas-Fir Biomass Allocation and Net Nutrient Pools 15–20 Years after Organic Matter Removal and Vegetation Control." Forests 11, no. 9 (2020): 1022. http://dx.doi.org/10.3390/f11091022.

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Douglas-fir (Pseudotsuga menziesiivar. menziesii (Mirbel) Franco) plantation forests of the coastal Pacific Northwest have been intensively managed to improve the yield of forest products. However, the long-term effects of these management techniques have received limited research attention in this region. Three affiliate Long-Term Soil Productivity study sites were installed in Douglas-fir forests to understand the impacts of organic matter removals and vegetation control on soil productivity over time. Matlock and Fall River are located in Washington, USA and Molalla is located in Oregon. Or

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Diaz, David, Sara Loreno, Gregory Ettl, and Brent Davies. "Tradeoffs in Timber, Carbon, and Cash Flow under Alternative Management Systems for Douglas-Fir in the Pacific Northwest." Forests 9, no. 8 (2018): 447. http://dx.doi.org/10.3390/f9080447.

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Forest management choices offer significant potential to mitigate global climate change and biodiversity loss. To illuminate tradeoffs relevant to policymakers, forest sector stakeholders, and consumers of forest products, we utilize three Key Performance Indicators—average carbon storage in the forest and wood products; cumulative timber output; and discounted cash flow—to compare four alternative management scenarios for Douglas-fir forests on 64 parcels across western Oregon and Washington. These scenarios are designed to meet one of two alternative management objectives: (i) maximize Net P

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Widmer, F., B. T. Shaffer, L. A. Porteous, and R. J. Seidler. "Analysis of nifH Gene Pool Complexity in Soil and Litter at a Douglas Fir Forest Site in the Oregon Cascade Mountain Range." Applied and Environmental Microbiology 65, no. 2 (1999): 374–80. http://dx.doi.org/10.1128/aem.65.2.374-380.1999.

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ABSTRACT Nitrogen-fixing microbial populations in a Douglas fir forest on the western slope of the Oregon Cascade Mountain Range were analyzed. The complexity of the nifH gene pool (nifH is the marker gene which encodes nitrogenase reductase) was assessed by performing nested PCR with bulk DNA extracted from plant litter and soil. The restriction fragment length polymorphisms (RFLPs) of PCR products obtained from litter were reproducibly different than the RFLPs of PCR products obtained from the underlying soil. The characteristic differences were found during the entire sampling period betwee

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Harmon, Mark E., and Barbara Marks. "Effects of silvicultural practices on carbon stores in Douglas-fir western hemlock forests in the Pacific Northwest, U.S.A.: results from a simulation model." Canadian Journal of Forest Research 32, no. 5 (2002): 863–77. http://dx.doi.org/10.1139/x01-216.

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We used a new model, STANDCARB, to examine effects of various treatments on carbon (C) pools in the Pacific Northwest forest sector. Simulation experiments, with five replicates of each treatment, were used to investigate the effects of initial conditions, tree establishment rates, rotation length, tree utilization level, and slash burning on ecosystem and forest products C stores. The forest examined was typical of the Cascades of Oregon and dominated by Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and western hemlock (Tsuga heterophylla (Raf.) Sarg). Simulations were run until a C stea

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Lefsky, M. A., W. B. Cohen, and T. A. Spies. "An evaluation of alternate remote sensing products for forest inventory, monitoring, and mapping of Douglas-fir forests in western Oregon." Canadian Journal of Forest Research 31, no. 1 (2001): 78–87. http://dx.doi.org/10.1139/x00-142.

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This research evaluates the utility of several remote sensing data types for the purpose of mapping forest structure and related attributes at a regional scale. Several sensors were evaluated, including (i) single date Landsat Thematic Mapper (TM); (ii) multitemporal Landsat TM; (iii) Airborne Data Acquisition and Registration (ADAR), a sensor with high spatial resolution; (iv) Airborne Visible-Infrared Imaging Spectrometer (AVIRIS), a sensor with high spectral resolution; and (v) Scanning Lidar Imager Of Canopies By Echo Recovery (SLICER), a lidar sensor that directly measures the height and

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Amarasinghe, Vindhya, and John E. Carlson. "The development of microsatellite DNA markers for genetic analysis in Douglas-fir." Canadian Journal of Forest Research 32, no. 11 (2002): 1904–15. http://dx.doi.org/10.1139/x02-110.

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The microsatellite motifs AG, AC, and ATG were found to be the most abundant in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and several other conifer tree species among di-, tri-, and tetra-nucleotide simple sequence repeats (SSR). Colonies containing AG, AC, and ATG repeats were selected from enriched genomic libraries of Douglas-fir, and 603 were sequenced. Polymerase chain reaction (PCR) primers were designed from flanking sequences in 102 of the SSR clones, of which 50 primer pairs (for 10 AC-repeat microsatellites and 40 AG-repeat microsatellites) produced robust amplification prod

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Babrauskas, Vytenis. "Effective heat of combustion for flaming combustion of conifers." Canadian Journal of Forest Research 36, no. 3 (2006): 659–63. http://dx.doi.org/10.1139/x05-253.

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The heat of combustion of burning trees is often used in forest-fire hazard modeling to relate mass-loss results to the heat produced; therefore reliable values are needed. Experimental results for the effective heat of combustion of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees are presented as a function of moisture content. It is also shown that during a forest fire, the effective heat of combustion does not correspond to the oxygen-bomb-test value. Instead, the value will always be lower, since the heat of combustion of char is higher than that of the pyrolysate vapors, and char

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Nabuurs, G. J., and G. M. J. Mohren. "Carbon in Dutch forest ecosystems." Netherlands Journal of Agricultural Science 41, no. 4 (1993): 309–26. http://dx.doi.org/10.18174/njas.v41i4.637.

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Present stock of carbon in living biomass, litter and stable humus and annual accumulation of carbon in stems of 15 forest types was quantified from inventory data on growth and standing volume, and forest soil information in combination with literature data on forest biomass, as part of the Dutch National Research Programme on Global Air Pollution and Climate Change. Forest area in the Netherlands is about 330 000 ha, mainly young plantations of conifers (Scots pine, Douglas-fir, larch) on poor, dry sandy soils. Average age is about 50 yr. Present average standing volume is 170 msuperscript 3

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Koumbi-Mounanga, Thierry, Tony Ung, Kevin Groves, Brigitte Leblon, and Paul Cooper. "Moisture and surface quality sensing of Douglas-fir (Pseudotsuga menziesii var. menziesii) veneer products." Forestry Chronicle 89, no. 05 (2013): 646–53. http://dx.doi.org/10.5558/tfc2013-116.

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The potential of near-infrared spectroscopy (NIRS) to estimate moisture content (MC) and surface inactivation parameters of Douglas-fir (Pseudotsuga menziesii var. menziesii) veneer products was assessed. The best prediction model for MC was produced for the lower range of MC (0%–50%) of Douglas-fir veneers. Exposure at 180°C produced surface colour changes and the CIE-L*a*b* colour parameters measuring colour changes were better estimated using the 400 nm to 900 nm spectral data than the 1100 nm to 2400 nm spectral data. Increased exposure time resulted in lower wettability and hence increasi

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Seale, R. Dan, Rubin Shmulsky, and Frederico Jose Nistal Franca. "Non-Destructive Lumber and Engineered Pine Products Research in the Gulf South U.S. 2005–2020." Forests 12, no. 1 (2021): 91. http://dx.doi.org/10.3390/f12010091.

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This review primarily describes nondestructive evaluation (NDE) work at Mississippi State University during the 2005–2020 time interval. Overall, NDE is becoming increasingly important as a means of maximizing and optimizing the value (economic, engineering, utilitarian, etc.) of every tree that comes from the forest. 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. Much

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Thèses sur le sujet "Douglas fir. Forest products"

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Wilson, Jeremy Stuart. "Wind stability of naturally regenerated and planted Douglas-fir stands in coastal Washington, Oregon, and British Columbia /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5472.

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Littell, Jeremy Scott. "Climate impacts to forest ecosystem processes : Douglas-fir growth in northwestern U.S. mountain landscapes and area burned by wildfire in western U.S. ecoprovinces /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5559.

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Zustovic, Matthew. "Forest canopy gap size affects regeneration potential of interior Douglas-fir." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55426.

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There is growing concern about the long term productivity of forests in British Columbia due to changing climatic conditions. Interior Douglas-fir, an economically and culturally valuable conifer species, has recently had inconsistent regeneration success in the dry climatic regions of its distribution due to high summer soil surface temperatures, drought and growing season frost. Seeds of interior Douglas-fir germinate after mixed severity disturbances, but their survival appears to depend on the size of disturbance gaps, environmental resources and conditions, and colonization by mycorrhizal

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Haffenden, Austin. "Model forest system : even-aged Douglas fir plantation with invasive Rhododendron." Thesis, Keele University, 2015. http://eprints.keele.ac.uk/2349/.

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This thesis investigated the ecology and dynamics of Douglas fir (Pseudotsuga menziesii var. menziesii) dominated plantations at Coed-y-Brenin, Wales, whose transformation to continuous cover forestry has been delayed due to the presence of non-native invasive rhododendron (Rhododendron ponticum L). The literature review highlighted the complementary evolution of silviculture and modelling concepts to meet societal expectations and advance knowledge and understanding. It highlighted the development of hybrid, individual-based models, facilitated by advances in technology and complex systems th

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Kabzems, Richard Darwin. "Quantitative classification of soil nutrient regimes of some mesothermal Douglas-fir ecosystems." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24691.

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Previous attempts to classify nutrient regimes of forest soil have been qualitative evaluations utilizing vegetation and/or physiographic site characteristics, morphological soil properties, and parent material. The major objective of this study was to describe and classify the soil nutrient regimes (SNR) of some Pseudotsuga menziesii ecosystems on southern Vancouver Island, British Columbia. The order of increasing variability for forest floor properties was pH(H₂0) <TC <TN <TS <TP <exMg <exCa <exK <exMn <minN. The order of increasing variability for mineral soil properties was pH(H₂0)=pH(Ca

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Klinka, Karel, R. E. (Reid E. ). Carter, Qingli Wang, and M. C. (Michael Charles) Feller. "Influence of salal on height growth of coastal douglas-fir." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/677.

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The influence of salal on tree growth has attained considerable attention in coastal British Columbia. Field observations, surveys, and studies in the CWH zone have indicated poor growth performance of crop tree species in salal-dominated plantations and natural immature and old-growth stands. Where sites have been burned and planted, tree growth has improved; similar effects have been observed for naturally regenerated stands. Immature stands that developed after wind disturbance or harvesting feature rapid growth and nearly complete absence of salal. As studies have shown that ericaceous pla

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Kelliher, Francis Maurice. "Salal understory removal effects on the soil water regime and tree transpiration rates in a Douglas-fir forest." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25825.

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Salal (Gaultheria shallon Pursh.) understory in a 800 tree/ha 31-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stand was cut and removed from around one of each of four pairs of adjacent trees, the root zones of which were isolated using plastic sheeting buried to bedrock. The differences in the courses of the average root zone soil water content (Φ) during the growing season were small (maximum difference = 0.03 m³ m⁻³ ) because total evapotranspiration was only slightly higher where salal was present than where it had been removed. Porometer and lysimeter measurements on select

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Swetnam, Thomas W. "Radial Growth Losses in Douglas-Fir and White Fir Caused by Western Spruce Budworm in Northern New Mexico: 1700-1983." Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/302602.

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Final Report / Contract on 43-8371-4-628 / For: USDA, Forest Service, Southwestern Region<br>Regional outbreaks of western spruce budworms (Choristoneura occidentalis Freeman) have recurred at least three times in northern New Mexico since the early 1920's when the U. S. Forest Service first began systematic forest-pest surveys and documentation (Lessard 1975, U. S. Forest Service documents). The current outbreak was first noticed in a small area on the Taos Indian Reservation in 1974, and since then the defoliated areas have increased in New Mexico and Arizona to more than 370,000 acres of F

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Vitali, Valentina [Verfasser], Jürgen [Akademischer Betreuer] Bauhus, and Ulf [Akademischer Betreuer] Büntgen. ""Drought tolerance of Douglas-fir, Norway spruce and Silver fir in the Black Forest region – a dendrochronological analysis"." Freiburg : Universität, 2017. http://d-nb.info/1154385736/34.

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Davis, Geralyn Daphane. "Relationships between foliar nutrient status of second growth Douglas-fir and forest floor chemical properties." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26241.

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The objective of this study was to examine the relationships between Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) foliar nutrient status and forest floor chemical properties. Foliar nutrient analysis data were collected on 27, 50- to 140-year-old Douglas-fir stands, for which the forest floor chemical properties had previously been analysed. The 27 sites encompassed a broad geographical area within the Coastal Western Hemlock Biogeoclimatic Zone. Foliar samples were individually analysed for total S, N, P, K, Ca, Mg, B, Cu, Zn, Fe, Al, Mn and for AFe (active iron). Four foliar nutrient

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Livres sur le sujet "Douglas fir. Forest products"

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Davis, Wendy. Douglas fir. Children's Press, 1997.

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Hanley, Donald P. Coastal Douglas-fir forest and wildlife. World Forestry Center, 1992.

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Hanley, Donald P. Coastal Douglas-fir forest and wildlife. World Forestry Center, 1992.

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Hanley, Donald P. Coastal Douglas-fir forests and wildlife. World Forestry Center, 1992.

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Miller, J. T. Introduced forest trees in New Zealand: Recognition, role, and seed source. New Zealand Forest Research Institute, 1994.

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6

Minore, Don. Madrone duff and the natural regeneration of douglas-fir. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1987.

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Minore, Don. Madrone duff and the natural regeneration of douglas-fir. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1987.

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Topik, Christopher. Plant association and management guide for the Ponderosa pine, Douglas-fir, and Grand fir zones: Mount Hood National Forest. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1988.

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Randall, Carol. Douglas-fir beetle hazard rating system using the Oracle database and the Forest Service IBM platform. U.S. Dept. of Agriculture, Forest Service, Northern Region, 1999.

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Randall, Carol. Douglas-fir beetle hazard rating system using the Oracle database and the Forest Service IBM platform. U.S. Dept. of Agriculture, Forest Service, Northern Region, 1999.

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Chapitres de livres sur le sujet "Douglas fir. Forest products"

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Bastien, Jean-Charles, Leopoldo Sanchez, and Daniel Michaud. "Douglas-Fir (Pseudotsuga menziesii (Mirb.) Franco)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_7.

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Phillips, D. H., and D. A. Burdekin. "Diseases of Douglas fir (Pseudotsuga spp.)." In Diseases of Forest and Ornamental Trees. Palgrave Macmillan UK, 1992. http://dx.doi.org/10.1007/978-1-349-10953-1_7.

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Vermetten, A. W. M., P. Hofschreuder, and H. Harssema. "Deposition of Gaseous Pollutants in a Douglas Fir Forest." In Atmospheric Pollutants in Forest Areas. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4736-8_1.

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Mason, Richard R., and Boyd E. Wickman. "The Douglas-Fir Tussock Moth in the Interior Pacific Northwest." In Dynamics of Forest Insect Populations. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4899-0789-9_10.

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Cole, Dale W., Jana E. Compton, R. L. Edmonds, Peter S. Homann, and H. Van Miegroet. "Comparison of Carbon Accumulation in Douglas Fir and Red Alder Forests." In Carbon Forms and Functions in Forest Soils. Soil Science Society of America, 2006. http://dx.doi.org/10.2136/1995.carbonforms.c24.

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Wang, X., and D. Zabowski. "Nutrient composition of Douglas-fir rhizosphere and bulk soil solutions." In Root Demographics and Their Efficiencies in Sustainable Agriculture, Grasslands and Forest Ecosystems. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5270-9_7.

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Spittlehouse, D. L. "Determination of the Year-To-Year Variation in Growing Season Water Use of a Douglas-Fir Stand." In The Forest-Atmosphere Interaction. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5305-5_15.

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De Visser, P. H. B. "Effects of irrigation and balanced fertilization on nutrient cycling in a Douglas fir stand." In Nutrient Uptake and Cycling in Forest Ecosystems. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0455-5_41.

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Vermetten, Aart, Peter Hofschreuder, and Hendrik Harssema. "Air Pollution Monitoring in a Douglas Fir Forest/La Pollution de L’Air en Foret de Douglas-Vert." In Air Pollution and Ecosystems. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-4003-1_118.

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Smith, M. O., J. R. Simpson, and L. J. Fritschen. "Spatial and Temporal Variation of Eddy Flux Measures of Heat and Momentum in the Roughness Sublayer Above a 30-m Douglas-Fir Forest." In The Forest-Atmosphere Interaction. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5305-5_33.

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Actes de conférences sur le sujet "Douglas fir. Forest products"

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Narmanlıoğlu, Haldun, and Azime Ayşenur Çelimli. "A Critical Reading on the Visual Production of Infodemic." In COMMUNICATION AND TECHNOLOGY CONGRESS. ISTANBUL AYDIN UNIVERSITY, 2021. http://dx.doi.org/10.17932/ctcspc.21/ctc21.008.

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The problematic relationship between communication technologies and information is among the essential discussion topics of the academy. Concepts such as information bombardment, disinformation, and misinformation refer to incorrect, distorted, and corrupt information disseminated by means of communication. Unhealthy information and knowledge are seen as the biggest obstacle to the formation of a healthy public opinion. In the Covid 19 epidemic, which affects the whole world, the relationship between communication tools and information has come to the fore again. An "infodemic," which can be d

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Rapports d'organisations sur le sujet "Douglas fir. Forest products"

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Dykstra, Dennis P., Patricia K. Lebow, Stephen Pilkerton, Jamie Barbour, Susan Hummel, and Stuart R. Johnston. Effect of habitat-improvement thinnings on lumber products from coastal Douglas-fir. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2016. http://dx.doi.org/10.2737/pnw-rp-605.

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Dykstra, Dennis P., Patricia K. Lebow, Stephen Pilkerton, Jamie Barbour, Susan Hummel, and Stuart R. Johnston. Effect of habitat-improvement thinnings on lumber products from coastal Douglas-fir. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2016. http://dx.doi.org/10.2737/pnw-rp-605.

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Campbell, Robert K., and Albert I. Sugano. Genetic variation and seed zones of Douglas-fir in the Siskiyou National Forest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1993. http://dx.doi.org/10.2737/pnw-rp-461.

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Curtis, Robert O., Dean S. DeBell, Richard E. Miller, Michael Newton, J. Bradley St. Clair, and William I. Stein. Silvicultural research and the evolution of forest practices in the Douglas-fir region. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2007. http://dx.doi.org/10.2737/pnw-gtr-696.

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Tobalske, Bret W., Raymond C. Shearer, and Richard L. Hutto. Bird populations in logged and unlogged western larch/Douglas-fir forest in northwestern Montana. U.S. Department of Agriculture, Forest Service, Intermountain Research Station, 1991. http://dx.doi.org/10.2737/int-rp-442.

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Ottmar, Roger D., Colin C. Hardy, and Robert E. Vihnanek. Stereo photo series for quantifying forest residues in the Douglas-Fir-Hemlock type of the Willamette National Forest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1990. http://dx.doi.org/10.2737/pnw-gtr-258.

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Curtis, Robert O., David D. Marshall, and Dean S. DeBell. Silvicultural options for young-growth Douglas-fir forests: the Capitol Forest study—establishment and first results. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2004. http://dx.doi.org/10.2737/pnw-gtr-598.

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Mason, R. R., D. W. Scott, M. D. Loewen, and H. G. Paul. Recurrent outbreak of the Douglas-fir tussock moth in the Malheur National Forest: a case history. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1998. http://dx.doi.org/10.2737/pnw-gtr-402.

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Means, Joseph E., and Mary E. Helm. Height growth and site index curves for Douglas-fir on dry sites in the Willamette National Forest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1985. http://dx.doi.org/10.2737/pnw-rp-341.

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DeBell, Dean S., Constance A. Harrington, and John Shumway. Thinning shock and response to fertilizer less than expected in young Douglas-fir stand at Wind River Experimental Forest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2002. http://dx.doi.org/10.2737/pnw-rp-547.

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