SMC Quarterly News www.standmgt.org Stand Management Cooperative College of Forest Resources, University of Washington 3rd Quarter 2007 From the Director The school year has just finished, the field season has been completed and the database is being updated and will be ready by the end of June. Please contact Randy Collier (rcollier@u.washington.edu) to get the updated CD if you are qualified under the data policy in the SMC By-laws. We are looking forward to a very productive summer season. Between the SMC, Precision Forestry Cooperative, the Corkery Family Chair, and other grants we will Dave Briggs, SMC Director have a number of students working in the field this summer. Paul Footen and Royce Andersen who were on the 2006 summer crew have returned as both are starting their Masters programs. They will be joined by Kim Littke, another new Masters student, Alice Drury and Melanie Welch both of whom are seniors. Randy Collier will be working with Kim gathering detailed site characterizations at the three GGTIV installations planted in 2005. The other crew members will be visiting a variety of installations for vegetation and habitat surveys, soil sampling, moth surveys, stem mapping, acoustic testing of trees, etc. Cindy Flint completed her Masters thesis “Leaching of nitrogen from the rooting zone of Douglas-fir forests following urea fertilization and potential impacts on water quality of the Hood Canal” and will be developing an article for journal submission; her thesis is available at http:// soilslab.cfr.washington.edu/publications/. inside: From the Director This is our first issue that will be distributed only in electronic form. By 1 eliminating the print form we eliminate printing and mailing costs, the mailing Progress on the Tree to Log to Product Non-destructive Testing Study 5 cost limit on size, and the print shop queue. In this issue you will find a First Growth Measurements on the GGTIV Installations 7 testing study, a report summarizing the first growth measurements on the Abstracts and Publications 13 three GGTIV installations planted in 2005, and information concerning the Meetings 14 summary of the SMC Spring Meeting, an update on the Non-destructive SMC Fall Meeting. SMC Spring Meeting The meeting began on April 26 with 60 attendees from 20 organizations. Policy Committee Chair Gene McCaul opened the meeting and stressed the importance of the strategic planning process that has produced a draft strategic plan document that would be discussed during the meeting. Director Dave Briggs reviewed a handout summarizing accomplishments thus far in 2007. Cumulative funding since the SMC was founded in 1985 has reached $17.1 million. The 06/07 field work is nearly finished and includes first measurements of the 2005 GGTIV installations and work on the non-destructive testing study. External funds received thus far include $40,000 from NCASI for continued work at Fall River, $70,600 per year for the next three years supporting the BC Ministry of Forests Research Branch for work on the BC installation, funds from the Corkery Family Foundation to support summer field crew work, and Gessel Scholarship funding of graduate students. Three publications are or soon will be in print and several are in review. The Strategic Planning Committee met in February and developed a document that was discussed in the meeting. . The SMC also has a Visiting Scholar, Johannes Breidenbach from Germany and a Post Doc, Brian Strahm. The Strategic Planning Committee met on February 27, 2007 and developed a strategic plan document which was sent in advance of the meeting. The mission and vision statements were reviewed. The mission statement remains as follows “The mission of the Stand Management Cooperative is to provide a continuing source of high-quality information on the long-term effects of silvicultural treatments and treatment regimes on stand and tree growth and development and on wood and product quality.” After much discussion the following vision statement was adopted “To be the preeminent provider of silvicultural research information and analysis in the Pacific Northwest… • Through the ongoing development of quality silvicultural and wood quality research information, by • Providing leadership and promotion of collaborative research synthesis throughout the region for the purposes of • Furthering global competitiveness of the forest products sector and improving environmental benefits to society.” A set of draft goals were reviewed and modified with the following six adopted: 2 1. Define and design research to understand the short and long term effects of silvicultural treatments on timber (growth and yield, wood quality, etc.) and environmental (habitat, carbon, water, etc.) values of forests. 2. Create, maintain and monitor appropriate field installations with consistent field measurement protocols, and develop a corresponding database management system to implement the research needs defined by objective 1. 3. Conduct analyses and develop models to synthesize and integrate the information into products that can support decision making. 4. Conduct technology transfer to assist in the implementation of knowledge gained from the research. 5. Foster opportunities for training future professionals. 6. Develop opportunities for collaboration with other organizations and individuals and opportunities to leverage SMC research programs. Specific objectives and timelines within each of these goals were reviewed. The Strategic Planning Committee will incorporate suggestions into a new draft for discussion at the Fall Meeting. The subject of merging the Stand Management and Precision Forestry Cooperatives has been suggested by individuals from both cooperatives. After discussion, it was agreed that this should also consider relationships with the Center for Intensive Plantation Silviculture. This will also be discussed at the May 24 Precision Forestry Cooperative Executive Board meeting and, if that group agrees, a joint committee should be formed to investigate this idea further. Silviculture Project Report: Eric Turnblom reviewed the 06/07 field season in which a total of 47 installations (462 plots) were visited. This includes 12 Type I installations (164 plots) with full measurements and 4 installations (5 plots) with partial measurements and foliage samples from 12 plots. Five Type II installations (20 plots) received full measurements, one installation (1 plot) with partial measurement and 4 installations (19 plots) destructively sampled for the tree to product acoustic study. Seven Type III installations (48 plots) received full measurements, six (22 plots) received partial measurements and 5 plots were thinned. The three 2005 GGTIV installations (66 plots) received their first measurement and the three 2006 GGTIV’s had survival surveys. Five carry-over study installations (10) plots were measured, and two contract installations (56 plots) were measured. Procedures for continued monitoring of the GGTIV’s were reviewed. Eric noted several publications that are now in print and briefly summarized previous TAC meetings. He announced that the Tree List Generator Graphical User Interface is available. 3 Modeling Project Report: Greg Johnson announced that he was stepping down as Modeling Project Leader and that Dave Marshall will take his place. Dave reviewed the recent accomplishments and status of ORGANON and the young stand model. He also reviewed some ideas for future work that lay the groundwork for a future TAC meeting. Nutrition Project Report: Rob Harrison summarized the latest information from the carry-over study which warrants continued monitoring as some interesting results are now beginning to emerge. There was discussion to expand this study to some other sites with different treatment levels and it was agreed that this could, and will be done. Rob reviewed the current status of the proposal for new fertilization trials. A draft has been circulated, comments are being incorporated, and a budget is under development. The updated proposal will be sent for further review and discussion. Wood Quality Project Report: Because of the field demands of the bear damage and non-destructive testing studies, the TAC did not meet as was planned at the Fall 2006 meeting; a meeting later this Spring is now in early planning. All of the woods and log yard work, veneer milling and sawmilling for the AGENDA 2020 project “Non-destructive evaluation of wood quality in standing Douglas-fir trees and logs” has been completed. The veneer was shipped to USFPL in early January and testing is compete. The lumber will be planed on May 1-2 and shipped to USFPL for testing. The bear damage study was also completed. Reports on both were presented in the technical session. Technical Session: The afternoon of April 26 and morning of April 27 were devoted to research presentations and progress reports; these can be found on the SMC website under the SMC Spring Meeting Agenda link. www.cfr.washington.edu/research.smc/. Fall Meeting The SMC Fall Meeting has been scheduled for September 17-18 at Oregon State University at the Willamette Room which is located in The Valley Library. A block of rooms is being held under “Stand” at the Salbasgeon Suites and Conference Center, 800-965-8808, (https://www.salbasgeon.com/properties.html). The agenda, field trip itinerary and registration costs are being developed and will be posted on the web as updates become available (http:// www.cfr.washington.edu/research.smc/). Please contact Megan O’Shea (moshea@u.washington.edu) if you have any questions. 4 Non-destructive Testing Study Update Wood logs and cookies at Installation 805. All field, milling, and veneer testing has been completed and lumber testing is nearly finished on the AGENDA 2020 project “Non-destructive evaluation of wood quality in standing Douglas-fir trees and logs”. Collaborators include the University of Washington College of Forest Resources (SMC and PFC), USDA Forest Service, PNW Research Station, USDA Forest Service, Forest Products Laboratory, Fibre-Gen, New Zealand, Green Diamond Resource Company, Port Blakely Tree Farms, Washington Department of Natural Resources, and Weyerhaeuser Company. Milling was done at the Weyerhaeuser veneer mill in Foster, OR. and at the South Union Sawmill in Elma, WA. The tables summarize statistics on the Type II installations sampled and the quantities of material processed for the veneer and lumber phases of this study. The discrepancy between the gross and net number of trees for the veneer study reflects weather related problems that prevented delivery of logs from the veneer trees at the Viola site in time for the peeling. At present we are working on checking and integrating all of the data, completing measurements from cookies cut from the ends of each log, and developing some preliminary analyses. Weyerhaeuser is taking strips from each of the cookies for xray densitometry and possible other basic tests of wood properties in the future. Presentations on this project will be given at the 15th International Bert Hasselberg and Bob Gonyea weighing Symposium on cookies at Installation 808. Nondestructive Testing of Wood in Duluth, MN on September 10-12 and at the IUFRO All Division 5 Conference in Taipei, Taiwan on October 29-November 2. 5 South Union Sawmill in Elma, WA. Non-destructive Testing Study Update Inst # 803 805 807 808 SMCType II Installations for Tree to log to mill test on NDT tools Name Owner Location Age (2005) SI (King) QMD, in HT40, ft 50 140 14 126 Beeville Loop Green Diamond Shelton, WA 35 135 12 105 Pilchuck Bridge WADNR Mt Vernon, WA Viola Port Blakely Estacada, OR 33 115 11 82 M21 Road Weyerhaeuser Salem, OR 48 88 13 102 Veneer Trees Wood Logs (35ft) Mill Logs (17ft) Veneer Blocks (8.5ft) Veneer Sheets Veneer from Weyerhaeuser veneer mill in Foster, OR. Number Scribner Scale Cubic Scale Number Total # Full # Half Volume, cu.ft Gross 114 236 23,170 4,035 695 Net 84 186 22,360 3,909 372 627 4,516 877 2,281 Lumber Trees Wood Logs (33ft) Mill Logs (16ft) Lumber Lumber from South Union Sawmill in Elma, WA. 6 Number Number Scribner Scale Cubic Scale Number 2x4 2x6 Dimension Volume 1x4 1x6 Board Volume Total Volume Gross 114 266 26,730 4,524 425 25,815 1,853 27,668 Net 114 246 26,120 4,382 318 443 1,318 25,290 133 143 1,823 27,112 First Growth Measurements on the Type IV GGTIV Installations Eric C. Turnblom, Silviculture Project Leader, SMC, University of Washington and Keith Jayawickrama, Director, NWTIC, Oregon State University INTRODUCTION Forest managers need information on the joint effects of tree spacing, expected genetic gain level, fertilization, and vegetation control on growth, yield, and quality of trees in coastal Douglas-fir plantations. In partial fulfillment of this need, the NorthWest Tree Improvement Cooperative (NWTIC) and the Stand Management Cooperative (SMC) have collaborated and jointly designed a large scale silvicultural experiment in the Grays Harbor breeding zone to meet the following objectives: 1) provide information to guide managers currently applying combinations of genetics, spacing and vegetation control; 2) provide linkages with other studies (such as Genetic Gain Trials, intensive vegetation management trials, spacing trials (like SMC Type III), that will assist modeling; 3) compare realized gains (per unit area basis) with predicted gains (individual tree basis); and 4) compare estimates of growth, yield, and quality parameters for populations with different expected growth potentials. For logistical reasons, three of six total replications were planted in 2005, and three more in 2006. This report summarizes the preliminary findings from analyzing the three installations planted in 2005, which are the only measurements available to date. EXPERIMENTAL MATERIAL & METHODS The experimental design controls three factors. The factors are expected genetic gain having three levels: unimproved (woods run), moderate genetic gain, and elite genetic gain; a spacing factor with three levels: 7 x 7, 10 x 10, and 15 x 15 ft; and a vegetation control intensity factor with two levels: one herbicide application at planting, multiple herbicide applications to keep 80% bare ground until crown closure. Seedlings were grown at the Sylvan-Vale nursery as Styro-15 plugs. At shipping, 100 trees of each genetic gain level were randomly sampled and measured for caliper and total height. Seedlings were planted in mid-February 2005 and seedling selection rates, i.e., the proportion of seedlings planted compared to the final inventory, was recorded for each gain level. 7 There are 22 plots at each research location, hypothetically arranged spatially as in Figure 1. The Genetic Gain Trial plots in the experiment are arranged within an installation in five blocks of three plots, where each block consists of one plot of each level of genetic gain all at the 10 x 10 ft spacing. The Type IV Trial plots are dispersed within an installation, having two plots in common with the Genetic Gain Trial. Each installation is fenced around the perimeter of the entire unit. Initial measurements were taken in the dormant season two growing seasons after planting, that is, in winter 2007. Measurements included basal diameter at 6 in. above ground on all trees, Diameter Breast Height (DBH) on all trees tall enough to have a DBH, total height on all trees, crown width in two perpendicular directions on a 42-tree sample, height-to-live crown on the same 42-tree sample, comments when warranted (such as DE for dead, BR for browse, etc.), and the genetic family tab number on elite and moderate gain stock. The appropriate analysis identifies each installation as a statistical block, with Genetic Gain Trial blocks nested within each installation. The genetic gain, spacing, and vegetation control factors are all crossed in typical factorial treatment structure. Response variables analyzed were survival, total height, basal diameter, and crown width. RESULTS Intensity of vegetation control did not contribute to any differences in treatments at this stage. This seems to indicate that the initial herbicide treatments may have kept competing vegetation from taking over enough growing space to interfere with the trees, even after two growing seasons. 8 Figure 1. Schematic layout of a typical GGTIV installation showing expected genetic gain level (G1, G2, G3), spacing level (S1, S2, S3), and vegetation control level (V1,V2). Purple and gold colored plots denote shared GG trial and Type IV trial plots. Green plots are the only ones without complete vegetation control (level V1). Plots with no indication of spacing or vegetation control level are planted 10 x 10 and receive complete control treatment. Survival The statistical model for survival explained 99.5% of the total variation, exhibiting a standard error of the estimate of 0.0620 (units of %). Installation produced a significant effect on survival (p < 0.0001). On average, Crane Creek (installation 603) had the best survival at 92.2%, followed by Donkey Creek 2 (installation 601) at 91.6%, and then Donaldson Creek (installation 602) with 84.8%. Effects of spacing on survival appeared to be marginally significant at this stage (p = 0.0464). Overall, the tighter spacings exhibited marginally better survival. Interestingly, the genetic gain x spacing interaction was also significant (p = 0.004). It appears at this early date that unimproved stock survives slightly better at the 7 x 7 ft spacing, but elite gain survives marginally better at the 15 x 15 ft spacing (see Figure 2). Estimated survival (%) - 1st Meas 2005 GGTIV 1 0.8 0.6 0.4 0.2 0 7x7 10x10 Spacing (ft.) woods run moderate 15x15 high Figure 2. Mean survival (in percent) for each genetic gain – spacing combination. Error bars represent +/- one standard error of the mean. Total Height The statistical model for total height explained 99.5% of the total variation, with an observed standard error of the estimate of 0.1688 ft. As expected, a large installation effect was observed (p < 0.0001). Donkey Creek 2 averaged 2.72 ft, followed by Donaldson Creek with an average height of 2.23 ft, while trees at Crane Creek averaged 2.09 ft. The effect of spacing on height appeared to be significant (p= 0.0294). The 10 x 10 spacing is exhibiting the tallest trees averaged over all gain levels at this stage. Genetic gain level does not impact or interact with spacing or vegetation control intensity at this stage (see Figure 3). 9 Estimated Height - 1st M eas. 2005 GGTIV 2.6 Average Total Height (ft) 2.4 2.2 2 1.8 1.6 1.4 1.2 1 7x7 10x10 Spacing (ft) woods run moderate 15x15 high Figure 3. Mean height for each genetic gain – spacing combination. Error bars represent +/one standard error of the mean. Basal Diameter - 1st M eas 2005 GGTIV 0.7 Basal Diameter (in.) 0.6 0.5 0.4 0.3 0.2 0.1 0 7x7 woods run 10x10 Spacing (ft.) moderate 15x15 high Figure 4. Mean basal diameter for each genetic gain – spacing combination. Error bars represent +/- one standard error of the mean. 10 Basal Diameter The statistical model for basal diameter explained 99.5% of total variation, exhibiting an observed standard error of the estimate of 0.04519 in. Again, the installation effect was significant (p << 0.01). Basal diameter at Donkey Creek 2 averaged 0.74 in., at Donaldson Creek basal diameter averaged 0.56 in., while at Crane Creek, basal diameter averaged 0.52 in. Very mild evidence for an effect of genetic gain on basal diameter was observed (p = 0.057) and some evidence for a spacing effect on basal diameter was observed also (p = 0.032). No effect due to intensity of vegetation control was observed at this stage (Figure 4). Estimated Crown Width - 1st Meas. 2005 GGTIV 1.5 Average Crown Width (ft) 1.4 1.3 1.2 1.1 1 0.9 7x7 woods run 10x10 Spacing (ft) moderate 15x15 high Figure 5. Mean crown width for each genetic gain – spacing combination. Error bars represent +/- one standard error of the mean. Crown Width 11 The statistical model for crown width explained 99.3% of the total variation and exhibited a standard error of the estimate of 0.1122 ft. Again, strong evidence of an installation effect on crown width was observed (p < 0.0001). At Donkey Creek 2, crown widths averaged 1.47 ft, at Donaldson Creek crown width averaged 1.31 ft, and at Crane Creek the average crown width was 1.13 ft. Fairly strong evidence for an effect of genetic gain level on crown width was observed (p = 0.0077). It appears at this stage that unimproved stock has wider crowns than either moderate or elite gain levels. Mild evidence (p = 0.0505) for a spacing effect was observed (see Figure 5). DISCUSSION & CONCLUSIONS These preliminary results should be considered to be just that: PRELIMINARY. The conclusions are based on exactly half the number of observations that will eventually be available for analysis. Overall, and not unexpectedly, strong evidence for installation level effects on all response variables was observed (p < 0.0001 in all cases). The installation effect most certainly includes the differences caused by site quality (site index). Differences may be due also to minor variations in aspect, elevation, slope, soil types, as well as other local effects. Overall differences in amounts of local animal damage sustained (fences work most of the time, but may fail during significant storm events due to fallen trees, etc.) may have contributed to installation-wide differences, as well. Survival was marginally better at the narrowest spacing after two years (p = 0.0464). The interaction between gain level and spacing – high gain survived better at widest spacing, but woods run at narrowest – provides room to speculate whether it will continue through time. Height was seemingly affected by spacing (p = 0.0294) after two growing seasons, but the effect appears to be quite small at this stage. No differences in height due to genetic gain level were observed. Surprisingly, basal diameter appeared to be the largest for the woods run stock, though quite marginally so. Given that they started out with a larger caliper as shipped from the nursery, about 4.6 mm for the woods run compared to 4.4 mm for the elite, it may just be a carryover into the field until the seedlings become acclimated to the sites and the genetic advantage expected from the elite gain level truly begins to express itself. Crown width seemed strongly affected by gain level (p=0.0077), slightly by spacing (p=0.0505). Narrower crowns were observed in the elite gain level. It is interesting to speculate whether or not carbohydrates are allocated differently in the elite gain versus the woods run based on these results. Perhaps the elite gain level allocates relatively more to height growth than to crown expansion when compared to the unimproved stock, since their heights are the same, but basal diameter is smaller in the elite gain. Narrower crowns on elite gain seedlings along with similar heights as the woods run indicates less crown volume in the elite gain seedlings, which may in turn indicate more efficient use of carbohydrates for height growth, assuming equal foliage density. 12 Next year we will incorporate the second set of installations, i.e., those sites that were planted in 2006, which will enable us to analyze the complete set of six installations. The real questions to be answered, of course, are how the small differences observed at this stage develop over time. Abstracts and Publications John C. Tappeiner II, Douglas A. Maguire and Timothy B. Harrington. Silviculture and Ecology of Western U.S. Forests. 448 pages, B&W photographs, line drawings, references, index. ISBN 978-0-87071-187-9. Paperback, $35.00. Secure online ordering is available at http://oregonstate.edu/dept/press/s-t/Silviculture.html ABSTRACT: Once regarded mainly as the cultivation of forest trees, silviculture is today shifting to a broader focus, one that reflects society’s changing forest values. In addition to timber management, the practice and science of silviculture are now concerned with tending forests-to maintain forest health and reduce fire potential, benefit wildlife, and maintain aesthetics-and with ensuring options for future uses of the forest. Silviculture and Ecology of Western U.S. Forests follows the progression of silviculture as a science and looks closely at the value of forests. The only silviculture text to focus on the forests of the western U.S., primarily those in Oregon, Washington, and California, it is based on over 900 references as well as the authors’ extensive research and management experince. Yuzhen Li, Eric C. Turnblom, and David G. Briggs. Effects of density control and fertilization on growth and yield of young Douglas-fir plantations in the Pacific Northwest. Can. J. For. Res. 37(2): 449–461 (2007). ABSTRACT: To examine the effects of density control and fertilization on stand growth and yield of young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantations, seven treatment regimes were applied in sixty-three 9-year-old plots from nine installations across western Washington and Oregon. Fertilizer was applied at the rate of 220 kg N·ha–1 (as urea) at stand establishment and every 4 years thereafter. Results after 12 years showed that widely spaced stands exhibited significantly larger quadratic mean diameter than did narrowly spaced stands. The densest stands initially had the greatest overall stand basal area and volume, but accumulation rate in the dense stands had been declining with time. After 12 years, the less dense stands had met or exceeded the basal area periodic annual increment of dense stands. Across all densities, the periodic annual increments of quadratic mean diameter, basal area, and volume in fertilized plots were significantly greater than in unfertilized plots following the first and second urea applications. However, the first fertilization was insufficient to produce a significant increase in stand yield and the significant fertilization increases in yield were found following the second and the third urea applications. This study showed neither significant fertilization effect nor density effect on dominant height. In addition, no significant interactions were found for any stand growth and yield variables considered, but fertilization responses showed different trends among density treatments over time. 13 Upcoming Meetings and Events June 24-26, 2007, Meeting of the Western Forest Mensurationists, Lake Okanagan Resort, Kelowna, British Columbia. For more information please visit: www.westernforestry.org/wmens/ July 31-August 1, 2007, NWFSC Summer Meeting, Diamond Lake Ranger District, Umpqua national Forest. For more information visit: http://soilslab.cfr.washington.edu/nwfsc/ August 7-10, 2007, International Scientific Conference Forest Growth and Timber Quality: Crown Models and Simulation Methods for Sustainable Forest Management, Doubletree Hotel, Portland, OR. For more information please visit: www.westernforestry.org/ September 17-18, 2007, SMC Annual Fall Meeting, OSU Library, Willamette Room, Oregon State University, Corvallis OR., Lodging can be booked at the Salbasgeon Suites and Conference Center under the group code “Stand.” For more information visit the SMC Home Page: www.standmgt.org College of Forest Resources, University of Washington, Box 352100 Seattle, WA. 98195 14