Navigation Links
Managing Douglas-fir forests for diversity
Date:5/8/2009

to 30 feet tall, in mixed stands that are low in productivity but may have the potential to provide cover and forage for a range of wildlife species.

  • Each of the stand structures had different potentials for habitat and for wood production.
  • Douglas-fir stand volume where all hardwoods were removed was about three times that where hardwoods were not removed, and these stands may provide wildlife cover for shade in summer and warmth in the winter.
  • The stands with hardwoods will provide hardwood seeds for wildlife food, and birds can use hardwood layers in the understory for nesting and foraging.
  • Douglas-fir mortality from black stain root disease was greater where all hardwoods were removed than where some hardwoods were retained. The disease is known to be spread during precommercial thinning operations because the fresh slash from thinning is colonized by insects, which carry the disease.
  • It is unknown how long these stand structures will persist given future competitive interactions; however, differences in Douglas-fir yield among the three stand structures are likely to remain stable or even increase as the taller-growing species continues to exert its dominance.

    "Managing stands with moderate hardwood densities enables a stratified structure to develop with conifers and hardwoods occupying dominant and intermediate canopy layers, respectively," explains Harrington. "Combining high hardwood densities with precommercial thinning of Douglas-fir creates a codominant stand structure with conifers and hardwoods occupying the same canopy layer. Managers may also want to retain some hardwoods in areas prone to black stain root disease, since the hardwoods may reduce mortality of planted Douglas-fir following thinning."


    '/>"/>


  • Contact: Sherri Richardson Dodge
    srichardsondodge@fs.fed.us
    503-808-2137
    USDA Forest Service, Pacific Northwest Research Station
    Source:Eurekalert

    Page: 1 2

    Related biology news :

    1. Managing nuclear wastes for the millennia
    2. Managing uncertainty important in ecological balance: ASU researcher
    3. Research leading to tools for managing bovine respiratory disease complex
    4. Army can boost mission success by better managing
    5. Managing carbon loss
    6. New genes present drug targets for managing cholesterol and glucose levels
    7. Genes from tiny algae shed light on big role managing carbon in worlds oceans
    8. Emphasis on conifer forests places multiple species at risk
    9. Conservation International and Toyota partner to protect Philippines rain forests
    10. Peat and forests save permafrost from melting
    11. Spatial patterns in tropical forests can help to understand their high biodiversity
    Post Your Comments:
    *Name:
    *Comment:
    *Email:
    (Date:3/10/2015)...   Tute Genomics , pioneer in affordable, accurate ... sequencing company PrimBio Research Institute to be ... panel interpretation. PrimBio, a certified Life Technologies ... technologies to support the work of experts on the ... types of exome sequencing services: 1) Targeted Exome and ...
    (Date:3/4/2015)... , Mar. 04, 2015 Research and Markets ... addition of the "Global Biometrics Market Forecast ... The market for biometric authentication systems ... around 14% till 2020 The driving ... increasing security needs, government projects and constant development ...
    (Date:3/2/2015)... HUNTSVILLE, Ala. , March 2, 2015 /PRNewswire/ ... transaction processing. Data protection company Tharon Rankins Enterprises ... product that provides an ultra-safe way for businesses ... as their financial transactions. Beconux ... by Tharon Rankins Enterprises. Functioning similarly to an ...
    Breaking Biology News(10 mins):PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 2PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 3Global Biometrics Market Forecast and Opportunities, 2020 2Global Biometrics Market Forecast and Opportunities, 2020 3Personal Data Protection Company Launches New Product 2
    ... PASADENA, Calif.A California Institute of Technology (Caltech)-led ... first proof that a targeted nanoparticleused as an ... bloodstreamcan traffic into tumors, deliver double-stranded small interfering ... gene using a mechanism known as RNA interference ...
    ... A potential new energy source so controversial that people once ... by the mainstream scientific community. That,s the conclusion of the ... topic "cold fusion" being held here for the ... National Meeting of the American Chemical Society (ACS). "Years ...
    ... , , Michael M. Graham, Ph.D., M.D., president, ... chair, SNM Medical Isotope Task Force, Jeffrey P. Norenberg, ... member, SNM Medical Isotope Task Force, WHEN:,Immediately ... over a two-week period when cancer, heart and brain ...
    Cached Biology News:Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles 2Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles 3Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles 4'Cold fusion' moves closer to mainstream acceptance 2'Cold fusion' moves closer to mainstream acceptance 3'Cold fusion' moves closer to mainstream acceptance 4
    (Date:3/30/2015)... CASI Pharmaceuticals, Inc. (Nasdaq: CASI ), ... commercialization of innovative therapeutics addressing cancer and other unmet ... focus on China , announced today ... approved the Company,s application to conduct a Phase 2 ... patients for its proprietary drug candidate ENMD-2076.  ...
    (Date:3/30/2015)... Washington, USA (PRWEB) March 29, 2015 ... and the United States and plenary talks by four ... SPIE Optics + Optoelectronics next month in ... technical presentations in 17 conferences alongside a two-day exhibition. ... and photonics , the event will run 13-16 April ...
    (Date:3/30/2015)... MADISON, Wis. , March 30, 2015  FUJIFILM ... ("Fujifilm") and Cellular Dynamics International, Inc. (CEO: Robert ... leading developer and manufacturer of fully functioning human cells ... the two companies have entered into a definitive agreement ... offer to be followed by a second step merger. ...
    (Date:3/29/2015)... As a symbol of its commitment ... pharmaceutical manufacturing clients, Whitehouse Laboratories is excited to announce ... Race Team for the 2015 race season. Success on ... a strong sense of precision and attention to detail. ... in the quality control testing laboratory. Sponsorship of the ...
    Breaking Biology Technology:CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 2CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 3CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 4CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 5Laser Energy Advances Among Reports Set for SPIE Optics + Optoelectronics 2Laser Energy Advances Among Reports Set for SPIE Optics + Optoelectronics 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 2Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 4Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 5Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 6Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 7Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 8Whitehouse Laboratories Reaffirms Commitment to Speedy Results – Renews Sponsorship of Berkenstock Racing Team 2
    ... XI,AN, China, May 15 /Xinhua-PRNewswire-FirstCall/ -- Huifeng ... a leading,developer and producer of plant extracts ... nutraceutical and food production, today,announced that there ... as a result,of the Sichuan Earthquake., ...
    ... 15 Derma Sciences, Inc.,(OTC Bulletin Board: DSCI), a ... first quarter ended March 31, 2008. For the,quarter, sales ... sales,from the newly acquired First Aid Division. The Company ... higher than expected,integration costs associated with its First Aid ...
    ... 15 Debiopharm Group,(Debiopharm), a global ... medical conditions and particularly oncology, announced,the ... its long-term European,pharmaceutical partner, for the ... releasing hormone (GnRH) agonist analogue,effective in ...
    Cached Biology Technology:Huifeng Bio-Pharmaceutical (HFGB) Announces No Earthquake Related Damage to Facilities 2Derma Sciences Reports First Quarter 2008 Results 2Derma Sciences Reports First Quarter 2008 Results 3Derma Sciences Reports First Quarter 2008 Results 4Derma Sciences Reports First Quarter 2008 Results 5Debiopharm Signs License Agreement for Marketing of Salvacyl(R)/Moapar(R) 3-Month in Treatment of Sexual Deviations 2