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

PORTLAND, Ore. May 8, 2009. Creating diverse forests for multiple uses is important to natural resource managers and landowners. A study conducted in southwestern Oregon provides forest managers with information that offers choices when managing land for a variety objectives that may include a high level of wood production, a moderate level of wood production with some wildlife habitat features, or low wood production that provides cover and forage for a wider variety of wildlife species.

"Land managers need effective approaches for creating and modifying forest stand structures to satisfy a broad range of objectives," explains Tim Harrington, a research forester at the Forest Service's Pacific Northwest Research Station. "Silvicultural treatments can be used to shift competitive interactions between conifers and hardwoods to create the desired balance between wood production and wildlife habitat."

Harrington and John Tappeiner, an emeritus Oregon State University forestry professor, initiated a study in 1983 in southwestern Oregon on Douglas-fir plantations near Cave Junction and Glendale, Oregon. During the first phase of the study, when the plantations were 1 or 2 years old, a single herbicide treatment was used to reduce hardwood density to several levels. The Douglas-fir were thinned at age 15 to leave densities of 120 to 220 dominant trees per acre.

About 8 years later (ages 23 to 25), the scientists found that:

  • Three very different stand structures emerged.

    1. Highly productive, pure stands of Douglas-fir, 39 to 52 feet tall, occurred where hardwoods were completely removed at age 2 years.
    2. Where 25 percent of the original hardwood density was retained, moderately productive stands developed with two distinct canopy layers: Douglas-fir (39 feet tall) growing above hardwoods (23 feet tall).
    3. Where the original hardwood density was retained, Douglas-fir and hardwoods occupy the same canopy layer, 26
      '/>"/>

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:2/10/2015)... 10, 2015  Alere Inc. (NYSE: ALR), a ... results for the quarter ended December 31, 2014. ... President of Alere said, "We made substantial progress ... the global leader in rapid diagnostics and delivering ... Health divestiture in early January enabled us to ...
(Date:2/5/2015)... TRIANGLE PARK, North Carolina , 5. ... sein 35. Jahr als spezialisiertes Logistikunternehmen und ... Position als einzige klinische Logistikfirma (Clinical Logistics ... Die Kernbotschaft der neuen Kampagne lautet ... und Lieferungen. Foto: http://photos.prnewswire.com/prnh/20150205/173753 ...
(Date:2/5/2015)... DIEGO , Jan. 26, 2015   Epic Sciences ... of cancer, today announced that Murali Prahalad , Ph.D., ... Personalized Medicine World Conference (PMWC) 2015: Silicon Valley, which ... Mountain View, Calif. on January 26-28, 2015. ... "CTCs Come of Age as Biomarkers." Last year, Epic Sciences ...
Breaking Biology News(10 mins):Alere Inc. Announces Fourth Quarter 2014 Results 2Alere Inc. Announces Fourth Quarter 2014 Results 3Alere Inc. Announces Fourth Quarter 2014 Results 4Alere Inc. Announces Fourth Quarter 2014 Results 5Alere Inc. Announces Fourth Quarter 2014 Results 6Alere Inc. Announces Fourth Quarter 2014 Results 7Alere Inc. Announces Fourth Quarter 2014 Results 8Alere Inc. Announces Fourth Quarter 2014 Results 9Alere Inc. Announces Fourth Quarter 2014 Results 10Alere Inc. Announces Fourth Quarter 2014 Results 11Alere Inc. Announces Fourth Quarter 2014 Results 12Alere Inc. Announces Fourth Quarter 2014 Results 13Alere Inc. Announces Fourth Quarter 2014 Results 14Alere Inc. Announces Fourth Quarter 2014 Results 15Alere Inc. Announces Fourth Quarter 2014 Results 16Alere Inc. Announces Fourth Quarter 2014 Results 17Alere Inc. Announces Fourth Quarter 2014 Results 18Alere Inc. Announces Fourth Quarter 2014 Results 19Alere Inc. Announces Fourth Quarter 2014 Results 20Alere Inc. Announces Fourth Quarter 2014 Results 21Alere Inc. Announces Fourth Quarter 2014 Results 22Alere Inc. Announces Fourth Quarter 2014 Results 23Alere Inc. Announces Fourth Quarter 2014 Results 24Alere Inc. Announces Fourth Quarter 2014 Results 25Alere Inc. Announces Fourth Quarter 2014 Results 26Alere Inc. Announces Fourth Quarter 2014 Results 27Alere Inc. Announces Fourth Quarter 2014 Results 28Alere Inc. Announces Fourth Quarter 2014 Results 29Alere Inc. Announces Fourth Quarter 2014 Results 30Alere Inc. Announces Fourth Quarter 2014 Results 31Alere Inc. Announces Fourth Quarter 2014 Results 32Alere Inc. Announces Fourth Quarter 2014 Results 33Alere Inc. Announces Fourth Quarter 2014 Results 34Alere Inc. Announces Fourth Quarter 2014 Results 35Alere Inc. Announces Fourth Quarter 2014 Results 36
... level of understanding of multiple sclerosis (MS) that may lead ... according to new research released today at Neuroscience 2013, the ... largest source of emerging news about brain science and health. ... by the body,s immune system attacking the nervous system. ...
... bioengineers at the University of California, San Diego have generated ... cells and individual neurons from the human brain. The ... confines genome amplification to fluid-filled wells with a volume of ... the journal Nature Biotechnology on November 10, 2013. ...
... November 10, 2013, Shenzhen, China - Coding variants in ... the overall genetic risk for psoriasis, according to a ... This conclusion is strongly supported by their investigation on ... 21,309 Chinese individuals. In such a large-scale investigation, researchers ...
Cached Biology News:Research reveals new understanding, warning signs, and potential treatments for multiple sclerosis 2Single-cell genome sequencing gets better 2Single-cell genome sequencing gets better 3The contribution of coding variants to psoriasis much smaller than thought 2
(Date:2/27/2015)... , Feb. 27, 2015  Pfenex Inc. (NYSE MKT: ... of biosimilar therapeutics, today announced that it will be ... Marquis on March 2 nd at 3pm PST. Patrick ... a panel discussing the current state of the biosimilar ... . For more information on CALBIO ...
(Date:2/26/2015)... Feb. 26, 2015 S&P Capital IQ (MHFI) ... Report coverage on MabVax Therapeutics Holdings Inc . ... clinical stage biotechnology company focused on the development of ... in the treatment of cancer. MabVax has discovered a ... protective immune responses generated by patients who have been ...
(Date:2/26/2015)... , Feb. 26, 2015   Regulus Therapeutics ... company leading the discovery and development of innovative medicines ... , Ph.D., President and Chief Executive Officer of Regulus, ... Company 35 th Annual Healthcare Conference on Wednesday, ... is being held at the Boston Marriott Copley Place.  ...
(Date:2/26/2015)... Feb. 26, 2015  NuGene International, Inc. ("NuGene") ... for skin and hair rejuvenation, has announced that ... of record for investor relations and strategic communications. ... distribution, sales and diversification strategies – and we ... prospective shareholders," stated Ali Kharazmi CEO of NuGene ...
Breaking Biology Technology:S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 2S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 3S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 4S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 5Regulus to Present at Cowen and Company 35th Annual Healthcare Conference 2Regulus to Present at Cowen and Company 35th Annual Healthcare Conference 3NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 2NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 3
... Thanks to continued generous support from mesothelioma victims, ... (PMC) announces the opening of its new state-of-the-art mesothelioma ... treatments for malignant pleural mesothelioma (MPM), a cancer of ... Pacific Meso Center (PMC) is a division of the ...
... of paint you put on the outside of your home ... the appliances and equipment on the inside. A team ... a major advance toward this vision by creating an inexpensive ... "We want to do something transformative, to move beyond current ...
... Neogen Corporation (NASDAQ: NEOG ) announces the ... Webcast When:  Thursday, December 22, 2011 @ 11:00 ... How:  Live over the Internet -- Simply log on ... Contact:  Terry Maynard of Neogen Corporation, +1-800-234-5333. If ...
Cached Biology Technology:First Free-Standing International Mesothelioma Research Laboratory Opens in Los Angeles 2Notre Dame researchers develop paint-on solar cells 2
... easy to supply microplates, deepwells, and tips ... convenience in mind, iLink incorporates multiple functions ... The iLink software is the key to ... that can be copied and installed as ...
No-Weigh Dithiothreitol (DTT) ,7.7 mg DTT/Tube x 48 tubes...
This kit is designed to select cells labeled with phycoerythrin- (PE-) conjugated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
... TUNEL-based assay kit provides complete components ... for convenient detection of DNA fragmentation ... The incorporation of BrdU in the ... or digoxigenylated methods. Results can be ...
Biology Products: