Navigation Links
Handful of heavyweight trees per acre are forest champs
Date:5/3/2012

Big trees three or more feet in diameter accounted for nearly half the biomass measured at a Yosemite National Park site, yet represented only one percent of the trees growing there.

This means just a few towering white fir, sugar pine and incense cedars per acre at the Yosemite site are disproportionately responsible for photosynthesis, converting carbon dioxide into plant tissue and sequestering that carbon in the forest, sometimes for centuries, according to James Lutz, a University of Washington research scientist in environmental and forest sciences. He's lead author of a paper on the largest quantitative study yet of the importance of big trees in temperate forests being published online May 2 on PLoS ONE.

"In a forest comprised of younger trees that are generally the same age, if you lose one percent of the trees, you lose one percent of the biomass," he said. "In a forest with large trees like the one we studied, if you lose one percent of the trees, you could lose half the biomass."

In 2009, scientists including Lutz reported that the density of large-diameter trees declined nearly 25 percent between the 1930s and 1990s in Yosemite National Park, even though the area was never logged. Scientists including co-author Andrew Larson of the University of Montana, also have found notable numbers of large trees dying in similar areas across the West.

Because of this, scientists have been keen to study a plot large enough to detect forest ecosystem changes involving large trees, including the effects of climate variability and change, possible culprits in the declines, Lutz said.

The new 63-acre study site in the western part of Yosemite National Park is one of the largest, fully-mapped plots in the world and the largest old-growth plot in North America. The tally of what's there, including the counting and tagging of 34,500 live trees, was done by citizen scientists, mainly undergraduate college students, led by Lutz, Larson, Ma
'/>"/>

Contact: Sandra Hines
shines@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Shade trees can protect coffee crops
2. Diversity of trees in Ecuadors Amazon rainforest defies simple explanation
3. Urban trees enhance water infiltration
4. Forest inventories in Oregon include more than trees
5. Forest inventories in California include more than trees
6. Flame retardants prove ineffective on fresh-cut Christmas trees
7. Flame retardants prove ineffective on fresh-cut Christmas trees
8. Trees wont stop tsunamis, scientists warn
9. Organic plant waste proves effective weed control for citrus trees
10. California study shows shade trees reduce summertime electricity use
11. Study finds hemlock trees dying rapidly, affecting forest carbon cycle
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Handful of heavyweight trees per acre are forest champs
(Date:12/22/2014)... Dec. 22, 2014 Research and Markets ... the "The Global Watermarking and Fingerprinting Markets" ... http://photos.prnewswire.com/prnh/20130307/600769 This insight ... watermarking and fingerprinting markets. Watermarking aims to control ...
(Date:12/19/2014)... , Dec. 18, 2014   LaunchKey , the ... the post-password and Internet of Things era, today announced ... The venture round was led by Metamorphic Ventures with ... Venture Partners, VegasTechFund, and others.  LaunchKey has raised $4 ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ) has ... Market 2015-2019" report to their offering. ... trend upcoming in this market is the increasing demand ... in recording of patient data for quick and correct ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... think they have solved an interesting problem: how to ... and complete vegetable protein. What,s more, they,ve joined forces ... soy snack they,ve developed into the hands of 1.2 ... the country has decidedly vegetarian tastes, the Indian people ...
... sensor that may revolutionize how drugs and medical devices are ... the survival of two species of threatened animals. To ... frog. In the wild, the African clawed frog produces ... its skin to protect it from infection. Princeton researchers have ...
... at Yale School of Medicine have found that new ... to Type 1 Gaucher disease, a rare genetic disorder ... resulting in liver/spleen enlargement, osteoporosis, bone pain, and increased ... new findings could lead to less expensive and more ...
Cached Biology News:Illinois scientists promote soy by currying favor with Indian taste buds 2New sensor derived from frogs may help fight bacteria and save wildlife 2New sensor derived from frogs may help fight bacteria and save wildlife 3Cheaper, more effective treatment of type 1 Gaucher disease possible 2
(Date:1/22/2015)... 22, 2015 Pipette.com has added the ... their comprehensive portfolio of Eppendorf products. , The Eppendorf ... a Centrifuge 5424/5424 R and receive the following:, ... Research plus or Eppendorf Reference 2 , ...
(Date:1/22/2015)... Selexis SA, a serial innovation company ... (RCBs) used for drug discovery to commercial manufacturing, announced ... Next-Generation Sequencing (NGS) data packages. The NGS ... by ensuring the integrity of the gene, validation of ...
(Date:1/22/2015)... , Jan. 22. 2015  Varian Medical Systems (NYSE: ... been honored for its commitment to sustainability with inclusion on ... is the highest ranked healthcare equipment company among the Corporate ... the World Economic Forum at Davos, Switzerland ...
(Date:12/24/2014)... 24, 2014  United Therapeutics Corporation (NASDAQ: UTHR ... MDT ) has submitted a pre-market approval application to ... use of Medtronic,s SynchroMed ® II implantable drug ... with United Therapeutics, Remodulin ® (treprostinil) Injection delivered ...
Breaking Biology Technology:Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2Varian Honored Among World's 100 Most Sustainable Corporations 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... Feb. 25 The International,Confocal Microscopy Working ... students, has been formed as a means ... reflective confocal microscopy (RCM) in,patient care., ... new members worldwide.,Dermatologists, dermascopists, dermatopathologists, medical students ...
... MONTVALE, N.J., Feb. 25 Barr Pharmaceuticals,Inc. ... its subsidiary, Duramed,Pharmaceuticals, Inc., has received notification ... has accepted for review its New Drug ... 0.10,mg/0.02 mg and ethinyl estradiol tablets 0.01 ...
... (OTC Bulletin Board: NILT.OB), a biopharmaceutical company focused ... announce the,appointment of Hsiao Dee Lieu, M.D., F.A.C.C. ... am delighted to welcome Dr. Lieu to Nile. ... should be immediately,beneficial to Nile and our CD-NP ...
Cached Biology Technology:International Confocal Microscopy Working Group Established to Advance Practice of Reflective Confocal Microscopy 2Duramed's Lo SEASONIQUE(R) NDA Accepted for Filing by FDA 2Duramed's Lo SEASONIQUE(R) NDA Accepted for Filing by FDA 3Duramed's Lo SEASONIQUE(R) NDA Accepted for Filing by FDA 4Hsiao Dee Lieu, M.D., F.A.C.C. Named VP of Clinical Research of Nile Therapeutics 2Hsiao Dee Lieu, M.D., F.A.C.C. Named VP of Clinical Research of Nile Therapeutics 3
...
... Immunogen: Synthetic peptide derived from ... rat mouse dog and orangutang occludin ... human occludin protein. Reactivity: Human ... Reactivity with rat mouse dog and ...
...
TRIzol Reagents are ready-to-use monophasic solutions of phenol and guanidine isothiocyanate suitable for isolating total RNA DNA and proteins (16)....
Biology Products: