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:10/17/2014)... German . Why ... order to reproduce? And why are there two sexes anyway? ... issue of the research journal Molecular Human Reproduction ... from Bielefeld University Bielefeld has compiled this special issue on ... female to copulate with several males in quick succession – ...
(Date:10/16/2014)... have a new synthesis of recent research findings to ... in the two states. , The Ecology and ... Washington: A Synthesis of the Relevant Biophysical Science and ... published by the U.S. Forest Service,s Pacific Northwest Research ... managers for a synthesis of the large body of ...
(Date:10/16/2014)... 2014 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market ... Wocket™, the Smart Wallet, at the 13 th ... leading global conference on the intersection of technology and ... Anderson , founder and publisher of the Strategic News ...
Breaking Biology News(10 mins):Sperm wars 2New report synthesizes best available science on management of moist mixed-conifer forests 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
... racking your brain on a Monday morning to remember where ... those keys, you can thank the hippocampus, a brain region ... that room where your keys were hiding in an unusual ... Biological Studies have helped explain how the brain keeps track ...
... A dysfunction of a certain Calcium channel, the so called ... cause different motor diseases as well as a special type ... Dr. Melanie Mark and Prof. Dr. Stefan Herlitze from the ... of the P/Q-type in the modulatory input neurons of the ...
... compared water quality trends in forested streams across the country ... changes. The study, which draws on decades, worth of ... Rico, underscores the value of long-term data in understanding the ... rivers. It is published in the current issue of the ...
Cached Biology News:The neuroscience of finding your lost keys 2The neuroscience of finding your lost keys 3Dysfunction in cerebellar Calcium channel causes motor disorders and epilepsy 2Study explores long-term water quality trends in near-pristine streams 2
(Date:10/22/2014)... October 22, 2014 Grace Century, a ... healthcare projects, announces the addition of Dr. Yousef ... its advisory team. Dr. Siddiqui will provide further healthcare ... A graduate of University College Medical School ... in medicine in 2001. With further certification as a ...
(Date:10/22/2014)...   Synthetic Biologics, Inc. (NYSE MKT: SYN), ... infections and diseases, announced today that the U.S. Patent ... for a composition of matter patent application that covers ... SYN-004. This is Synthetic Biologics, first allowed patent application ... to the Company,s extensive C. difficile patent ...
(Date:10/22/2014)... 22, 2014 Research and Markets  has ... by Material, by Application, Geography - Global Analysis and ... Organic electronics, also called as polymer ... science which deals with small conductive molecules and electrically ... molecules and polymers are carbon based, made using synthetic ...
(Date:10/20/2014)... 2014 Mapp Biopharmaceutical,s valiant effort to ... to fight the Ebola outbreak will make the ... production of pharmaceuticals can be, according to Kalorama ... while some may be taken aback by the ... industry knowledge are well aware of the complex ...
Breaking Biology Technology:Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3
... on powerful computational tools and a state-of-the-art scanning ... Wisconsin-Madison and Iowa State University materials science and ... structure in solid metallic materials known as metallic ... Physical Review Letters , the findings fill ...
... May 11, 2012   Synthetic Biologics, Inc. (NYSE Amex: ... and innovative disease-modifying medicines for serious illnesses, announced today ... Board, it has split the roles of Chairman and ... serve as its independent, non-executive Chairman of the Board. ...
... ORLANDO, Fla., May 10, 2012   GeneLink, Inc. ... leading consumer genomics biotech company, reports financial results for the ... Results: , The Company reached an agreement ... Life Sciences, Inc. to Capsalus Corp (OTCBB:WELL.OB, or "Capsalus"). Capsalus ...
Cached Biology Technology:In metallic glasses, researchers find a few new atomic structures 2In metallic glasses, researchers find a few new atomic structures 3Synthetic Biologics Appoints Jeffrey J. Kraws as Independent Chairman 2Synthetic Biologics Appoints Jeffrey J. Kraws as Independent Chairman 3GeneLink Reports 2011 Financial Results 2GeneLink Reports 2011 Financial Results 3
... CultureWell cell culture systems provide an ... for staining and imaging. Each system ... standard optical-quality coverslips in cell culture ... sterile and ready to use. Individual ...
RECOMBINANT EQUINE IL-4 Product Type: Recombinant Protein...
RECOMBINANT EQUINE TNF ALPHA Product Type: Recombinant Protein...
Request Info...
Biology Products: