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:7/24/2014)... out of York University shows a surprisingly effective way ... fungus: moose saliva (yes moose saliva). , Published ... inhibits a grassendophyte mutualism" shows that moose and reindeer ... a fungus called epichlo festucae that produces the toxin ... , "Plants have evolved defense mechanisms to protect themselves, ...
(Date:7/24/2014)... have similar counterparts in humans, affect the connections between ... into the hippocampus, an area of the brain that ... creation of memories. The results of the study have ... Brain function depends on the active communication between nerve ... woven together into a dense network where they constantly ...
(Date:7/24/2014)... funded by the New Jersey Recovery Fund and conducted ... Planning and Public Policy at Rutgers University has found ... about the likelihood of community-based rebuilding solutions. Of the ... they were "pessimistic" or "very pessimistic" that the parts ... rebuilt better than they were before the storm; another ...
Breaking Biology News(10 mins):Moose drool inhibits growth of toxic fungus: York U research 2A protein couple controls flow of information into the brain's memory center 2A protein couple controls flow of information into the brain's memory center 3A protein couple controls flow of information into the brain's memory center 4Rutgers study explores attitudes, preferences toward post-Sandy rebuilding 2
... molecular and protein signatures that predict rapid onset of ... transplant. The markers appeared soon after transplant and ... Such early detection of susceptibility to hepatitis C virus-induced ... treatment options after a transplant. Also, because the ...
... charcoal preserved in deeply buried sediments in Egypt,s Nile ... a huge drought 4,200 years ago associated with the ... the pyramid-building time. "Humans have a long history ... Bernhardt, a researcher with the U.S. Geological Survey. "Along ...
... NC Leukemia and lymphoma patients who receive life-saving ... side effects that significantly decrease quality of life, can ... In chronic Graft vs. Host Disease ... and the recipient,s body often cause these immune cells ...
Cached Biology News:Molecular and protein markers discovered for liver transplant failure from hepatitis C 2Molecular and protein markers discovered for liver transplant failure from hepatitis C 3Molecular and protein markers discovered for liver transplant failure from hepatitis C 4Climate and drought lessons from ancient Egypt 2B cell survival holds key to chronic graft vs. host disease 2
(Date:7/24/2014)... 24, 2014 Your cell phone ... modeling lithium-ion battery storage capacity. , New research ... theoretical model created at Lawrence Livermore National ... predicts how carbon components will perform as electrodes. ... the urgent need for higher-performance batteries. Several key ...
(Date:7/24/2014)... Three companies from the angelMD network were ... Competition. Out of 700 competition entrants, Chiron Health, Litesprite, ... round. In this round twenty teams are invited to ... mentoring from thought-leaders and medical entrepreneurs from all over ... commitment to the Livestrong vision around the Big C ...
(Date:7/24/2014)... , July 24, 2014 WIRB-Copernicus Group ... regulatory and ethical review services for clinical research, ... Formerly a division of Richmond, VA ... leading biosafety and biosecurity consulting firm in ... addition, WCG,s biosafety division – WCG Biosafety™ – ...
(Date:7/24/2014)... CA (PRWEB) July 24, 2014 ... http://www.draperuniversity.com , is proud to announce that for ... 17 different countries will converge on the Draper ... for an intensive, experiential program focused on entrepreneurship, ... highly selective school, currently running its sixth cohort, ...
Breaking Biology Technology:Getting More Life out of Lithium-ion Batteries 23 angelMD Startups Make Livestrong Big C Semi-finals 2WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 2WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 3Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 3
... United States Department of Energy will invest up to ... Centers, including $125 million for a center led by the ... cellulosic ethanol. , ,The Madison bioenergy research facility , ... Center, will operate in collaboration with Michigan State University ...
... In the age of digital everything, print still captures the ... of everything Internet. , ,There's no clearer example than ... when the company was no more than a brief ... on a windy afternoon and Eileen unwound a vision for ...
... Adelante, Atras!* (For a translation, scroll to the end). The ... buyers alike modifying their steps as the Internet changes everything. ... us have adopted at least some of these changes (both ... information, communicate, interact with each other, or buy and sell ...
Cached Biology Technology:UW-Madison to receive $125M for bioenergy research center 2UW-Madison to receive $125M for bioenergy research center 3Blurb shows that print still captures imaginations 2Blurb shows that print still captures imaginations 3Online retailing "tango" is adding some steps 2Online retailing "tango" is adding some steps 3Online retailing "tango" is adding some steps 4Online retailing "tango" is adding some steps 5Online retailing "tango" is adding some steps 6
... neurons in vesicles called synaptosomes. ... bouton. Synaptosomes may be centrifuged ... cellular debris. Abnormalites in neurotransmitter release ... condtions. Conditions of release may ...
... Detection Systems allow non-radioactive detection of ... systems, biotinylated lysine residues are incorporated ... the need for labeling with [35-S]methionine ... biotinylated lysine is added to the ...
... Series Hybridization chambers with forced convection ... ambient up to 99.9 C / 212 F ... and reproducible results DS controller Timer ... with an accuracy of a tenth of a ...
... microarray data using Asuragens bioinformatics expertise. We ... to extensive data analysis using the most ... in combination with the Gene Expression Profiling ... ,Normalization and basic statistical analysis including publication ...
Biology Products: