Navigation Links
Forest model predicts canopy competition
Date:2/20/2014

e canopy was filling in a bare spot. The forest wasn't storing that much more carbon; taller trees were growing a few meters to the side and creating exaggerated appearances of vertical growth in the overhead images.

Turning that realization into a predictive mathematical model is not a simple matter. Working with co-author Gregory P. Asner at the Carnegie Institution for Science in Stanford, Calif., Kellner created the model, which provides a probabilistic accounting of whether the height change in a pixel is likely to be the normal growth of the incumbent tree, a takeover by a neighboring tree, or another branch of the incumbent tree.

Tracking treetops

The model doesn't just work for this forest but potentially for different kinds of forests, Kellner said, because its interpretation of the data is guided by the data itself. The model uses what seems to be the forest's normal rate of growth to determine when evidence of vertical growth is more than plausible and therefore a possible signal of lateral overtopping.

"While we can all agree that a 20-meter increase over two years is definitely not vertical growth, where you put the boundary, is a necessarily subjective decision," Kellner said. "The neat thing about the analytical framework is you have the data choosing for you. The data arbitrate when a given height change is judged to be vertical rather than lateral, and that is based on the unique neighborhood around that position and what we've observed in the rest of the data."

So even in an area where growth is quite uniform, the model can still predict whether a height change is due to growth or a takeover. Accounting for several neighborhoods, including some with more variance, can delineate trends such as how close trees have to be before one could overtop another.

Using the model, Kellner and Asner gained a number of insights beyond the huge incumbency advantage. They found that a tree's height was
'/>"/>

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New data shows continued decline of African forest elephants
2. Biodiversity in production forests can be improved without large costs
3. Forest emissions, wildfires explain why ancient Earth was so hot
4. NYBG launches Amazon Forest Program to help conserve Earths largest intact forest
5. Forests in Central America paying the price of drug trafficking shift
6. Forests as Capital: International Society of Tropical Foresters Annual Conference in New Haven
7. Effective control of invasive weeds can help attempts at reforestation in Panama
8. Rainforests in Far East shaped by humans for the last 11,000 years
9. Increase in hemlock forest offsetting effect of invasive hemlock woolly adelgid for now
10. Salamanders help predict health of forest ecosystems and inform forest management
11. World Congress on Agroforestry 2014
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Forest model predicts canopy competition
(Date:7/11/2014)... TRAP" to capture the early signs of kidney failure, ... Journal of Clinical Investigation . Their new transgenic ... cellular and genetic information from a variety of solid ... for Medical Research in 2008, TRAP involves attaching a ... the cell type of interest. Scientists can then collect ...
(Date:7/11/2014)... China Researchers from Salk Institute for Biological Studies, ... evaluated the safety and reliability of the existing ... new method, TALEN-HDAdV, which could significantly increased gene-correction ... This study published online in Cell Stell ... stem cell-based gene therapy. , The combination of ...
(Date:7/11/2014)... explored two different ways that allow unprecedented experimental ... formation of oxygen molecules in photosynthesis. The two ... Nature Communications . , "The new knowledge ... water oxidation, which are key components for building ... solar energy in fuels like hydrogen, ethanol or ...
Breaking Biology News(10 mins):A new genome editing method brings the possibility of gene therapies closer to reality 2Molecular snapshots of oxygen formation in photosynthesis 2
... to an Asian bark fungus accidentally introduced to the United ... was highly valued for its strong, workable lumber and a ... upon the chestnut for food. Ongoing efforts to reintroduce ... because they rely on genetic cross breeding to produce ...
... the United States have collaborated to complete the first ... called miscanthus. The results published in the current ... provide a significant breakthrough towards advancing the ... the long-term collaboration between energy crop company Ceres, Inc., ...
... line defence of the brain and are constantly looking ... uncontrolled inflammation within the brain, which can in turn ... Central,s open access journal Journal of Neuroinflammation ... production of pro-inflammatory cytokines and inflammatory enzymes in activated ...
Cached Biology News:UC research tests new tool to guide reintroduction of the American chestnut 2UC research tests new tool to guide reintroduction of the American chestnut 3First complete full genetic map of promising energy crop 2First complete full genetic map of promising energy crop 3The Japanese traditional therapy, honokiol, blocks key protein in inflammatory brain damage 2
(Date:7/10/2014)... 10, 2014 OMICS Group’s 5th International ... 18-20 August, 2014 at Double Tree by Hilton Beijing, ... developments in Analytical & Bioanalytical research methods only to ... on this occasion, Dr. Srinubabu Gedela, MD of OMICS ... is a remarkable one in bringing a unique and ...
(Date:7/10/2014)... CA (PRWEB) July 10, 2014 Senior ... institutions and professional associations, addressed the challenges of “Reducing ... Medical Device Industries” through strategic sourcing. Describing the partnership ... with the Supply Chain Management Institute ( SCMI) ... event on June 24 at the Kroc Institute of ...
(Date:7/10/2014)... July 10, 2014 On July ... Medvedev , presented Russia,s first ... . The Company is developing a unique project called ... BIOCAD develops a number of innovative drugs based on ... The ceremony took place at the International Exhibition "Innoprom ...
(Date:7/10/2014)... 2014 /PRNewswire-iReach/ -- Tute Genomics, the leader ... an agreement with Lineagen, Inc., to provide ... Dx PLUS.  Lineagen, focused on the ... currently offers FirstStep Dx PLUS, a ... by healthcare providers as a first-line genetic ...
Breaking Biology Technology:A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 3Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 4
... The long-awaited speaking faculty for the September Pharma ... the conference website reports Mark Alexay, President of ... is comprised of 100 speakers from pharmaceutical companies ... in the pipeline. The speaker list may be ...
... of Avastin Will Take Market Share Away from ... New Report from Decision ResourcesWALTHAM, Mass., March 10 ... research and advisory firms for pharmaceutical and healthcare ... in the age-related macular degeneration (AMD) market through ...
... March 10 Christine Lawless, MD, has ... an ACCME-accredited provider of continuing medical education (CME), beginning ... leading authorities in sports medicine cardiology, Dr. Lawless recently ... University Medical Center, where she was Associate Professor ...
Cached Biology Technology:Pharma ChemOutsourcing Unveils 100 Pharma & Biotech Speaker Faculty for 2009 Conference September 14-16 in Long Branch, NJ 2Robust Annual Growth Through 2012 in the Age-Related Macular Degeneration Market Will Be Driven by Expanding Use of Lucentis in Europe 2Robust Annual Growth Through 2012 in the Age-Related Macular Degeneration Market Will Be Driven by Expanding Use of Lucentis in Europe 3Former President of Sports Cardiology Consultants, LLC Christine Lawless, MD, MBA, ABCL, FACC, FACSM, Named Medical Director of CME Enterprise 2
IMAGEQUANT 100 IQTL, 1 EA. Category: ImageQuant CCD Imagers....
Request Info...
RayBio Human Cytokine Antibody Array 1.1 (4 array membranes) with Accessory, detects 20 cytokines (for lysate) Class: Antibody Array Products Product Group: Antibody Array...
...
Biology Products: