HOME >> BIOLOGY >> NEWS
A chilling solution: Measuring below-ground carbon without destroying trees

USDA Forest Service (FS) researchers have provided the first proof of concept for a method that allows scientists to study below-ground carbon allocation in trees without destroying them. In the latest issue of the journal Plant, Cell & Environment, Kurt Johnsen and fellow researchers at the FS Southern Research Station unit in Research Triangle Park, NC, describe a reversible, non-destructive chilling method that stops the movement of carbon into root systems.

The photosynthetic process of plants has been estimated to account for almost half of the carbon circulating in the Earth's systems. Reliable data has been developed on carbon cycling in the above-ground processes of trees, but how much carbon is actually moved and stored below the ground has still not been determined. Most methods to study below-ground processes involve destroying the roots as well as the mycorrhizal communities that live symbiotically with root systems.

"Below-ground carbon allocation is one of the least understood processes in tree physiology," says Johnsen. "Being able to accurately measure it is essential for modeling forest and ecosystem productivity and carbon sequestration, but most methods disturb the root-mycorrhizal continuum that plays an essential role in nutrient transport."

One method of estimating below-ground carbon allocation involves girdling the tree, cutting through the phloem to stop the movement of carbon into roots. This method leaves the root-mycorrhizal continuum intact, but still destroys the tree. Johnsen and his fellow researchers decided to try chilling the phloem to temporarily interrupt carbon movement and leave the tree alive. Though the technique has been used on herbaceous plants in controlled environments, Johnsen's experiment represents the first test of the method on trees and, in particular, on large trees in the field.

The researchers chilled the phloem of 10 loblolly pine trees in a stand that receives annual
'"/>

Contact: Kurt Johnsen
kjohnsen@fs.fed.us
919-549-4270
Southern Research Station - USDA Forest Service
5-Dec-2006


Page: 1 2

Related biology news :

1. Climate scientists to discuss the chilling consequences of nuclear war
2. Measuring nectar from eucalypts
3. Measuring the unseeable: Penn researchers probe proteins dark energy
4. Measuring plant diversity, predicting vulnerability to invasive species
5. Measuring hidden parasites in falciparum malaria
6. New study warns limited carbon market puts 20 percent of tropical forest at risk
7. Experiment suggests limitations to carbon dioxide tree banking
8. Decoding mushrooms secrets could combat carbon, find better biofuels and safer soils
9. Scientists close in on missing carbon sink
10. Human activities increasing carbon sequestration in forests
11. Researchers examine carbon capture and storage to combat global warming

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/21/2020)... ... 20, 2020 , ... NDA Partners Chairman Carl Peck, ... with expertise in clinical trial planning and feasibility, regulatory inspection readiness, and clinical ... his career, Mr. Movahhed has helped design and manage oncology, neurology, cardiovascular, and ...
(Date:8/12/2020)... (PRWEB) , ... August 12, 2020 , ... ... and monitoring systems that are ideal for public health agencies of all sizes. ... contagious diseases and helping at-risk individuals find appropriate health care, Mosio helps public ...
(Date:8/7/2020)... ... August 06, 2020 , ... ... the prestigious National STEM Scholar Program, a unique professional development program that provides ... support for middle school science teachers nationwide. , Created in partnership between the ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is now ... With 50 million stem cells total, patients may choose which extremities they would like ... arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is obtained ...
(Date:7/31/2020)... ... 2020 , ... Anomet Products has introduced new custom composite ... with CRM, neurostimulation, vascular, and related devices. , Anomet Medical Clad Wire ... and cost criteria; especially where solid wire is limited. Typical configurations for implantable ...
(Date:7/31/2020)... ... July 29, 2020 , ... The SDX® ... in 16 countries, has reached its 20th anniversary of worldwide use. Introduced in ... at top universities including University of Pennsylvania, University of Michigan, University of Maryland, ...
(Date:7/18/2020)... ... July 16, 2020 , ... After research model surgery and catheter implantation, ... surgery is only the beginning of a successful study, while protecting and accessing the ... Gien, Global Head of Surgery from Envigo in a live webinar ...
Breaking Biology Technology:
Cached News: