Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Forests damaged by Katrina may contribute to global warming

Researchers led by biologist Jeffrey Chambers of Tulane University have determined that the losses inflicted by Hurricane Katrina on Gulf Coast forest trees are enough to cancel out a year’s worth of new tree biomass (trunks, branches and foliage) growth in other parts of the country.

“The carbon that will be released as these trees decompose is enough to cancel out an entire year’s worth of net gain by all U.S. forests. And this is only from a single storm,” says Chambers, lead author of an article detailing the team’s findings, “Hurricane Katrina’s Carbon Footprint on Gulf Coast Forests,” published in the Nov. 16 issue of the journal Science.

The study was carried out by researchers at Tulane and the University of New Hampshire. Using NASA satellite sensing technology, ecological field investigations and statistical analysis, the investigators estimate that 320 million large trees were killed or severely damaged by the August 2005 storm.

As the Earth’s climate warms, evidence is accumulating that hurricanes, tornados and frontal systems will gain in energy, producing more violent storms and stronger winds. Increased wind disturbance will cause more tree mortality and damage, and this dead wood will release additional carbon to the atmosphere, potentially amplifying global warming.

Young, healthy forests play a vital role in removing carbon, in the form of carbon dioxide, a greenhouse gas, from the atmosphere by photosynthesis, and are thus important in the battle against warming. These young forests are valued as “carbon sinks,” removing carbon dioxide from the atmosphere and storing it as growing vegetation.

The total amount of carbon stored in a forest is the result of the growth of new and existing trees, and tree death from age and disturbance. Dead trees and downed wood decompose and release carbon to the atmosphere. Thus, an increase in disturbance frequency, for example from more powerful storms, can tilt this balance toward the loss side, reversing the storing process and becoming a source of atmospheric carbon dioxide.

This increase in carbon emissions can enhance global warming in what is termed by scientists a “positive feedback mechanism.” Increased carbon dioxide warms the climate, causing more intense storms and elevated tree mortality, releasing yet more carbon dioxide and further warming the climate.

Arthur Nead | EurekAlert!
Further information:

More articles from Ecology, The Environment and Conservation:

nachricht Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide

nachricht Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Oasis of life in the ice-covered central Arctic

24.10.2016 | Earth Sciences

‘Farming’ bacteria to boost growth in the oceans

24.10.2016 | Life Sciences

Light-driven atomic rotations excite magnetic waves

24.10.2016 | Physics and Astronomy

More VideoLinks >>>