HOME >> BIOLOGY >> NEWS
Scientists re-evaluating the meaning of 'desertification,' Duke ecologist says

rent factors causing desertification, Reynolds said. Another major factor is climate, especially drought. Critics add that not all changes have an immediate or direct impact on humans, and that how much each factor contributes to dry land deterioration is not clear.

"Over a hundred definitions of desertification have been proposed, each emphasizing unique issues," he added. "Desertification is complex because there are different factors involved. You can't look at any one thing by itself."

His book notes that a temporary loss of vegetation cover due to short term drought is "distinct from, and not necessarily related to" severe soil degradation and permanent vegetation loss that can result from longer lasting and more severe disturbances.

Written by 45 different authors, the book is the product of an international conference co-organized by Reynolds and Stafford Smith at the Free University of Berlin. Located in a part of Germany's capital known as Dahlem, the workshop brought together scientists from a diverse range of disciplines.

The authors accept the United Nations' view that desertification results from various factors, including natural and human activities. Their book, however, goes further than the U.N. by stressing that humans and natural impacts are always coupled.

"There are always human and environmental drivers," Reynolds asserted in his interview. "If you don't consider the human dimensions and the biophysical dimensions simultaneously, you're going to miss the boat."

Reynolds described a hypothetical dry land ranching family that starts out owning a modest-sized herd of cattle grazing in an area with good soil and grass cover. If a drought suddenly sets in, grass output may decrease enough to force that family to sell some cattle in order to pay its bills. If cattle prices then drop, the family goes further into debt.

If the drought becomes prolonged, or family members encounter additional an
'"/>

Contact: Monte Basgall
monte.basgall@duke.edu
919-681-8057
Duke University
6-Mar-2003


Page: 1 2 3 4

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
(Date:11/18/2014)... Nov. 17, 2014   News ... collaborate to develop The Partners Data Lake, an ... Partners Data Lake will allow researcher and clinicians ... treatment and the lives of patients , ... clinical activities across the Partners system, breaking down ...
(Date:11/18/2014)... NEW YORK , Nov. 18, 2014 /PRNewswire/ ... iris-based identity authentication solutions, and MorphoTrust USA ... solutions and services, today announced a strategic partnership ... across enterprise, motor vehicle administration (MVA), airport screening ... leader in identity-related solutions, MorphoTrust serves consumers through ...
(Date:11/12/2014)... 2014 Crossmatch™, a leading provider of biometric ... fingerprint readers have been deployed throughout Montparnasse Pasteleria, ... Mexico . The bakery chain implemented the Crossmatch ... caused by employees clocking in for each other. ... Montparnasse relied on paper timecards and a mechanical time ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
(Date:11/18/2014)... 17, 2014 Athena Signature Series: Turning Cancer ... Beverly Emerson, a professor in the Regulatory Biology Laboratory at ... recent discovery points to an “off switch” for drug resistance ... how her local research is making a global impact in ... and then join host Cheryl K. Goodman, CEO of Social ...
(Date:11/18/2014)... Array Architects is proud of a ... the nation's hospitals and health systems. It is a ... their careers to the advancement of both the healthcare ... respective field, Laura Silvoy has been chosen to share ... Simulation Conference. , Laura will present her Process ...
(Date:11/17/2014)... November 17, 2014 The new ... Weights " describes the challenges of becoming the ... accredited status for calibration weights in the microgram ... weight manufacturers and any scientists involved in nanotechnology ... design, handling, manufacturing and calibration of weights in ...
(Date:11/15/2014)... New York, NY (PRWEB) November 14, 2014 ... expansion plan, QuickSTAT is making significant investments in ... evolving world of modern cold chain and the ... will support QuickSTAT’s ongoing focus on customized logistics ... Towers and enhancement of existing facilities. There will ...
Breaking Biology Technology:Array Healthcare Simulation Expert Slated to Speak at Winter Simulation Conference 2New White Paper on Microgram Weights Describes How to Achieve Traceable Measurement Down to 0.05 Milligrams 2QuickSTAT Announces Global Expansion Plan to Enhance Its Global Network and Cold Chain Logistics Capabilities for Life Sciences 2
Cached News: