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:4/23/2014)... a newly coined term for novels and films which focus ... of Copenhagen shows how these fictions serve as a mental ... climate change and imagine other living conditions. , "Global ... the atmosphere; it is also a cultural phenomenon in which ... the films we see. And there are so many of ...
(Date:4/23/2014)... at the University of Houston (UH) is working to ... His work is supported by a $1.8 million grant ... Blood transfusions save millions of lives every year. They ... for instance, routine surgeries would become life threatening. This ... that transfusions of red blood cells stored in a ...
(Date:4/22/2014)... There,s a new secret to get your child to behave ... , A new Cornell study published in Eating Behaviors ... they had to bite with their front teeth such as ... rowdier than when these foods had been cut. ... as aggressive toward other kids," said Brian Wansink, Professor and ...
Breaking Biology News(10 mins):Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3UH biomedical engineer works to make blood transfusions safer 2UH biomedical engineer works to make blood transfusions safer 3Biting vs. chewing 2
(Date:1/15/2014)... January 15, 2014 More than 5 ... about 1 in 3 seniors will die with Alzheimer’s ... These jaw-dropping figures have shocked many Americans into looking ... help prevent these tragic age-related cognitive disorders. Jonathan Weisman, ...
(Date:1/15/2014)... 2014 DTS Language Services, Inc . ... Portal for Life Science organizations who need document translations. ... matter of their documents in advance with a selection of ... of translations, often a critical factor in clinical and scientific ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of Notched Sound ... Patients listen to sound therapy that is tailor-made for ... to months, their tinnitus volume decreases. , AudioNotch has previously ... Notched White Noise. Now, AudioNotch is pleased to announce to ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
Breaking Biology Technology:Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2DTS Improves Efficiency for Life Science Document Translations 2Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2
Cached News: