Navigation Links
Tropical Atlantic cooling and African deforestation correlate to drought, report scientists

nalyzed data from four lakes that are distributed across central Africa on the monsoon belt. The three sea surface cooling periods found by the scientists correlate to records of low lake levels. These clearly were times of drought; the land became more arid.

The authors state, "periods of drought likely brought about environmental hardship, triggering population migration, giving rise to changes in the modes of agricultural production, and influencing the fall or rise of civilizations."

Weldeab points out that the past 50 years are marked by deforestation and overgrazing much greater than that of the past, thus disturbing the climate system that results from the coupling of sea surface temperature and vegetation cover on land.

"We can't predict how, but it is clear that this human-induced change will change the terrestrial and ocean system," he says. He notes that droughts in this region are currently occurring more frequently than in the past few thousand years, although the frequency of the droughts is unpredictable.

"People in less developed countries live from rain, harvests and animal husbandry," says Weldeab. "Drought directly affects them; they run out of food for people and animals."


'"/>

Source:University of California - Santa Barbara


Page: 1 2

Related biology news :

1. Finding Cures For Tropical Diseases: Is Open Source An Answer?
2. Tropical Deforestation affects rainfall in the U.S. and around the globe
3. Tropical dry forests receive international recognition
4. Tropical forest CO2 emissions tied to nutrient increases
5. Tropical forests -- Earths air conditioner
6. FSU scientist warns North Atlantic right whale facing extinction
7. Ancient trans-Atlantic swarm brought locusts to the New World
8. Microbes hitchhike across Atlantic on desert dust
9. How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles
10. Brazil creates buffer zone around coral reefs off Atlantic coast
11. A dichotomy in migration patterns found for sea turtles in east Atlantic
Post Your Comments:
(Date:8/19/2014)... release is available in German . ... inherently intermittent energy sources. If a large amount of electricity ... future, excess energy will have to be stored during productive ... existing storage capacities are far from adequate for the purpose. ... One important focus lies on battery systems that used to ...
(Date:8/19/2014)... It,s not a monkey. It,s not a lemur. It,s not ... the Philippine tarsier: a tiny, adorable and downright "cool" primate ... that Americans are familiar with," said Rafe Brown, curator-in-charge at ... eyes and ears; an extremely cute, furry body; a long ... expanded fingers and toe tips that look a bit like ...
(Date:8/19/2014)... purchased at retail seafood counters in 10 different ... expose consumers to unexpectedly high levels of mercury, ... present a fish of the same species, but ... mislabeling offense, according to new research by University ... of seafood is essential to allow consumers to ...
Breaking Biology News(10 mins):Asian inventions dominate energy storage systems 2Asian inventions dominate energy storage systems 3Philippine tarsier gets boost from Kansas research, and genetic proof of a new variety 2Philippine tarsier gets boost from Kansas research, and genetic proof of a new variety 3Seafood substitutions can expose consumers to unexpectedly high mercury 2Seafood substitutions can expose consumers to unexpectedly high mercury 3
... FL (May 21, 2010).The University of Miami (UM) has ... the Howard Hughes Medical Institute (HHMI) to strengthen the ... and Sciences, where the program resides, will use the ... from groups traditionally underrepresented in the sciences to pursue ...
... at the University of Oxford and Royal Holloway University of London ... Bt works best if applied to young plants and ... is published today (20 May) in the open-access journal PLoS ... Bacillus thuringiensis is a common method for controlling a ...
... -- At a recent Specialty Coffee Association of America ... to increase the overall quality and availability of specialty ... new effort, called the Global Coffee Quality Research Initiative ... coffee roasters and agricultural researchers in partnership with the ...
Cached Biology News:UM receives 5th consecutive Howard Hughes Medical Institute grant for science education 2Study uncovers optimal ecology of bioinsecticide 2New global coffee research initiative announced 2New global coffee research initiative announced 3
(Date:8/20/2014)... could improve the health of your heart, researchers have ... used a standard TENS machine like those designed to ... tragus, the small raised flap at the front of ... , The stimulation changed the influence of the nervous ... that can drive failing hearts too hard. , Professor ...
(Date:8/19/2014)... Md. (PRWEB) August 19, 2014 ... liquid chromatography systems, Prominence-i and Nexera-i, adding to ... systems. Combining excellent functionality, an intuitive operating environment, ... and a more efficient workflow for conventional to ... feature innovative, intuitive and intelligent design so users ...
(Date:8/19/2014)... 2014 Research and Markets  has announced the ... Global Strategic Business Report" report to their offering. ... Oxide Fuel Cells (SOFCs) in US$ Thousands. The report provides ... , Europe , Asia-Pacific ... provided for the period 2012 through 2020. Market data and ...
(Date:8/19/2014)... , Aug. 19, 2014 CSSi, the leader ... recently announced the formation of the company,s Medical and ... the addition of Dr. William E. Gannon, Jr. ... http://photos.prnewswire.com/prnh/20140818/136957 The MCAB, with Dr. ... of therapeutic areas and set strategic goals for the ...
Breaking Biology Technology:'Tickling' your ear could be good for your heart 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 3Global Solid Oxide Fuel Cells (SOFCs) - Strategic Business Report 2014 2CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 2CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 3
... Aug. 24, 2011 United Therapeutics Corporation (NASDAQ: ... of its FREEDOM-C(2) Phase 3 trial of treprostinil ... formulation of treprostinil, a stable synthetic form of ...  Preliminary analysis demonstrates that the trial did not ...
... Lake, N.Y. New research from the Trudeau Institute ... (LAIV), commonly known as FluMist, elicits protection. The ... Vaccine . The journal article is entitled "Live attenuated ... and was authored by Trudeau Institute scientist Dr. Laura ...
... Mich.---A delicate balance of atomic forces can be exploited ... attribute that,s important for many nanotech applications but hard ... The same type of forces are at work bringing ... supercluster structures in this research are in many ways ...
Cached Biology Technology:FREEDOM-C(2) Trial of Oral Treprostinil in Pulmonary Arterial Hypertension Does Not Meet Primary Endpoint 2FREEDOM-C(2) Trial of Oral Treprostinil in Pulmonary Arterial Hypertension Does Not Meet Primary Endpoint 3FREEDOM-C(2) Trial of Oral Treprostinil in Pulmonary Arterial Hypertension Does Not Meet Primary Endpoint 4Trudeau Institute announces a discovery in how FluMist elicits protection 2Engineers discover nanoscale balancing act that mirrors forces at work in living systems 2
... DNA Engine Opticon 2 real-time PCR detection ... for fluorescence excitation (470-505 nm) and two ... 540-700 nm). The Opticon 2 system is ... which includes a thermal gradient feature. This ...
Fingerprinting II Informatix cluster analysis is an optional module that adds dendrogram and phylogenetic tree construction, cluster and group significance, and congruence of techniques functions to ...
... II Informatix dimensioning ... optional module that ... analysis, multidimensional scaling, ... MANOVA, and self-organizing ...
... Cell Lines ,High Quality, Functionally-Validated, Ion Channel ... known for having a critical role in ... a key function in pain, CNS and ... have been investigated in therapeutic areas, such ...
Biology Products: