Navigation Links
Supervolcano eruption -- in Sumatra -- deforested India 73,000 years ago
Date:11/23/2009

tope ratios in fossil soil carbonates taken from directly above and below the Toba ash in three locations in central India.

Carbon isotopes reflect the type of vegetation that existed at a given locale and time. Heavily forested regions leave carbon isotope fingerprints that are distinct from those of grasses or grassy woodlands.

Both lines of evidence revealed a distinct change in the type of vegetation in India immediately after the Toba eruption, the researchers report. The pollen analysis indicated a shift to a "more open vegetation cover and reduced representation of ferns, particularly in the first 5 to 7 centimeters above the Toba ash," they wrote in the journal Palaeogeography, Palaeoclimatology, Palaeoecology. The change in vegetation and the loss of ferns, which grow best in humid conditions, they wrote, "would suggest significantly drier conditions in this region for at least one thousand years after the Toba eruption."

The dryness probably also indicates a drop in temperature, Ambrose said, "because when you turn down the temperature you also turn down the rainfall."

The carbon isotope analysis showed that forests covered central India when the eruption occurred, but wooded to open grassland predominated for at least 1,000 years after the eruption.

"This is unambiguous evidence that Toba caused deforestation in the tropics for a long time," Ambrose said. This disaster may have forced the ancestors of modern humans to adopt new cooperative strategies for survival that eventually permitted them to replace neandertals and other archaic human species, he said.


'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Rosetta Stone of supervolcanoes discovered in Italian Alps
2. Complex dynamics underlie bark beetle eruptions
3. September 2007 Sumatran earthquakes research findings
4. Saving Sumatra: Indonesia reaches historic agreement
5. Destruction of Sumatra forests driving global climate change and species extinction
6. Body part by body part, Sumatran tigers are being sold into extinction
7. Berkeley Lab lends expertise to India to promote energy efficiency
8. Indiana U. at APHA: Studies about health education for people with ID, stability balls at work
9. Geologists studying groundwater arsenic levels in India empower Bengali women, children
10. Scientists identify common HPV genotypes in northern India, encourage vaccination
11. Arthritis Foundation of India Trust named winner of 2009 IOF Linda Edwards Memorial Award
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Supervolcano eruption -- in Sumatra -- deforested India 73,000 years ago
(Date:7/8/2015)... , July 8, 2015 The consumer ... this summer,s must have products such as wearables, smart wallets ... popularity for biometrics based devices continues to rapidly grow.  Biometrics ... (NASDAQ: NXTD ), Google Inc. (NASDAQ: GOOG ), ... FIT ), GoPro, Inc. (NASDAQ: GPRO ) and Baidu ...
(Date:7/2/2015)... -- Research and Markets( http://www.researchandmarkets.com/research/jvft55/next_generation ) ... Biometrics Market by Application, Technology, Function & Geography - ... The next generation biometrics market is expected ... of 17.9% between 2015 and 2020 Travel ... Safran SA ( France ), ...
(Date:6/26/2015)... , June 26, 2015 ATL Technology, LLC, a ... with specialties in single use solutions, headquartered in ... Inc. (a California corporation with locations ... San Jose, Costa Rica ). This ... Rica with ATL Technology,s existing facility in ...
Breaking Biology News(10 mins):Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 2Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 3ATL Technology Announces Acquisition of MedConx, Inc. and Expanded Global Footprint 2
... Kan. -- Like a stealthy enemy, blast disease invades rice crops ... the most important global food sources. Now, a study by ... rice blast fungus, Magnaporthe oryzae , invades plant tissue. The ... which by some estimates destroys enough rice to feed 60 million ...
... Bethesda, MD FASEB MARC (Maximizing Access to Research ... the FASEB Science Research Conferences held in June, 2013. ... underrepresented minority students, postdoctorates and scientists into the mainstream ... participation of young scientists at the FASEB Science Research ...
... in French . Imagine being ... zoom into Google maps of the world and can see houses on a ... complex structure in the universe with 86 billion neurons. Zooming in is ... is the first 3D microstructural model of the entire human brain, and ...
Cached Biology News:Scientists discover new details about rice blast, a deadly plant fungus 2A revolutionary new 3-D digital brain atlas 2
(Date:7/23/2015)... ... July 23, 2015 , ... One hundred years ago this year, ... Model Aeroplane Competition, with hopes of winning the Henry S. Villard Trophy. The Academy ... Participants will have the opportunity to build a Free Flight fantasy club worthy of ...
(Date:7/23/2015)... ... 23, 2015 , ... July 23, 2015, Chicago - Advances ... options with fewer side effects, according to Erik P. Sulman, MD, PhD, associate ... the American Brain Tumor Association (ABTA) National Patient and Family Conference in Chicago, ...
(Date:7/23/2015)... - Portage Biotech Inc. ("Portage") (OTC Market: PTGEF, Canadian ... Limited (Biohaven), are pleased to announce that Biohaven ... with the U.S. Food and Drug Administration (FDA) ... 54% equity interest in Biohaven, a private company. ... and Biohaven has entered into an exclusive worldwide ...
(Date:7/23/2015)... -- OncoSec Medical Incorporated ("OncoSec") (NASDAQ: ONCS ), ... and the general public to its Annual Shareholder Meeting ... 31, 2015. The meeting will be held at the ... San Diego, California 92121.   ... available. Please use the following link to register for ...
Breaking Biology Technology:Academy of Model Aeronautics to Start Online Fantasy Flight Competition 2Radiation Oncology Advances Improve Safety and Efficacy of Treatment for Brain Tumors 2Radiation Oncology Advances Improve Safety and Efficacy of Treatment for Brain Tumors 3Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 2Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 3Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 4OncoSec to Webcast Annual Meeting of Stockholders 2
... Wis. - Citing the need to deliver an ... context of its electronic medical records, Aurora Health ... product developed by TeraMedica , a privately held ... over the next several months, will enable Aurora to ...
... their patent rights against potential infringers by licensing the ... infringing activity. Thanks to a recent Federal Circuit Court ... the patent owner would do this by sending out ... to pay for a license and then negotiating the ...
... of the nation again, and myriads of opinions are being voiced. ... they are driven by an almost equal number of misconceptions and ... , ,A recent article run on WTN by ... to use to examine one small part of the immigration debate ...
Cached Biology Technology:Patent licensing: For enforcing companies, the rules have changed 2Patent licensing: For enforcing companies, the rules have changed 3Misconceptions dominate the immigration debate 2Misconceptions dominate the immigration debate 3Misconceptions dominate the immigration debate 4Misconceptions dominate the immigration debate 5
For the differentiation of mouse embryonic stem cells tooligodendrocytes....
Preadipocyte factor-1 [Pref-1, DLK-1], C-terminal...
IC50: 35 ng/ml · Limit of detection: 8 ng/ml...
, Glycerol 30%...
Biology Products: