HOME >> BIOLOGY >> NEWS
Climate change plus human pressure caused large mammal extinctions in late Pleistocene

s in less than 500 years. Another suggestion, dubbed "sitzkrieg" after the term for a "sitting" war that shows slow or no progress, is that humans caused extinction through long-term habitat alteration.

Barnosky and his colleagues found sparse evidence outside Australia that humans were the sole cause of extinction. Data are sketchy for the Australian continent, Barnosky cautioned, but little climate change was going on at the time of extinction between 40,000 and 50,000 years ago. However, humans were certainly on the scene, and some scientists think that fires set by humans had as much to do with extinction as direct hunting. Over a few thousand years, Barnosky said, an extended sitzkrieg may have led to the extinction of large mammals such as kangaroos, wombats, the marsupial lion (Thylacoleo carnifex) and the largest ever marsupial, the 2 1/2-ton Diprotodon.

Elsewhere, human activities combined to a greater or lesser degree with climate change to lead to extinctions. In Europe and parts of Asia, mammals such as the giant Irish deer or Irish elk died out broadly toward the end of the late Pliestocene, in some areas before humans were present. Earlier, though, warm-adapted megafauna such as straight-tusked elephants (Palaeoloxodon) and hippos, which were abundant during preceding interglacials, disappeared with the cooling of the last ice age, starting around 45,000 years ago and persisting up to the height of the glacial period 20,000 years ago.

"This is a very clear case of climate-caused extinction without the significant input of humans," Barnosky said.

Similarly, in Alaska and the Yukon, the disappearances of short-faced bears, such as the grizzly-like Arctodus simus, the largest land carnivore ever to inhabit North America; mammoths; and two horse species occurred before apparent signs of human contact.

A second pulse of climate-caused extinctions began in Europe and Asia about 12,000 years ago as cold-adapted animals
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
30-Sep-2004


Page: 1 2 3 4 5

Related biology news :

1. Climate change could doom Alaskas tundra
2. Climate may play role in lynxs hunting ability
3. Climate change Qs & As
4. Climate change may threaten more than one million species with extinction
5. Climate linked to reproduction of right whales
6. Climate change linked to migratory bird decrease
7. Climate affects recent crop yield gains
8. Climate change surprise: High carbon dioxide levels can retard plant growth, study reveals
9. Climate and cholera: An increasingly important link
10. Grant from Vetlesen Foundation supports URI Graduate School of Oceanography Climate Research
11. Climate monitoring goes mobile

Post Your Comments:
(Date:8/18/2015)... , Aug. 18, 2015  Navitas today ... contributor to the Submission Content Management webinar ... a non-profit forum. Dedicated to the Implementation of ... neutral platform for industry, vendors, health authorities, ... and work towards a standard method of ...
(Date:8/12/2015)... SPRINGS, Florida , August 12, 2015 ... the pace of mobile payment innovation and advanced biometrics ... to replace the way consumers rely on using their ... ahead with reinventing the future for payment services led ... (NASDAQ: NXTD ), :  Google, Inc. (NASDAQ: ...
(Date:8/10/2015)... TELTOW, Germany , August 10, 2015 ... a world leader in Eye Tracking Technology for more ... OEM Eye Tracking Platform for integration into all consumer ... reference designs for seamless integration of eye tracking into ... HMDs and augmented reality smart glasses. Omnivision,s leading sensor ...
Breaking Biology News(10 mins):Navitas, a Key Contributor in IRISS Forum Webinar 2Navitas, a Key Contributor in IRISS Forum Webinar 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 2Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 4Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 5Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 6SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3
(Date:8/27/2015)... -- HUYA Bioscience International (HUYA) today announced the sponsorship of ... HTLV-1, held this week at the University of Tokyo ... is to promote research on HTLV-1 and HTLV-1-associated diseases, ... research related to these fields to advance science, the ... to support this prestigious conference," said Mireille Gillings ...
(Date:8/27/2015)... ... August 27, 2015 , ... ... presented new data on the relationship of genetics and hypertension at the ... Heart Disease in Vancouver, British Columbia, Canada. The event, which boasts an extensive ...
(Date:8/26/2015)... Aug. 26, 2015  The Diabetes Research Institute ... of Miami Miller School of Medicine, announced today ... to test for the first time a novel ... This FDA approved Phase I/II study builds upon ... is an important first step toward the development ...
(Date:8/26/2015)... 2015 After litigating and negotiating patent ... to P2i United States patent RE43,651 ... the United States without any admission ... either party. As a result of the parties, settlement, the ... California dismissed the case without prejudice. ...
Breaking Biology Technology:HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4P2i Settles United States Litigation 2
Cached News: