HOME >> BIOLOGY >> NEWS
Mammoths stranded on Bering Sea island delayed extinction

Woolly mammoths stranded on Pribilofs delayed extinction Fossil is first record in the Americas of a mammoth population to have survived the Pleistocene

St. Paul, one of the five islands in the Bering Sea Pribilofs, was home to mammoths that survived the extinctions that wiped out mainland and other Bering Sea island mammoth populations.

In an article in the June 17, 2004 edition of the journal Nature, R. Dale Guthrie, professor emeritus at the Institute of Arctic Biology at the University of Alaska Fairbanks, says that when mammoths on the mainland of Alaska and other Bering Sea islands died out during the extinctions at the end of the Pleistocene era (about 11,000 years ago) those on the Pribilofs survived and new radiocarbon dates show how.

It was a matter of being in the right place at the right time and the mammoth tooth fossil that demonstrates Guthrie's point is the first record in the Americas of a mammoth population surviving the Pleistocene.

"During the last glacial maximum, when the sea level was about 120 meters below its current level, what are now the Pribilofs were simply uplands connected to the mainland by a large, flat plain," Guthrie said.

Using accelerator mass spectrometer (AMS) radiocarbon dating, bathymetric (water depth) plots, and sea transgression rates from the Bering Sea, Guthrie found that the mammoths became stranded on the Pribilofs about 13,000 years ago during the Holocene sea level rise after the last glacial maximum.

"Woolly mammoths became extinct on the mainland about 11,500 radiocarbon years ago," Guthrie said. At that time St. Lawrence Island was part of the Alaska mainland and presumably subject to the same extinction pressures as the mainland, but St. Paul had been an island for about 1,500 years.

"Radiocarbon-dated samples from St. Lawrence Island show similar dates of extinction to the mainland," Guthrie said, "but a sample from St. Paul dates to only 7,908 r
'"/>

Contact: Marie Gilbert
marie.gilbert@uaf.edu
907-474-7412
University of Alaska Fairbanks
16-Jun-2004


Page: 1 2

Related biology news :

1. Urban heat islands make cities greener
2. 90 million year old dino tracks found on resort island
3. Study helps explain island populations susceptibility to exotic diseases
4. UCLA study sheds new light on island evolution
5. Articles on life in tropical island streams published in BioScience
6. Attack of the crazy ants - invasional meltdown on an oceanic island
7. Study illustrates diversification, speciation in biological "islands"
8. Pollutant causes delayed flowering in plants
9. Genetics mutations resulting in delayed puberty are focus of MCG study
10. Global warming may be delayed by increase in ocean silica
11. Study details genetic basis of aging -- and how it might be delayed

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Mammoths stranded Bering Sea island delayed extinction

(Date:3/4/2015)... 04, 2015 Research and Markets ... the "Global Biometrics Market Forecast and Opportunities, ... The market for biometric authentication systems is projected ... till 2020 The driving forces for ... needs, government projects and constant development in technology. ...
(Date:3/2/2015)... , March 2, 2015 Synaptics Inc. ... of human interface solutions, today announced a new ... designed to enable rapid and secure transactions and ... for gaming is a turnkey solution providing mouse ... to quickly integrate fingerprint ID solutions into their ...
(Date:3/2/2015)... 2015   Neurotechnology , a provider of high-precision ... SentiGaze Software Development Kit (SDK). The SentiGaze algorithm ... off-the-shelf webcams to track eye movements and generate heatmaps ... Heatmaps can be used for applications such as analysis ... The SDK can also be used to develop interfaces ...
Breaking Biology News(10 mins):Global Biometrics Market Forecast and Opportunities, 2020 2Global Biometrics Market Forecast and Opportunities, 2020 3Synaptics Unveils New Fingerprint ID Solution for Gamers 2Synaptics Unveils New Fingerprint ID Solution for Gamers 3Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3
(Date:3/26/2015)... 2015 PAREXEL International Corporation (Nasdaq: ... research organization , announced today that the ... acquire all of the business assets of privately-owned ... of specialized pharmacovigilance services, based in Chandigarh, ... assessment, monitoring, and prevention of adverse effects ...
(Date:3/26/2015)... 26, 2015 Ale Gicqueau, Founder and ... of Clinical Affairs at Align Technology, on “ Conducting ... upcoming ACRP 2015 Global Conference and Exhibition on April ... , During the poster presentation, Ale Gicqueau and ... running a Postmarket Registry, the requirements and resources to ...
(Date:3/25/2015)... Balaton, MN (PRWEB) March 26, 2015 ... an upcoming episode of American Farmer, airing for the ... RFD-TV. The segment of American Farmer will explore the ... Agnition provides crop producers with a patented Microbial Catalyst™ ... farms and greater yields. The segment will air again ...
(Date:3/25/2015)... UK (PRWEB) March 25, 2015 ... uptake of smartphones have fuelled social media growth, ... being currently engaged in social networking. Insurance companies ... to communicate with clients and promote a diversity ... globe over are increasingly exploiting social networking services ...
Breaking Biology Technology:PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4Clinovo Presents at ACRP 2015 in Salt Lake City, Utah on April 25th-28th 2Clinovo Presents at ACRP 2015 in Salt Lake City, Utah on April 25th-28th 3Agnition to be Featured In Upcoming Episode of American Farmer on RFD-TV 2Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 2Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 3
Cached News: