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:10/28/2014)... Health (NIH) announced awards to expand the Office ... Center for Advancing Translational Sciences (ORDR-NCATS) collaborative Rare ... network, physician scientists at 22 consortia will work ... research and investigate new treatments for patients with ... $29 million in fiscal 2014 funding from NIH. ...
(Date:10/28/2014)... in a novel environment are linked to individual ... experimental study completed at the University of Eastern ... Institute. The study used novel, long-term observations of ... to analyse if behaviours predict the vulnerability to ... enriched hatchery rearing environments. Based on the ...
(Date:10/28/2014)... associated with a lower risk of developing ovarian cancer, ... Anglia (UEA). , Research published today reveals that ... subclasses of dietary flavonoids) significantly decrease their risk of ... death among women. , The research team studied ... and 55 for more than three decades. , ...
Breaking Biology News(10 mins):NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 2NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 3Fish 'personality' linked to vulnerability to angling 2Tea and citrus products could lower ovarian cancer risk, new UEA research finds 2
(Date:10/30/2014)... October 30, 2014 2014 Deep ... Industryā€¯ is a professional and in-depth research report ... basic Naltrexone HCL information, including its definition, classification, ... industry overview. This research covers the international market ... global industry analysis covering macroeconomic environment & economic ...
(Date:10/30/2014)... San Diego, CA (PRWEB) October 30, 2014 ... company announced today that they have manually curated public ... Pharma and non profit customers. the data is ... BioSciences manually curates and unifies public and internal data ... more value and knowledge out of the data that ...
(Date:10/30/2014)... New York, NY (PRWEB) October 30, 2014 ... investment plan for its ICH Stability Testing and Package ... companies, this investment centers on a dramatic increase in ... larger volume of stability, storage and aging samples to ... first stage of this major capital expenditure has already ...
(Date:10/30/2014)... , Oct. 30, 2014 Isis Pharmaceuticals, Inc. ... today announced that management will present a company overview at ... 8:30 a.m. ET in Boston, MA. ... available on the "Investors & Media" section of the Company,s ... the Isis website within 48 hours and will be archived ...
Breaking Biology Technology:Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3Rancho BioSciences Manually Curated TCGA Data Sets Available 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 3Isis Pharmaceuticals to Present at the Nomura Biotechnology Conference 2
Cached News: