HOME >> BIOLOGY >> NEWS
50,000-year-old plant may warn of the death of tropical ice caps

COLUMBUS, Ohio A simple stroll after a full day of field research near a high Andean glacier in Peru led glaciologist Lonnie Thompson to discover a bed of previously hidden plants that date back at least 50,000 years.

And while that discovery is novel enough to please any scientist, it's the implication that those perfectly preserved plants may suggest that really excites him.

Thompson, a professor of geological sciences at Ohio State University and a world-class glaciologist, has made nearly annual pilgrimages to Peru's Quelccaya ice cap to monitor its slow demise, a probably victim of recent global climate change. The glacier is retreating 40 times faster now than it was when the first aerial photographs were taken in 1963.

He told this story today as part of his Emiliani Lecture presentation at the annual meeting of the American Geophysical Union in San Francisco.

In 2002, he and his colleagues from the Byrd Polar Research Center had found a small bed of plants that had, until then, been buried by the ice cap. Carbon dating on those plants suggested that they had been buried nearly 5,000 years ago.

"We were surprised by those dates and had the plant tissue dated four times by two separate institutions," Thompson said, "but the dates remained the same."

This time, Thompson decided to look up a different valley, some 1.8 miles (3 kilometers) from the initial plant find. "But about a quarter-mile from there, I found yet another area of uncovered plants."

When Thompson returned to his campus lab, he packaged the three new samples and sent them off for carbon-dating as well. The first two yielded dates similar to the 2002 plant find -- about 5,200 years ago.

But the date for the third plant sample seemed radically skewed. "We had the samples dated at the National AMS Facility at Woods Hole Oceanographic Institute (NOSAMS) and later sent other samples to the Lawrence Livermore National Laboratory (LLNL)
'"/>

Contact: Lonnie Thompson
thompson.3@osu.edu
614-292-6652
Ohio State University
15-Dec-2004


Page: 1 2

Related biology news :

1. Circadian clock controls plant growth hormone
2. New system of wastewater treatment could reduce the size of treatment plants by half
3. First case of successful ovarian tissue transplantation between two, nonidentical sisters
4. Discovery in plant virus may help prevent HIV and similar viruses
5. US Department of Defense awards $1.6 million for implantable biochip research
6. News conference on plant diseases and issues important to California
7. Insulin grown in plants relieves diabetes in mice; UCF study holds promise for humans
8. Isoprene emission from plants -- a volatile answer to heat stress
9. Brains hearing center may reorganize after implant of cochlear device
10. Implanon, Norplant and Jadelle are all effective contraceptives -- but side effects vary
11. A new plant-bacterial symbiotic mechanism promising

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: year old plant may warn the death tropical ice caps

(Date:7/30/2014)... of America (ESA) has elected ten new Fellows of ... acknowledges outstanding contributions to entomology in one or more ... following Fellows will be recognized during Entomology 2014 -- ... November 16-19, 2014 in Portland, Oregon. , DR. ... Department of Plant, Soil and Entomological Sciences at the ...
(Date:7/30/2014)... Jackson Laboratory has received a pledge of $1 million ... name the Laboratory,s new Neurobehavioral Biometry Center. ... Center will enable the Laboratory to develop a greater ... the ultimate goal of accelerating the pace of research ... serve as a premier resource for the Laboratory and ...
(Date:7/30/2014)... changing climate threaten some of the world,s most ... establish seed collections to save the seeds in ... some genetic diversity., For decades, these seed collections ... a one-size-fits-all approach for how many seeds to ... regardless of species, pollination mode, growth habitat and ...
Breaking Biology News(10 mins):Entomological Society of America recognizes 2014 fellows 2Entomological Society of America recognizes 2014 fellows 3Entomological Society of America recognizes 2014 fellows 4Entomological Society of America recognizes 2014 fellows 5Entomological Society of America recognizes 2014 fellows 6Entomological Society of America recognizes 2014 fellows 7Entomological Society of America recognizes 2014 fellows 8Entomological Society of America recognizes 2014 fellows 9Entomological Society of America recognizes 2014 fellows 10Entomological Society of America recognizes 2014 fellows 11Entomological Society of America recognizes 2014 fellows 12Entomological Society of America recognizes 2014 fellows 13Entomological Society of America recognizes 2014 fellows 14Entomological Society of America recognizes 2014 fellows 15Entomological Society of America recognizes 2014 fellows 16Entomological Society of America recognizes 2014 fellows 17Rossi Foundation pledges $1M for JAX neurobehavioral research center 2Saving seeds the right way can save the world's plants 2
(Date:7/30/2014)... (PRWEB) July 30, 2014 LayerBio, Inc., ... completion of its first round of seed financing from ... enable preliminary efforts to develop a novel sustained-release product ... of our investors and their commitment to this important ... LayerBio. "Ophthalmology is one of many areas in which ...
(Date:7/29/2014)... 2014 “PharmaSphere: Emerging Biotech Investment ... Capital Funding” report provides in-depth analysis of the ... and venture capital segments of the financial industry, ... have significant impact on the future of emerging ... the report identifies regions of the world that ...
(Date:7/29/2014)... July 29, 2014 The advanced optical ... brain that are driving a revolution in the neurosciences ... peer-reviewed journal published by SPIE, the international society ... coincides with the launch of the BRAIN Initiative in ... that lay out a vision for and provide examples ...
(Date:7/29/2014)... LA JOLLA, Calif. , July 29, 2014 /PRNewswire/ ... therapy-based diagnostic and therapeutic company focused on extending the ... have hired Franz Och , Ph.D., an expert ... Chief Data Scientist. Och comes to HLI from Google ... of Google Translate. He will report directly to HLI ...
Breaking Biology Technology:Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 2Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 3Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 4SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 2SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 3SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 4Franz Och, Ph.D., Expert in Machine Learning and Machine Translation, Joins Human Longevity, Inc. as Chief Data Scientist 2Franz Och, Ph.D., Expert in Machine Learning and Machine Translation, Joins Human Longevity, Inc. as Chief Data Scientist 3
Cached News: