Navigation Links
Greenhouse ocean study offers warning for future
Date:5/17/2011

The mass extinction of marine life in our oceans during prehistoric times is a warning that the Earth will see such an extinction again because of high levels of greenhouse gases, according to new research by geologists.

Professor Martin Kennedy from the University of Adelaide (School of Earth & Environmental Sciences) and Professor Thomas Wagner from Newcastle University (Civil Engineering and Geosciences) have been studying 'greenhouse oceans' oceans that have been depleted of oxygen and suffered from increases in carbon dioxide and temperature.

Using core samples drilled from the ocean bed off the coast of western Africa, the researchers studied layers of sediment from the Late Cretaceous Period (85 million years ago) across a 400,000-year timespan. They found a significant amount of organic material marine life buried within deoxygenated layers of the sediment.

"Our research points to a mass mortality in the oceans at a time when the Earth was going through a greenhouse effect, with high levels of carbon dioxide in the atmosphere, and rising temperatures, leading to a severe lack of oxygen (hypoxia) in the water that marine animals are dependent on," Professor Kennedy says.

"What's alarming to us as scientists is that there were only very slight natural changes that resulted in the onset of hypoxia in the deep ocean. This occurred relatively rapidly in periods of hundreds of years, or possibly even less not gradually over longer, geological time scales, which suggests that the Earth's oceans are in a much more delicate balance during greenhouse conditions than originally thought, and may respond in a more abrupt fashion to even subtle changes in temperature and CO2 levels than previously thought."

Professor Wagner says the results of their research, published in the Proceedings of the National Ac
'/>"/>

Contact: Martin Kennedy
martin.kennedy@adelaide.edu.au
61-883-035-378
University of Adelaide
Source:Eurekalert

Page: 1 2

Related biology news :

1. Carbon dioxide scrubber captures greenhouse gases
2. Greenhouse gas auction revenues can help cut Md. electric use significantly, says study
3. Potent greenhouse gas more prevalent in atmosphere than previously assumed
4. MIT analysis shows how cap-and-trade plans can cut greenhouse emissions
5. MIT: Safe storage of greenhouse-gas carbon dioxide
6. Oil spray reduces greenhouse gas emissions from pig finishing barns
7. Termite insecticide a potent greenhouse gas
8. Detecting disease in greenhouse plants
9. Termite killer lingers as a potent greenhouse gas
10. New greenhouse gas identified
11. Fish oils reduce greenhouse gas emissions from flatulent cows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... increased risk of kidney injury related to the use ... mass of HES molecules, according to a report in ... International Anesthesia Research Society (IARS). , The "total mass ... on cultured human renal proximal tubule cells (PTCs), concludes ... of University Hospital Wrzburg, Austria. Other factorssuch as ...
(Date:7/11/2014)... type 1 can inhibit voltage-gated calcium channel, ... release. However, some scholars demonstrated that cannabinoid ... influx and increase neurotransmitter release. Dr. Yi ... to Tongji Medical College, Huazhong University of ... voltage-clamp and calcium imaging in cultured trigeminal ...
(Date:7/10/2014)... Fe, Albuquerque, and other major cities in New Mexico, ... treated municipal wastewater rather than precious potable water supplies. ... 40% of all golf courses receive treated effluent. Reusing ... , Additionally, golf courses and homeowners alike fertilize their ... fertilizer is nitrate. A New Mexico State University turfgrass ...
Breaking Biology News(10 mins):In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2'Tailored' water -- the latest in lawn care 2
... ,Communication Intelligence Corporation (OTC Bulletin Board: CICI) ("CIC"),a ... process,automation in the financial industry and the recognized ... of Michael Betts to,the CIC Board of Directors. ... experience in the insurance and,financial services industries and ...
... McConnell, Director of,National Intelligence and James R. Clapper, ... valuable insights into the intelligence,challenges of the future, ... Community 100 Day Plan for INTEGRATION and COLLABORATION. ... the Director of National Intelligence and the National,Defense ...
... IdentiPHI announces the launch of SAFmodule(TM) 3.1 ... Services (NMAS) biometric authentication methods, AUSTIN, ... brings,secure, easily managed biometric authentication to Novell(R) ... with Novell,s,Novell Modular Authentication Service (NMAS(TM)) security ...
Cached Biology News:Michael A. Betts, Seasoned Financial Services Executive, Joins CIC Board of Directors 2Michael A. Betts, Seasoned Financial Services Executive, Joins CIC Board of Directors 3IdentiPHI Re Launches SAFmodule Software to Secure Novell(R) Networks 2
(Date:7/10/2014)... A new study published today in the journal ... has found that time of day and sleep deprivation ... could be crucial when looking at the best time ... and heart disease, and for administering medicines effectively. , ... of Cancer Research, London, investigated the links between sleep ...
(Date:7/10/2014)... observed the fractional quantum Hall effect in bilayer graphene ... be tuned by an electric field. , The ... confined to thin sheets are exposed to large magnetic ... thousands of individual electrons behave as a single system. ... well established, many details of this collective behavior remain ...
(Date:7/10/2014)... spiders can sit upside down forever. Nanophysics makes sure of ... an article just published in Physical Review E . ... and spiders that seem to be able to sit still ... for many years. We will soon be able to buy ... gecko,s foot. But the fact is, sooner or later the ...
(Date:7/10/2014)... researchers at the University of Illinois at Urbana-Champaign ... the interplay of spin and heat at the ... spintronic devices for data storage and information processing. ... as spin-angular momentum. In a typical charge current, ... spin current," explained David Cahill, a professor of ...
Breaking Biology Technology:Time of day crucial to accurately test for diseases, new research finds 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3Even geckos can lose their grip 2University of Illinois study advances limits for ultrafast nano-devices 2
... Pa., June 22 Environmental Tectonics Corporation,s (OTC Bulletin ... announced that the Japan Ministry of Health, Labor and ... foreign manufacturer in Japan. , , ETC worked ... to help ensure that our monoplace hyperbaric chambers passed ...
... , BERLIN, NIMES, France and RICHMOND, Calif., June ... company, Cezanne, and Lumiphore Inc., a biotechnology leader ... in high-value applications, announced that they have signed ... in BRAHMS diagnostic tests. , , ...
... NEW YORK, June 22 NeoStem, Inc. (NYSE Amex: ... storage of adult stem cells for future medical need, was featured ... Street," on June 18, 2009. Also, on June 16, 2009, ... in a substantial Fortune Magazine article distributed by CNNMoney.com. ...
Cached Biology Technology:Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 2Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 3Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 4BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 2BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 3NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 2NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 3NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 4NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 5
Medium for cryopreserving subcutaneous or omental preadipocytes...
... Exclusive ultra high yield technology is fast ... Amplifies aRNA for gene array analysis ... , Kits specific for templates ... promoters , All kits contain ...
Rad 51C Immunogen: His-tagged human Rad 51C, over-expressed in E. coli Storage: 4 C...
...
Biology Products: