Navigation Links
First animals oxygenated the ocean, study suggests
Date:3/9/2014

The evolution of the first animals may have oxygenated the earth's oceans contrary to the traditional view that a rise in oxygen triggered their development.

New research led by the University of Exeter contests the long held belief that oxygenation of the atmosphere and oceans was a pre-requisite for the evolution of complex life forms.

The study, published today in the leading journal Nature Geoscience, builds on the recent work of scientists in Denmark who found that sponges the first animals to evolve require only small amounts of oxygen.

Professor Tim Lenton of the University of Exeter, who led the new study, said: "There had been enough oxygen in ocean surface waters for over 1.5 billion years before the first animals evolved, but the dark depths of the ocean remained devoid of oxygen. We argue that the evolution of the first animals could have played a key role in the widespread oxygenation of the deep oceans. This in turn may have facilitated the evolution of more complex, mobile animals."

The researchers considered mechanisms by which the deep ocean could have been oxygenated during the Neoproterozoic Era (from 1,000 to 542 million years ago) without requiring an increase in atmospheric oxygen.

Crucial to determining oxygen levels in the deep ocean is the balance of oxygen supply and demand. Demand for oxygen is created by the sinking of dead organic material into the deep ocean. The new study argues that the first animals reduced this supply of organic matter both directly and indirectly.

Sponges feed by pumping water through their bodies, filtering out tiny particles of organic matter from the water, and thus helping oxygenate the shelf seas that they live in. This naturally selects for larger phytoplankton the tiny plants of the ocean which sink faster, also reducing oxygen demand in the water.

By oxygenating more of the bottom waters of shelf seas, the first filter-fe
'/>"/>

Contact: Eleanor Gaskarth
e.f.gaskarth@exeter.ac.uk
44-782-730-9332
University of Exeter
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Kessler Foundation implements Ekso Bionics first commercial robotic exoskeleton
2. Research reveals first evidence of hunting by prehistoric Ohioans
3. First model of how buds grow into leaves
4. American College of Rheumatology releases first classification criteria for polymyalagia rheumatica
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. First complete full genetic map of promising energy crop
7. FirstMark Announces New Hire Jay Houtman as Southeast Regional Sales Manager
8. FirstMark Exhibiting at the Inaugural Atlanta Clinical Cardiology Update
9. New technology tracks sparrow migration for first time from California to Alaska
10. First mass extinction linked to marine anoxia
11. Scientists complete first-ever emperor penguin count from space
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
First animals oxygenated the ocean, study suggests
(Date:8/19/2014)... news release is available in German . ... get new information about the metabolism of plants can ... However, Erich Kombrink from the Max Planck Institute for ... the University of Duisburg-Essen adopt a different approach. They ... metabolic process like brake pads and prevent the downstream ...
(Date:8/19/2014)... Daylight was breaking over the central Pacific and ... about a dozen scientists strategized for the day ahead. ... to collect water samples around the southern Line Islands, ... gizmos and delicate machinery strewn throughout the 158-foot research ... research group to bring a DNA sequencer out into ...
(Date:8/18/2014)... , August 19, 2014 ... Ready biometric authentication in smart devices  ... (TEEs) for smart devices, and Fingerprint Cards AB ... availability of FIDO Ready™ secure biometric authentication on ... FPCs touch fingerprint sensors (FPC1020, FPC1021 and FPC1150) ...
Breaking Biology News(10 mins):Researchers block plant hormone 2Researchers block plant hormone 3Sequencing at sea 2Sequencing at sea 3Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 2Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 3Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 4
... LOS ANGELES In research that one day may lead to ... disease, investigators at Childrens Hospital Los Angeles have identified PDGF ... epicardial cells, one type of cell that surrounds heart muscle ... September 21 in advance of the publication of the ...
... COLUMBIA, Mo. A cancer drug that benefits people ... teaching professor of oncology at the MU College of ... that examines the efficacy of Attaxol in dogs with ... by CritiTech, a Lawrence, Kan. drug development company. ...
... long encouraged by doctors as a supplement to support heart ... and colon cancer in mice in research led by Michigan ... Cancer Research . Jenifer Fenton, a food science and ... establishing a dose limit for docosahexaenoic acid (DHA), one of ...
Cached Biology News:Childrens Hospital LA discovers growth factor essential to epicardial cell function 2MU College of Veterinary Medicine to study efficacy of cancer drug in dogs 2Fish oil linked to increased risk of colon cancer in mice 2
(Date:8/18/2014)... (PRWEB) August 19, 2014 2014 ... Industryā€¯ is a professional and in-depth research report ... basic Linalool information, including its definition, classification, ... industry overview. This research covers the international market ... global industry analysis covering macroeconomic environment & economic ...
(Date:8/18/2014)... 18, 2014 BioElectronics Corporation (OTC ... medical devices said that its EVP Dr. ... CEOLIVE.TV as part of its Executive Interview ... available at http://ceolive.tv/bioelectronics-corp-otc-biel/biel-videos/2282-ceolive-tv-interview-bioelectronics-corp-otcqb-biel ... investors the unique advantages of BioElectronics patented ...
(Date:8/18/2014)... Global HIV Infection Drug Market and ... Reportstack. The rate of HIV infection and the number of ... at a positive rate across the globe. It has been ... 2005 to 1.5 in 2013, with the rates for children ... changes in the infection rates has been the improved access ...
(Date:8/18/2014)... -- TNI BioTech, Inc. (OTC-BB: TNIB) ("we" or the ... of innovative therapies for autoimmune diseases in emerging nations, ... notice of TNI BioTech,s annual meeting of September 4, ... Griffin , founder and CEO of TNI BioTech Inc. ... the Annual Meeting. On behalf of our employees and ...
Breaking Biology Technology:Linalool Industry & Diphenylamine Market (Global, China) 2014 Analysis Now Available at DeepResearchReports.com 2Linalool Industry & Diphenylamine Market (Global, China) 2014 Analysis Now Available at DeepResearchReports.com 3Linalool Industry & Diphenylamine Market (Global, China) 2014 Analysis Now Available at DeepResearchReports.com 4BioElectronics EVP Dr. Deepak Kotak Interviewed on CEO Live 2BioElectronics EVP Dr. Deepak Kotak Interviewed on CEO Live 3Global HIV Infection Drug Market Overview 2Global HIV Infection Drug Market Overview 3Global HIV Infection Drug Market Overview 4TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 2TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 3TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 4
... 2010 , , , ... and Safety Endpoints , , , ... European Medicines Agency in,2010 , , , ... focused on,women,s reproductive medicine, announces positive Phase III data from its,second pivotal study (PEARL I) for its ...
... PARIS , June 2 Cellectis ... Frederic Paques, PhD, Chief Scientific Officer, Julianne Smith , ... genome surgery, and Feng Zhang , PhD, Research Director ... results on meganucleases and genome surgery at the FASEB ...
... ... Council survey examines consumer attitudes toward food technology. , ... Washington, DC (Vocus) Junw 2, 2010 -- ... survey found that consumers support the use of food biotechnology when they consider its ...
Cached Biology Technology:PregLem Announces Positive Phase III Results for Esmya(TM) 2PregLem Announces Positive Phase III Results for Esmya(TM) 3PregLem Announces Positive Phase III Results for Esmya(TM) 4Cellectis to Present at the FASEB Summer Research Conference on Genome Engineering 2Cellectis to Present at the FASEB Summer Research Conference on Genome Engineering 3Interest in Environment & Sustainability Prevails in Food Technology Survey 2Interest in Environment & Sustainability Prevails in Food Technology Survey 3Interest in Environment & Sustainability Prevails in Food Technology Survey 4Interest in Environment & Sustainability Prevails in Food Technology Survey 5
... of large numbers of samples may be carried ... which requires minimum operator attention. System control ... and interface CE 4900. The elegant, powerful ... Windows XP and Windows 98 and 2000., The ...
This CLS number is a new product number, created to easily match Cornings product number. If showing no availability yet, please order under the old Sigma-Aldrich number (F1676) or contact customer s...
... is a new product number, created ... If showing no availability yet, please ... (E6152) or contact customer service for ... diam. 11.25 6.40 in. ...
A convenience pack containing one each of the most popular sizes of Cat. No. 4980 flask. Designed for the low volume user, a case contains one each of five sizes: 50mL, 125mL, 250mL, 500mL, and 1L....
Biology Products: