Navigation Links
Currents could disrupt ocean food chain

If increased precipitation and sea surface heating from global warming disrupts the Atlantic Conveyer current ?as some scientists predict ?the effect on the ocean food chain in the Atlantic and other oceans could be severe, according to a new study just published in Nature.

In a worst case scenario, global productivity of phytoplankton could decrease by as much as 20 percent and in some areas, such as the North Atlantic, the loss could hit 50 percent. The study was conducted by Andreas Schmittner, an assistant professor in the College of Oceanic and Atmospheric Sciences at Oregon State University.

In his sophisticated computer model, Schmittner does not predict that the Atlantic Conveyer current, which drags warm water from the southern tropics into the North Atlantic and warms Europe, will be disrupted. Rather, his study is one of the first to examine what would happen to the ocean food chain if such a disruption did take place.

"Phytoplankton are the basis of the entire marine food web," Schmittner said. "They ultimately affect everything from zooplankton to the larger fish that people consume."

The Atlantic Conveyer current has the strongest impact in the North Atlantic, but it is a global phenomenon, Schmittner said. Surface waters from the Pacific Ocean, the Indian Ocean, the Arabian Ocean and the southern Atlantic are pulled northward where they are cooled by the atmosphere in the North Atlantic. As the water cools, it sinks 2,000 to 3,000 meters and begins flowing southward. The upwelling from the mixing of waters constantly replenishes the supply of phytoplankton at the surface, forming a rich nutrient source at the bottom of the marine food web.

There is growing concern by a number of scientists, however, that higher levels of human-generated carbon dioxide could increase water and air temperatures and decrease salinity in the North Atlantic at a rate significant enough to prevent the sinking and ultimate mixing of the
'"/>

Source:Oregon State University


Page: 1 2

Related biology news :

1. Protein discovery could unlock the secret to better TB treatment
2. Tiny particles could solve billion-dollar problem
3. First atlas of key brain genes could speed research on cancer, neurological diseases
4. Discovery of key proteins shape could lead to improved bacterial pneumonia vaccine
5. A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020
6. How the environment could be damaging mens reproductive health
7. Dead zone area in Gulf could be increasing, researchers say
8. Growth in biomass could put US on road to energy independence
9. Nano-bumps could help repair clogged blood vessels
10. Researchers develop assay that could be applied to drug screening
11. Butterfly migration could be largest known
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Currents could disrupt ocean food chain

(Date:4/17/2014)... Mo. April 17 In the most densely forested ... forests reflect two centuries of human needs, values and ... and clearing forests for agriculture and development, have set ... a U.S. Forest Service study reports. , The report ... conditions and management needs in the Northern United States ...
(Date:4/17/2014)... NJ. April 16, 2014. Kessler Foundation has been ... million from the Department of Defense Spinal Cord ... principal investigator for the randomized, double-blinded, controlled, multi-site ... bone and muscle strength after spinal cord injury. ... & Engineering Research at Kessler Foundation. Two additional ...
(Date:4/17/2014)... This news release is available in German . ... enable us to recognise objects; they also provide us with ... we run, turn around, fall or sit still in a ... characteristic motion trace on our retinas. Seemingly without effort, our ... can maintain a stable position and a steady gaze during ...
Breaking Biology News(10 mins):Five anthropogenic factors that will radically alter northern forests in 50 years 2Five anthropogenic factors that will radically alter northern forests in 50 years 3Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2How vision makes sure that little fish do not get carried away 2How vision makes sure that little fish do not get carried away 3How vision makes sure that little fish do not get carried away 4
... that conducts kidney tests and transmits data through a ... office visits by people with diabetes and others with ... was developed in the research lab of Aydogan Ozcan, ... UCLA Henry Samueli School of Engineering and Applied Science, ...
... that exposure to low to moderate amounts of arsenic ... about 120 parts per billion of arsenic in well ... damage comparable to decades of smoking tobacco. Smoking, especially ... is the first population-based study to clearly demonstrate significant ...
... Satellite pictures of Saharan dust clouds have been in the ... raised more questions., How much impact did the Saharan dust ... home-grown dust?, Chellam, a professor in the department of civil ... of Engineering, is searching for answers to those and other ...
Cached Biology News:UCLA researchers invent portable device for common kidney tests 2Study adds lung damage to harmful effects of arsenic 2Study adds lung damage to harmful effects of arsenic 3Study adds lung damage to harmful effects of arsenic 4Unraveling the mystery of Saharan dust migration 2
(Date:1/15/2014)... A study has been launched to test ... track could help to tackle the problem of obesity.  This ... GP surgery based in Stowmarket) and academics at University Campus ... Telemetry technology, which is inspired by equipment used to collect ...
(Date:1/15/2014)... 15, 2014 The Microcompetition with Foreign DNA ... One of these latent viruses is the Epstein Barr Virus ... Rheumatoid arthritis (RA) is a chronic inflammatory disease that destroys ... found that RA patients have high concentrations of EBV DNA ...
(Date:1/15/2014)... Freeslate, Inc ., the leading provider ... Limited, one of India’s top five pharmaceutical companies, has ... for high throughput solid form screening. , ... wide range of quality, affordable generic and branded formulations ...
(Date:1/14/2014)... Date: Friday, April 11, 2014 , Time: 6 ... Almshouse Road, Warrington, Pa. , Details: The Hepatitis ... finding a cure for hepatitis B and improving the quality ... Crystal Ball on Friday, April 11 at Warrington Country Club ...
Breaking Biology Technology:Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2
... /PRNewswire-FirstCall/ - Nventa,Biopharmaceuticals Corporation (TSX: NVN) announced today financial ... amounts, unless,specified otherwise, are in Canadian dollars. Nventa ... per share, for the,three months ended September 30, 2007, ... per share, for the same period in 2006. For ...
... Nov. 7 BioSpace, the leading biotech job,board ... 300 biotechnology,and pharmaceutical job seekers to the BioSpace ... The BioSpace Career Fair attracted a steady ... diagnostics career,candidates from around the Maryland biotechnology cluster ...
... of Reading, School of Pharmacy have developed an important new ... premature birth and prenatal mortality. The findings are published in ... ONE. , Dr Che Connon, a Research Councils UK Fellow ... powerful X-ray beam to examine tiny structures within the protective ...
Cached Biology Technology:Nventa Biopharmaceuticals Corporation announces third-quarter 2007 financial results 2Nventa Biopharmaceuticals Corporation announces third-quarter 2007 financial results 3Nventa Biopharmaceuticals Corporation announces third-quarter 2007 financial results 4BioSpace Career Fair in Bethesda, Maryland Draws Hundreds of Industry Professionals 2Synchrotron radiation illuminates how babies' protective bubble bursts 2