Navigation Links
Ocean's harmful low-oxygen zones growing, are sensitive to small changes in climate
Date:6/17/2011

Deutsch said.

Sea surface temperatures vary over the course of decades through a climate pattern called the Pacific Decadal Oscillation, during which small changes in depth occur for existing low-oxygen regions, Deutsch said. Low-oxygen regions that rise to warmer, shallower waters expand as bacteria become more active; regions that sink to colder, deeper waters shrink as the bacteria become more sluggish, as if placed in a refrigerator.

"We have shown for the first time that these low-oxygen regions are intrinsically very sensitive to small changes in climate," Deutsch said. "That is what makes the growth and shrinkage of these low-oxygen regions so dramatic."

Molecular oxygen from the atmosphere dissolves in sea water at the surface and is transported to deeper levels by ocean circulation currents, where it is consumed by bacteria, Deutsch said.

"The oxygen consumed by bacteria within the deeper layers of the ocean is replaced by water circulating through the ocean," he said. "The water is constantly stirring itself up, allowing the deeper parts to occasionally take a breath from the atmosphere."

A lack of oxygen is not the only thing fish and other marine life must contend with, according to Deutsch. When oxygen is very low, the bacteria will begin to consume nitrogen, one of the most important nutrients that sustain marine life.

"Almost all algae, the very base of the food chain, use nitrogen to stay alive," Deutsch said. "As these low-oxygen regions expand and contract, the amount of nutrients available to keep the algae alive at the surface of the ocean goes up and down."

Understanding the causes of oxygen and nitrogen depletion in the ocean is important for determining the effect on fisheries and fish populations, he said.

Deutsch and his team used a computer model of ocean circulation and biological processes that produce or consume oxygen to predict how the ocean's oxyge
'/>"/>

Contact: Kim DeRose
kderose@support.ucla.edu
University of California - Los Angeles
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Office of Naval Research engages international partners at OCEANS 2011
2. Significant role of oceans in onset of ancient global cooling
3. UGA scientists discover missing links in the biology of cloud formation over the oceans
4. How do you manage US oceans? Look at local successes
5. First miniature sensors to measure the temperature of the world’s oceans
6. Cephalopods experience massive acoustic trauma from noise pollution in the oceans
7. Brown scientists to discuss best practices for the oceans
8. Acid oceans demand greater reef care
9. Oxygen-free early oceans likely delayed rise of life on planet
10. Sharks and wolves: Predator, prey interactions similar on land and in oceans
11. New Naked Scientists series investigates our oceans
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/5/2015)... August 5, 2015 According to ... Management Market by Software, Services, Vertical (BFSI, Airport, IT & ... - Global Forecast to 2020", published by MarketsandMarkets, defines ... globally into various segments. The global PIAM Market is ... $546.2 Million by 2019, at a CAGR of 14.9 ...
(Date:8/4/2015)... Aug. 04, 2015 ... has announced the addition of the ... and Service), Sub-Segment (Computer Forensics, Network Forensics, ... Types, Service, Vertical and Region - Global ... offering. By Component (Hardware, Software, ...
(Date:7/31/2015)... Kina, 31. juli 2015 Den 10. internationale ... af BGI fra den 22. - 25. oktober i ... fejrer sin 10-års fødselsdag i år. Siden starten i ... årlige møder på ,omik,-feltet, og er en af de ... ICG-10 fokuserer på nylige gennembrud og fremskridt inden ...
Breaking Biology News(10 mins):Physical Identity and Access Management Market Worth $546.2 Million by 2019 2Physical Identity and Access Management Market Worth $546.2 Million by 2019 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 4Digital Forensics Market - The Market Represents a Compound Annual Growth Rate (CAGR) of 11.3% From 2015 to 2020 2Den 10. internationale konference om Genomics (ICG-10) åbner i oktober 2
... known that racing cars and bicyclists can reduce air ... from New York University and Cornell University have found ... flags. Their study, published in the most recent issue ... that in a series of flags, the leading flag ...
... increasing popularity of reduced tillage on crops has not ... but it has also been associated with increasing organic ... peanut crops, however, reduced tillage has not gained a ... inconsistent yields have not encouraged farmers to make a ...
... With childhood obesity increasing, school administrators and public health ... schools. In a study published in the November/December 2008 ... Behavior , researchers found that reduction or elimination of ... consumption by adolescents. Working with four schools ...
Cached Biology News:Lead-flapping objects experience less wind resistance than their trailing counterparts 2Tillage, rotation impacts peanut crops 2
(Date:8/27/2015)... , Aug. 27, 2015 /PRNewswire/ - Portage Biotech ... PBT.U), and Biohaven Pharmaceutical Holding Company Limited (Biohaven), ... Phase I study of BHV-0223, a glutamate modulating ... regarding BHV-0223 and recently obtained clearance from the ... with human testing. Portage holds 54% equity interest ...
(Date:8/27/2015)... , August 27, 2015 GlassesOff ... image processing functions in the human vision system, announced today ... point guard Chris Paul to develop a ... who want to improve their real-life on-court performance. ... court, whether it is shooting a ball or blocking a ...
(Date:8/26/2015)... ... August 26, 2015 , ... ... today that a second US laboratory is to open in Manhattan, Kansas in ... continued partnership and long-term growth of research and development through collaboration with researchers ...
(Date:8/26/2015)...  Platform therapeutic company Symic Biomedical, Inc. ("Symic") ... Phase II SBIR grant from the National Institutes ... agent to reduce arteriovenous fistula (AVF) failures, a ... disease (ESRD) patients undergoing hemodialysis. The two-year project, ... Digestive and Kidney Diseases (NIDDK), will allow Symic ...
Breaking Biology Technology:Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 4Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 2Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 3MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 2MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 3Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 2Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 3
... Recurring Disposables, Services and Accessories Revenue ... Irrigated Catheter Launch Provided, ST. LOUIS, March 3 ... the fourth quarter and full year,ended December 31, 2007., ... to $39.3 million,compared with $27.2 million in 2006. Sales ...
... Feb. 29 For the first time,researchers at ... spheres whose halves are physically or chemically,different -- ... when an alternating electrical field is applied to ... research, published in the Feb. 8, 2008, edition,of ...
... Feb. 29 Kendle (Nasdaq: KNDL ... today,announced that Vice President and Chief Marketing ... Annual Raymond James,Institutional Investors Conference. The conference ... Cypress in Orlando, March 2-5, 2008. Kendle,s,presentation ...
Cached Biology Technology:Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 2Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 3Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 4Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 5Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 6Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 7Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 8Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 9Stereotaxis Reports Fourth Quarter and Full Year 2007 Financial Results 10'Two-Faced' Particles Act Like Tiny Submarines 2'Two-Faced' Particles Act Like Tiny Submarines 3Kendle to Present at the 29th Annual Raymond James Institutional Investors Conference 2
... LiCl precipitation offers major advantages over other ... precipitate DNA, protein or carbohydrates. It is the ... or cDNA synthesis from RNA preparations. Note, LiCl ... total RNA isolations. If the RNA is to ...
...
...
The Captivate Disposable Sample Chamber is designed for use with the Captivate magnetic yoke assembly (C-24700) and can be used with our Captivate ferrofluid conjugates (C-21473 C-21474 C-21476) or ...
Biology Products: