Navigation Links
Research charts the ecological impact of microbial respiration in the oxygen-starved ocean
Date:7/23/2014

A sulfur-oxidizing bacterial group called SUP05 will play an increasingly important role in carbon and nutrient cycling in the world's oceans as oxygen minimum zones expand, according to research published this week in the Proceedings of the National Academy of Sciences.

University of British Columbia researchers plumbed the depth of a seasonally anoxic fjord, Canada's Saanich Inlet, to chart how microbial community metabolism changes as oxygen minimum zones form.

"Our study paints a very detailed picture of how SUP05 a bacterial group related to gill symbionts of deep-sea clams and mussels dominates the microbial ecology of oxygen-starved regions of the water column," says UBC microbiologist and study author Steven Hallam.

"SUP05 breathes in nitrate and exhales nitrous oxide. This respiratory process drives carbon dioxide fixation and the removal of toxic hydrogen sulphide and closely couples the metabolic activities of SUP05 with other microorganisms involved in carbon, nitrogen and sulfur cycling."

Saanich Inlet, a fjord on Vancouver Island in British Columbia, undergoes seasonal cycles of stratification and deep-water renewal, creating strong water column gradients that make the Inlet a natural lab in which to study microbial communities that thrive under oxygen starved conditions. Hallam's team dissected the water column layer by layer using genomic and proteomic methods.

Dissolved oxygen concentration is a critical organizing principle in ocean environments. Over the past 50 years oxygen minimum zones have expanded due to climate change and increased waste run-off from farms and cities. At present eight per cent of the ocean is considered oxygen-starved. In some coastal areas extreme oxygen-starvation produces 'dead zones' that decimate marine fisheries and destroy food web structure.

Changes in microbial community metabolism associated with oxygen minimum zones alter the ocean's nutrient and energy flow patterns, also impacting the production and consumption of greenhouse gases.


'/>"/>
Contact: Chris Balma
balma@science.ubc.ca
604-822-5082
University of British Columbia
Source:Eurekalert

Related biology news :

1. Intestinal parasites are old friends, researchers argue
2. UNH NHAES researchers work to save endangered New England cottontail
3. Researchers create vaccine for dust-mite allergies
4. Cleveland Clinic researchers discover neuroprotective role of immune cell
5. Researchers provide guide to household water conservation
6. UCI researchers find epigenetic tie to neuropsychiatric disorders
7. International Space Station researcher guides aim to maximize science
8. Researchers simplify process to purify water using seed extracts
9. New research links bad diet to loss of smell
10. UM-led research team contributes to the management of South Florida coastal environments
11. BIOTEC researcher is one of the Highly Cited Researchers 2014
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/11/2016)... , Feb. 11, 2016  According to new ... officially mainstream. More than 200 fingerprint, iris, and ... 2013 under 70 brand names. This includes market ... and ZTE. Acuity projects that 600 million biometric ... the global installed base. Maxine Most ...
(Date:2/11/2016)...  Vigilant Solutions announces today that its license plate recognition ... Lee,s Summit Police Department to improve ... of a homicide suspect. Kansas City ... square miles and is home to roughly 100,000 residents. ... mobile license plate reader system and also leverages Vigilant,s network ...
(Date:2/10/2016)... India , February 10, 2016 /PRNewswire/ ... --> According to 2016 iris recognition ... identification iris recognition is more widely accepted ... available with both fingerprint and iris recognition ... the user to avoid purchasing two individual ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... ... 12, 2016 , ... The Pittcon 2016 Exposition, which takes ... include 848 exhibitors (count as of February 9) of which 119 are first ... by the scientific community in industrial, academic, and government labs. The Exposition will ...
(Date:2/12/2016)... FRANKLIN LAKES, N.J. , Feb. 12, 2016 /PRNewswire/ ... a leading global medical technology company, today announced the ... Advances in Genome Biology and Technology (AGBT) Meeting. ... BD CLiC System enables genomic research by providing cost ... BD CLiC System is a high-throughput, fully integrated, next ...
(Date:2/12/2016)... N.J. , Feb. 12, 2016  PTC ... the second annual STRIVE (Strategies to Realize Innovation, ... muscular dystrophy (DMD). STRIVE provides funds to patient ... that will make meaningful contributions to the rare ... fostering development of future patient advocates. ...
(Date:2/12/2016)... SAN FRANCISCO , February 12, 2016 /PRNewswire/ ... Precision Medicine Efforts by Enabling Scientific Understanding of ... Disorders and Rare Diseases --> ... for genomic diagnostics in South Asia and a leading ... it would contribute $10 million to the GenomeAsia ...
Breaking Biology Technology: