Navigation Links
Research charts the ecological impact of microbial respiration in the oxygen-starved ocean

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
University of British Columbia

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:
(Date:11/17/2015)...  Vigilant Solutions announces today that Mr. Dick ... --> --> Mr. ... partnership at TPG Capital, one of the largest global ... in revenue.  He founded and led TPG,s Operating Group, ... from 1997 to 2013.  In his first role, he ...
(Date:11/12/2015)... 12, 2015  Arxspan has entered into an ... Harvard for use of its ArxLab cloud-based suite ... The partnership will support the institute,s efforts to ... research information internally and with external collaborators. The ... managing the Institute,s electronic laboratory notebook, compound and ...
(Date:11/10/2015)... , Nov. 10, 2015 ... behavioral biometrics that helps to identify and verify ... Signature is considered as the secure and accurate ... identification of a particular individual because each individual,s ... accurate results especially when dynamic signature of an ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... - Zenith Epigenetics Corp. ("Zenith" or the "Company") today announced ... to its Board of Directors to replace Dr. Peter ... of experience as co-founder of Resverlogix, with expertise in the ... --> Dr. Wong remarked, "I am very ... long standing expertise in epigenetics and the advanced stage of ...
(Date:11/30/2015)... Human Longevity, Inc. (HLI), the genomics-based, technology-driven ... Genomics, Inc., a leading genome informatics company offering highly ... The San Diego -based company has ... and Co-founder, Ashley Van Zeeland , Ph.D., who is ... of the deal were not disclosed. ...
(Date:11/30/2015)... 30, 2015  AbbVie, is introducing Good Morning ... a daily routine for managing the life-long condition of ... affect the way the body absorbs it so resources ... daily routine are important. The goal of the new ... manage their hypothyroidism by establishing a daily routine, spirit ...
(Date:11/30/2015)... Israel , Nov. 30, 2015 BrainStorm Cell ... of adult stem cell technologies for neurodegenerative diseases, today announced ... awarded an additional grant of approximately $735,000 from ... grant, the second this year, brings the total awarded by ... (approximately NIS7 million).  ...
Breaking Biology Technology: