Navigation Links
UBC researcher gives first-ever estimate of worldwide fish biomass and impact on climate change
Date:1/15/2009

Are there really plenty of fish in the sea? University of British Columbia fisheries researcher Villy Christensen gives the first-ever estimate of total fish biomass in our oceans: Two billion tonnes.

And fish play a previously unrecognized but significant role in mitigating climate change by maintaining the delicate pH balance of the oceans, according to a study published in tomorrow's edition of the journal Science, co-authored by Christensen and a team of international scientists.

"By drinking salt water, fish ingest a lot of calcium, which needs to be removed or they will get renal stones," says Christensen, an associate professor in the UBC Fisheries Centre.

The team discovered that fish do this by binding the calcium to bicarbonate, and then excreting it as pellets of calcium carbonate, a chalk-like substance also known as "gut rocks," in a process completely separate from food digestion. For an animation of this process, visit www.publicaffairs.ubc.ca/download.

As the calcium carbonate from these pellets dissolves, it turns the seawater more alkaline, which has relevance for ocean acidification, and is impacted by the ocean's exchange of carbon dioxide (CO2) with the atmosphere.

To gauge the global impact of this process, Christensen and Simon Jennings from the UK's Centre for Environment, Fisheries and Aquaculture Science took two entirely different approaches to estimate the total biomass of fish in the world's ocean.

Jennings examined global ocean plant production and its efficiency as it moves through the food chain, while Christensen tallied global fish catches since 1950 and calculated how much fish there must have been in the oceans to support fisheries. The two approaches resulted in a close range of numbers: 0.8 to 2 billion tonnes.

"This study really is the first glimpse of the huge impact fish have on our carbon cycle and why we need them in the ocean," says Christensen.
'/>"/>

Contact: Brian Lin
brian.lin@ubc.ca
604-822-2234
University of British Columbia
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
6. U of MN researchers discover noninvasive diagnostic tool for brain diseases
7. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
8. Researchers discover new strategies for antibiotic resistance
9. Researchers find new taste in fruit flies: carbonated water
10. Binghamton University researchers investigate evolving malaria resistance
11. Antioxidant to retard wrinkles discovered by Hebrew University researcher
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/17/2014)... Researchers at UTSouthwestern Medical Center have found that ... E, called apoE3, helps repair the lining of blood ... get the benefit of this repair, putting them at ... we have identified one mechanism by which apoE3 promotes ... apoE4, is detrimental," said Dr. Philip Shaul , ...
(Date:9/17/2014)... As the United Kingdom forms a new crime unit ... an uproar last year over horse meat being passed ... a technique for detecting meat adulteration. They describe their ... in ACS, Journal of Agricultural and Food Chemistry ... fraud is a major global economic problem. But they ...
(Date:9/16/2014)... morbidity amongst women in Australia is increased by ... today (17 September) in BJOG: An International ... generally enjoy high standards of living; however, existing ... particular between indigenous and non indigenous Australians. , ... impact of socioeconomic position on severe maternal morbidities ...
Breaking Biology News(10 mins):Protein variant may boost cardiovascular risk by hindering blood vessel repair 2New study examines the impact of socioeconomic position & maternal morbidity in Australia 2New study examines the impact of socioeconomic position & maternal morbidity in Australia 3
... L. Billiar, associate professor of biomedical engineering at Worcester ... to work at the National University of Ireland Galway ... who will be in Ireland for the 2009-10 academic ... faculty to be awarded a Fulbright Scholar grant. ...
... the oil tanker Exxon Valdez was exiting Alaska,s Prince William ... the night. What happened next is considered one of the ... spilled into the pristine Alaskan waters, eventually covering 11,000 square ... the amount of oil spilled in the Exxon Valdez accident. ...
... May 13, 2009 The Association for Molecular Pathology ... American Civil Liberties Union (ACLU) and the Public Patent ... two human genes associated with breast and ovarian cancer ... mutations along these two genes, known as BRCA1 and ...
Cached Biology News:WPI professor receives Fulbright Scholarship to work on tissue engineering in Ireland 2UCSB scientists document fate of huge oil slicks from seeps at coal oil point 2UCSB scientists document fate of huge oil slicks from seeps at coal oil point 3UCSB scientists document fate of huge oil slicks from seeps at coal oil point 4Association for Molecular Pathology joins ACLU to challenge gene patents 2
(Date:9/17/2014)... JH Technologies announces the grand opening ... JH Technologies, a leader in sales and support of ... partnership with Leica Microsystems into the Southern California market. ... will be featured at the grand opening slated for ... is located within the JH Technologies office’s at 18025 ...
(Date:9/17/2014)... September 17, 2014 Terracon Corporation has ... its TerraPure tank . This addition to the ... from FDA-compliant linear polyethylene and available in 125 or ... and ships in two weeks or less. , The ... benefits found in Terracon’s existing TerraPure tank line – ...
(Date:9/17/2014)... , Sept. 17, 2014 Alternative Fuels Americas, Inc. ... form a Special Purpose Vehicle in partnership with Jatro Greentech, ... agro energy company. The SPV shall be called AFAI Jatro ... AFAI as majority shareholder. The SPV shall pursue Jatropha planting ... particularly Ethiopia . "Although ...
(Date:9/17/2014)... RXi Pharmaceuticals Corporation (NASDAQ: ... developing and commercializing innovative therapies addressing major unmet ... has been granted a patent by the United ... delivery system for delivering its "original" RNAi compounds ... treatment of diseases with an inflammatory component. Potential ...
Breaking Biology Technology:JH Technologies displays newest microscope imaging technology at Southern California showroom grand opening 2JH Technologies displays newest microscope imaging technology at Southern California showroom grand opening 3Terracon Introduces Pre-Engineered TerraPure® Tank for Ultrapure Water Applications 2AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 2AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 2RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 4
... Senomyx, Inc. (Nasdaq: SNMX ), a leading company ... and develop novel flavor ingredients for the food, beverage, ... the Company,s President and Chief Operating Officer, will present ... p.m. Pacific Time (4:30 p.m. Eastern Time) during the ...
... ... a leading organization dedicated to pricing strategy and pricing research globally and Vendavo®, a ... the Vendavo,s Pricing Knowledge Series training programs are now eligible for credit in the ... ...
... Dr. scar Custance from the National Institute for Materials Science ... for Experimental Work in Nanotechnology for his research in atomic-scale ... lead to more effective catalysts for the production of hydrogen ... be awarded in January 2010 near Palo Alto, California along ...
Cached Biology Technology:SENOMYX TO WEBCAST CORPORATE PRESENTATION AT THE 2009 BIOCOM INVESTOR CONFERENCE 2Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 2Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 3Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 4Researcher honored for experimental work in nanotechnology 2
BD Falcon microtest assay plate. 1536 well 12l, black, flat-bottom PS. Polystyrene, nonsterile, no lid. (15/sp, 60/ca) Packaging: 15 / pack, 60 / case ...
... wall plates have low background fluorescence, ... Not treated (or medium binding) polystyrene ... binds biomolecules through passive interactions,• ... of large molecules, such as antibodies, ...
... The Model 1575 immunowash microplate washer, 100-240 ... that have flat-, U-, or V-bottom wells. ... vertical needle positions to an accuracy of ... and overflow washing. It can store up ...
... Incubator is a compact benchtop and ... microprocessor controller with a large display ... agitation speed. Air circulation inside to ... Temperature can be easily calibrated from ...
Biology Products: