Navigation Links
The biomass of ocean mesopelagic fish is 10 times higher than estimated
Date:2/7/2014

The total stock of fish on the planet had been reckoned until today to be around 2,000 million tonnes. About half of them were thought to be mesopelagic fish, in other words, ones found at depths of between 200 and 1,000 metres in ocean areas.

However, an international team*, in which AZTI-Tecnalia researchers are participating and which is being led by the doctor in oceanography Xabier Irigoien, has discovered that its abundance could be at least 10 times higher than the original estimate. The results have been published in the journal Nature Communications.

Mesopelagic fish spend the daytime in the twilight zone of the ocean at a depth of between 200 and 1,000 metres and come up to the surface to feed during the night, in what could be regarded as the planet's biggest animal migration. They constitute a significant part of tuna feed, but as they are not fished commercially they continue to be one of the great unknowns.

In this new study, researchers have combined the acoustic data from the Malaspina expedition with a trophic model to conclude that the biomass of these fish must be at least 10 times higher than what had been previously estimated.

As mesopelagic fish feed on the surface and migrate every day to depths of more than 500 metres, they speed up the transport of CO2 to the bottom of the ocean. They also contribute towards increasing oxygen consumption in deep waters. The new biomass estimates indicate that their role in the ocean's biogeochemical cycles needs to be reassessed.


'/>"/>
Contact: Irati Kortabitarte
i.kortabitarte@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

Page: 1

Related biology news :

1. Fish biomass in the ocean is 10 times higher than estimated
2. Biomass supply chains developed by VTT speed up use of bioenergy in Vietnam
3. Burning biomass pellets instead of wood or plants in China could lower mercury emissions
4. 21st European Biomass Conference and Exhibition
5. Biomass research collaboration seeks to improve biofuel efficiency, bio-products quality
6. Biomass analysis tool is faster, more precise
7. Bering Sea study finds prey density more important to predators than biomass
8. Algae Biomass Organization hails new UCSD study showing saltwater algae viable for biofuels
9. Biomass characterization technology research highlighted in Industrial Biotechnology journal
10. Denmark can triple its biomass production and improve the environment
11. The weight of nations: An estimation of adult human biomass
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
(Date:4/11/2017)... Research and Markets has announced the addition ... their offering. ... tracking market to grow at a CAGR of 30.37% during the ... 2017-2021, has been prepared based on an in-depth market analysis with ... its growth prospects over the coming years. The report also includes ...
(Date:4/5/2017)... April 5, 2017 Today HYPR Corp. ... the server component of the HYPR platform is officially ... the end-to-end security architecture that empowers biometric authentication across ... has already secured over 15 million users across the ... of connected home product suites and physical access represent ...
Breaking Biology News(10 mins):
(Date:8/11/2017)... , ... August 11, 2017 , ... A staple in ... this month that will incorporate important key elements including a new digital marketing strategy ... that has supported them, Bill Miller has partnered with the South Texas Blood & ...
(Date:8/10/2017)... ... August 09, 2017 , ... Teachers from ... students. From August 14th through the 16th, the University City Science Center will ... summer of 2016, provides Philadelphia-based middle school educators an opportunity for professional development ...
(Date:8/10/2017)... USA (PRWEB) , ... August 09, 2017 , ... ... partnered with four international biomedical optics laboratories — the Wellman Center for Photomedicine, ... Medical Laser Center Lübeck and the Beckman Laser Institute at University of California, ...
(Date:8/10/2017)... ... August 10, 2017 , ... BellBrook Labs announces the ... , an enabling new high throughput screening (HTS) assay to aid researchers in ... debilitating diseases. , Chemical modification of gene expression, also known as epigenetics, is ...
Breaking Biology Technology: