Navigation Links
The biomass of ocean mesopelagic fish is 10 times higher than estimated

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
Elhuyar Fundazioa

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:
(Date:5/9/2016)... , UAE, May 9, 2016 ... it comes to expanding freedom for high net worth ... Even in today,s globally connected world, there is still ... system could ever duplicate sealing your deal with a ... second passports by taking advantage of citizenship via investment ...
(Date:4/28/2016)... , April 28, 2016 First quarter 2016: ... up 966% compared with the first quarter of 2015 ... SEK 589.1 M (loss: 18.8) and the operating margin was 40% ... 0.32) Cash flow from operations was SEK 249.9 M ... revenue guidance is unchanged, SEK 7,000-8,500 M. The operating ...
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial spectrophotometers and ... and the 6000i models are higher end machines that use the more unconventional z-dimension ... light beam from the bottom of the cuvette holder. , FireflySci has developed ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” Partnering ... retention in this eBook by providing practical tips, tools, and strategies for clinical ...
(Date:6/23/2016)...   Boston Biomedical , an industry leader ... target cancer stemness pathways, announced that its lead ... Designation from the U.S. Food and Drug Administration ... gastroesophageal junction (GEJ) cancer. Napabucasin is an orally ... stemness pathways by targeting STAT3, and is currently ...
(Date:6/23/2016)... 23, 2016 A person commits a crime, and ... to track the criminal down. An outbreak of ... Drug Administration (FDA) uses DNA evidence to track down the ... Sound far-fetched? It,s not. The FDA has increasingly used a ... of foodborne illnesses. Put as simply as possible, whole genome ...
Breaking Biology Technology: