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:5/16/2017)... -- Veratad Technologies, LLC ( www.veratad.com ), an innovative and ... solutions, announced today they will participate as a sponsor ... May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions of ... digital world, defining identity is critical to nearly every ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
(Date:4/13/2017)... 13, 2017 According to a new market research ... Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and ... is expected to grow from USD 14.30 Billion in 2017 to USD ... 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... 12, 2017 , ... They call it the “hairy ball.” ... depiction of a system of linkages and connections so complex and dense that ... computer science at Worcester Polytechnic Institute (WPI) and director of the university’s bioinformatics ...
(Date:10/12/2017)... ... 12, 2017 , ... BioMedGPS announces expanded coverage of SmartTRAK ... module, US Hemostats & Sealants. , SmartTRAK’s US Market for Hemostats and Sealants ... sealants and biologic sealants used in surgical applications. BioMedGPS estimates the market will ...
(Date:10/11/2017)... ... 11, 2017 , ... The CRISPR-Cas9 system has ... and avoiding the use of exogenous expression plasmids. The simplicity of programming this ... gain-of-function studies. , This complement to loss-of-function studies, such as with RNAi ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading provider ... nationwide oncology Clinical Nurse Educator (CNE) network, which will launch ... for communication among health care professionals to enhance the patient ... office staff, and other health care professionals to help women ... cancer. ...
Breaking Biology Technology: