Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




WATER WORLD
Phytoplankton and zooplankton biomass are expected to decrease
by Staff Writers
Basque Region, Spain (SPX) May 09, 2014


Globally, it is estimated that the sea temperature rise will cause phytoplankton and zooplankton biomass to decrease by 6% and 11% respectively.

It is estimated that ocean temperature warming will cause phytoplankton and zooplankton biomass to decrease by 6% and 11% respectively by the end of the century. A lower amount of these two main elements in the marine food web could reduce fish biomass in certain regions. These are some of the main conclusions drawn by research led by Azti-Tecnalia within the European MEECE project and recently published in the prestigious Global Change Biology Journal.

Sea surface temperature is expected to increase 2 + C on average globally by 2080-2100. Some of the consequences of this increase include changes in ocean circulation and higher water column stratification, thus affecting the nutrient availability for the growth of marine phytoplankton.

The research team led by Azti-Tecnalia points out the effects to primary production (phytoplankton mass produced annually by photosynthetic single-celled organisms that are suspended in the ocean), and to secondary production (zooplankton biomass, made up of small animal organisms that feed mainly on phytoplankton and which fish feed on).

Globally, it is estimated that the sea temperature rise will cause phytoplankton and zooplankton biomass to decrease by 6% and 11% respectively. This suggests that there will be a negative amplification of climate change, which will spread through the marine food web, i.e. zooplankton biomass will decrease more than phytoplankton. This process will take place mainly in tropical oceans, which cover 47% of the global ocean surface.

Differences by region
Phytoplankton and zooplankton reduction, however, will affect different regions in different ways. In the seas in Central and Southern Europe (North Sea and temperate Northeast Atlantic), higher thermal stratification of the ocean water layers and, consequently, a lower presence of nutrients for phytoplankton to grow, will reduce primary production; and in the Baltic, Barents and Black Sea phytoplankton production is expected to increase.

Azti-Tecnalia researcher Guillem Chust, leader of the scientific work and main author of the paper, says that "in the ocean regions that lose more phytoplankton and zooplankton biomass, that is, with a negative amplification, fish biomass may also decrease dramatically, especially pelagic species (i.e. those living the water column, excluding the seabed)".

"Climate regulation will also be affected negatively by the primary and secondary production decrease globally," Chust explains, "because, as there will be less phytoplankton, absorption of CO2 from the atmosphere by the oceans will be lower, as plankton is responsible for half of the planet's photosynthetic activity. This in turn will reduce the ocean's capacity to regulate the climate".

MEECE, a project to understand marine ecosystems
The MEECE project is part of the EU's Seventh Framework Programme and is coordinated by the Plymouth Marine Laboratory (UK), with 22 European partners. MEECE's scientific challenge involves understanding how marine ecosystems work and how they are affected by climate change, ocean acidification and human activities.

Within this initiative, AztiTecnalia observes the ecosystem, studying the processes and developing models to simulate future changes, while proposing measures allowing for the anticipation and minimisation of such changes. All the information on the project can be found here.

.


Related Links
Basque Research
Water News - Science, Technology and Politics






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





WATER WORLD
$200 Bird Scaring Line for Trawlers Can Cut Albatross Deaths by over 90%
New York NY (SPX) May 09, 2014
The sight of seabirds following trawlers in order to feast from discarded fish is a common maritime sight, but each year many thousands of seabirds are killed by overhanging cables or in nets. New research in Animal Conservation assesses mortality figures from South Africa to show that a simple bird scaring line can reduce the mortality rate by over 90%. The research compiled data from fiv ... read more


WATER WORLD
At least 36 immigrants die in Libya shipwreck: navy

Obama pledges help for tornado victims in US south

Aid boom spurs Afghans to flock to landslide village

Years of hardship loom in typhoon-ravaged Philippines

WATER WORLD
Appeal court revives Oracle-Google copyright battle

Radio waves affect migrating birds: study

HP steps up in cloud with $1 bn investment

Lockheed assembles satellite propulsion module

WATER WORLD
Phytoplankton and zooplankton biomass are expected to decrease

Native algae species to blame for 'rock snot' blooms in rivers worldwide

$200 Bird Scaring Line for Trawlers Can Cut Albatross Deaths by over 90%

Huge strides in global water and sanitation: UN

WATER WORLD
Greenland melting due equally to global warming, natural variations

International team maps nearly 200,000 global glaciers in quest for sea rise answers

Melting an entire iceberg with a hot poker

Study explains why polar bears are fat yet healthy

WATER WORLD
Study says pesticides to blame for honeybee colony collapse

Rising CO2 poses significant threat to human nutrition

As CO2 levels rise, some crop nutrients will fall

Rice or wheat? How grains define cultural identity

WATER WORLD
Yellowstone Geyser Eruptions Mostly Influenced By Internal Processes

One dead, 30 injured in southern Pakistan quakes

Strong quake shakes Mexico, breaks bridge

New insight may help predict volcanic eruption behavior

WATER WORLD
France to deploy 3,000 soldiers in Sahel

No US troops to aid search for Nigeria schoolgirls: Hagel

Angola calls for rebalancing of ties during Chinese premier's visit

Hotspots of climate change impacts in Africa

WATER WORLD
Rocks lining Peruvian desert pointed to ancient fairgrounds

Autism risk is half genetic, half environmental: study

ASU scientists take steps to unlock the secrets to the fountain of youth

DNA 'Sat Nav' directs you to your ancestor's home




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.