Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




WATER WORLD
Warming temperatures cause aquatic animals to shrink the most
by Staff Writers
London, UK (SPX) Nov 09, 2012


File image.

Warmer temperatures cause greater reduction in the adult sizes of aquatic animals than in land-dwellers in a new study by scientists from Queen Mary, University of London and the University of Liverpool.

The research published in Proceedings of the National Academy of Sciences (PNAS) shows that the body size of marine and freshwater species are affected disproportionately by warmer temperatures. This could have implications for aquatic food webs and the production of food by aquaculture.

The researchers compared the extent to which the adult size of 169 terrestrial, freshwater, and marine species responded to different non-harmful temperatures, in the largest study of its kind.

Summarising the results, co-author Dr Andrew Hirst from Queen Mary's School of Biological and Chemical Sciences, said: "Aquatic animals shrink 10 times more than land-dwellers in species the size of large insects or small fish. While animals in water decrease in size by 5 percent for every degree Celsius of warming, similarly sized species on land shrink, on average, by just half a percent."

The research also demonstrates that the most likely cause of this difference in size is due to the much lower availability of oxygen in water than in air. Warming increases the need for oxygen by organisms on land and in water, however aquatic species have a much harder job meeting this increased demand.

Co-author Dr David Atkinson of the University of Liverpool explains: "To satisfy increased demands for oxygen at higher temperatures, aquatic species have fewer options. Reducing the size at which they mature is their way of balancing oxygen supply and demand."

Lead author Dr Jack Forster also from Queen Mary's School of Biological and Chemical Sciences adds: "Given that fish and other aquatic organisms provide 3 billion people with at least 15 percent of their animal protein intake, our work highlights the importance of understanding how warming in the future will affect ocean, lake and river dwelling species."

.


Related Links
Queen Mary, University of London
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
Australia reef collapse blamed on farming
Brisbane, Australia (UPI) Nov 6, 2012
An "autopsy" performed on Australia's Great Barrier Reef found nutrient-rich runoff from farms caused parts of the reef to collapse, researchers say. Scientists at the University of Queensland in Brisbane took cores from three reef sites and determined corals collapsed between the 1920s and 1950s, NewScientist.com reported. Two of the sites had little coral left after the 1950s, ... read more


WATER WORLD
Moon crater yields impact clues

Study: Moon basin formed by giant impact

NASA's LADEE Spacecraft Gets Final Science Instrument Installed

Astrium presents results of its study into automatic landing near the Moon's south pole

WATER WORLD
More Driving And Imaging At 'Matijevic Hill'

Curiosity Team Switches Back to Earth Time

Survey of 'Matijevic Hill' Continues

Mars Longevity Champ Switching Computers

WATER WORLD
Voyager observes magnetic field fluctuations in heliosheath

New NASA Online Science Resource Available for Educators and Students

'First' Pakistan astronaut wants to make peace in space

Space daredevil Baumgartner is 'officially retired'

WATER WORLD
China to launch manned spacecraft

Tiangong 1 Parked And Waiting As Shenzhou 10 Mission Prep Continues

China to launch 11 meteorological satellites by 2020

China makes progress in spaceflight research

WATER WORLD
Crew Prepares for Spacewalk After Progress Docks

Crew Preparing for Cargo Ship, Spacewalk

Russian cargo ship docks with ISS: official

Packed Week Ahead for Six-Member Crew

WATER WORLD
Ariane 5 is poised for Arianespace's launch with the EUTELSAT 21B and Star One C3 satellites

Ariane 5 orbits EUTELSAT 21B and Star One C3 satellites

Arianespace's heavy-lift Ariane 5 flight is cleared for liftoff with EUTELSAT 21B and Star One C3

NASA's Vehicle Assembly Building Prepared for Multiple Rockets

WATER WORLD
Physicists confirm first planet discovered in a quadruple star system

Planet-hunt data released to public

New Study Brings a Doubted Exoplanet 'Back from the Dead'

New small satellite will study super-Earths for ESA

WATER WORLD
HTC and Apple reach global settlement

Nanocrystals and nickel catalyst substantially improve light-based hydrogen production

Apple still perched high, but seems vulnerable

Radar Production Readiness Review For Indonesia National Air Space Surveillance Program Completed




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal 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