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




WATER WORLD
Plastic waste is a hazard for subalpine lakes too
by Staff Writers
London, UK (SPX) Oct 09, 2013


These are scanning electron microscope images of degraded plastic particles showing examples of surface textures on sampled plastic particles. Credit: Current Biology, Imhof et al.

Many subalpine lakes may look beautiful and even pristine, but new evidence suggests they may also be contaminated with potentially hazardous plastics. Researchers say those tiny microplastics are likely finding their way into the food web through a wide range of freshwater invertebrates too.

The findings, based on studies of Italy's Lake Garda and reported on October 7th in Current Biology, a Cell Press publication, suggest that the problem of plastic pollution isn't limited to the ocean.

"Next to mechanical impairments of swallowed plastics mistaken as food, many plastic-associated chemicals have been shown to be carcinogenic, endocrine-disrupting, or acutely toxic," said Christian Laforsch of the University of Bayreuth in Germany. "Moreover, the polymers can adsorb toxic hydrophobic organic pollutants and transport these compounds to otherwise less polluted habitats. Along this line, plastic debris can act as vector for alien species and diseases."

The researchers chose Lake Garda as a starting point for investigating freshwater contamination with micro- and macroplastics because they expected it to be less polluted given its subalpine location. What they found was a surprise: the numbers of microplastic particles in sediment samples from Lake Garda were similar to those found in studies of marine beach sediments.

The size ranges of microplastics found by Laforsch's team suggested that they might find their way into organisms living in the lake. Indeed, the researchers showed that freshwater invertebrates from worms to water fleas will ingest artificially ground fluorescent microplastics in the lab.

The findings in Lake Garda come as bad news for lakes generally, with uncertain ecological and economic consequences. "The mere existence of microplastic particles in a subalpine headwater suggests an even higher relevance of plastic particles in lowland waters," Laforsch said. He recommends more research and standardized surveillance guidelines to control for microplastic contamination in freshwater ecosystems, as is already required for marine systems.

The public can do its part by putting trash where it belongs. The shape and type of plastic particles found in the study indicate that they started as larger pieces of plastic, most likely originating from post-consumer products.

Current Biology, Imhof et al.: "Contamination of beach sediments of a subalpine lake with microplastic particles"

.


Related Links
Cell Press
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
Improving water security with blue, green, and gray water
Washington DC (SPX) Oct 09, 2013
Agriculture is one of the most insatiable consumers of dwindling water resources around the world. And food production will need to increase by about 70% over the next 35 years to meet the needs of a growing population. Crops aren't creating the only demands; agriculture will face competition for water from cities, industries, and recreation. With limited water and the increasing number of ... read more


WATER WORLD
NASA's moon landing remembered as a promise of a 'future which never happened'

Russia could build manned lunar base

China unveils its first and unnamed moon rover

Mission to moon will boost research and awareness

WATER WORLD
ESA's test rover begins exploring Atacama Desert

Mars Hand Lens Imager Sends Ultra High-Res Photo From Mars

Making Martian clouds on Earth

NASA Mars mission escapes government shutdown, will launch

WATER WORLD
NASA ban on Chinese scientists 'inaccurate': lawmaker

Naval Institute History Conference: From Mercury to the Shuttle

Samsung to break ground at US research center

Non-Orbiting Space Junk

WATER WORLD
China criticises US space agency over 'discrimination'

NASA ban on Chinese scientists 'inaccurate': lawmaker

What's Next, Tiangong?

Onward and upward as China marks 10 years of manned spaceflight

WATER WORLD
Aerojet Rocketdyne Thrusters Help Cygnus Spacecraft Berth at the International Space Station

First CASIS Funded Payloads Berthed to the ISS

Unmanned cargo ship docks with orbiting Space Station

New space crew joins ISS on Olympic torch mission

WATER WORLD
Sunshield preparations bring Gaia closer to deep-space Soyuz launch

SES-8 Arrives At Cape Canaveral For SpaceX Falcon 9 Launch

Spaceport Colorado and S3 Sign Memorandum of Understanding

Milky Way-mapping Gaia receives its sunshield

WATER WORLD
Lonely planet without a star discovered wandering our galaxy

Researchers Find that Bright Nearby Double Star Fomalhaut Is Actually a Triple

NASA Space Telescopes Find Patchy Clouds On Exotic World

Blurring the lines between stars and planets

WATER WORLD
Ultrasound system gives virtual feeling of objects in mid-air

Himawari and Mitsubishi Electric Complete Facilities For Weather Satellite Ops

Disney Research develops algorithm for rendering 3-D tactile features on touch surfaces

World's Largest Solar Sail, Sunjammer, Completes Test




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