Subscribe to our free daily newsletters
. Earth Science News .




Subscribe to our free daily newsletters



DISASTER MANAGEMENT
Impact of the Fukushima accident on marine life, five years later
by Staff Writers
Pensacola FL (SPX) Oct 20, 2016


One study cited in the article concluded that the quick radioactive decay of the iodine-131 (one of the main isotopes, initially) and the confinement of the fallout to only some species and areas close to the power station were contributing factors to the low threshold exposure.

Five years ago, the largest single release of human-made radioactive discharge to the marine environment resulted from an accident at the Fukushima Daiichi Nuclear Power Plant in Japan. Approximately 80 percent of the fallout happened over the Pacific Ocean. Jordi Vives i Batlle of the Belgian Nuclear Research Centre explores the environmental consequences in the marine environment of the accident in an article published in the October issue of Integrated Environmental Assessment and Management.

He outlines the status of current research about the impact of the fallout on plant and animal life and what remains to be done as the radioactivity continues to spread. His article is part of a series of invited commentaries from international experts on "Lessons Learned and Consequences of the Fukushima Daiichi Nuclear Power Plant Accident, 5 Years Later."

Overall, the radioactivity levels in the marine biota near Fukushima were lower than predicted by some early studies immediately following the accident, and exposures were too low for acute effects at the population level to be observed in marine organisms ranging from microalgae to mollusks to fish.

One study cited in the article concluded that the quick radioactive decay of the iodine-131 (one of the main isotopes, initially) and the confinement of the fallout to only some species and areas close to the power station were contributing factors to the low threshold exposure.

However, more recent studies have shown variable levels in individual fish, though they too confirm that population-level effects have not been observed.

The variability in fish has numerous confounding factors - the fishes' position in the food chain, where they live in the water column and their migratory patterns, to name a few.

Additionally, there is a hypothesis that sediments have delayed the dispersal of the radioactive substances. Benthic fish, those at the bottom of the ocean, are more exposed to contaminated sediments and receive higher dose rates than pelagic fish living in the higher levels of the water column.

Vives i Batlle concludes that additional research is still required to fully understand the long-term effects that the fallout has had and that there is a need to continue studying the few "hotspots" very near the power station.

The long-term fate of the contamination is still unknown, and information about how much radiation is stored in sediments and how much is still leaking from delayed sources, such as groundwater, has yet to be quantified.

The research available so far on the risk to the marine environment is encouraging, but key research questions remain unanswered, signaling the direction for future investigations.


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
Society of Environmental Toxicology and Chemistry
Bringing Order To A World Of Disasters
A world of storm and tempest
When the Earth Quakes






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

Previous Report
DISASTER MANAGEMENT
Melting Greenland ice threatens to expose Cold War waste
Copenhagen (AFP) Sept 26, 2016
A snow-covered former US army base in Greenland - dubbed "a city under ice" - could leak pollutants into the environment as the climate changes, raising difficult questions over who is responsible for a clean-up. In 1959, US army engineers began constructing a futuristic project in northwestern Greenland that might as well have been lifted from a Cold War spy movie. A network of tunnel ... read more


DISASTER MANAGEMENT
Impact of the Fukushima accident on marine life, five years later

Haiti hurricane victims lose hope of receiving aid

Power impact from Matthew nowhere near Hurricane Sandy

UN worried over attacks on aid convoys in hurricane-hit Haiti

DISASTER MANAGEMENT
Pushing the boundaries of magnet design

Polymer breakthrough to improve things we use everyday

Efficiency plus versatility

Achieving ultra-low friction without oil additives

DISASTER MANAGEMENT
Sharks are beautiful, diver says despite narrow escape

Ocean warning for Pacific's Melanesia

In drought, Los Angeles grapples with water-guzzling rich

Study: Bait worms a surprisingly valuable marine resource

DISASTER MANAGEMENT
Scientists launch unprecedented Antarctic research mission

Future of Antarctic marine protected at risk

Antarctica is practically defined by ice. What happens when it melts?

New permafrost map shows regions vulnerable to thaw, carbon release

DISASTER MANAGEMENT
Model predicts spread of harmful plant pathogen around the globe

Plants actively direct their seeds via wind or water towards suitable sites

Small-scale agriculture threatens the rainforest

Massive US health tab for hormone-disrupting chemicals

DISASTER MANAGEMENT
Millions in Philippines on alert for super typhoon

Honduras alert over heavy rains

Super typhoon smashes northern Philippines

Vietnam floods kill 25 as new typhoon approaches

DISASTER MANAGEMENT
Mozambique peace talks resume after negotiator's murder

20 dead in Pygmy-Bantu caterpillar clashes in DR Congo

Mali governor visits troubled region for first time in years

Three Burkinabe troops killed in attack near Mali border

DISASTER MANAGEMENT
Female chimpanzees don't fight for 'queen bee' status

New tools identify key evolutionary advantages from ancient hominid interbreeding

Capuchin monkey observed making stone flakes in Brazil

Wild chimpanzee mothers teach young to use tools, video study confirms




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






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - 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. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. 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