Welcome to FIS   Sponsored By
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


Radiation signs in California kelp. (Photo: YouTube/MrKJKat /Stock File/FIS)

Kelp off California coast still contains radiation from Japan

Click on the flag for more information about United States UNITED STATES
Tuesday, April 10, 2012, 00:50 (GMT + 9)

Radioactivity from Japan’s stricken Fukushima Daiichi nuclear power plant reached the North American west coast in just days after the 11 March 2011 earthquake and tsunami.

California State University, Long Beach (CSULB) marine biology professors Steven L Manley and Christopher G Lowe have examined kelp samples and determined that iodine 131 was present in California kelp more than a month after the tsunami, partly because rainstorms helped deposit the airborne contaminants into the ocean.

Their findings appear in an article, “Canopy-Forming Kelps as California’s Coastal Dosimeter: 131I from Damaged Japanese Reactor Measured in Macrocystis pyrifera,” in the online edition of the journal Environmental Science & Technology.

The team measured significant, although most likely non-harmful levels of radioactive iodine in the giant kelp Macrocystis pyrifera, which may have affected certain fish that eat it because fish have a thyroid system that utilizes iodine.

They do not, however, know whether cesium 137 was present in the kelp – and cesium 137 has a half-life of 30 years instead of eight days of iodine.

Manley found iodine in kelp blades from Orange County. He then had Lowe, director of the CSULB Shark Lab and an expert in marine fisheries, ask his graduate students to also obtain kelp samples.
 
California samples contained varying low levels of iodine 131, but a closely related kelp in Alaska, Macrocystis integrifolia, had none, possibly because  it could have decayed away and it was not detected, or because the plume never did get up there in a high enough concentration, Manley explained.

“Even though we detected low levels, it still got into the environment and we don’t know anything about the other radioisotopes like cesium 137, which stays around much longer than iodine. In fact, the values that we reported for iodine probably underestimate what was probably in there. It could be two to three times more because we were just sampling the surface tissue; the biomass estimates were based on canopy tissue and a lot of kelp biomass is underneath,” he added.

Manley hopes to engage CSU’s Coastal Affairs, Science and Technology (COAST) consortium of all CSU campus marine biology programmes in follow-up studies, to organize a standardized monitoring system to get tissue and background samples every few months so that if another event occurs, the team will have some baseline information.

By Natalia Real
[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Russian Federation
Oct 29, 08:00 (GMT + 9):
IN BRIEF - Crisis in the Pollock Catchers Association: Russian Fishery Company 'sailed to court'
European Union
Oct 29, 08:00 (GMT + 9):
The fisheries Brexit negotiation must exclude the privileges that the Common Fisheries Policy has granted to the UK since its inception
Mauritania
Oct 29, 05:00 (GMT + 9):
CEPESCA publishes the images of the rescue yesterday by the F/V 'Riodomar IV' of 215 immigrants
Maldives
Oct 29, 05:00 (GMT + 9):
Media Statement from Government of Maldives on the status of Indian Ocean yellowfin tuna stock (video)
European Union
Oct 29, 01:30 (GMT + 9):
Otros Medios | Industrias Pesqueras: La EUFA demanda que el acuerdo de ‘brexit’ acabe con los 'privilegios' de Reino Unido en la PPC
Russian Federation
Oct 29, 01:00 (GMT + 9):
Federal Agency for Fishery report on salmon season and roes
Spain
Oct 29, 00:50 (GMT + 9):
Other Media | Alimarket: Carrefour increases its sales by 7.5% from January to September
European Union
Oct 29, 00:00 (GMT + 9):
Other Media | La Voz de Galicia: Brussels proposes new cuts for hake, monkfish and Iberian rooster
Russian Federation
Oct 28, 20:00 (GMT + 9):
As of October 26, Russian fishermen have caught more than 4.2 million tonnes
Norway
Oct 28, 19:00 (GMT + 9):
Fish Pool Salmon Price Status Report for week 44
Solomon Islands
Oct 28, 17:00 (GMT + 9):
Operation Kurukuru air surveillance on Illegal, Unregulated and Unreported (IUU) fishing
Japan
Oct 28, 16:30 (GMT + 9):
Auction prices for common squid (surume ika, todarodes pacificus) frozen on board │ Ogi market (until oct-23)
United States
Oct 28, 09:00 (GMT + 9):
What threat do microplastics, a.k.a. ‘ocean hitchhikers’, pose to aquaculture?
United States
Oct 28, 07:00 (GMT + 9):
PRESS RELEASE - NWAA STATEMENT REGARDING PATAGONIA AND THE WILD FISH CONSERVANCY (video)
France
Oct 28, 05:50 (GMT + 9):
Mediterranean bluefin tuna fishery now MSC certified



Lenguaje
FEATURED EVENTS
  
TOP STORIES
The course of pelagic fishing week 43
Norway This autumn's best NVG herring week and less mackerel from the North Sea Mackerel: We received significantly smaller quantities of mackerel than in the previous three weeks. A total of 23,100 to...
Statistics │ Import by origin │Crab │ September 2020
South Korea Source: FIS.com | Click to enlarge it [email protected] www.fis.com...
Tuna exports to Italy soar in September
Viet Nam NDO/VNA – Vietnam’s tuna exports to Italy soared by 8,599% last month over the same period last year. This staggering increase transformed Italy into Vietnam's largest tuna market in the EU in ...
Coast Guard saves sinking fishing vessel near Icy Bay, Alaska
United States KODIAK, Alaska — The Coast Guard assisted a fishing vessel taking on water and disabled, six miles south of Icy Bay, Alaska, Wednesday. A Coast Guard Air Station Sitka MH-60 Jayhawk helicopte...
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation - Wartsila Group Headquarters
ITOCHU Corporation - Headquarters
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
AquaChile S.A. - Group Headquarters
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods, Inc
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO - Food and Agriculture Organization - Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Brim ehf (formerly HB Grandi Ltd) - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Mowi ASA (formerly Marine Harvest ASA) - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands | Headquarters
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation - Headquarters
Cooke Inc. - Group Headquarters
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart | Wal-Mart Stores, Inc. (Supermarket) - Headquarters
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2020 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER