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


In mid August there will be another research survey to update data on the 'dead zone.' (Photo: Nancy Rabalais/LUMCON/NOAA)

This year's hypoxic zone is fourth-smallest recorded

Click on the flag for more information about United States UNITED STATES
Monday, July 30, 2012, 22:40 (GMT + 9)

National Oceanic and Atmospheric Administration- (NOAA) supported scientists have found the size of this year’s Gulf of Mexico oxygen-free ‘dead zone’ to be the fourth-smallest since mapping of the annual hypoxic, or oxygen-free area began in 1985. Measuring approximately 2,889 sqmi, the 2012 area is slightly larger than Delaware.

The survey also found a patchy distribution of hypoxia across the Gulf differing from any previously recorded. This is in stark contrast to last year, when flood conditions, carrying large amounts of nutrients, resulted in a dead zone measuring 6,770 sqmi.

The last time the dead zone was this small was in 2000 when it measured 1,696 sqmi.

“A smaller area was expected because of drought conditions and the fact that nutrient output into the Gulf this spring approached near the 80-year record low,” said Nancy Rabalais, PhD, executive director of the Louisiana Universities Marine Consortium (LUMCON), who led the survey cruise.

“What wasn’t expected was how the scattered distribution of hypoxia areas differed from any others documented in the past. Confirmed, however, is the strong relationship between the size of the hypoxic zone and the amount of fresh water and nutrients carried to the Gulf by the Mississippi River.”

The smallest recorded dead zone to date measured 15 sqmi in 1988. The largest dead zone, also called a hypoxic zone, measured to date occurred in 2002 encompassing more than 8,400 sqmi.

The average size of the dead zone over the past five years has been 5,684 sqmi, more than twice the 1,900 sqmi-goal set by the Gulf of Mexico/Mississippi River Watershed Nutrient Task Force.

Hypoxia is fuelled by nutrient runoff from agricultural and other human activities in the Mississippi River watershed, which stimulates an overgrowth of algae that sinks, decomposes and consumes most of the life-giving oxygen supply in bottom waters.

The hypoxic zone off the coast of Louisiana and Texas forms each summer and threatens valuable commercial and recreational Gulf fisheries. In 2010, the dockside value of commercial fisheries in the Gulf was USD 639 million.

Earlier this summer, NOAA-sponsored forecast models had issued conflicting forecasts for the hypoxic zone, ranging from a small 1,197 sqmi to a moderate 6,213 sqmi. The forecast of the larger zone hinged on the possibility that organic matter stored in Gulf sediments from large algal blooms during the 2011 flood would act as an additional carbon source for the development of hypoxia this year.

The small size of this year’s hypoxic zone suggests only a limited role for this “carryover effect” in hypoxia formation under the current low flow conditions.

Texas A&M will be conducting a follow-up cruise in mid-August to provide an update.

editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Thailand
May 27, 23:00 (GMT + 9):
Thai FDA collects raw fish meat for tests
Malta
May 27, 22:40 (GMT + 9):
Fish farm cages in St Thomas Bay are illegal
Argentina
May 27, 22:20 (GMT + 9):
Illegal fishing appears in dialogue with China
Chile
May 27, 21:50 (GMT + 9):
Camanchaca lost USD 2.7 million in the first quarter
Spain
May 27, 21:40 (GMT + 9):
World's first ship designed to suit discard ban
Worldwide
May 27, 21:30 (GMT + 9):
IOTC adopts harvest regulations for skipjack in Indian Ocean
United States
May 27, 20:00 (GMT + 9):
IN BRIEF - SFP announces new FIP rating system
United Kingdom
May 27, 19:00 (GMT + 9):
IN BRIEF - IPNLF applauds harvest control rule for Indian Ocean skipjack tuna stocks
United Kingdom
May 27, 03:00 (GMT + 9):
IN BRIEF - Indian Ocean tuna commission reaches landmark decision on harvest control rules
Viet Nam
May 27, 03:00 (GMT + 9):
EU-funded project to boost Vietnamese shrimp production
United States
May 27, 02:30 (GMT + 9):
Imported catfish inspection rollback raises controversies
Spain
May 27, 01:30 (GMT + 9):
Govt and artisanal fishermen plan bluefin tuna fishery in Mediterranean
Australia
May 27, 00:30 (GMT + 9):
IN BRIEF - New technology to stop massive fish stock losses on farms being developed in Townsville
United Kingdom
May 27, 00:30 (GMT + 9):
IN BRIEF - MEP and Grimsby MP say staying in Europe would benefit fishing industry and its supply chain
New Zealand
May 27, 00:30 (GMT + 9):
IN BRIEF - Sanford almost doubles first-half profit



Lenguaje
FEATURED EVENTS
  
TOP STORIES
HSMI evidence detected in farmed salmon
Canada A team of international researchers has diagnosed a potential heart and skeletal muscle inflammation in farmed Atlantic salmon samples collected from a BC aquaculture facility in 2013-2014.
EU puts off deadline for Thailand to address illegal fishing
Thailand The EU has given Thailand another six months to end illegal fishing over a year after Brussels threatened Bangkok with a ban on Thai seafood product import.
Sturgeon stock decline urgently needs stopping, WWF warns
Worldwide A new WWF report warns that in the past three decades global catches of sturgeons and paddlefishes have dropped by over 99 per cent.
Fishing vessel fleet monitoring equipment installation sped up
New Zealand New Zealand's Government intends to speed up the rollout of monitoring equipment on commercial fishing vessels.
 
Maruha Nichiro Corporation
Nichirei Corporation -Headquarter-
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation -Wartsila Group Headquarter-
ITOCHU Corporation -Headquarter-
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Nueva Pescanova, S.L. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
Blue Continent Products (Pty) Ltd - (Oceana Group Limited)
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. -Headquarter-
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.
Food Project (Siam) Co., 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
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Omega Protein Corporation -Headquarter-
Marona S.A.
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. -Headquarter-
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
CJ Corporation  -Holding Headquarter-
Greenpeace International - The Netherlands
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
Ocean Trawlers Group - Ocean Trawlers HK Ltd.
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation -Headquarter-
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart / Wal-Mart Stores, Inc. (Supermarket) -Headquarter-
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
INVE Group - Head Office
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
Morpol ASA - Group Headquarters
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2016 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER