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
Chile
Oct 23, 23:50 (GMT + 9):
Liquefied gas benefits in salmon industry stressed
Canada
Oct 23, 23:30 (GMT + 9):
More than USD 95,000 granted for advanced halibut tagging
United States
Oct 23, 22:50 (GMT + 9):
Conservationists to sue NMFS over protection of pinto abalone
Argentina
Oct 23, 22:00 (GMT + 9):
Seafood export volume drops
United States
Oct 23, 04:00 (GMT + 9):
Salmon importer joins Japanese giant firm SNG subsidiary
Spain
Oct 23, 03:20 (GMT + 9):
Shipowners require 'level playing field' for all fleets fishing for sharks
Peru
Oct 23, 02:20 (GMT + 9):
Industrial anchovy fishing season opening faces risks
European Union
Oct 23, 02:10 (GMT + 9):
IN BRIEF - Eating fish may make antidepressants more effective, study says
United States
Oct 23, 02:10 (GMT + 9):
IN BRIEF - Innovative aquaculture program grows oysters
United Kingdom
Oct 23, 02:10 (GMT + 9):
IN BRIEF - Fish switching genders studied by Cambridge scientist
Republic of Ireland
Oct 23, 02:10 (GMT + 9):
IN BREIF - Long-range surveillance gear targets fish poachers
European Union
Oct 23, 02:10 (GMT + 9):
IN BRIEF - Greenpeace Video Shows Endangered Species Caught by Floating Fish Traps Share Tweet
United States
Oct 23, 02:00 (GMT + 9):
IN BRIEF - Maritime Broadband Opens Office in Greece to Service Growing International Demand for C-Bird VSAT Communications Solution
Australia
Oct 23, 02:00 (GMT + 9):
IN BRIEF - Pacific nations agree to historic tuna fishery pact to protect local industries
United States
Oct 23, 02:00 (GMT + 9):
IN BREIF - Researchers, shrimpers look for black gill shrimp in Georgia



Lenguaje
FEATURED EVENTS
  
TOP STORIES
DiCaprio Foundation donates USD 2 million to combat overfishing, ocean conservation
United States The Leonardo DiCaprio Foundation provided USD 2 million to Oceans 5, an international funders’ collaborative dedicated to stopping overfishing and establishing marine reserves in the world’s five oceans.
Rapid shellfish toxins test may be soon available
Australia A new project to develop a rapid shellfish toxin screen test is underway at the University of Tasmania.
Conservationists condemn Malta’s request to raise bluefin tuna quota
Malta Malta's government’s intention to be granted bluefin tuna quota increase has not been welcomed by conservation organization WWF and by the coalition of Maltese NGOs Fish4tomorrow.
Large scale commercial fisheries restricted in Beaufort Sea
Canada The federal government announced a new Arctic fisheries management that will protect a large area of Canada's Beaufort Sea from large-scale commercial fishing and ensure a sustainable resource for local communities.
 
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 (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Pescanova, S.A. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Limited
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 ehf - 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-
Grupo Calvo - Luis Calvo Sanz, S.A. (Group 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 - 2014 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER