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


Ocean acidification. (Photo Credit: UK Ocean Acidification Research Programme Knowledge Exchange Office)

Acidic oceans will transform ecosystems

WORLDWIDE
Wednesday, July 10, 2013, 00:30 (GMT + 9)

Ocean acidification may create an impact similar to extinction on marine ecosystems, according to a study released today by the University of California, Davis.

The study, published online in the journal Proceedings of the National Academy of Sciences, found that ocean acidification can degrade not only individual species, as past studies have shown, but entire ecosystems. This results in a homogenized marine community, dominated by fewer plants and animals.

"The background, low-grade stress caused by ocean acidification can cause a whole shift in the ecosystem so that everything is dominated by the same plants, which tend to be turf algae," said lead author Kristy Kroeker, a postdoctoral researcher at the Bodega Marine Laboratory at UC Davis.

"In most ecosystems, there are lots of different colourful patches of plants and animals -- of algae, of sponges, of anemones," Kroeker said. "With ocean acidification, you lose that patchiness. We call it a loss of functional diversity; everything looks the same."

In the waters surrounding Castello Aragonese, a 14th century castle off the coast of Italy, volcanic vents naturally release bubbles of carbon dioxide gas, creating different levels of acidity among the marine-animal and plant communities there. These gradients of acidity gave the scientists a glimpse of what a future marked by increasingly acidic ocean waters could look like, and how the creatures and plants living in those environments may react to it.

The researchers selected three reef zones--of low, high and extremely high acidity, representing world ocean conditions for the present day, 2100 and 2500, respectively. Then they removed animals and vegetation from the rocks there. Every few months for three years, Kroeker dived to the study plots to photograph them and watch how the plots in each zone recovered.

By examining how recovery differed among zones, the study found that acidic water reduced the number and variety of species. In the non-acidic plots, many different plants and animals, including turf algae, would colonize and grow. Calcareous species, such as sea urchins and snails, would then eat them, allowing for variety through time.

However, in both the high and extremely high acidic plots, fleshy turf algae increased steadily and overtook the zones, as the urchins and other grazers were either not present or did not graze on the algae while in these zones.

Calcareous grazers play key roles in maintaining the balance within marine ecosystems. They are also considered among the most vulnerable species to ocean acidification.

"Our research is showing that if the role of these grazers changes with ocean acidification, you might expect to see cascading effects of the whole ecosystem," Kroeker said. "If the pattern holds for other calcareous grazers, this has implications for other ecosystems, as well."

[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United States
Dec 6, 07:00 (GMT + 9):
IN BRIEF - FDA: Phil-Am Trading, Inc. Recalls Phil-Am Smoked Mackerel Because of Possible Health Risk
United States
Dec 6, 06:00 (GMT + 9):
IN BRIEF - FDA: Royal Seafood Baza, Inc. Recalls Various Ready to Eat Herring Products | Possible Health Risk
China
Dec 6, 02:20 (GMT + 9):
China’s disappearing fish suggest bigger food-safety concerns
United States
Dec 6, 02:00 (GMT + 9):
Fishing ban in international Arctic waters remains elusive
Japan
Dec 6, 01:10 (GMT + 9):
Volunteer group continues checking fish off Fukushima as radiation levels drop
China
Dec 6, 00:40 (GMT + 9):
U.S. Coast Guard wants a bigger role in patrolling the disputed waters
Worldwide
Dec 6, 00:30 (GMT + 9):
United Nations to vote World Tuna Day this week
Chile
Dec 5, 23:50 (GMT + 9):
More than 100 artisanal shipowners complain against the Undersecretariat of Fisheries
Chile
Dec 5, 23:40 (GMT + 9):
Marine Harvest would add 500 salmon
India
Dec 5, 23:00 (GMT + 9):
IN BRIEF - No formalin in imported fish, says Mizoram health department
United Kingdom
Dec 5, 23:00 (GMT + 9):
IN BRIEF - Mystery as thousands of fish wash up on Cornish beach
Argentina
Dec 5, 23:00 (GMT + 9):
Govt formalizes reimbursement elimination by decree but refunds rise
United Kingdom
Dec 5, 22:50 (GMT + 9):
IN BRIEF - Exposed: the abusive pirates trying to avoid fishing laws
Worldwide
Dec 5, 22:40 (GMT + 9):
Only 9.1 per cent women’s representation at seafood industry senior level
United States
Dec 5, 21:40 (GMT + 9):
Indigenous seafood consumption 15 times higher per capita than national averages



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Pingtan adds two new jiggers to its fleet
China Global fishing company Pingtan Marine Enterprise Ltd. has completed construction on its two squid jigging vessels, which are ready to depart for their fishing designation.
Cadiz Port Authority grants sole farming centre permit
Spain The Port Authority of the Bay of Cadiz has granted the firm Epic Aqua Solea Acuicultura SL an administrative permission for the construction of the first phase of an intensive sole farming centre in El Puerto de Santa Maria.
Maersk Line strengthens growth strategy through Hamburg line acquisition
Denmark Maersk Line is to acquire German container shipping line Hamburg Süd after reaching an agreement with Oetker Group in an attempt to develop its growth strategy and increase transport volumes.
USD 36 million seafood smuggling operation discovered
China A case involving 3,000 tons of smuggled frozen seafood worth USD 36 million was discovered and several suspects are being prosecuted, as it was reported by the customs authority.
 
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