Welcome to FIS   Sponsored By
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
Norway
May 25, 23:10 (GMT + 9):
Norwegian salmon hikes led by supply drop and demand growth
Spain
May 25, 23:00 (GMT + 9):
ARVI hope that the delivery of FEMP funds will be unblocked
United States
May 25, 22:00 (GMT + 9):
Eating more seafood could speed up pregnancy
United Kingdom
May 25, 20:20 (GMT + 9):
New eDNA method presented to monitor aquatic diversity
Argentina
May 25, 20:00 (GMT + 9):
INIDEP recommended closing the illex squid fishery
United States
May 25, 19:50 (GMT + 9):
First squid fishery to attain MSC standard
United States
May 25, 19:50 (GMT + 9):
Invasive seaweed could affect fish behaviour
Worldwide
May 25, 19:00 (GMT + 9):
New study: the octopus could have an extraterrestrial origin?
Chile
May 25, 03:00 (GMT + 9):
Patagonian salmon price grows and scares Nordic investors
United Kingdom
May 25, 02:40 (GMT + 9):
Post Brexit fishing policy does not seem to stop fishing investments
Spain
May 25, 01:00 (GMT + 9):
Spanish oceanographic vessel starts fisheries research in the Grand Banks of Newfoundland
Norway
May 25, 00:30 (GMT + 9):
Cermaq achieves high survival rates in Q1, with less antibiotics
Taiwan
May 24, 23:40 (GMT + 9):
Taiwanese fishing industry labour abuse continue, Greenpeace claims
Chile
May 24, 23:30 (GMT + 9):
Navy makes statement on salmon dumping ruling
Norway
May 24, 22:00 (GMT + 9):
Salmon price status at week 20



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Tuna plant restarts operations thanks to Chinese funding
Vanuatu A tuna fish processing plant, located on the outskirts of Port Vila, which has been inactive for over a decade, is to restart production thanks to the USD 9.01 million dollar funding from a Chinese company.
Lobster exporters fear China's retaliation for tariff implementation
United States A group of American seafood exporters are urging federal authorities not to put a tariff on Chinese products for fear of retaliation against US exports.
New MSC standard for seaweed presented
Chile An induction to the Marine Stewardship Council standard in seaweed was carried out in dependencies of Chinquihue Foundation, in Puerto Montt, at the request of the Undersecretariat of Fisheries and Aquaculture.
MSC deems Mexico is Latin America leader in fisheries sustainability
Mexico The work carried out by Mexico in terms of sustainability for more than 10 years has been reflected in the fact that some of its fisheries, in terms of volume, are certified as sustainable by the Marine Stewardship Council.
 
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
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
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.
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. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
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 -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 - 2018 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER