Featured Research

from universities, journals, and other organizations

Ocean acidification turns projected climate change winners into losers

Date:
February 21, 2012
Source:
University of British Columbia
Summary:
Adding ocean acidification and deoxygenation into the mix of climate change predictions may turn "winner" regions of fisheries and biodiversity into "losers," according to new research.

Adding ocean acidification and deoxygenation into the mix of climate change predictions may turn "winner" regions of fisheries and biodiversity into "losers," according to research released today by University of British Columbia researchers.

Previous projections have suggested the effects of warmer water temperature would result in fish moving pole-ward and deeper towards cooler waters -- and an increase of fish catch potential of as much as 30 per cent in the North Atlantic by 2050.

Accounting for effects of de-oxygenation and ocean acidification, however, some regions may see a 20-35 per cent reduction in maximum catch potential by 2050 (relative to 2005) -- depending on the individual species' sensitivity to ocean acidification.

For example, in the Norwegian Sea, ocean warming by itself may result in a 15 per cent increase in fisheries catch potential. However, accounting for acidification and de-oxygenation, the increase turns to a decrease of 15 per cent, and the region from a "winner" to a "loser."

"Loser" regions in the tropics could become poorer and will require better strategies to mitigate potential food security issues.

"This study provides a clearer picture of the complex interactions between the different climate change impacts on our oceans," says William Cheung, an assistant professor in UBC's Fisheries Centre, who presented his research today at the Annual Meeting of the American Association for the Advancement of Science (AAAS) in Vancouver, Canada.

Climate change and the associated physical and chemical changes in the ocean decrease oxygen in the water in some region. Meanwhile, approximately one-third of the carbon dioxide that humans produce by burning fossil fuels is being absorbed by the ocean, gradually causing the oceans to become more acidic and affecting biological processes of various marine organisms.

Cheung says that rebuilding global fisheries may increase the capacity of marine species to handle the impacts of climate change and ocean acidification.

"This will require efforts on various fronts, including curbing overfishing and reducing carbon dioxide levels," says Cheung.

The results from this study contribute to the Nereus program.


Story Source:

The above story is based on materials provided by University of British Columbia. Note: Materials may be edited for content and length.


Cite This Page:

University of British Columbia. "Ocean acidification turns projected climate change winners into losers." ScienceDaily. ScienceDaily, 21 February 2012. <www.sciencedaily.com/releases/2012/02/120221104119.htm>.
University of British Columbia. (2012, February 21). Ocean acidification turns projected climate change winners into losers. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2012/02/120221104119.htm
University of British Columbia. "Ocean acidification turns projected climate change winners into losers." ScienceDaily. www.sciencedaily.com/releases/2012/02/120221104119.htm (accessed July 24, 2014).

Share This




More Earth & Climate News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Higgins Breaks Record at Mt. Washington

Higgins Breaks Record at Mt. Washington

Driving Sports (July 24, 2014) Subaru Rally Team USA drivers David Higgins and Travis Pastrana face off against a global contingent of racers at the annual Mt. Washington Hillclimb in New Hampshire. Includes exclusive in-car footage from Higgins' record attempt. Video provided by Driving Sports
Powered by NewsLook.com
Storm Kills Three, Injures 20 at Virginia Campground

Storm Kills Three, Injures 20 at Virginia Campground

Reuters - US Online Video (July 24, 2014) A likely tornado tears through an eastern Virginia campground, killing three and injuring at least 20. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins