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 September 2, 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 September 2, 2014).

Share This




More Earth & Climate News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands of Fish Dead in Mexico Lake

Raw: Thousands of Fish Dead in Mexico Lake

AP (Sep. 2, 2014) — Over 53 tons of rotting fish have been removed from Lake Cajititlan in western Jalisco state. Authorities say that the thousands of fish did not die of natural causes. (Sep. 2) Video provided by AP
Powered by NewsLook.com
Raw: Iceland Volcano Spewing Smoke

Raw: Iceland Volcano Spewing Smoke

AP (Sep. 2, 2014) — The alert warning for the area surrounding Iceland's Bardarbunga volcano was kept at orange on Tuesday, indicating increased unrest with greater potential for an eruption. Smoke is spewing from the volcano, and lava is spouting nearby. (Sept. 2) Video provided by AP
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) — The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Sharks Off the Menu and on the Tourist Trail in Palau

Sharks Off the Menu and on the Tourist Trail in Palau

AFP (Sep. 2, 2014) — Tourists in Palau clamour to dive with sharks thanks to a pioneering conservation initiative -- as the island nation plans to completely ban commercial fishing in its vast ocean territory. 01:15 Video provided by AFP
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