Navigation Links
Will coral reefs disappear?
Date:2/21/2010

This is the title of an upcoming symposium at the American Association for the Advancement of Science (AAAS) annual conference in San Diego, California. And it's a topic that should not be taken lightly.

NSERC-funded researcher Dr. Simon Donner, an assistant professor in the department of geography at the University of British Columbia, will be talking about the vulnerability of coral reefs to climate change due to higher ocean temperatures.

Dr. Donner studies coral bleaching. Corals get most of their energy from microscopic algae that live in their tissue. These algae are colourful and are what gives corals their vivid hue. When environmental factors go out of the range that corals are used to (such as warming water), the symbiosis between the coral and the algae breaks down and corals effectively expel the algae and turn white. The coral is then deprived of its source of energy, and dies.

Dr. Donner studies the frequency of coral bleaching events, their consequences and the link to unusually warm oceans. He says that mass coral bleaching events were thought to be extremely rare as far back as 30 years ago.

At the AAAS conference he will be talking about the predicted occurrence of bleaching events under different climate scenarios and, according to

Dr. Donner, it doesn't look good.

"Even if we froze emissions today, the planet still has some warming left in it. That's enough to make bleaching dangerously frequent in reefs worldwide," he says.

Given the hundreds of millions of people living in the tropics who depend on coral reefs for food, income, tourism and shoreline protection, the loss of reefs is a serious issue.

"Obviously, there's an aesthetic concern because people see Finding Nemo and they're worried about what's going to happen to the world's coral reefs, but the key thing is that there are hundreds of millions of people who depend on them for their livelihood," says Dr. Donner.

However, the outlook isn't completely bleak. Dr. Donner says that no one is predicting that coral reefs will go extinct; they will continue to survive, but only in certain habitats, such as shaded areas. The reality is a general loss of coral cover and a breakdown of the physical structure of reefs.

In order to see what the future of reefs might be, Dr. Donner is pursuing fieldwork in the central equatorial Pacific, because the islands and reefs in that area are affected by repeated El Nino events. Because of this, they've experienced higher year-to-year temperature variability than other areas on the planet. Dr. Donner is studying the corals in these areas to understand how the reefs are biologically different, and how that has allowed them to persist through warm water events that would kill coral in other areas of the planet.

"It's a natural model for the future," he says.


'/>"/>

Contact: Simon Donner
simon.donner@geog.ubc.ca
604-561-7284
Natural Sciences and Engineering Research Council
Source:Eurekalert

Related biology news :

1. Coral can recover from climate change damage
2. Discovery of the Jekyll-and-Hyde factors in coral bleaching
3. Sponges recycle carbon to give life to coral reefs
4. The white stuff: Marine lab team seeks to understand coral bleaching
5. What are coral reef services worth? $130,000 to $1.2 million per hectare, per year: experts
6. What are coral reef services worth? $130,000 to $1.2 million / ht / yr: Experts
7. Coral bleaching increases chances of coral disease
8. Scripps-led study shows ocean health plays vital role in coral reef recovery
9. Coralline algae in the Mediterranean lost their tropical element between 5 and 7 million years ago
10. Nursery programs for corals receive TLC from NOAA this Independence Day
11. Corals stay close to home
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/28/2016)... First quarter 2016:   , Revenues amounted ... quarter of 2015 The gross margin was 49% (27) ... the operating margin was 40% (-13) Earnings per share ... operations was SEK 249.9 M (21.2) , Outlook   ... M. The operating margin for 2016 is estimated to ...
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
(Date:4/14/2016)... 2016 BioCatch ™, the ... announced the appointment of Eyal Goldwerger as ... Goldwerger,s leadership appointment comes at a time of ... deployment of its platform at several of the world,s ... discerns unique cognitive and physiological factors, is a winner ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Parallel 6 , ... announced today the Clinical Reach Virtual Patient Encounter CONSULT module which enables ... the physician and clinical trial team. , Using the CONSULT module, patients and physicians ...
(Date:6/27/2016)...   Ginkgo Bioworks , a leading organism ... today awarded as one of the World Economic ... most innovative companies. Ginkgo Bioworks is engineering biology ... world in the nutrition, health and consumer goods ... customers including Fortune 500 companies to design microbes ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita ... miRNAs in people with peritoneal or pleural mesothelioma. Their findings are the subject of ... now. , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue ...
(Date:6/23/2016)... 2016 /PRNewswire/ - FACIT has announced the creation ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or "the ... a portfolio of first-in-class WDR5 inhibitors for the ... WDR5 represent an exciting class of therapies, possessing ... for cancer patients. Substantial advances have been achieved ...
Breaking Biology Technology: