sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : Marine reserves ‘must adapt to climate change’ scientists say
Marine reserves ‘must adapt to climate change’ scientists say

Australia can be a world leader in designing marine reserves that keep pace with variations in the climate and human activity and still successfully protect their sea life, a leading marine scientist said today.

Professor Bob Pressey of the ARC Centre of Excellence for Coral Reef Studies and James Cook University told the Australian Academy of Science’s Earth System Outlook Conference in Canberra that developing marine protected areas that can absorb the impact of warming oceans, storms and flood events from the land is ‘doable’.

His comments come as government leaders from around the world meet in Doha for the United Nation’s Climate Conference (Nov 26-Dec7) to try to impart new momentum to stalled efforts to fight climate change.

'The challenge we face is that a marine reserve or park usually covers a fixed geographical area – but bodies of hot ocean water, storms and flood runoff move unpredictably in space and time,' Prof. Pressey explains.

'This means either that the reserve boundaries may have to move as things change – or else they need to located and designed carefully. If they’re fixed reserves, they need to be placed away from frequent disturbances, or configured so that individual disturbance events don’t affect them entirely. That way, we can include areas where sea life may take refuge to be safe from the impact.'

Prof. Pressey says that 25 years of ocean temperature data had given scientists a much better understanding of where on the Great Barrier Reef the impacts of coral bleaching were likely to be most severe – and where corals appeared to be consistently safe from high temperatures.

'While we can’t easily predict when an episode of hot ocean water will move in, we can definitely see some areas which appear to avoid the harshest effects over time – whether because they are shielded in some way or cooled by cold upwelling currents.

'This gives us the ability to design marine protected areas for the GBR and elsewhere that are resilient over time, no matter what changes take place.

'On top of the sea temperatures, we can also potentially factor in historical data from cyclone tracks and flood plumes, or bodies of floodwater with high loads of sediment. By superimposing all these we can identify and be sure to protect those special areas of the reef which are naturally resilient and which can recharge other areas that may be damaged.'

In a separate paper to the conference Professor Geoff Jones of CoECRS and JCU said there was now plenty of evidence that marine reserves work – not only by replenishing fish populations in no-take zones, but also by recharging fish populations in areas open to fishing.

'Our a new application of genetic parentage analysis shows protected populations of coral trout are helping to sustain juvenile recruitment in both reserves and in fished populations,' he says.

'At the Keppel islands, local reserves (about 30% of the reef area) now account for about 60% of juvenile recruitment of coral trout in the region, both in reserves and fished areas. Hence, reserves do have the potential to conserve coral trout and sustain fisheries in the long-term.'

However Prof. Jones cautioned that coral trout populations could still suffer if coral cover on the reef declined – and added that size and catch limits would still be needed in areas outside the reserve to ensure there were enough adult fish to sustain the fishery.

'While no take zones are extremely valuable, we need both them and more traditional fisheries management practices to ensure a healthy fish population on the Great Barrier Reef into the future,' he concluded.

http://www.coralcoe.org.au/


by ARC Centre of Excellence for Coral Reef Studies

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=104169

8:40 PM Tue 27 Nov 2012GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







News - USA and the World















The first annual WetaFresh is a big success by Tim Wieringa, Muskegon, MI


















Techno 293 Worlds - France and Italy claim titles by International Windsurfing Association,














420 World Championship - Singapore and Spain out front by 420 International Class Association,




















2014 ISAF Sailing World Cup final qualification system published
Chicago Yacht Club Race to Mackinac - Karma Sailing Group wins
Red Bull 49erFX: Easing into the Olympic scene at Rio
Kempe thrilled to invite himself to Gold Cup party
2014 420 World Championships - Singapore wins Day 2 race
Lightning strikes cut short CFJ Nationals
Etchells Invitational Cup - Girls on top in Cowes
National Sailing Hall of Fame reveals inductees
J/111 North American Championship - Wind Czar victorious
Sevenstar Round Britain and Ireland Race sets off August 10th
PWA Fuerteventura Grand Slam - Antoine Albeau victorious on day 5
Snipe Western Hemisphere and Orient Championship headed for San Diego
WPA Championships - Kids race divisions offered
New Clever Pig launched by US Sailing
America's Cup: Group agrees to co-operate in London Meeting
Copa del Rey Mapfre - Build-up reveals some remarkable enthusiasm
Marblehead NOOD Regatta - Images by Leighton O'Connor
America's Cup: Two AC72 skippers discuss Foiling Moths and the Cup
RS Feva World Championship - Brilliant sailing on day 2
America's Cup: Alameda makes overtures on Venue hosting for San Fran *Feature
Cape Panwa Hotel Phuket Race Week 2014 - Relishing a challenge   
Edgartown Race Weekend - BBBR and Round-the-Island Race winners named   
Etchells Invitational Cup - Aussies take early lead in Cowes   
PWA Fuerteventura Grand Slam - Antoine Albeau strikes back on day 4   
Aquece Rio – International Sailing Regatta - All set for test event   
ISAF World Sailing Rankings for 28 July 2014   
29er World Championship - All set in Kingston   
ORC World Championship - Third Course area opens for huge fleet   
Day one of the Allen RS Feva World Championships   
Anna Tunnicliffe: Final two days of the 2014 Reebok CrossFit Games   
Joachim Aschenbrenner takes gold at ISAF Youth Match Race Worlds 2014   
Maxi Soh scores double wins in CMRC Summer Doubleheader   
29er World Championship opening ceremonies in Confederation Park   
PWA Fuerteventura Grand Slam - Action resumes on day 3   
Vic-Maui Yacht Race - Polishing the silverware   
Land Rover Sydney Gold Coast Yacht Race Start 2014 VIDEO   
Laser Radial Men’s World Championship 2014- Final day   
2014 Pacific Cup - Scarlet Runner wins   
Gladwell's Line: America's Cup - Joint Statement is a curious note *Feature   
ISAF Youth Match Racing World Champ - Top four battle it out for final   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW US
LocalAds   DE  ES  FR  IT