>
 
FishingBoating-World.com
 
 
News Home Newsletters Photo Gallery Powerboat-World Australian Cruising World Cruising MarineBusiness-World Animated Knots
MarineBusiness-World Animated Knots Video Gallery MarineBusiness-World
Sail-World.com : Remote reefs can be tougher than they look
Remote reefs can be tougher than they look


'Spanning 15 years, data collected and analysed by the researchers shows how after the 1998 mass bleaching the few remaining corals provided low numbers of recruits (new corals) for Scott Reef'    ARC Centre of Excellence Coral Reef Studies ©    Click Here to view large photo

Isolated coral reefs can recover from catastrophic damage as effectively as those with nearby undisturbed neighbours, a long-term study by marine biologists from the Australian Institute of Marine Science (AIMS) and the ARC Centre of Excellence for Coral Reef Studies (CoECRS) has shown.

Scott Reef, a remote coral system in the Indian Ocean, has largely recovered from a catastrophic mass bleaching event in 1998, according to the study published in Science today.

The study challenges conventional wisdom that suggested isolated reefs were more vulnerable to disturbance, because they were thought to depend on recolonisation from other reefs. Instead, the scientists found that the isolation of reefs allowed surviving corals to rapidly grow and propagate in the absence of human interference.

Australia’s largest oceanic reef system, Scott Reef, is relatively isolated, sitting out in the Indian Ocean some 250 km from the remote coastline of north Western Australia (WA). Prospects for the reef looked gloomy when in 1998 it suffered catastrophic mass bleaching, losing around 80 percent of its coral cover. The study shows that it took just 12 years to recover.

Spanning 15 years, data collected and analysed by the researchers shows how after the 1998 mass bleaching the few remaining corals provided low numbers of recruits (new corals) for Scott Reef. On that basis recovery was projected to take decades, yet within 12 years the cover and diversity of corals had recovered to levels similar to those seen pre-bleaching.



'The initial projections for Scott Reef were not optimistic,' says Dr James Gilmour from AIMS, the lead author on the publication, 'because, unlike reefs on the Great Barrier Reef, there were few if any reefs nearby capable of supplying new recruits to replenish the lost corals at Scott Reef.

'However, the few small corals that did settle at Scott Reef had excellent rates of survival and growth, whereas on many nearshore reefs high levels of algae and sediment, and poor water quality will often suppress this recovery.

'We know from other studies that the resilience of reefs can be improved by addressing human pressures such as water quality and overfishing,' says Dr Gilmour. 'So it is likely that a key factor in the rapid recovery at Scott Reef was the high water clarity and quality in this remote and offshore location.'

Dr Andrew Heyward, Principal Research Scientist at AIMS, highlights another conclusion from their findings.

'Previously we’ve tended to factor proximity to other reefs as a key attribute when estimating the resilience of a reef following a major disturbance, but our data suggests that given the right conditions, reefs might do much of the recovery by themselves.' This finding could have implications for the management of marine protected areas.

In their publication the team also draws attention to the important role played by climate change in the longer-term prospects for coral reefs, as Prof Morgan Pratchett of CoECRS explains.



'While it is encouraging to see such clear recovery, we need to be mindful of the fact that the coral recovery at Scott Reef still took over a decade. If, as the climate change trend suggests, we start to see coral bleaching and other related disturbances occurring more frequently, then reefs may experience a ratcheting down effect, never fully recovering before they suffer another major disturbance.

'By preventing illegal fishing and enhancing water quality on coral reefs in all regions we will give these reefs a greater capacity to recover from major disturbances.'

The highly detailed, long-term data set makes Scott Reef the best studied reef in Australia’s Indian Ocean territory. The study provides valuable new perspectives on ecosystem function and resilience of coral reefs situated in the northwest Australia, and in other contexts such as the Great Barrier Reef, and illustrates the importance of AIMS’ research collaborations with its industry partners.

Healthy Coral reef -  ARC Centre of Excellence Coral Reef Studies ©  


ACR Centre of Excellence Coral Studies


by AIMS/ARC Centre of Excellence

  

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

http://www.fishingboating-world.com/index.cfm?nid=108199

5:13 AM Sun 7 Apr 2013GMT


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







FishingBoating-World







Great Barrier Reef plan released for comment by Queensland Minister for Environment,












Brisbane Boat Show begins *Feature by Jeni Bone,
















































Andrew Scott joins Superior as General Manager *Feature
Best Birthday Party ever at Southport Yacht Club! *Feature
From nursery to school: Research highlights critical fish habitats
‘Hall of Fame’ status for Empire Marina *Feature
Saltwater Species Hunt Challenge launched
‘Fish Friendly’ accreditation for Sanctuary Cove Marina
Vicsail Boat show Open Day at Rushcutters Bay
Marine15 - prospectus available online now + VIDEO *Feature
Southport Yacht Club achieves Clean Marina certification + VIDEO *Feature
Port Kembla Volunteers bring in 75 metre monster from 5nm offshore
Gold Coast Int'l Marine Expo - Make every moment one to remember
Dangerous conditions for boaters from Queensland border to Sydney
Nanjing 2014 Youth Olympic Games - Opening series concludes
4x4 Outdoors Show and Fishing and Boating Expo - Busy opening day
More new boats brand Brisbane Boat Show as a spectacular showcase
Discover world of transport - Holidays at National Maritime Museum
Garmin’s compact echo dv fishfinders pack a powerful punch
Anthony Gagliardi wins Forrest Wood Cup at Lake Murray
REMUS SharkCam captures up-close encounters with Great White Sharks
From Penguins to Polar Bears
Understanding the value of commercial fishers and how they survive   
4x4 Outdoors Show and Fishing and Boating Expo on the horizon   
Polar research: Six priorities for Antarctic science   
Bivalves' ability to clean chemicals from waterways   
Brisbane Boat Show 2014 - New boat engines set to rev up interest   
Two rescued in tow from 13km offshore   
National 4x4 Outdoors Show and Fishing and Boating Expo - 4WD heaven   
Sydney Boat Show display winners recognised *Feature   
US leads the way in shark conservation, science and management   
2014 National 4x4 Outdoors Show: Popularity of caravanning and camping   
2015 Sydney Inte'l Boat Show - Boating Industry commences planning   
John Hemingway joins anglers for upcoming Wahoo Smackdown V   
Dangerous conditions for boaters from this evening   
Pacific Boating membership offers hassle-free boating *Feature   
Marine15 expands trade, networking and B2B opportunities *Feature   
2014 Auckland on the Water Boatshow - Huge prize packs up for grabs   
Sustainable Seafood - How to purchase with confidence   
4X4 Outdoors Show and Fishing and Boating Expo wows water lovers   
Fishers encouraged to refresh knowledge of size and possession limits   
Newly discovered Juvenile Whale Shark Aggregation in the Red Sea   


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 WAS FBW
LocalAds   DE  ES  FR  IT