Powerboat-World.com
 
 
News Home Video Gallery Newsletters Features FishingBoating Photo Gallery Sail-World Australia Australian Cruising
Sail-World Australia Australian Cruising MarineBusiness-World

 

Sail-World.com : Extinction predictor 'will help protect coral reefs'

Extinction predictor 'will help protect coral reefs'

'Parrotfish cleaning the reef for coral settlement'    ARC Centre of Excellence Coral Reef Studies ©    Click Here to view large photo

More than a third of coral reef fish species are in jeopardy of local extinction from the impacts of climate change on coral reefs, a new scientific study has found.

(Local extinction refers to the loss of species from individual locations, while they continue to persist elsewhere across their range.)

A new predictive method developed by an international team of marine scientists has found that a third of reef fishes studied across the Indian Ocean are potentially vulnerable to increasing stresses on the reefs due to climate change.

The method also gives coral reef managers vital insights to better protect and manage the world’s coral reefs, by showing that local and regional commitment to conservation and sustainable fisheries management improves prospects for coral recovery and persistence between storms and bleaching events.

The team applied their ‘extinction risk index’ to determine both local and global vulnerability to climate change and human impacts. They tested the method by comparing fish populations before and after the major 1998 El Nino climate event which caused massive coral death and disruption across the Indian Ocean.

In all, 56 of the 134 coral fish species studied were found to be at risk from loss of their habitat, shelter and food sources caused by climate change. Those most in jeopardy were the smaller fishes with specialised eating and sheltering habits. Because most of these species have wide geographic ranges and often quite large local populations, few were at particular risk of global extinction.

'The loss of particular species can have a critical effect on the stability of an entire ecosystem – and our ability to look after coral reefs depends on being able to predict which species or groups of fish are most at risk,' explains lead author Dr Nick Graham of the ARC Centre of Excellence in Coral Reef Studies and James Cook University. 'Until now, the ability to do this has been fairly weak.'

'For example, we know that the loss of seaweed-eating grazing fishes can lead to coral reefs which have suffered some other form of disturbance being replaced by weeds. Protecting these fish, on the other hand, gives the corals a much better chance to recover.

Degraded coral reef following coral bleaching -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo

'Where there is a widespread death of corals from a climate-driven event such as bleaching, the fish most affected are the ones that feed or shelter almost exclusively on coral. However when corals die off and the reef structure collapses, small reef fish generally are much more exposed to predators.

'By understanding which species and groups of fish are most at risk, we can better manage coral reefs and fish populations to ensure their survival in times of increasing human and climate pressure,' adds Dr Shaun Wilson of the Western Australian Department for Environment and Conservation.

The study does, however, offer encouragement by showing that the fish most at risk from climate change are seldom those most at risk from overfishing or other direct human impacts, pointing to scope to manage reef systems and fishing effort in ways that will protect a desirable mix of fish species that promote ecosystem stability.

'Critically, the species of fish that are important in controlling seaweeds and outbreaks of deleterious invertebrate species are more vulnerable to fishing than they are to climate change disturbances on coral reefs. This is encouraging, since local and regional commitment to fisheries management action can promote coral recovery between disturbances such as storms and coral bleaching events,' explains Dr Wilson.

They conclude that identifying the fish species most at risk and most important to ecosystem stability and then managing coral reefs to maintain their populations will help ‘buy time’ while the world grapples with the challenge of limiting carbon emissions and the resulting climate change.

The team adds that their novel approach to calculating extinction risk has wider application to conservation management beyond coral reef ecosystems and can readily apply to other living organisms and sources of stress.

ARC Centre for Excellence for Coral Reef Studies website

Anemone fish in a bleached anemone -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo

A school of excavating parrotfish Chlorurus enneacanthus -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo

Coral reef replaced with seaweed following coral bleaching -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo

Algae eating powder blue Tang -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo

Coral feeding butterfly fish -  ARC Centre of?nid=80386 Excellence Coral Reef Studies ©   Click Here to view large photo




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.powerboat-world.com/index.cfm?nid=80386

11:04 AM Thu 17 Feb 2011 GMT






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

Click for further information on
Environment and the ocean

Related News Stories:

27 Nov 2013  World Oceans Day appeals for funds
16 Nov 2013  Gigantic iceberg sails north from the Antarctic
09 Nov 2013  Sailing and swimming with manatees - Oceans Watch Essay
01 Nov 2013  OceansWatch: cruising sailors give something back in the South Pacific
23 Oct 2013  'The Ocean is Broken' - without fish, there can be no birds
13 Oct 2013  PlanetSolar reaches Paris after successful ocean study
02 Oct 2013  Monaco Yacht Show goes Green
07 Sep 2013  Great Pacific Garbage Patch - the real story
03 Sep 2013  World's largest solar yacht drops anchor after marine science quest
25 Aug 2013  Boat owners: cover vessels to deter seagulls
MORE STORIES ...

Power Boat News















You scratched my seagrass! by Steven Katona, Newport, RI


Join us on Boating Safety Day on 28 September by Roads and Maritime Services,






Dangerous conditions forecast for NSW boaters by Roads and Maritime Services,










Abbot Point onshore disposal by Great Barrier Reef Marine Park Authority,










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










Brisbane Boat Show begins *Feature by Jeni Bone,














Brisbane Boat Show starts Friday - biggest in 10 years! *Feature
Marine Auctions adds new recruits
Ministerial advisory group launched by united marine industry sector
2014 Auckland on Water Boat Show: Coming up at the end of September
Australian research sheds light on ocean garbage gyres *Feature
Round the World racer joins Southern Pacific Inflatables
2014 Gold Coast Int'l Marine Expo - Quintrex factory opens its doors
Mediterranean Grand Prix - Pons and Chris win the titles
18 anti-piracy weapons for ships to fight pirates
Skysol Frame Large: A new shading solution for sunroofs
Mediterranean Grand Prix 2014 - Wins for Victory and Chaudron
Mediterranean Grand Prix, UIM-ABP Tour: Pons claims Runabout GP1 win
Mediterranean Grand Prix - Al Zaffain and Bin Hendi win race 1
Court judgement a stark reminder about towing safety
Australian Offshore Superboat 2014 - Superboats ready for Redcliffe
Southport Yacht Club’s annual Sail Past and Blessing of Fleet Ceremony
Gosport Grand Prix of the Sea finale to decide P1 champions
Camper & Nicholsons Yachts presents the Sagitta 42
GT15 and GT30 European Championships - Jelf takes to the podium twice
Marine Rescue crew saves cruiser in trouble in rough conditions
XCAT Series gets set to conquer another continent in 2015   
Dangerous conditions for boaters on most of NSW coast   
2014 Mandurah Boat Show - Third largest boat show in Australia   
2014 Gold Coast International Marine Expo - Eye on the big picture   
Mediterranean Grand Prix - Powerboat racing heavyweights head to Ibiza   
Mediterranean Grand Prix - World Aquabike stars all set   
Antarctic sea-level rising faster than global rate   
Powerboat champions gear up for Honda RYA Youth RIB National final   
Andrew Scott joins Superior as General Manager *Feature   
2014 Gold Coast International Marine Expo - Fastest Jet Ski ever built   
Best Birthday Party ever at Southport Yacht Club! *Feature   
‘Hall of Fame’ status for Empire Marina *Feature   
Girl power all set for Nottingham powerboat racing action   
Cowes to Torquay Race 2014 - Intense activity in preparation   
Fort Lauderdale International Boat Show - 13 things to See and do   
Australian Offshore Superboat Champ - 15 Superboats in Coffs Harbour   
European première for Belize 54 Daybridge at Cannes Yachting Festival   
‘Fish Friendly’ accreditation for Sanctuary Cove Marina   
Plethora of Powerboat racing action this weekend   
Vicsail Boat show Open Day at Rushcutters Bay   


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/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 PBW
LocalAds   DE  ES  FR  IT