AIMS

Cyclones can damage even distant reefs

Research finds current models underestimate the impact of hurricanes and typhoons on coral reef communities

Full paper and images available. Details below.

The same area of Scott Reef photographed in 2010, and again in 2012 after Cyclone Lua. Credit: James Gilmour/AIMS

Big and strong cyclones can harm coral reefs as far as 1000 kilometres away from their paths, new research shows.

A study led by Dr Marji Puotinen from the Australian Institute of Marine Science (AIMS) sounds a warning about the way strong cyclone winds build extreme seas that affect coral reefs in Australia and around the world.

Conventional modelling used to predict how a cyclone, hurricane or typhoon might impact corals assumes that wave damage occurs primarily within 100 kilometres of its track.

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Fish faeces reveals which species eat crown-of-thorns

Great Barrier Reef research finds the destructive starfish is eaten more often than thought.

Full paper, video, gifs and still images available. Details below.

Dr Frederieke Kroon looking at a crown-of-thorns starfish on the Great Barrier Reef. Credit: D.Westcott/CSIRO

Crown-of-thorns starfish are on the menu for many more fish species than previously suspected, an investigation using fish poo and gut goo reveals.

The finding suggests that some fish, including popular eating and aquarium species, might have a role to play in keeping the destructive pest population under control.

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Additions to resource industry underwater robots can boost ocean discoveries

Remotely operated vehicles used by the oil and gas sector can be enhanced to gather more scientific data, researchers say.

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An ROV fitted with an arm for collecting marine samples. Credit: AIMS

Underwater robots are regularly used by the oil and gas industry to inspect and maintain offshore structures. The same machines could be adapted to gather extra scientific information, thus boosting environmental and resource management capabilities, an Australian-led study has revealed.

Scientists from around the globe, led by Dianne McLean and Miles Parsons from the Australian Institute of Marine Science (AIMS), are urging closer ties between industry and researchers to maximise the use of the underwater robots, known as remotely operated vehicles (ROVs).

In a paper published in the journal Frontiers in Marine Science, they identify a range of instruments that can be easily added to the craft, including cameras, audio recorders and sample collectors.

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Cold War nuclear bomb tests reveal true age of whale sharks

The radioactive legacy of the arms race solves a mystery about the world’s largest fish.

Text Box:  A whale shark vertebra from Pakistan, in cross section, showing 50 growth bands. Credit: Paul Fanning, Pakistan node of the UN Food and Agricultural Organisation.
AIMS researcher Mark Meekan swimming with a whale shark. (Horizontal)
Credit: Wayne Osborn

Atomic bomb tests conducted during the Cold War have helped scientists for the first time correctly determine the age of whale sharks.

The discovery, published in the journal Frontiers in Marine Science, will help ensure the survival of the species – the largest fish in the world – which is classified as endangered.

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Sharp increase in Ningaloo whale shark injuries might be due to boat encounters

Scarring and major lacerations due to vessel collisions becoming more common, study finds.

The tail of a whale shark (Rhincodon typus), showing massive scarring. Image: Jess Hadden.

Almost one-fifth of the whale sharks (Rhincodon typus) in Western Australia’s Ningaloo Reef Marine Park show major scarring or fin amputations, with the number of injured animals increasing in recent years, new research reveals.

Distinctive scar patterns strongly suggest many of the injuries are caused by boat collisions, says whale shark scientist Emily Lester from the Australian Institute of Marine Science (AIMS).

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Coral chemicals protect against warming oceans

EMBARGO LIFTED: 4am AEDT, Thursday 24 October 2013

Nature paper reveals coral animals produce the ‘smell of the ocean’ – influencing cloud formation and protecting themselves against rising seawater temperatures. 

Australian marine scientists have found the first evidence that coral itself may play an important role in regulating local climate.

They have discovered that the coral animal—not just its algal symbiont—makes an important sulphur-based molecule with properties to assist it in many ways, ranging from cellular protection in times of heat stress to local climate cooling by encouraging clouds to form.

These findings have been published in the prestigious weekly science journal Nature.

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Modelling Darwin Harbour’s extreme tides

$5.6 million upgrade to Arafura Timor Research Facility

Launched by Federal Science and Research Minister Don Farrell

Media call 9.30 am, Friday 24 May 2013, 23 Ellengowan Drive, Brinkin

Darwin Harbour has extreme tidal rises and falls of up to eight-metres. So the ebbing and flowing currents in the channels are strong and fast, all of which makes it difficult for pilots to berth bulk carriers or manoeuvre dredges. [continue reading…]

Colour-changing dragons. And a coral reef recovers from mass bleaching

A remote WA coral reef has recovered from mass bleaching in just twelve years – surprising scientists with its resilience. The study published overnight in the journal Science challenges our assumptions about reef recovery. Photos and video available and more information below.

Colour-changing dragons will reveal their secrets in a half million dollar study launching on Sunday. The tricks of bearded dragons could change medicine and solar energy.   [continue reading…]

Millions of people go without simple vision care; The Great Barrier Reef loses half its coral; Fresh Science finals are coming up

A pair of spectacles can cost just $2. An eye test and fitting can take just 30 minutes.

So why are over 700 million people suffering from poor vision?

An international study by the Brien Holden Vision Institute in Australia and South Africa, and Johns Hopkins University in the US reveals that lack of access to basic optometry services is costing US$202 billion each year.

The research is published in the Bulletin of the World Health Organisation.

More below.

Also in this bulletin:

The Great Barrier Reef has lost half of its coral in the last 27 years

Can we save the Reef by controlling crown of thorns starfish?

The Great Barrier Reef has lost half its coral cover in the last 27 years. The loss was due to storm damage (48%), crown of thorns starfish (42%), and bleaching (10%) according to a new study published in the Proceedings of the National Academy of Sciences today by researchers from the Australian Institute of Marine Science (AIMS) in Townsville and the University of Wollongong. [continue reading…]