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Aussie sharks still at risk from industrial fishing, despite protections

Macquarie University’s Professor Rob Harcourt urges Oceania-wide action to safeguard several species.

Sharks in Australian waters are well protected but are at risk as soon as they leave them, a new international study reveals.

The North Atlantic blue shark shares much of its territory with longline fishing fleets. Credit: Neil Hammerschlag

The study compiled by 150 scientists around the world – including 26 with ties to Australia – has found that even in the most remote parts of the world’s oceans migratory sharks are in severe danger from commercial fishing fleets, new research reveals.

In a paper published in the journal Nature, more than 150 scientists, including Professor Rob Harcourt from the Department of Biological Sciences at Australia’s Macquarie University, report that the sharks – which include iconic species such as the shortfin mako (Isurus oxyrinchus)  and the great white (Carcharodon carcharias) – congregate in food-rich areas that are also prime hunting grounds for commercial longline fishing fleets.

[Read more…] about Aussie sharks still at risk from industrial fishing, despite protections

Baby blue-tongues are born smart

Australian research finds little lizards learn very quickly.

Young Australian eastern blue-tongue lizards (Tiliqua scincoides) are every bit as clever as adults, researchers have found.

Life is hard for baby blue-tongues. As soon as they are born, they are on their own, with neither parental support nor protection. Adults of the species can grow to 600 millimetres long and enjoy the benefits of thick scales and a powerful bite, but the young are much smaller and thus more vulnerable to predation.

And that means they have to box clever if they are to survive.

[Read more…] about Baby blue-tongues are born smart

Exiled moons may explain astronomical mysteries

Australian and South American researchers posit wandering “ploonets” as unseen actors in distant solar systems.

Moons ejected from orbits around gas giant exoplanets could explain several astronomical mysteries, an international team of astronomers suggests.

Researchers led by Mario Sucerquia, from the Universidad de Antioquia, Colombia, and Jaime Alvarado-Montes from Australia’s Macquarie University, modelled the likely behaviour of giant exomoons predicted to form around massive planets – and discovered that they would be expelled and sent packing.

Roughly 50% of these ejected moons would survive both the immediate expulsion and avoid any subsequent collision with the planet or the star, ending up as quasi-planets travelling around the host star, but in eccentric “Pluto-like” orbits.

[Read more…] about Exiled moons may explain astronomical mysteries

Spinal cord injury? Tired? Get treated!

Melbourne researchers have found that 80 percent of people with quadriplegic spinal injuries have sleep apnoea. It’s having a big effect on their lives but they don’t know they have it, and they don’t know it can be treated.

The researchers are calling for everyone with quadriplegia to see a doctor if they are tired and fatigued, and they’ve produced videos demonstrating the impact on patients’ lives.

[Read more…] about Spinal cord injury? Tired? Get treated!

An island haven for frogs in a sea of extinctions

New Guinea is one of the only places in the world where frogs are safe from the species-destroying chytrid fungus. An international team of scientists has published a new paper that shows how to keep it that way, but they need help to carry out their plan.

The chytrid fungus has wiped out more than 90 frog species around the world, and it’s driving hundreds more towards extinction. New Guinea – the world’s largest tropical island, and home to 6% of all known frog species – is one of the last remaining refuges from the deadly infection.

A team of scientists led by researchers from Macquarie University and the University of New England in Australia think they know how to keep the island’s frogs safe, but they need support to establish a long-term program of monitoring and conservation.

[Read more…] about An island haven for frogs in a sea of extinctions

More safe havens for native plants and animals needed in NSW’s west

The squirrel glider (Petaurus norfolcensis) is listed as a vulnerable species in New South Wales. Photo: Wikimedia CC/Brisbane City Council

Location matters for species struggling to survive under a changing climate.

A new study led by Macquarie University has found we need to provide more safe havens for wildlife and plant species to survive under climate change in New South Wales’ west.

Along the Great Dividing Range, the vulnerable spotted-tailed quoll will be forced to move into higher habitats as the climate changes, but can find sanctuary in protected areas like Kosciuszko National Park.

[Read more…] about More safe havens for native plants and animals needed in NSW’s west

Mission design at rocket speed

Planning space missions is traditionally a time-consuming and costly process. But the new Australian National Concurrent Design Facility (ANCDF), housed at UNSW’s Canberra campus, speeds things up so a mission can be planned in weeks rather than months.

Harnessing the expertise, design processes and software of the French Space Agency CNES (Centre National d’Etudes Spatiales), the UNSW team has created Australia’s first concurrent design facility.

The ANCDF allows engineers and scientists—both professionals and students—to design different parts of a mission in parallel rather than one after the other, which is the traditional approach. [Read more…] about Mission design at rocket speed

Wheat that’s good for guts

A new kind of wheat high in resistant starch can improve intestinal health

Bowel cancer is the world’s third most common cancer. A diet that includes more resistant starch, a kind of fibre that feeds good bacteria in the large intestine, can make it less common. Resistant starch helps improve gut health and reduces the risk of conditions such as diabetes, obesity, heart disease and cancer.

Since 2006, CSIRO scientists have been working in a joint venture with French company Limagrain Céréales Ingrédients and the Grains Research and Development Corporation to develop wheat with more resistant starch. [Read more…] about Wheat that’s good for guts

The shape of a perfect storm: saving lives by predicting firestorms

Scientists available for interview – details and photos below.

Correction: an earlier version stated the tool is being formally trialed by the NSW Rural Fire SERVICE. It is currently in use, but formal trials ended in 2016.

A fully developed pyrocumulus cloud, formed from the smoke plume of the Grampians fire in February 2013. Credit: Randall Bacon

Firestorms are a nightmare for emergency services and anyone in their path. They occur when a bushfire meets a ‘perfect storm’ of environmental conditions and creates a thunderstorm.

Dr Rachel Badlan and Associate Professor Jason Sharples are part of a team of experts from UNSW Canberra and ACT Emergency Services that has found the shape of a fire is an important factor in whether it will turn into a firestorm.

Fires that form expansive areas of active flame, rather than spreading as a relatively thin fire-front, are more likely to produce higher smoke plumes and turn into firestorms, the researchers found.

This finding is being used to underpin further development of a predictive model for firestorms. The model was trialed in the 2015 and 2016 fire seasons by the ACT Emergency Services Agency and the NSW Rural Fire Service, and now forms part of the national dialogue around extreme bushfire development.  

[Read more…] about The shape of a perfect storm: saving lives by predicting firestorms