Australasian Science: Australia's authority on science since 1938

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Double Jeopardy for Corals

Bleached coral

During the bleaching event there was a sharp contrast between corals that had C2 algae (left) and type D algae (right)

By Alison Jones

Not only are corals jeopardised by warmer waters but their growth is constrained as they change from heat-sensitive to heat-tolerant symbiotic algae in order to survive.

Dr Alison Jones is a postdoctoral researcher at the Centre for Environmental Management at Central Queensland University in Rockhampton, and has been studying the impacts of climate change on local coral communities in the southern Great Barrier Reef Keppel area since 2004.

The full text of this article can be purchased from Informit.

Big Floods = Big Barras

barramundi

Study co-author Ian Halliday catches a barramundi, a popular species for anglers in rivers such as the Daly River in the Northern Territory.

By Tim Jardine, Brad Pusey and Ian Halliday

More barramundi survive to adulthood during big flood years due to increased feeding opportunities.

Tim Jardine and Brad Pusey are Research Fellows at the Australian Rivers Institute, Griffith University. Ian Halliday is a biologist with the Queensland Department of Employment, Economic Development and Innovation.

The full text of this article can be purchased from Informit.

Sinking Aristotle’s Sailing Octopus

argonaut

A female argonaut (Argonauta argo) swimming close to the sea surface in the Sea of Japan. Photo: Julian Finn, Museum Victoria

By Julian Finn

By expertly manipulating air gathered from the sea surface, argonauts are able to control their buoyancy and traverse the world’s oceans at depth.

Dr Julian Finn is a Curator of Marine Invertebrates at Museum Victoria. This study has been published in the Proceedings of the Royal Society of London, B: Biological Sciences.

The full text of this article can be purchased from Informit.

Sleight of Memory

Finger

iStockphoto

By John Bradshaw

Our memories can easily deceive us, for good or for ill.

John Bradshaw is Emeritus Professor of Neuropsychology at Monash University. This is an edited version of a script broadcast on Ockham’s Razor.

The full text of this article can be purchased from Informit.

Head Modification Explains the Origin of the First Australians

skull

The Nacurie 1 cranium provides evidence that mothers intentionally modified the shape of their infants’ heads in the Murray River region of south-eastern Australia during the terminal Pleistocene. Photo: Peter Brown

By Peter Brown

Evidence of head shape modification among Pleistocene Australians helps refute claims of an evolutionary connection with Indonesian Homo erectus.

Peter Brown holds the Chair of Palaeoanthropology at the University of New England, Armidale, NSW.

The full text of this article can be purchased from Informit.

Lizards Give Birth To Cancer Clues

skink

The same protein found in pre-cancerous skin cells helps blood vessels to grow in the placenta of the three-toed skink (Saiphos equalis). Photo: Nadav Pezaro

By Bridget Murphy

A gene found in a pregnant lizard may provide important information about the origins and treatment of cancer in humans.

Bridget Murphy is completing a PhD in biology at the University of Sydney.

The full text of this article can be purchased from Informit.

The Risky Business of Being Male

Foetus

Male and female babies may need to be treated differently in the neonatal intensive care unit.

By Vicki Clifton

Female babies are more likely to survive a stressful pregnancy.

A/Prof Vicki Clifton is NHMRC Research Fellow at the Robinson Institute, University of Adelaide.

The full text of this article can be purchased from Informit.

Renewable Economics

Green energy

It could be possible to shift the entire electricity system to a mix of renewables by 2020.

By Ian Lowe

Growth in GDP could pay for the entire electricity system to be converted to a mix of renewables by 2020.

Ian Lowe is Emeritus Professor of science, technology and society at Griffith University.

The full text of this article can be purchased from Informit.

What Do Greenies Want?

By Hugh Possingham

The conservation movement is often too busy stopping others from getting what they want, and doesn’t spend enough time trying to make its own progress. Maybe it’s time to create a clear set of objectives with plans on how to deliver those objectives.

Professor Hugh Possingham is Director of the Applied Environmental Decision Analysis centre at the University of Queensland.

The full text of this article can be purchased from Informit.

Fruit Extracts Help Exercise Recovery and Asthma

By Roger Hurst

Natural fruit compounds may balance the impacts that exercise can have on the body and help breathing in some types of asthma.

Dr Roger Hurst leads the Food and Wellness Group at Plant & Food Research in New Zealand.

The full text of this article can be purchased from Informit.