Mapping to help preserve Broome’s rare ecology 11/11/2015

While Broome is home to several unique and vulnerable ecosystems, two ecologists say builders and planners could take fairly simple steps to preserve them.

The Minyjuru tree within the restricted Broome PEC, provides a much coveted sweet fruit and traditional Yawuru Mayi (pictured).

The Minyjuru tree within the restricted Broome PEC, provides a much coveted sweet fruit and traditional Yawuru Mayi (pictured).

They have exhaustively mapped the four ecosystems so that making small zoning changes and planning new works and subdivisions around them would be a fairly simple matter most of the time.

Science Network WA [read this story]

Ancient campfires show early population numbers 14/9/2015

RADIO carbon data from prehistoric occupation sites are providing insights into Australia’s fluctuating human population levels tens of thousands of years ago.

ANU archaeologist Alan Williams used radio carbon dating technology to examine charcoal dates from more than 1000 prehistoric campfires and based on this he says populations appear to have increased steadily until 25,000 years ago.

Dr Williams compared these dates with climatic change profiles provided by a recent synthesis of Australia’s palaeoclimate from the OZ-INTIMATE (Australasian INTegration of Ice core, Marine and TErrestial records) project.

Co-author UWA archaeologist Winthrop Professor Peter Veth says Dr Williams’ comparison showed a clear correlation between datasets.

Science Network WA [read this story]

Bremer is a ‘Mecca’ for whale watchers 16/07/2015

GEOFF VIVIAN

The Bremer Canyon has become a “mecca” for international whale watchers because it contains an important feeding ground for killer whales, or orcas.

Click on this image to read the story.

Click on this image to read the story.

“We’re getting international group bookings now where people are flying in from the States, from Europe, China, from wherever,” said film-maker and tour boat operator Dave Riggs.

[From The Great Southern Weekender, July 16, 2015, p7.]

The story goes on to talk about his new doco on Discovery Channel. 

In our interview he made an assertion about a scientific matter and, as neither he nor I are scientists, I ran it past a prominent cetacean researcher that I know. 

That is all a journlist needs to do when presented with a matter of “science” that is not in a reputable peer-reviewed journal – get an expert opinion.

 

Migratory birds find Kimberley safe haven via China 24/10/2013

A SUB-SPECIES of a small shorebird spends much of the northern winter feeding at Roebuck Bay and Eighty Mile Beach in the Kimberley.

The red knot sub-species (Calidris canutus piersmai) breeds in the Siberian Arctic tundra, and travels to and from the Kimberley via China’s Yellow Sea—a round trip of at least 20,000km.

PhD student Ying Chi Chan is one of a group of Netherlands-based scientists conducting detailed longitudinal studies of shorebirds’ flight paths and foraging ecology.

“Habitat destruction is happening in a lot of places but the rate is particularly fast in China,” she says.

“The main thing I want to know is how the bird adapts to this change in environments.”

When I wrote this piece I was unaware of the Wilson Inlet (Denmark WA)’s importance to this intrepid little traveller.

Science Network WA [read this story]

More research needed into Roebuck Bay menu options 24/12/2013

Last  months story about Wilson Inlet (Denmark, WA) shorebirds has prompted me to post this story from two years ago.

From the Broome Advertiser, March 13, 2014. Click on this image to read the story.

From the Broome Advertiser, March 13, 2014. Click on this image to read the story.

The Royal Netherlands Institute of Sea Research is the world centre for shorebird ecology.

Dutch biologists Tanya Compton and Marc Lavaleye have been to Broome a couple of times to sample and assess the marine life that migrating shorebirds feed on during their annual stay.

They say the relative population of bivalves, worms and crabs has changed every time they have been there.

Science Network WA [read this story]

The Broome Advertiser republished this story.

Birds face high water threat 25/6/2015

THE decision by the Department of Water (DoW) not to open the Sandbar at Wilson Inlet could be depriving endangered migrating shorebirds of valuable feeding grounds.

Click on this image to read the story

Click on this image to read the story

Local resident and member of Birdlife Australia, Jesz Fleming, said a report prepared by Denmark’s Green Skills noted the water levels in the inlet have remained at an unusually high level in recent years.

The report says this makes it impossible for shorebirds to feed on animals such as molluscs and worms that usually lie buried under the saturated sand.

Great Southern Weekender [go to website]

Writing science stories can be tricky when you have a report before you and you are not sure of its scientific validity.

The author had not trained as a scientist and, while he may have been following the accepted principles of ornithology and ecology, I was not personally able to make an assessment of this.

Luckily I was able to contact a shorebird ecologist I had previously interviewed, who agreed to read the report.

She told me it was a good report, and she added some useful comments of her own.

Archaeological find puts shellfish on the menu 24/6/2015

An archaeologist told me of some interesting evidence for climate change before the Christian era.

Photo: Carly Monks

It seems shellfish were easy enough to gather in Australia’s mid-west to make it worth throwing a seaside shellfish party.

Stormier weather set in around 3,000 years ago, making shellfish less plentiful.

Science Network WA [read this story]

Modern transport options allow for more hunting time 1/5/2015

Australia’s desert Aborigines seem to have been making bread for at least 10,000 years.

Photo by Rusty Stewart.

Photo by Rusty Stewart.

However the archaeological record shows it only became a common practice about 2,000 years ago.

The latest research shows the key factor here was mobility.

People needing to stay in the same place for weeks at a time to preform ceremonies made bread because they did not have time to travel to new hunting grounds.

Science Network [read this story]

Sophisticated stone axes ‘not invented in Europe’ 9/4/2014

Photo Chris Langluddecke

Photo Chris Langluddecke

The first edge ground stone axes were not invented in Europe. 

They appeared in the central Kimberley at least 30,000 years ago.

“The suggestion that all innovation has to come from the Old World is not true because clearly ground-stone axes were created here,” archaeologist Prof Balme says.

She notes that they were also made in Japan at a slightly later date, by people who would have had no contact with either Australian Aborigines or people in Africa and Europe. Continue reading

GIS technology verifies Caesar and Helvetii history 22/5/2014

The Dying Gaul, ancient Roman marble. Photo via University of Texas

The Dying Gaul, ancient Roman marble. Photo via University of Texas

Before Julius Caesar became Rome’s emperor, he ruled the province of Gaul.

This involved several wars with Celtic tribes, including the Helvetii who left their home in modern-day Switzerland and tried to invade Gaul.

Archaeologists are testing Caesar’s accounts of their population and strenght with Global Information Systems (GIS) technology and underground imaging techniques.

This story was Science Network WA‘s most read article for 2014. It has been accessed more than 14,000 times.