Skip to content

Testing the waters

Published 14 Mar 2017 

Bush Heritage is taking its renowned science-backed approach underwater to unlock the secrets of Hamelin Pool.

Stromatolites of Hamelin Pool. Photo Jiri Lochman/Lochman Transparencies.

Much has been made of Hamelin Pool’s incredible Stromatolites, living fossils similar to some of the earliest forms of life on earth, but what of its underwater inhabitants?

Although much research has been conducted through the greater Shark Bay World Heritage Area, Hamelin Pool’s marine life has never been systematically documented.

Ecologist Vanessa Westcott with Hamelin Marine Science Fellow, Erica Suosaari. Photo Cineport Media.

This gap in knowledge means little is currently known about the ecological processes happening within the pool itself, something Bush Heritage Science Fellow Erica Suosaari says has impeded management planning.

“Although many studies have focused on the Stromatolites, the faunal assemblage in the pool itself has gone largely ignored,” she says. “The lack of baseline data in Hamelin Pool leaves us unable to assess the current health of the system, and the impact of heat waves along with the changing climate.”

A new Bush Heritage project in collaboration with the WA Department of Parks and Wildlife and Curtin University plans to change that.

Introducing BRUVS.

Erica Suosaari and Kelly Campbell prepare for a BRUVS drop. Photo by Greg Suosaari.

In years gone by, the only way to capture underwater footage was to send down a diver with a purpose-built camera. It was somewhat effective, but researchers couldn’t escape the limitations of diver-operated systems such as fish behaviour changes and observation bias.

A new technology has now changed the game. Baited Remote Underwater Video Systems (BRUVS) have become the predominant method for conducting underwater surveys, providing greater accuracy while also reducing human interference.

Using little more than a steel frame, two cameras and a bait bag containing crushed pilchards or sardines, Bush Heritage researchers are capturing never-before-seen footage of Hamelin Pool’s incredible sea life.

“It was previously thought that Hamelin Pool would have a low diversity of marine organisms, in particular fishes, due to the water’s high salinity,” Erica explains.

“Yet nearly 100 BRUVS drops have already revealed pockets of Hamelin Pool teeming with fish and snake life. One drop alone recorded Snapper, Gobbleguts, Yellowtail Grunters and Bream.”

A BRUVS drop is carried out in the waters of Hamelin Pool, WA. Photo by Greg Suosaari.

In addition to providing a platform to collect data for analysis, BRUVS also record invaluable information about the immediate habitat.

“A baseline ecological study for a biologically significant area such as Hamelin Pool is extremely important, as it helps us understand the ecological processes that inform management decisions.”

The project will continue into 2020 and Bush Heritage expects to develop a comprehensive baseline understanding of Hamelin Pool’s faunal assemblage. The data will inform a land management plan that will benefit the pool and protect its species for the long term.

Project design by Blanche D'Anastasi (JCU) and Erica Suosaari (Bush Heritage), BRUVS provided by the WA Department of Parks and Wildlife. We gratefully acknowledge the support of the Andyinc Foundation, whose donation allowed us to purchase our research boat at Hamelin Station Reserve.

More from BushTracks Autumn 2017

BUSHTRACKS 23/03/2017

How inspiration became a legacy

A childhood spent in the bush and an admiration for Bob Brown combined to inspire Bush Heritage donor and bequest supporter Davydd Shaw.

Read More

BUSHTRACKS 23/03/2017

Striking it rich in central Victoria

Gloved fingers point at a collection of maps lying on a 4WD bonnet. The group of Dja Dja Wurrung Traditional Custodians and Bush Heritage staff are here to survey the Nardoo Hills reserves in central Victoria for their cultural values.

Read More

BUSHTRACKS 20/03/2017

Feral instincts

From the saltbush plains of Boolcoomatta in South Australia, to the sandy dunes of Ethabuka in Queensland, our staff are working hard to implement science-based methods to combat feral cats.

Read More

BUSHTRACKS 14/03/2017

A different lens

The sun is just rising over Scottsdale Reserve as Richard Taylor quietly slips from the sleeping quarters. The chill in the air reminds him of his native Lancashire in north-west England, although the landscape is vastly different. With him are his trusty camera and a collection of lenses.

Read More

BUSHTRACKS 14/03/2017

Come rain or shine

Braving monsoonal rains and searing heat, PhD student and Bush Heritage Environmental Research Scholarship recipient Justin McCann is unlocking the secrets of Naree Station Reserve.

Read More

BUSHTRACKS 14/03/2017

Sympathy for the devil

It's named after a Canaanite god associated with child sacrifice, and inspired by the ominous looking spikes and horns that adorn its body, yet the Thorny Devil is one of Australia’s most placid reptiles.

Read More
Loading...
{{itemsInCart}} Items - {{formatCurrency(grandTotal)}}