Tassie devils’ decline has left a feast of carrion for feral cats



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Healthy Tasmanian devil populations have cornered the market on carrion.
Menna Elizabeth Jones, Author provided

Calum Cunningham, University of Tasmania; Christopher Johnson, University of Tasmania; Menna Elizabeth Jones, University of Tasmania, and Tracey Hollings, University of Melbourne

The decline of Tasmanian devils is having an unusual knock-on effect: animal carcasses would once have been gobbled up in short order by devils are now taking many days longer to disappear.

We made the discovery, published today in the journal Proceedings of the Royal Society B, by placing carcasses in a range of locations and watching what happened. We found that reduced scavenging by devils results in extra food for less efficient scavengers, such as feral cats.

Tasmanian devils have struggled for two decades against a typically fatal transmissible cancer, called devil facial tumour disease. The disease has caused devil populations to plummet by about 80% on average, and by up to 95% in some areas.

DFTD has spread across most of Tasmania over a 20-year period. Dashed lines show the estimated disease front.
Calum Cunningham/Menna Jones

Scavengers are carnivores that feed on dead animals (carrion). Almost all carnivores scavenge to a greater or lesser degree, but the devil is Tasmania’s dominant scavenger. Since the extinction of the Tasmanian tiger, it is also the island’s top predator.

A scavenging experiment

In our study, we put out carcasses of the Tasmanian pademelon (a small wallaby weighing roughly 5kg) in a variety of places, ranging from disease-free areas with large devil populations, to long-diseased areas where devil numbers are very low. We then used motion-sensor cameras to record all scavenger species that fed on the carcasses.

The Carnivores of Tasmania: a Scavenging Experiment.

Unsurprisingly, much less carrion was consumed by devils in areas where devil populations have declined. This has increased the availability of carrion for other species, such as the invasive feral cat, spotted-tailed quoll, and forest raven. All of these species significantly increased their scavenging in places with fewer devils.

Consumption of experimentally placed carcasses.
Proceedings of the Royal Society B

The responses of native scavengers (quolls and ravens) were subtly different to those of feral cats. The amount of feeding by quolls and ravens depended simply on how much of each carcass had already been consumed by devils. Ravens and quolls are smaller and less efficient than devils at consuming carcasses, so they get the chance to feed only when devils have not already monopolised a carcass.




Read more:
Tasmanian devils reared in captivity show they can thrive in the wild


In contrast, feral cats tended to scavenge only at sites where devils were at very low abundance. This suggests that healthy devil populations create a “landscape of fear” that causes cats to avoid carcasses altogether in areas where they are likely to encounter a devil. It seems that the life of a feral cat is now less scary in the absence of devils.

Predator prevalence

By looking at 20 years of bird surveys from BirdLife Australia, we also found that the odds of encountering a raven in Tasmania have more than doubled from 1998 to 2017. However, we were unable to directly link this with devil declines. It is likely the raven population is growing in response to a range of factors that includes land-use change and agricultural intensification, as well as reduced competition with devils.

Other studies have shown that cats have also become more abundant in areas where devils have declined. This highlights the potential for devils to act as a natural biological control on cats. Cats are a major threat to small native animals and are implicated in most Australian mammal extinctions.

Carcass concerns

Although smaller scavengers consumed more carrion as devils declined, they were unable to consume them as rapidly as devils. This has resulted in the accumulation of carcasses that would previously have been quickly and completely eaten by devils.

In places with plenty of devils, carcasses were completely eaten within an average of five days, compared with 13 days in places where devil facial tumour disease is rife. That means carcasses last much longer where devils are rare.

DFTD has spread across most of Tasmania over a 20-year period. Dashed lines show the estimated disease front.
Calum Cunningham/Menna Jones

Around 2 million medium-sized animals are killed by vehicles or culled in Tasmania each year, and most are simply left to decompose where they fall. With devils consuming much less carrion, it is likely that carcasses are accumulating across Tasmania. It is unclear how much of a disease risk they pose to wildlife and livestock.

Conserving carnivores

Large carnivores are declining throughout the world, with knock-on effects such as increasing abundance of smaller predators. In recent years, some large carnivores have begun returning to their former ranges, bringing hope that their lost ecological roles may be restored.

Carnivores are declining for many reasons, but an underlying cause is that humans do not necessarily appreciate their pivotal role in the health of entire ecosystems. One way to change this is to recognise the beneficial services they provide.




Read more:
Tasmanian devils are evolving rapidly to fight their deadly cancer


Our research highlights one of these benefits. It supports arguments that we should help the devil population recover, not just for their own sake but for other species too, including those threatened by feral cats.

The devil seems to be solving the disease problem itself, rapidly evolving resistance to facial tumours. Any management plan will need to help this process, and not hinder it. Potentially, returning devils to mainland Australia could provide similar benefit to wildlife threatened by feral predators.The Conversation

Calum Cunningham, PhD candidate, University of Tasmania, University of Tasmania; Christopher Johnson, Professor of Wildlife Conservation and ARC Australian Professorial Fellow, University of Tasmania; Menna Elizabeth Jones, Associate professor, University of Tasmania, and Tracey Hollings, Senior Scientist, Ecological Modelling at Arthur Rylah Institute for Environmental Research, and Honorary Research Fellow, University of Melbourne

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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The Unconformity festival embraces the power and peculiarity of Tasmania’s wild west



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Tasdance’s Junjeiri Ballun – Gurul Gaureima, part of The Unconformity festival, performed Indigenous history in Queenstown’s Queen River.
The Unconformity festival

Asher Warren, University of Tasmania

Of the many festivals dotted across the island state of Tasmania, The Unconformity is particularly well named. It is an inherently unique event, responsive to the particularities of the western town of Queenstown’s unique geology, ecology and culture.

Queenstown is nestled in Tasmania’s mountainous West Coast Range, between Mt Owen and Mt Lyell, with an infamous reputation for inclement weather. And it is remote: at least three hours of winding drive from both Hobart and Launceston.

On a sunny day, the views are spectacular; some for their natural beauty, others for the demonstrable effects of over a century of mining, smelting and clearing. However, after three days of immersion in the town and the festival, I began to feel that Queenstown was somehow better evoked by the moments when the clouds hung low, only to occasionally break open, revealing unexpected and surprising views.

A central ethos of The Unconformity is the curatorial commitment to site-specific and locally engaged work. Many of the works are unique to the location and the people of Queenstown, and developed by artists through multiple visits to the town.
Note must be made of the exceptional diversity of gallery-based works, including Lucy Bleach’s enigmatic Variations on an Energetic Field and the overwhelming scale of Raymond Arnold’s survey, 100 Etchings/35 Years in Tasmania. But I was particularly struck by the use of performance within this festival, as a model for engaging with the place that is “Queenie”.

Queenstown’s bare hills were denuded by over a century of mining.
Shutterstock

The power of listening

The pedestrian bridge over the town’s Queen River became a makeshift stall for audiences wearing headphones for Tasdance’s Junjeiri Ballun – Gurul Gaureima (Shallow Water, Deep Stories). Using the banks and the river itself, the bodies of five dancers explored the Indigenous history of the area and this waterway, which mine tailings and effluent once turned silvery grey and which remains, despite the remedial work to date, stained a remarkable shade of orange.

Tasdance’s Junjeiri Ballun – Gurul Gaureima.
The Unconformity festival

Across the bridge, Prospect brought Dylan Sherridan’s deft and thoughtful engagement with sound together with Sam Routledge’s knack for engaging dramaturgical structures. Using hacked metal detectors, and again wearing headphones, prospectors walked through Passion Park, searching for sonic treasures. The dynamic score was a delight, and the uneven experience for participants (some struck it richer than others) an interesting counterpoint to the otherwise even distributions created by works for headphones.

Another work experienced with headphones, A Score to Scratch the Surface (Opening Scene) by momo doto (Tom Blake and Dominique Chen), offers a markedly different take on the roaming soundscape.

Beginning in the dress circle of the 1933 Paragon Theatre, looking out at the projection screen, we hear an assemblage of recordings taken in and around Queenstown. Curious sonic artefacts are woven with brief snippets of conversations with locals, which slip in and out. The audience of three is ushered out of the theatre, into a car, and driven on a meandering tour of the town by a local resident. These stories, like the sites on this particular tour, don’t cry out for attention, forcing the ear and the eye to search for details. It’s a subtle and meditative work, which engages deftly with diverse reflections on the value of Queenstown’s natural resources.

As artist Tom Blake explained to me, the work was built slowly, over a number of visits to the town: “We were fortunate to have a development period that provided an opportunity to visit and revisit places and people over an extended period. We wanted to avoid being a flash in the pan – dropping by to make a work, then disappearing into the night.”

A Score to Scratch the Surface gestures toward the surprising paradoxes of Queenstown. It’s a place of riches, of devastation and resilience. With the mines closed since a tragic accident in 2013, and uncertainty about their reopening, the town sits in an uneasy limbo and faces difficult decisions. The challenges of regeneration – economically, environmentally and culturally – loom large. There are no easy answers, but the festival offers an opportunity to listen, to share and to understand something of this complexity.

Lucy Bleach’s Variations On An Energetic Field (Variation 3)
The Unconformity

While not explicitly noted as a theme for the festival, the act of listening seemed to be a particular focus. This was most explicit in Jill Orr’s durational performance Listening (made in collaboration with sound artist Richie Cyngler), staged in an old limestone quarry on the edge of town. This work asked audience members to record three wishes, while Orr, with characteristically otherworldly endurance, stood still and listened as these wishes were broadcast by loudspeakers and echoed around the quarry.

In the Medical Union building, Babel, directed by Glen Murray, allowed audiences to roam freely, exploring a panoply of other languages. While a remarkably simple conceit, the experience of wandering and listening to the diverse cast of performers was surprisingly compelling.

Starting with a bang

On a grander scale, the festival opened on Friday with Tectonica, a collaboration between Ian Pidd, Martyn Coutts and Dylan Sheridan, which closed down the main intersection to host a nine-tonne rock and some “bloody big speaker stacks”. The tremendous, visceral soundscape condensed some 500 million-odd years of geological activity into an hour of epic, quadrophonic sound and, in the distance, an ominous red fissure opened up in the mountainside. Not content to lie dormant, the speakers rumbled sporadically throughout the weekend, felt and heard throughout the small town.

Tectonica a display created by artists Martyn Coutts, Ian Pidd and Dylan Sheridan.
Unconformity festival

The Falls, by Halcyon Macleod and Finegan Kruckemeyer, tells a story of young love, separation and return. It is a moving work, quite literally, as the audience dons headphones and climbs aboard a bus. The narrative of the play unfolds from a series of perspectives while journeying from one end of the Queen River – the Horsetail Falls – to the other, its confluence with the King River. It’s an ambitious and expansive work – and neatly staged – but at times the poetry of the script seemed to overextend, attempting to translate the narrative and connection to this site perhaps beyond its specifics.

An ominous red fissure opens in Tectonica.
Unconformity

Local works

For all the innovative contemporary work in this festival, and the influx of city slickers who pour in from Hobart (vying for the title of Australia’s new centre of hip) and the mainland, it would be all too easy to alienate the locals. But the festival does a remarkable job of keeping the West Coasters not only in the frame, but at the centre. While there was a palpable but subtle sense of reservation on the Friday night, by the closing Sunday the town seemed to reach a comfortable equilibrium.

Around noon on Sunday, after the ute muster took off and before the marquee football match on Queenstown’s notorious gravel oval, the bloody big speaker stacks gave a last hurrah and belted out a locally curated playlist of AC/DC’s greatest hits. An homage to the band’s 1976 performance in the town, the music slowly drew a crowd. It grew, as more joined in and danced around, and on, the rock left in the centre of the intersection.

This festival, which began as the Queenstown Heritage and Arts Festival, and more recently reimagined as The Unconformity, has carved out a unique position in Tasmania and in Australia’s cultural landscape. It will next run in 2020, and its growing esteem and success raise an important question about growth and sustainability. One of the key features of this festival is its scale, which allows it to balance the influx of visitors and locals; they meet, rather than being overwhelmed.

Under proud West Coaster Travis Tiddy’s direction, however, the festival will hopefully approach its growth with the same focus and thoughtful reflection on place that made the 2018 version such a memorable success.The Conversation

Asher Warren, Lecturer, University of Tasmania

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Green light for Tasmanian wilderness tourism development defied expert advice



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At least 30 tourism developments have been proposed for Tasmania’s World Heritage-listed wilderness.

Brendan Gogarty, University of Tasmania; Nick Fitzgerald, University of Tasmania, and Phillipa C. McCormack, University of Tasmania

The Commonwealth government’s decision to wave through a controversial tourism development in the Tasmanian Wilderness World Heritage Area was made in defiance of strident opposition from the expert statutory advisory body for the region’s management, it was revealed today.

In August, federal environment minister Melissa Price’s office decided the proposed luxury development on Halls Island did not need to be assessed under the Commonwealth Environment Protection and Biodiversity Conservation (EPBC) Act.

But according to documents tabled in Tasmania’s parliament by the Greens this morning, the state’s National Parks and Wildlife Advisory Council had advised the opposite, as well as recommending that the proposal should not be approved at all in its current form. The council also argued “contentious projects” like this one should not be considered for the Tasmanian Wilderness World Heritage Area without “an agreed framework to guide assessment”.

This situation is not unique, and reveals a deeper problem with our national environmental laws. They may look strong on paper, but their strength can be eroded by bureaucratic discretion.

From conservation to commercialisation

Tasmania’s wilderness has long been ground zero for the struggle between conservation and commercialisation of our natural estate. In the 1980s, the Commonwealth government nominated the area for World Heritage listing to stop the state government building a hydroelectric dam on one of Australia’s last truly wild rivers.

The “locking up” of large parts of wilderness from industrial development has prompted deep social divisions. Nevertheless, the Tasmanian Wilderness World Heritage Area (TWWHA) has since become part of Tasmania’s cultural and natural fabric. Yet this wilderness is now under renewed threat, as commercial interests seek to capitalise on its tourism potential.




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World Heritage Areas must have an up-to-date management plan to ensure compliance with Australia’s obligations under the World Heritage Convention. In 2016 the Commonwealth and Tasmanian governments revised the TWWHA management plan to reflect its “socio-economic” value, allowing a range of tourism uses that were banned under the previous 1999 plan.

The World Heritage Committee warned in 2015 that without “strict criteria for new tourism development”, there would be significant risks to the area’s “wilderness character and cultural attributes”. Australia accepted the recommendation but has still not meaningfully implemented strict criteria to assess and protect wilderness values, even as it accepts proposals for tourism developments.

Proposed commercial infrastructure projects involving built structures, transport, and modification of the natural environment in the Tasmanian Wilderness World Heritage Area, which have received preliminary or final approvals at October 2018. 30 proposals have been made and additional projects are likely to be announced as the EOI process continues.
(c) Nick Fitzgerald 2018.

Since both levels of government agreed to open up the TWHHA, a range of commercial interests have proposed tourism developments there. Expressions of interest for commercial developments are done behind closed doors, but it is clear that at least 30 commercial development proposals have been made for sites in the TWWHA, including projects involving permanent huts, lodges and camps, and some that would necessitate helicopter access.

Halls Island

The first of these proposals to be released for public comment and assessed under the 2016 management plan is a plan to build a “luxury standing camp and guided ecotourism experience” at Halls Island in Walls of Jerusalem National Park – a remote highland region of the TWWHA.

The plan includes reclassifying the lake surrounding Halls Island from “wilderness” to “self-reliant recreation”. On March 22, 2018, the proponent (Wild Drake Pty Ltd) referred the proposal to the Commonwealth Environment Minister to determine whether it should be formally assessed under the EPBC Act.

Upon referral the proposal met with widespread opposition from scientists, conservation specialists, civil society, and recreational users of the park, especially the fishing community. What became clear today is that it was also strongly opposed by the expert advisory council for the TWWHA.

Expert advice

The National Parks and Wildlife Advisory Council (NPWAC) is a statutory body of independent experts, with responsibility to advise on the management of the TWHHA in line with Australia’s national and international World Heritage commitments. The documents released today show that on July 13 2018, the NPWAC argued strongly against the proposal being allowed to proceed, stating that it “does not support this project progressing at this time”.

It cited a range of objections, including the fact that the development would effectively grant “exclusive private commercial use” of an area in the TWWHA, and that the opening up of airspace to helicopters would set an unwelcome precedent. It also described the development’s planned “standing camp” as a “pretence” because it would involve the construction of permanent buildings for year-round use. And it pointed to the proposal’s failure to address adequately the risk to threatened species and the fire-sensitive nature of the property.

Like the World Heritage Committee, NPWAC argued that the range of projects currently proposed for the TWWHA “should not be considered until there is an agreed framework to guide assessment”. Yet despite this, the minister’s delegate allowed the proposal to proceed without further assessment under the EPBC Act.

Commonwealth government’s decision

On August 31, 2018, the delegate of the minister decided that the referred action “is not a controlled action”, which means that it will not be subject to any further assessment, or even attention, by the Commonwealth government. No other reasons were given to reject the NPWAC’s recommendations, or the submissions from 78 individuals (including expert scientists) and 808 campaign submissions opposing the development.

Government ministers are not bound to act on expert advice. But they do have a duty to take it into account in a meaningful way. That is especially the case when expert advice is so clear, and supported by a range of relevant, independent and compelling public submissions from scientists and specialist groups.

According to the IUCN, world heritage wilderness area areas allow us to understand nature on its own terms and maintain those terms while allowing (and even encouraging) humans to experience wild nature.
(c) Brendan Gogarty

In the case of Halls Island, these factors should have tipped the balance towards undertaking a proper, legal assessment of the proposal and its likely impacts.

In a response to The Conversation, Price said her department had considered a range of advice and concluded that the proposed development is “not likely to have significant impacts on any nationally protected environmental matters, including the value of the World Heritage Area”.

Examined against the government’s increasingly cavalier attitude to our national estate, world heritage, and role in global environmental governance it is tempting to conclude that Tasmania’s wilderness has become yet another place where economic values trump conservation ones.

The Commonwealth is supposed to provide a check and balance on states’ self-interest in exploiting areas of outstanding universal value. But with another 29 development proposals on the list, our fear is that Tasmania’s World Heritage “wilderness” will become a lot less wild in the future.The Conversation

Brendan Gogarty, Senior Lecturer in Law, University of Tasmania; Nick Fitzgerald, PhD candidate, University of Tasmania, and Phillipa C. McCormack, Lecturer, Faculty of Law, University of Tasmania

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Eulogy for a seastar, Australia’s first recorded marine extinction



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The Derwent River Sea Star was only documented for 25 years before its extinction.
Blair Patulo, Museums Victoria, CC BY-NC

Tim O’Hara, Museums Victoria

We see the surface of the sea: the rock pools, the waves, the horizon. But there is so much more going on underneath, hidden from view.

The sea’s surface conceals human impact as well. Today, I am writing a eulogy to the Derwent River Seastar (or starfish), that formerly inhabited the shores near the Tasman Bridge in Hobart, Tasmania. It is Australia’s first documented marine animal extinction and one of the few recorded anywhere in the world.




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https://giphy.com/embed/TgFkyRxbZCTLx8OEqF

The Derwent River Seastar, preserved in the Tasmanian Museum and Art Gallery, Hobart. Credit: Christy Hipsley, Museums Victoria/University of Melbourne

Scientists only knew the Derwent River Seastar for about 25 years. It was first described in 1969 by Alan Dartnall, a former curator of the Tasmanian Museum and Art Gallery. It was found on and off until the early 1990s but scientists noted a decline in numbers. Targeted surveys in 1993 and 2010 failed to find a single individual.

It was listed as critically endangered by the Tasmanian and Australian governments. But now, like a long-lost missing person, it is time to call it: the Derwent River Seastar appears extinct.

It is actually quite hard to document the extinction of marine animals. There is always hope that it will turn up in some unusual spot, somewhere in that hidden world. Australia has an ambitious plan to create high-resolution maps of 50% of our marine environment by 2025. This is a formidable task. But it is a reflection of our lack of knowledge about the oceans that, 20 years after the launch of Google Maps and despite an enormous effort in the interim, much of Australia’s seafloor in 2025 will be still largely known from the occasional 19th-century depth sounding, or imprecise gravity measurements from satellites.

We do notice when big animals go. There used to be a gigantic dugong-like creature called Steller’s Sea Cow, which lived in the North Pacific Ocean until it was hunted to oblivion by 1768. There is no mistaking that loss.

Steller’s Sea Cow, which grew up to 10 metres long and weighed between five and ten tonnes, was hunted to extinction in 1768.
Paul K/Flickr, CC BY

But the vast majority of the estimated 1 million to 2 million marine animals are invertebrates, animals without backbones such as shells, crabs, corals and seastars. We just don’t monitor those enough to observe their decline.

We noticed the Derwent River Seastar because it was only found at a few sites near a major city. Its story is intertwined with the usual developments that happen near many large ports. The Derwent River became silty and was at times heavily polluted by industrial and residential waste. The construction of the Tasman Bridge in the early 1960s cannot have helped.

From the 1920s a series of marine pests were accidentally introduced by live oysters imported from New Zealand, or by hitching a ride on ships. Some of these pests are now abundant in southeast Tasmanian waters and eat or compete with local species.




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The Derwent River Seastar has been a bit of an enigma. From the start, it was mistakenly classified as belonging to group of seastars (poranids) otherwise known from deep or polar habitats. Some people wondered whether it was an introduced species as well, one that couldn’t cope with the Derwent environment.

However, we used a CT scanner at the School of Earth Sciences, University of Melbourne, to look at the internal skeleton of one of the few museum specimens. Sure enough, it has internal struts to strengthen the body, which are characteristic of a different group of seastars (asterinids) that have adapted to coastal environments and are sometimes restricted to very small areas.

https://giphy.com/embed/3ksOMV7xcoVKhOXVE2

CT scan showing the internal structure of the seastar. Source: Christy Hipsley, Museums Victoria/University of Melbourne

Is this seastar like a canary in a coal mine, a warning of a wave of marine extinctions? Sea levels are rising with global warming, and that is going to be a big problem for life adapted to living along the shoreline. Mangroves, salt marsh, seagrass beds, mud flats, beaches and rock platforms only form at specific water depths. They are going to need to follow rising sea levels and reform higher up the shoreline.

Coastal life can take hundreds to thousands of years to adjust to these sorts of changes. But in many places we don’t have a natural environment anymore. Humans will increasingly protect coastal property by building seawalls and other infrastructure, especially around towns and bays. This will mean far less space for marine animals and plants.




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We need to start planning new places for our shore life to go – areas they can migrate to with rising sea levels. Otherwise, the Derwent River Seastar won’t be the last human-induced extinction from these environments.The Conversation

Tim O’Hara, Senior Curator of Marine Invertebrates, Museums Victoria

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Friday essay: on the trail of the London thylacines



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Thylacine joey, from the collections of the Natural History Museum, London.
Penny Edmonds

Penny Edmonds, University of Tasmania and Hannah Stark, University of Tasmania

On a cold, dark night in the winter of June 2017, hundreds of people gathered on the lawns of Hobart’s parliament house to join a procession that carried an effigy of a giant Tasmanian tiger (thylacine) to be ritually burnt at Macquarie Point.

In an act called “the Purging”, part of the Dark Mofo festival, participants were asked to write their “deepest darkest fears” on slips of paper and place them inside the soon-to-be incincerated thylacine’s body. This fiery ritual, a powerful cultural moment, reflects the complex emotions that gather around this extinct creature.

More than a spectacle, the Dark Mofo event can be read as a strange memorialisation of loss and a public act of Vandemonian absolution in response to the state’s deliberate role in the tiger’s extinction. It led us to ask: what remains of the thylacine and what does it mean to come face-to-face with thylacine remains in the age of mass extinction?

The Purging at Dark Mofo 2017.
Courtesy of Dark Mofo/Lusy Productions

Numerous “sightings” – and scientific research that seeks to resurrect the thylacine – attest to our longing to bring this species back from the dead. Our research takes a different path. We want to look for the traces of the thylacine in this time of great environmental uncertainty, in which species are becoming extinct at a rate never before experienced by humans. Facing our past losses is an important project in the Anthropocene, the age defined by humanity’s impact on the earth.

We have hunted for some of the 750 thylacine specimens in museum collections scattered around the world. These are a legacy of the period when Tasmania was a British colony, and the network of global trade that connected this small island state to the centres of colonial power.

In September 2017 we went in search of some of the creatures who had made the perilous journey to the United Kingdom: the London thylacines.

An archive of bodies

In search of what remains, we visited the Natural History Museum of London, one of the premier repositories of natural science collections in the world. In the storeroom, we were able to look through a cabinet containing trays of thylacine specimens, many with their original 19th century tags attached.

Amongst these remains were the preserved skins of Tasmanian tigers as well as skulls, bones and one thylacine pup. Stuffed and sewn, with a blind eye of cotton wool, this baby in its white protective tray was the tiniest of thylacine young.

Thylacine joey, from the collections of the Natural History Museum, London.
Penny Edmonds

While our photographs of the visit to the museum show us smiling in the storeroom – as travelling Australians we were pleased to be there after our long journey – we were, in fact, overwhelmed with cross-currents of emotion. The palpable shock of seeing so many thylacine bodies in trays in this and several other collections was a profound recognition of loss.

Some 167 specimens of Tasmanian tigers reside in museums in the UK alone. As such, this small joey is made more poignant by the scale of what we saw. A museum visitor might see a single thylacine on display, where one body stands in for its entire species.

Yet in the storerooms of the museum we came face-to-face with the sheer volume of animal bodies that were evacuated from Tasmania. In a world where extinction is becoming all too mundane, the individual lives and deaths of these animals were palpable.

Thylacine skulls, from the collections of the Natural History Museum, London.
Penny Edmonds

From the late-18th century, the new Antipodean colonies in Australia and New Zealand were homes for the strangest of new creatures, at least to European eyes. A furious trade began between the colonies and Europe. New animals of scientific curiosity were avidly collected and discussed at meetings of the Royal Society of Tasmania, founded in 1843.

Here, animals such as black swans, wombats, and thylacines were exhibited, examined, and circulated. The society members responded enthusiastically to requests from Europe’s elite scientists to send specimens from the colonies. In 1847, for instance, the society’s committee minutes show that members attempted to source an “impregnated Platypus or Echidna preserved in spirits. Also the brains of the Thylacinus [Tasmanian Tiger] and Dasyurus [Tasmanian Devil]”. These were to be collected for for the eminent British comparative anatomist and fossil hunter Professor Richard Owen, one of the forces behind the creation of the Natural History Museum in London.

The bodies of animals shipped from the colonies and held in museums have always been important for scientific research; they constitute vast repositories of natural heritage material of immense value. In the Anthropocene age, the value of these animal archives as arks of genetic material has become more apparent, but they are also repositories of loss.

Echidnas in jars, from the collections of the Natural History Museum, London.
Penny Edmonds

Moreover, many collecting institutions the world over face financial difficulties and struggle to look after their collections. Some collections are deteriorating due to lack resources and staff, and this may ultimately lead to the final disappearance of the thylacine.

Dead on arrival

We visited the London Zoo Archives to find out more about the thylacines displayed there over the 19th and early-20th centuries. The London Zoo was the place to which the first and last recorded Tasmanian tigers were exported – the former in 1850 and the latter, purchased for the princely sum of 150 pounds, in 1926. The very last thylacine outside of Australia died at the London Zoo in 1931.

‘Register of Deaths in the Menagerie’, London Zoo Archives.
Penny Edmonds

The long sea journey was harsh, and many of the thylacines shipped from Van Diemen’s land were simply declared “dead on arrival”. One animal died just eight days after arriving in 1888. In the hope of offspring, many thylacines were shipped in breeding pairs. Yet these hopeful reproductive futures were often foreclosed when one of them died in transit, as was the case of the final shipment in 1926.

We were lured to the London Zoo archives by the librarian’s mention of the “death books”, a remarkable set of “Registers of Death in the Menagerie.” Within these weighty volumes we found page after page of neat, looping cursive script listing the dates, names, “originating habitat”, “cause of death” and “how disposed of” for all the animals that died in the London Zoo, beginning in 1904.

As we turned the pages and moved through the years, we witnessed the deaths of the “Tasmanian wolf” amongst a veritable menagerie of animals from all over the globe and especially from Britain’s colonies – Egypt, South Africa, India, Ceylon, the west coast of Ireland, and Australia – reflecting the imperial networks of exchange and transportation through which these animals were shipped.

Pages from the ‘Register of Deaths in the Menagerie’, London Zoo Archives.
Penny Edmonds

Among two black swans found dead within days of each other, budgerigars found “worried to death”, and a “black-faced kangaroo” that died of pneumonia in the cold, wet English weather, was the thylacine that died on January 17 1906. This was “Specimen 91”, a female purchased on March 26 two years before.

Yet while there is little information on the cause of her demise, the death books note she was “not examined” but was “disposed of” to “W Gerrard (of Gerrard and Sons taxidermist)” and “sold for 1 pound, 1 shilling.”

Armed with the 1869 plans of the zoo, we went looking for the thylacines’ cage. From the map we could see that thylacines had been kept in a far corner of the zoo, near the banks of a rivulet. Due to more recent building and development, pinpointing the exact location was a challenge. What we did find was a nondescript, brutalist building and an asphalt service road. Of the thylacine enclosure, nothing remained.

This site resonates with the abandoned Beaumaris Zoo in our home city of Hobart, the location of the “final” thylacine death, which sits on the banks of the River Derwent in Hobart behind locked gates. Both of these spaces are forgotten sites of death. They are where thylacines began and ended their journeys, places which link the colony and London through circuits of scientific trade and esteem, where animal lives and deaths were managed by bureaucratic processes, and where humans and thylacines came face-to-face. But what remains at these sites? Nothing that would tell the sad story of the thylacine.

Deliberate extinction

The “last” thylacine died of exposure after it was locked out of its sleeping enclosure on September 7 1936 at Beaumaris Zoological Gardens on the Hobart Domain. This death, now so weighted with significance, went unremarked at the time. There were no news reports to record the animal’s passing and its remains were thrown away.

The extinction of the thylacine is particularly resonant because it was annihilated through human actions; its death was sanctioned by government policy and deliberately and systematically enacted.

The thylacine was demonised by Tasmanian graziers as a blood-thirsty carnivore that liked to feed on sheep. While the Van Diemen’s Land Company had placed a bounty on the head of the thylacine in 1830, it was the parliament that signed the species’ death warrant. Between 1888 and 1909 the government paid one pound per adult and ten pence per young, during which time 2,184 bounties were rewarded. The public knew what it was doing. In 1884 a group of farmers on Tasmania’s east coast set up the “Buckland and Spring Bay Tiger and Eagle Extermination Society” with the explicit purpose of eradicating the species.

The cultural guilt that attends the thylacine is perhaps why it is such an important international symbol for extinction and why the date of the death of the last thylacine is now National Threatened Species Day.

The thylacine’s legacy

The spectre of the thylacine haunts the public imagination and there is significant scientific focus on the physical remains of this now infamously extinct creature. In 2017 there was a spate of highly publicised “sightings” in Queensland and Tasmania.

In December of the same year, scientists reported that they had sequenced the genome of a one-month old thylacine pup or joey, a curious and pale creature preserved in alcohol from Museum Victoria. In February 2018, researchers announced they had for the first time completed full CT scans of rare pouch young.

Thylacine joey preserved in ethanol in the collection of Museums Victoria.
Healley, Benjamin/Museums Victoria

Indeed, they found a mix up: some specimens were tiny quolls or Tasmanian devils, not thylacine joeys at all. As an article in The Guardian noted, the research “all contributes to the ultimate end goal of bringing back a thylacine, a project that is technologically distant but theoretically possible.”

However, for scholars Thom van Dooren and Deborah Bird Rose, de-extinction projects blind us to the finality of extinction. They advocate actively grieving extinction because it does important political work. They write: “The reality is that there is no avoiding the necessity of the difficult cultural work of reflection and mourning. This work is not opposed to practical action, rather it is the foundation of any sustainable and informed response.”

Australia has the worst mammal extinction rate in the world. The thylacine is one of 30 mammals that have been lost here since European settlement. Thinking through the meanings and politics of the loss of the thylacine is crucially important in this context. Rare thylacine remains, housed in museum collections around the world, are precious archives that are part of our global heritage. We must take care of them. Moreover, facing this loss directly in the age of extinction is a political act.


This collaborative interdisciplinary project, “Extinction Afterlives”, brings together Associate Professor Penny Edmonds, Dr Hannah Stark and Adjunct Associate Professor Katrina Schlunke, University of Tasmania, to consider the cultural life of the extinct thylacine and other creatures in the Anthropocene.

The ConversationWe wish to thank Roberto Portela Miguez, Senior Curator in Charge of Mammals, The Natural History Museum, London, for hosting our visit to the museum and for his helpful discussions on this essay topic. Also, Mathew Lowe, Collections Manager, University Museum of Zoology, Cambridge University, Kathryn Medlock, Senior Curator Vertebrate Zoology, Tasmanian Museum and Art Gallery, and Tammy Gordon, Collections Officer, Natural Sciences, Queen Victoria Museum and Art Gallery, Tasmania.

Penny Edmonds, Associate Professor, Australian Research Council Future Fellow, University of Tasmania and Hannah Stark, Senior Lecturer in English, University of Tasmania

This article was originally published on The Conversation. Read the original article.

Friday essay: how archaeology helped save the Franklin River



File 20180228 36671 1flhlqv.jpg?ixlib=rb 1.1
Morning Mist Rock Island Bend, Franklin River, Southwest Tasmania.
Peter Dombrovskis/ (courtesy Liz Dombrovskis) AAP

Billy Griffiths, Deakin University

On 1 July 1983, in a dramatic four-three decision, the High Court of Australia ruled to stop the damming of the Franklin River. It brought an end to a protracted campaign that had helped bring down two state premiers and a prime minister, as well as overseeing the rise of a new figure on the political landscape – the future founder of the Greens, Bob Brown.

The fact that a remote corner of southwest Tasmania became the centre of national debate reflects what was at stake in the campaigns against hydro-electric development. For many, like novelist James McQueen, the Franklin was “not just a river”: “it is the epitome of all the lost forests, all the submerged lakes, all the tamed rivers, all the extinguished species”. The campaign was a fight for the survival of “a corner of Australia untouched by man”; it was a fight for the right of “wilderness” to exist.

“It is a wild and wondrous thing,” Bob Brown wrote of the Franklin River in May 1978, “and 175 years after Tasmania’s first European settlement, the Franklin remains much as it was before man – black or white – came to its precincts.”

But it was not only the idea of “wilderness” – of an ancient, pure, timeless landscape – that saved the Franklin. The archaeological research that took place during the campaign was at the heart of the High Court decision. Far from being untouched and pristine, southwest Tasmania had a deep human history. What was undoubtedly a natural wonder was also a cultural landscape.

‘A sea of stone artefacts’

The archaeological site at the centre of the campaign was, for a time, known by two names: Fraser Cave and Kutikina. Kevin Kiernan, a caver and the first director of the Tasmanian Wilderness Society, was the first to rediscover the site. He and Greg Middleton recorded it on 13 January 1977 as part of a systematic survey of the lower and middle Gordon and Franklin Rivers.

They were aware that the monolithic Hydro-Electric Commission was considering the region as the site for a new dam and they were searching for something – “maybe a big whizz-bang cave” – that might save these valleys from being flooded. In an attempt to raise awareness of this threatened landscape, they started a tradition of naming rock features in the southwest “after the political figures who would decide their fate”.

Fraser Cave was thus named after the sitting Prime Minister, Malcolm Fraser. There was also a Whitlam cave, a Hayden Cave and a Bingham Arch. When the Tasmanian Nomenclature Board caught wind of this tradition, they accused Kiernan and other members of the Sydney Speleological Society of “gross impertinence” for naming caves outside their state. In mid-1982, at the suggestion of the Tasmanian Aboriginal Centre, Fraser Cave became Kutikina, which means “spirit” in the oral tradition nurtured by the dispossessed Tasmanian Aboriginal community on Babel Island in Bass Strait.

The excavations at Kutikina played a powerful political role in the Franklin River campaign.
Rhys Jones, AIATSIS, JONES.R09.CS.000142949

But although Kiernan admired the natural splendour of Kutikina in 1977, he did not immediately recognise the artefacts it contained as human-made. It was not until he returned in February 1981 that he realised what he had found. He and the new director of the Tasmanian Wilderness Society, Bob Brown, and its secretary, Bob Burton, were searching the remote valley for evidence of a convict who had supposedly perished in the region after escaping the Macquarie Harbour Penal Station.

The story conjured the “wildness” of the country and the discovery of his bones might help bring publicity to their campaign against the dam. But when they climbed through the entrance of Kutikina, they were amazed to find a sea of stone artefacts and ashy hearths extending into the dark. These were no convict bones.

Three weeks later, a team of archaeologists, cavers and National Parks officers rafted down the Franklin River to investigate. It was already dark on 9 March 1981 when they tied their boats to the riverbank. They had a deep chill after hours navigating the fast-flowing river, hauling their aluminium punt and rubber dingy over successive rapids, journeying deeper into the dense rainforest. The rain picked up again as they unloaded their gear and took shelter in the mouth of the cave, which opened “like a huge, curved shell”.

Some of the team started a small, smoky fire to cook their dinner, while the others, with the light of their torches, ventured into the cavern. Kutikina opened out “like an aircraft hangar” and extended for almost 200 metres into the cliff. But it was not its scale that excited them: it was the idea that this remote cave, buried in thick “horizontal” rainforest, could have once been home to a thriving human population.

Too tired to erect their tents, they unrolled their sleeping mats on the disturbed floor at the cave entrance. It later occurred to them that they were probably the first people to sleep there in around 15,000 years.

Over the following days, as rain poured outside, the team carefully surveyed Kutikina. The archaeologists, Rhys Jones and Don Ranson, opened a small trench where the black sediment of the floor was covered by a thin layer of soft stalagmite. The test pit only extended to a depth of 1.2 metres before it met bedrock, but it yielded an extraordinary 75,000 artefacts and 250,000 animal bone fragments.

Don Ranson outside Kutikina in the heart of the southwest Tasmanian rainforest.
Rhys Jones, AIATSIS, JONES.R09.CS.000142944

This small pit represented about one per cent of the artefact-bearing deposit, making the cave one of the richest archaeological sites in Australia. “In terms of the number of stone tools,” Jones said to one journalist, “much, much richer than Mungo.”

The archaeological remains at Kutikina told a remarkable story. The tools appeared to be a regional variant of the “Australian core tool and scraper tradition”, found across the mainland during the Pleistocene, suggesting immense chains of cultural connection before the creation of Bass Strait. The bone fragments were also curious. Most had been charred or smashed to extract marrow, and almost all (95 per cent) were wallaby bones, suggesting a finely targeted hunting strategy, similar to that found in the Dordogne region in France.

But most surprisingly, underneath the upper layer of hearths, there were angular fragments of limestone that appeared to have shattered and fallen from the cave roof at a time of extreme cold, forming rubble on the floor. It was one of the main pieces of evidence that led Jones to speculate in his diary: “Is this the late glacial technology?”

Home to the southernmost humans on earth

The possibility of Ice Age dates conjured the image of a dramatically different world. Pollen records in the region revealed that what is now rainforest was once an alpine herbfield like the tundra found in Alaska, northern Russia and northern Canada. Twenty thousand years ago, the mighty trees of ancient Gondwanaland had retreated to the river gorges, where they were irrigated and sheltered from fire, while wallabies and wombats roamed the high, open plains above.

The cold blast of Antarctica, only 1000 kilometres to the south, had dropped temperatures by around 6.5 degrees Celsius. A 65-square-kilometre ice cap presided over the central Tasmanian plateau, feeding a 12-kilometre-long glacier that gripped the upper Franklin valley. Icebergs floated off the Tasmanian coast.

At the height of the last Ice Age, Kutikina was home to the southernmost humans on earth. The people of southwest Tasmania hunted red-necked wallabies on the broad open slopes of Franklin valley, they collected fine stone from glacial melt water gravels and chipped them into tools, and they sheltered beside fires in the mouths of deep, limestone caverns. “They alone,” Jones reflected, “may have experienced the high latitude, glacier-edge conditions of a southern Ice Age.”

Significantly, during a separate excavation near the confluence of the Denison and Gordon Rivers, archaeologists also discovered tools and charcoal dating to 250–450 years ago, long after the ice cap had melted and the rainforest had returned. It revealed that the river valleys of southwest Tasmania had a recent, as well as a deep, Aboriginal history.

The rediscovery of Kutikina made the front page of the local and national newspapers, and was discussed on the floor of Parliament, but, surprisingly, it was restricted to the margins of the conservation campaign. John Mulvaney later reflected on the productive, albeit tense alliance between archaeologists and conservationists during the campaign:

We claimed an Ice Age environment of tundra-like grasslands, where their dearly loved primeval forest was supposed to have stood eternally. By discrediting the image of a forest wilderness, we were ruining their image and battle cry!

Added to this tension was the animosity the Tasmanian Aboriginal community felt towards both the archaeologists, for fossicking on their land, and the conservationists, for suggesting they had never lived there. Their activism during the campaign had profound implications for the Australian archaeological community. But while Aboriginal leaders such as Rosalind Langford and Michael Mansell were eager to regain control of Kutikina – “the most sacred thing in the state” – they also recognised the value of the history that had been uncovered. As Mansell said:

The fact that the Aborigines could survive physically and culturally in adverse conditions and over such a long period of time … helps me counteract the feeling of racial inferiority and enables me to demonstrate within the wider community that I and my people are the equal of other members of the community.

At the 1981 Tasmanian Power Referendum, 47 per cent of the electorate voted in favour of the Gordon-below-Franklin dam. But, remarkably, there was also a 45 per cent informal vote. Tens of thousands of voters had scrawled “no dams” on their ballot papers. The unprecedented “write-in” had been organised by the Tasmanian Wilderness Society, led by Brown. It repeated this highly organised, campaign-oriented strategy at local, state and federal elections throughout 1982.

The federal leader of the Australian Democrats, Don Chipp, also recognised the mood of the electorate against the dam and in August 1981 he initiated a Senate inquiry into “the federal responsibility in assisting Tasmania to preserve its wilderness areas of national and international importance”. Jones, Mulvaney and the executive of the Australian Archaeological Association were among the many to make submissions to the new Senate Select Committee.

The Tasmanian Aboriginal Centre also made a submission, drawing upon the archaeological research to underline the cave’s “great historical importance”. But they also made a more personal plea. The Franklin River caves “form part of us – we are of them and they of us. Their destruction represents a part destruction of us.”

This advocacy had a profound influence. Several members of the Senate Committee flew into the Franklin valley to see the ongoing archaeological work and when the committee presented its report on the Future Demand and Supply of Electricity for Tasmania and Other Matters, the archaeology dominated the “other matters”. “Apart from any other reasons for preserving the area,” they concluded, “the caves are of such importance that the Franklin River be not inundated.”

Prime Minister Fraser heeded the conclusions of the report. He did not want the Franklin dam built, but he was reluctant to intervene in what he regarded as a state matter. So he did not act when construction on the dam began in July 1982.

Protests and political shifts

On 14 December 1982, the same day the region was formally listed as a World Heritage site for its natural and cultural value, a chain of rubber rafts blocked the main landing sites along the Franklin River, protestors occupied the dam site and rallies were held in cities across Australia.

Anti-dam protesters in southwest Tasmania, opposing the planned construction of the Franklin River dam, 1982.
National Archives of Australia

By autumn 1983, 1272 protestors had been arrested during the Franklin blockade, and nearly 450 had done time in Hobart’s Risdon Prison, including Mansell and Langford, who were charged with trespass on their return from visiting Kutikina.

While the blockade continued, and with a federal election just around the corner, the ALP made a snap change in its leadership on 3 February 1983. It replaced Bill Hayden, who had voted against Labor’s policy to stop the dam at the party’s national conference, with Bob Hawke, who had voted for it. And in a tumultuous few hours of Australian political history, Fraser called an early election on the same day. It would turn out to be a grievous political miscalculation.

Neither Fraser nor Hawke believed the Franklin River dispute decided the 5 March 1983 election, but the outgoing Deputy Prime Minister, Doug Anthony, was adamant: “There is no doubt that the dam was the issue that lost the government the election.”

On 31 March the new Hawke government passed regulations to prevent further construction on the Franklin dam. Tasmanian Premier Robin Gray took the matter to the High Court, challenging the constitutionality of Hawke’s “interventionist” legislation. His appeal failed by the narrowest of margins.

The judges in the majority considered that the Commonwealth had a clear obligation to use its External Affairs power to stop the proposed dam, as the inundation of “the Franklin River, including Kutikina Cave and Deena Reena Cave”, would breach the World Heritage Properties Conservation Act and damage Australia’s international standing. They also invoked the Commonwealth power to make laws with respect to Aboriginal people.

The Franklin River campaign has entered “the folklore of Australian environmentalism” as a green victory: a battle won, in Clive Hamilton’s words, through “the intrinsic worth of wild places.” But behind the scenes it was the deep Aboriginal history of the region that pushed the decision over the line. The archaeological evidence featured in every report about the judgement, and privately Malcolm Fraser considered it to be the deciding factor.

The ConversationThis is an edited extract from Billy Griffiths’ Deep Time Dreaming: Uncovering Ancient Australia (Black Inc., 2018).

Billy Griffiths, Research fellow, Deakin University

This article was originally published on The Conversation. Read the original article.