Oct 152013
 

News Release from the Institut de Recherche pour le Développement (IRD)

Is this the end of a scientific paradigm on the effects of climate change? It would seem that global warming is not intensifying the rise of cold deep water, a phenomenon known as ‘upwelling’, characteristic of certain coastal zones. For over twenty years, specialists have believed that climate change is reinforcing the trade winds at the origin of these phenomena, thereby cooling the surface water. A new study, led by a team from the IRD and its partners, off the coast of West Africa, has shown that this is not the case for the ecosystem of the ‘Canary Current’. On the contrary, it reveals that the coastal waters from Morocco to Senegal have been getting warmer for the past 40 years.
Upwelling phenomena. Image: Lichtspiel, IRD

Upwelling phenomena. Image: Lichtspiel, IRD

Ecosystems at the heart of concerns

Assessing the effect of climate change on upwelling ecosystems is essential to be able to predict the future of marine resources. The zones concerned by this upwelling of cold deep water, which is very rich in nutrients, provide up to 20 % of global production of fish. Since the 1990s, the theory adopted by the majority of the scientific community affirmed that these phenomena were intensifying. The rising temperatures of the air masses above the continents were expected to quicken the trade winds, which would in turn increase the upwellings, thereby cooling the surface water. But this theory has been contradicted by the recent work of researchers from the IRD and its partners.

Coastal waters are getting considerably warmer

In their new study, led off the coast of North and West Africa, the scientists reviewed the wind measurements taken over the past 40 years and the data of the meteorological models along the Spanish and West African coastline, and discovered that they do not show an acceleration of the wind on a regional scale that would be likely to significantly cool the coastal waters. In fact, quite the opposite is true, since the satellite images and in situ measurements of the surface water temperature show a distinct upward trend in the temperature for the entire zone, at a rate of 1°C per century. These new findings contradict the hypothesis that the upwelling of the Canary Current is intensifying.

Ngor in Senegal. Photo: C. Costantini, IRD

Ngor in Senegal. Photo: C. Costantini, IRD

A reinterpretation of the paleoclimatic data

Until now, the study of this ecosystem focused primarily on paleoclimatic reconstructions based on samples of marine sediments. According to the geochemical analysis of these samples, planktonic organisms have evolved in an increasingly cold environment over the last few decades. This led scientists to conclude that the temperature of the surface water was dropping. But in view of the new findings, the oceanographers have put forward another explanation: the thermal signal deduced from the paleoclimatic data is due to a progressive migration of plankton towards the depths because, on the contrary, the surface water is getting warmer!

The reaction of the coastal ecosystems to climate change remains complex, because it depends greatly on local specificities – other upwelling systems, such as that of the California Current, clearly show a trend of intensification and cooling of the water in recent decades. At the level of the ecosystem itself, the effects of the warming of the surface waters can be antagonistic: it can for example encourage the growth of fish larvae, but also increase the temperature gradient between the surface water and the deeper water and thereby modify the food chain, etc. Researchers will now have to address all these questions.

Oct 132013
 

Original story by , The Canberra Times

Tropical fish will reach the south coast of NSW in a matter of decades, posing a grave threat to local fish and native kelp forests.
A unicorn fish.

A unicorn fish.

University of NSW research fellow Erik van Sebille says climate change is dramatically heating the ocean off eastern Australia, prompting tropical fish to migrate south to find waters of suitable warmth.

The oceanographer says unicorn fish, pictured, and surgeon fish, usually found in coral reefs, have been found near Sydney and, if nothing more is done to fight climate change, they will make it to the south coast of NSW.

"It's basically one big musical chairs, where all of the species living along the east coast of Australia have to move southwards to keep in line with their preferred temperature habitat," he said.

"Given how far [tropical fish] have come already in the last 30, 40 years or so, it can't be more than a few decades before they come to Batemans Bay."

Elsewhere tropical fish have devastated underwater kelp forests, leaving behind a "desert of the sea", he says.

Overseas examples show tropical fish are used to eating coral, which is hard to digest, so they eat the nutritious kelp forests quickly, destroying whole ecosystems.

"It might come back after a few years, maybe 10, 20 years, but particularly for the fisheries industry, of course, that's a long time to wait," Dr van Sebille said.

He is working with a team of UNSW biologists and climatologists and will present his research at this week's Greenhouse 2013 conference in Adelaide.

He says the stretch of water between Newcastle, NSW and Tasmania on the east coast of Australia is warming faster than almost anywhere else in the world.

According to the Intergovernmental Panel on Climate Change's latest report, it has warmed 2C over the past century.

Modelling under the ''business as usual'' scenario suggests it will warm up an extra 5C in the next 100 years.

Dr Van Sebille's team is researching how Australian tropical fish interact with kelp forests and how the forests can be made resilient to their threat.

"You want the kelp to have its best possible defence and to be as prepared as possible, so anything that deteriorates the quality of the kelp wouldn't help, anything that overuses the kelp wouldn't help," he said.

If strong action is taken to prevent climate change, warming in the eastern current can be quite limited, Dr van Sebille says.

"There are a lot of things that are uncertain in the climate model, and probably the biggest uncertainty is really what the policy is going to be, how much CO2 is going to come into the atmosphere," he said.

Oct 122013
 

ABCOriginal story at ABC News

Federal Agriculture Minister Barnaby Joyce says the Top End can increase its irrigated farming output without having to dam more tropical rivers.

Mr Joyce is in Darwin to open an Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES) regional summit today.

Ord River West Bank Posted Thu 10 Oct 2013, 12:28pm AEDT  Federal Agriculture Minister Barnaby Joyce says the Territory can create more irrigated croplands after the expansion of the Ord River project from Western Australia. Photo: Tyne McConnon

Ord River West Bank Posted Thu 10 Oct 2013, 12:28pm AEDT Federal Agriculture Minister Barnaby Joyce says the Territory can create more irrigated croplands after the expansion of the Ord River project from Western Australia. Photo: Tyne McConnon

He says the Territory can create more irrigated croplands, with the expansion of the Ord River project from Western Australia into the Northern Territory and using water from the aquifers in the Katherine region, about 300 kilometres south of Darwin.

The minister told ABC local radio in Darwin that the focus would likely be more on aquifers, rather than damming rivers such as the Daly and the Roper.

"We are more inclined to look towards the areas where there is potential for expansion," he said.

The Territory agricultural community will be able to voice their concerns at the summit.

ABARES chief commodity analyst Jammie Penm says the conference will include participants from all farming sectors, the Tiwi Land Council and the weather bureau.

He says the conference is about better understanding the needs, challenges and opportunities in regional Australia.

"[We will] discuss a number of issues, including Asian markets and maybe and abattoir for the regions, the possibility of expanding export performances," he said.

Mr Penm says information will be channelled into research and development in support of rural exports.

He says it is important the northern Australia gets a say.

"Our role in Canberra is not to lord over other people"

Barnaby Joyce, Federal Agriculture Minister

The ABARES conference in Darwin is one of seven one-day regional outlook summits being held around the nation.

Meanwhile, Mr Joyce says he won't stand in the way of Indonesian plans to buy two cattle property leases in the Territory.

He says the Northern Territory Cattlemen's Association has lobbied hard for the sale to go ahead, and he will not interfere.

"Our role in Canberra is not to lord over other people," he said.

"If this is what Territorians want, if this is the direction that they wish to go, then it is my job to support it.

"It is leasehold country, in any case.

"You are not buying anything and you have got to deal with all the requirements of leasehold country that other people are dealing with."

However, Mr Joyce said he had not changed his views on all foreign investments in Australian agricultural land and enterprises.

"When I have a major concern about an issue such as GrainCorp, they say, 'well you don't believe in foreign investment'," he said.

"And when I say well I am at ease with the sale of a couple of leases to Indonesian interests, they say you have deserted your philosophies and you are a hypocrite.

"I don't know how you win."

Mr Joyce also said the Territory would need to rely on private capital, not government funds, for much of its infrastructure development.

He told the conference that his plans for northern Australia were realistic, not poetic, and predicted Darwin could become a more dominant Australian city than Adelaide.

Oct 122013
 

Media release from the ARC Centre of Excellence for Coral Reef Studies at SciNews

In a world-first, scientists from the ARC Centre of Excellence for Coral Reef Studies (CoECRS) have shown that tropical corals have the ability to fight back against acidifying oceans caused by human emissions of carbon dioxide.

Plate coral (Fungia sp.) in Papua New Guinea. Photo: Brocken Inaglory/Wikimwedia Commons

Plate coral (Fungia sp.) in Papua New Guinea. Photo: Brocken Inaglory/Wikimwedia Commons

While the threat of coral bleaching from higher sea-surface temperatures and direct human impacts still present serious risks to the long-term prospects for coral reefs, the research findings suggest that many corals have the ability to largely offset the effects of increasingly acidic oceans.

Lead researcher, Prof. Malcolm McCulloch, will discuss his team’s findings at the 'Coral Reefs in the 21st Century' symposium in Townsville on Friday 11th October.

“Using a new boron isotope technique we were able to calculate the effects of the acidification process on coral growth rate,” says Prof. McCulloch of the University of Western Australia and Deputy Director of CoECRS.

“We’ve looked at many species of corals, including deep sea corals, and found that almost all of them are able to reduce the acidity – or pH – of the seawater they take in, adapting the chemistry of this seawater and hence enabling them to more efficiently extract this important material needed for building their coral skeletons.”

This process of ‘buffering’ seawater – raising its pH – only takes up a relatively small amount of energy and provides significant benefits to the coral. However Prof. McCulloch cautions that corals still face serious risks from climate change.

“In terms of ocean acidification, our research model showed predictable but generally small effects on the future ability of tropical corals to build skeletons, something that is not only critical for their individual growth and survival but for the health of coral reefs in general.

“But the rapid and often abrupt increases in ocean temperatures that are expected over the next 100 – 200 years are also likely to cause serious episodes of coral bleaching and when this happens the bleached corals are unable to function properly," he says.

“Corals in this state will probably not be able to modify the chemistry of seawater they take in – an important part of the skeleton-building process – meaning that the effect of ocean acidification would be felt at exactly the time when it is most unwanted.”

According to Prof. McCulloch, other skeleton-building marine species, including some sponges and giant clams are unable to modify the acidity of the seawater they use to extract building material and these species may be even more vulnerable to the effects of climate change.

The research team is continuing to examine a wide range of marine species that build skeletons in order to better understand the capacity of these organisms to modify their internal seawater chemistry. In doing so they hope to be better able to predict the relative impact that climate change may have on different marine species.

‘Life at the edge: the role of pH upregulation in marginal environments’ will be presented by Prof. McCulloch at the Coral Reefs in the 21st Century symposium.

The symposium will feature talks by more than 30 eminent coral reef and fish scientists on the future of these vital marine ecosystems and the industries and communities which depend on them.

The symposium and public forumare being held at the Rydges Southbank, Townsville on Thursday October 10 and Friday October 11. Symposium Program details are available at:
http://www.coralcoe.org.au/news-events/symposia/coral-reefs-in-the-21st-century-townsville/symposium-program-coral-reefs-in-the-21st-century

The paper relating to this talk “Coral resilience to ocean acidification and global warming through pH up-regulation” by Malcolm McCulloch, Jim Falter, Julie Trotter and Paolo Montagna appears in the journal Nature Climate Change
http://www.nature.com/nclimate/journal/v2/n8/full/nclimate1473.html

Further information please contact:
Prof. Malcolm McCulloch, CoECRS and UWA, +61 (0) 457 939 937 or
malcolm.mcculloch@uwa.edu.au
Jenny Lappin, CoECRS, +61 (0)7 4781 4222

www.coralcoe.org.au

Oct 112013
 

Original story by Josh Bavas, ABC News

An Australian invention is dramatically improving the marine health of one of Queensland's busiest waterways, Moreton Bay.
Boat mooring invention helps save south-east Queensland's dugongs. Dugong feeds on seagrass in Moreton Bay. Photo: South-east Queensland Catchments

Boat mooring invention helps save south-east Queensland's dugongs. Dugong feeds on seagrass in Moreton Bay. Photo: South-east Queensland Catchments

Newly-designed boat moorings are protecting endangered seagrass habitats, bringing native marine animals like dugongs back in herds.

Moreton Bay is home to the largest population of dugongs living near an urban centre but about 15 per cent of their food source in the bay has been scratched away from boat chain moorings.

That is similar to an area roughly the size of 90 football fields.

Joel Bolzenius from environmental group South East Queensland Catchments says the threat to the food source of hundreds of species is ever-growing.

"Boat moorings we've seen over the decades - the number of moorings and the number of boats - actually increase," he said.

About 1,000 dugongs call Moreton Bay home.

Dr Janet Lanyon from the University of Queensland has been studying Australia's dugong species for 30 years.

She says maintaining a stable food source for the mammals is paramount.

"Maintaining good, healthy seagrass beds, and of the species that dugongs like to feed on, is absolutely critical for their survival," she said.

Australian invention wins top award

Australian boat mooring invention that helps save south-east Queensland's dugongs. Photo: South-east Queensland Catchments

Australian boat mooring invention that helps save south-east Queensland's dugongs. Photo: South-east Queensland Catchments

The invention by Des Maslen, a boatie from New South Wales, won a top award on ABC's The New Inventors program in 2007 for developing an environmentally friendly boat mooring device.

The mooring works by replacing mooring chains with a floating plastic rope, connected to a floating suspension buoy.

A series of the new devices were installed at more than 100 sites in Moreton Bay last year, thanks to about $450,000 in federal funding and about $50,000 from the Queensland Government.

That is allowing sea-grass to grow back across an area of about 120 hectares.

Dugong population increasing

Macleay Island resident Lindsey Rusbatch says he is now seeing dugongs at locations near the island for the first time in years.

Boat using new mooring invention in Moreton Bay. Photo: ABC News: Josh Bavas

Boat using new mooring invention in Moreton Bay. Photo: ABC News: Josh Bavas

"We've lived here for 12 years and we've never seen a dugong until about three or four months ago," he said.

"We've seen a lot of female dugongs we think with young ones with them."

Scientists have also been studying the impact of floods in the last three-and-a-half-years on local marine life.

Dr Lanyong says alarming levels of heavy metals have been found in Moreton Bay dugongs.

"There was a loss in body condition and dugongs need to maintain good body condition to get into reproductive condition," she said.

About a fifth of boats moored in seagrass habitats in the bay are using the new devices.

Environmental groups are now trying to source the money to install the remaining 400 moorings in seagrass zones at a cost of about $2 million.

Oct 082013
 

Murray's critically endangered listing worries irrigatorsOriginal story at ABC News

Murray listing worries irrigators

Murray listing worries irrigators

The National Irrigators Council is urging decisive action to stop part of the Murray having a "critically endangered" status.

The stretch of river from Wentworth in New South Wales to the Murray mouth, south of Adelaide, was listed under the Environment Protection and Biodiversity Conservation Act back in August, a day before the federal election campaign began.

The listing means any development along the river could require federal approval.

Irrigators Council chief executive Tom Chesson said that could mean more red tape for river communities and discourage development.

"As fishermen, as campers, as people who use the houseboats, we're concerned that it will impact everyone," he said.

"If you wanted to go and build a new road or a new subdivision that potentially could trigger this."

The Federal Government has 15 parliamentary sitting days to disallow the motion.

Mr Chesson is urging state governments to do more to ensure the endangered listing is reversed.

Oct 072013
 

Original story by , Sydney Morning Herald

Turns out it's the little things we need to worry about in climate change. When they're in trouble, a great polar ecosystem may be, too.

Antarctic krill are under threat. Image: Australian Antarctic Division

Antarctic krill are under threat. Image: Australian Antarctic Division

The oceans are now absorbing so much carbon dioxide they are acidifying at an unprecedented rate, according to the International Program on the State of the Ocean.

Geological records show the current acidification is unparalleled in at least the past 300 million years, IPSO's latest State of the Ocean report says.

''We are entering an unknown territory of marine ecosystem change, and exposing organisms to intolerable evolutionary pressure,'' it says.

The smallest of these creatures in the remote Antarctic marine ecosystem are said to be showing some of the earliest signs of acidification damage. And work by Australian scientists shows greater problems lie in store for the creatures at the centre of the Antarctic food web - krill.

Environment Minister Greg Hunt pointed to warnings of increasing ocean acidification as the most important new advice from the Intergovernmental Panel on Climate Change's latest report.

''In the debate around climate change, research on acidification of the oceans is a particular personal concern,'' Mr Hunt said. ''This has been reinforced by the work of Australian scientists, particularly in the Antarctic.

''The Southern Ocean is specially vulnerable to increased acidity because of the cold water and the type of marine life. If there are changes in these environments, then there is a flow-on impact across the entire marine system.''

The Oxford-based IPSO scientists reported widespread global effects, including the erosion of coral reefs, tipping past their building rates as soon as 2030 to 2050.

But they say the rate of acidification is 50 per cent faster in the higher polar latitudes than in subtropical waters, because of the effects of temperature on ocean chemistry.

''Think of it like a cold beer at a barbecue,'' said Donna Roberts, of the Antarctic Climate and Ecosystems Cooperative Research Centre at the University of Tasmania. ''It holds onto its carbon dioxide bubbles longer. Remember that 40 per cent of all the carbon dioxide going into the oceans goes into the Southern Ocean. It's going to hit high, and hit hard.''

Dr Roberts said work on tetrapod snails showed distinct acidification effects. ''We're finding evidence that shell structure has been getting softer since 1997,'' she said.

Similar problems face foraminifera, countless micro-organisms that also rely on calcium carbonate for their structure.

But it is the keystone Antarctic species, the shrimp-like krill, that is a focus of concern about future acidification.

Biologist So Kawaguchi said krill were already experiencing changing climate stressors such as rising temperatures and changes in their planktonic food production.

In an aquarium world with carbon dioxide elevated at predicted rates, krill eggs failed to develop properly, Dr Kawaguchi said.

If emissions were to continue to rise, by 2300 krill would be unable to hatch in vast areas of the Southern Ocean.

The Antarctic Division's chief scientist, Nick Gales, said work was beginning on the flow-on effects of the loss of krill.

''Animals that don't have the flexibility to prey-switch are likely to be more in trouble,'' Dr Gales said.

''Among the whales, it would be the blue whale and the Antarctic minke which are reliant on krill. And there is a whole range of seabirds.''

Oct 052013
 

Original story by Trent Dalton, The Australian

Juergen is the biggest crocodile captured by Australia Zoo.

Juergen is the biggest crocodile captured by Australia Zoo.

HER dad died when she was eight years old. In the days and weeks after his death she developed a profound fear that awful things were inevitably going to happen to the ones she loved most in her life - her mother, Terri, and younger brother Robert. To combat this fear she developed an ambitious and exhausting plan to never let her mother and brother out of her sight.
Bindi reads a speech at her father's memorial service. Photo: AFP

Bindi reads a speech at her father's memorial service. Photo: AFP

"Step back a bit, Robert," whispers Bindi Irwin, her left arm drawing her nine-year-old brother two steps backwards into a patch of dry, straw-coloured grass lining the bank of the Wenlock River, Cape York Peninsula, giving him enough space to escape the jaws of an unrestrained 4.7m crocodile named Juergen. "You know your exit?" she asks.

Her grandfather, Clarence Raines, died when she was 10 years old while she was visiting him in her mother's hometown of Eugene, Oregon. Raines, a World War II veteran, was a man of some renown. He'd served his country, served his community in the local police force and, upon retirement, served his mind by reading every book in the Eugene Public Library. Bindi sometimes flips through the journal her grandfather kept documenting that remarkable feat, running her tanned forefinger along the endless names of authors and their works, listed A-to-Z. The journal makes her think anything can be achieved in a lifetime with the assistance of time and desire.

Terri pounces on Juergen the croc. Photo: AFP

Terri pounces on Juergen the croc. Photo: AFP

When Juergen moves, the earth vibrates. The 900kg croc has been on this Earth for 60 years, spending a good portion of that time swimming the food-rich, pristine waterways of the Steve Irwin Wildlife Reserve - a 135,000ha Cape York floral and faunal sanctuary created by the Howard government in 2007. It's run by the Irwin family as a living memorial to the irrepressible conservationist who was fatally pierced in the chest by a stingray barb while filming an underwater documentary on September 4, 2006.

Robert points to a loose path running between two stringybark trees. "I'll run away along here," he says. Bindi nods, satisfied.

Her parents named her "Bindi" from the Aboriginal term for "young girl". During the 10-hour labour that brought her into this world 15 years ago, a documentary film cameraman was recording the event from the head of her mother's hospital bed. Terri Irwin has come to the conclusion that her daughter possesses the soul of an 86-year-old. She looks at her now and sees a young woman in bloom, a girl finding her place in the world, in private wonder and in the public eye. She sees a lover of science, books and films; the girl who wrote a 1000-word essay on the environment for US Secretary of State Hillary Clinton's global e-journal and then publicly slammed the editors when they deleted the essay's edgier passages about the perils of overpopulation and "too many people using too many resources". She sees a 15-year-old already studying a Certificate 3 in business and tourism at Sunshine Coast University. She sees a writer of poetry and handwritten letters to friends, a reader of Shakespeare and German poets Terri wouldn't have dreamed of exploring in her teens. She sees the girl who wakes up every morning and plays DVDs of her father's wildlife documentaries. She sees the future.

The first thing Bindi does in a crocodile capture is to establish a clear exit path should the crocodile - an archosaurian monster built some 200 million years ago as much for survival as for killing - decide to turn about-face and attack his well-intentioned if physically pathetic human captors. She scans the capture site, at a shady point along the Wenlock known as "Jutout". The bait - a fly-blown feral pig carcass - is raised into the air by two sandbag weights. It smells like death, drips thick burgundy blood into a puddle two feet from Juergen's swinging sawtooth tail. It's warm and humid. High tide. There was no moon last night, no wind blowing on campsite tents - the sort of conditions in which Juergen felt comfortable enough to explore that tempting aroma of pig gut wafting across his 65cm head.

Bindi kneels down to study his skin. His marvellous structure. She sees bite marks atop Juergen's head shields. His webbing is split in his left foot. Juergen's getting on. He lived through the Vietnam War, through The Beatles. He's getting slower. He's been getting bullied by younger, quicker crocodiles in the Wenlock. Juergen can withstand anything except the march of time. "We humans always want to overpower things, don't we?" she whispers. "We could never overpower these animals."

There's a quiet tension at the capture site. Silence and fear. "There's always that spark of electricity," she says. "No matter how many times you see them."

For 10 years Bindi has watched University of Queensland zoologist Professor Craig Franklin trap and track 110 crocodiles through these waters with a team of researchers and animal wranglers from the Irwins' 40ha Australia Zoo, on Queensland's Sunshine Coast. She's been a fixture in the longest-running zoological research project in the world, making groundbreaking discoveries into the behaviour and physiology of crocodiles in the wild. They've developed world-leading technologies, painlessly fixing satellite tracking units to the concrete-like backs of crocodiles' heads. It was this team that discovered crocodiles can stay underwater for seven hours; that crocodiles can travel 60km in a single day; that they are affectionate lovers; protective parents; judicious thinkers. It was this team that revealed the crocodile's remarkable homing abilities; watched a crocodile that was airlifted from the west coast of Cape York Peninsula to the east coast navigate its way back around the cape, swimming 400km in 20 days to return home, at one point shifting direction from north to south. "How?" Franklin ponders. "I don't know."

Bindi has assisted the professor in so many insertions of acoustic underwater movement tags that she could conduct the operation herself. "I love the science side of it," she says.

Juergen is the biggest crocodile the team has ever trapped, an armoured behemoth with a sinister prehistoric growl - a bubbling and gassy lava pit in the depths of hell - that suggests self-awareness of its untouchable status as Earth's largest terrestrial predator.

Juergen's blood has been tested. The telemetric "ping" tracker that was placed inside his thick skin this time last year has been registered and Franklin is a little closer to finding out where these mysterious creatures go at night, what they eat, what they need to survive, how vital they are to the ecosystem, what they can tell us about our long-distant past and our precarious present.

Juergen's free to go. Catching is easy; releasing is hard, and terrifying for the uninitiated. It's a heart-racing nerve test as a predator the size of a large sofa creeps freely and slowly out of an open rope trap. Two of the team's lead crocodile handlers, Toby Millyard and Stuart Gudgeon, cautiously circle the hulking beast like gladiators armed only with long bamboo sticks to gently direct Juergen towards the river. There's a distinct tremor in Millyard's voice as he hollers a warning to his support crew of six zoo workers: "OK, everybody back up, this is when he could go absolutely anywhere. Nobody turn their back on it."

The crocodile pauses. "He's building up energy," Bindi whispers. "He's getting ready to thrash. So the guys have to be careful because he can headshake and his head is like one big chunk of steel. Dad caught a crocodile years and years ago. It came back on us. He came our way. We were running through tall grass, no idea where it went, running and running. It just turned."

She remembers her dad in this world. She remembers carrying his knife belt. She remembers him holding her little brother in his arms. She sometimes stares at Robert and marvels at how much he resembles her dad. His mannerisms, his speech, his recklessness, his courage, his tenderness. She loves Robert more than life itself. But they sometimes butt heads, like any brother and sister. Last night her mum told her that if she can get along with her brother she will be well prepared for marriage because the key to a happy marriage is learning not to torture the one you love the most.

She looks at Terri. White denim jeans, khaki shirt, long brown hair with a fringe; she stands five metres from the crocodile's head, her legs weighted for quick movement, one eye on the beast, one eye on her children. When Bindi was eight, nine, 10 years old she'd wander into her mum's room at night, curl up in her arms and ask her to tell a story about her dad. Adults tell her time heals all wounds but she doesn't believe that; or at least thinks those adults are referring to time frames longer than seven years.

"Dad was the strong one in the family," she says. "It was hard to process that. The strongest one died. Wait, how does that work?

"You know, to lose someone like that, it's kind of like losing a part of your heart," she says. "You're never going to get that back. That's just a fact of life."

Not long ago a young girl - a fan of Bindi's globally syndicated kids' wildlife TV shows and her big-budget Hollywood movies like Free Willy: Escape from Pirate's Cove andReturn to Nim's Island - approached her with a soft-voiced question: "How did you cope?" She copes through a single thought: that everybody says goodbye in their own way. "We spent a month catching crocodiles with Dad," she says. "That was our goodbye, that whole month we spent with him before he died. We'd go out in the afternoon and sit in the dinghy and watch fruit bats go over us as the sun was setting."

Her mum often has dreams about her dad. The dreams always take place in mundane domestic settings. Steve's still alive and they're talking like everyday parents about their children, their day. The dreams feel so real, so normal, that when she wakes she is hit once more with the gut-punch of loss.

Her mum doesn't date. She hasn't tried to fall in love again. Terri puts it like this: "I kind of feel like I already had my 'happily ever after' and I'm almost living another life." Her life is devoted to her children and her business, Australia Zoo. When she shakes your hand she says: "I'm sorry if I smell like snake wee."

She calls this disappearing. There are days when she has to take her children away from it all, from the zoo, from business, from TV, from make-up, from praise, from criticism. She knows what's out there. Public life has positives and negatives. She never has to explain to strangers why her children don't have a dad but she does have to filter abusive messages on her daughter's Twitter account. She knows she divides opinion. She knows there are people out there who criticise the way she's chosen to raise her kids but nobody questions her more than she questions herself. "Everyone can have an opinion," she says. "I'm not gonna get bogged down in whether or not someone thinks what we're doing is right or wrong. We all think we're screw-ups to a certain degree as parents. We're all trying our best. That's what I'm doing. But I reckon it's about just loving your kids."

She turns 50 next year. She's been asking herself lately: "How many more years, really, can I fly through the air and land on a croc?" These trips to Cape York are as much about science as they are about legacy, about knowledge transfer. It's a pilgrimage. Bindi's dad is here, in the gentle river, in the sounds of the brolgas flying above their heads, in their stories.

"Steve lived his whole life for this kind of research," Terri says. "It's not going to stop. As long as my legs work I won't stop. There's no research project that has funding in perpetuity. I want to be that research project." Over 10 years she estimates she's poured $3 million into this research. She will go broke to ensure it continues. She will lose everything to keep it going because, she says, the whole surreal "crikey" Crocodile Hunter dream was only ever about spreading a better understanding of animals. "It's always been about the science," she says. "But formal science makes boring television."

Juergen sticks his head out of the trap net. "Let's be real careful not to upset him guys," Terri says. He turns his head left and spots the water. Then, unexpectedly, he arcs his neck right, towards his audience, causing a ripple of disquiet through the team. Bindi silently pulls Robert two more steps back into the scrub lining the riverbank. Heartbeats. Thumping heartbeats. Then the crocodile shifts left and shuffles into the river. Deep inhale. Long exhale. "Well done," Terri hollers.

The research team busily resets the crocodile trap, dropping sandbag weights and rebuilding a makeshift natural entry out of found logs.

Robert runs off towards the team's tin boats tied to trees at the riverbank. He swings on tree limbs, leaps over rocks, sings a few random lines of Gangnam Style. Bindi and Terri watch him fall and crash and dance in dust. "Dad would have loved this," Bindi says.

A sign is stuck to the unisex toilet saying "Neanderthal wees" are encouraged for men to save on camp water. Campsite cooks prepare Wenlock River barramundi pancakes. Kettles boil on the campsite stove. Team members make toasted jaffle sandwiches from last night's chicken curry. A heavy branch drops from a towering tree and lands near the communal campfire square. A found snake sleeps in a green drawstring bag on the dinner table. At the ping-pong table, Robert attempts to better his record of 18 consecutive backhand returns.

Franklin quietly approaches Terri, who is resting in an armchair and checking messages on her phone. He bears bad news. He's just been informed Queensland's Newman government intends to remove crocodiles, regardless of size, from the northern bank of Trinity Inlet in Cairns to Ellis Beach, about 50km north, taking in the Barron River where, six days from now, on September 3, a 2.5m crocodile will be trapped by government rangers.

State environment minister Andrew Powell will put a public call out to "private contractors" to commit to the 12-month crocodile removal trial as part of the state's crocodile management plan. "While this is crocodile habitat, it is also an area where 160,000 people live and tourists come to visit," Powell says. Under the plan, crocodiles will be "captured, trapped or harpooned" depending on the animal's size and behaviour: "All crocodiles removed from the wild are placed in a zoo or crocodile farm or, in some cases, humanely euthanised".

The Cairns Post will run a headline: "Calling all croc wranglers to Cairns". The Queensland government has declared open season on Cairns crocodiles. "There's plenty of room for crocodiles in North Queensland but not in or near waters frequented by numbers of people, especially children and tourists who are not crocodile savvy," says the Member for Barron River, Michael Trout. "The ever-present threat of crocodiles has been a constant source of concern for the parents of surf lifesaving nippers. This will be a big task, which is why we are asking private operators to help us make our waterways safer."

Franklin walks into the campsite's makeshift IT room, a mess of power boards, camera chargers and laptops. He immediately sends an email to Powell. Last year he brought Powell to the Steve Irwin Wildlife Reserve to give him a first-hand insight into crocodile behaviour and their critical role in stabilising the ecosystems of North Queensland. He wants no association with this decision. "With your course of action," he writes, "my belief is that, regrettably, an attack will happen at some time in the future given that the general public and tourists will be led to the false belief that you can swim in crocodile habitat."

Franklin is as dumbfounded as he is gutted. "It will probably be some unfortunate tourist who heard about 'Proactive Removal Zones' in Cairns and who believes it is safe to swim in the Daintree River," he says. "It's a mixed message. Education is everything.

"I went through this with him last year. I sat him down. I went through all our discoveries. I showed him why you will never be able to guarantee that you will exclude crocodiles from a crocodile habitat. It's very difficult to patrol 60km of water and that's the area of water you need to cover to ensure an animal doesn't swim in there. You won't pick up every animal. They can spend 70 per cent of their day underwater. You will never know how many crocodiles are actually there."

Terri rubs her temples. "It makes my head hurt," she says. "There you go. The writing is on the wall. It will be the next community, the next river, the next town and then ... " She shakes her head, not wanting to voice her next thought.

Her daughter voices it for her. "There goes the species," Bindi says.

"There's always been crocs there and there will always be crocs there," Terri says. "Only now you're completely disrupting the balance. You're making things truly dangerous. And it's ultimately not going to change anything except people won't see the crocodiles as much. Which is phenomenally dangerous. How gut-wrenchingly sad will it be if some kid gets taken because someone decided we had a croc-free zone?"

Bindi rests a hand on her mum's shoulder. For the past seven years she has watched her mother fulfilling her dad's dream on this wildlife reserve. Each year she's watched that dream grow more endangered. She has learnt the hard way that nothing lasts forever. The Irwins can withstand anything except the march of time.

There are 154 native birds on this reserve, 43 reptile species, 18 amphibious species, 15 mammals and 43 freshwater fish species. There's a rare palm on the edge of the Wenlock River that takes 60 years to grow out of its surrounding tropical tree canopy and find the sun. It flowers briefly, only once in its life, and dies.

In October last year, the Queensland government declared bauxite mining company Cape Alumina's long-planned Pisolite Hills mine and port project - located between 2.8km and 15km from the Wenlock - a "significant project for which an environmental impact statement is required". The company expects the project to boost Queensland's economic activity by $1.2 billion, $600 million in Far North Queensland alone. It expects to create 1700 jobs over the course of the mine's 15-year life, a boon for local indigenous communities. Subject to permits, Cape Alumina expects to be in production by 2015. Terri believes the project will threaten vital natural springs on the reserve and in turn the reserve's unique biodiversity: "Removing any bauxite from this plateau would destroy the springs, rainforest, a previously undescribed ecosystem, and affect countless species right through the Wenlock River."

Cape Alumina's managing director, Graeme Sherlock, says he "agrees with Mrs Irwin that the small, perennial springs on western Cape York have environmental values that should be protected". The company has identified more than 150 of these springs on western Cape York, of which fewer than 10 per cent occur within the project area. It says it will maintain "extensive buffer zones" around them.

It's cold comfort for Terri. When they first arrived at Stone's Crossing this year, pulled up at the glorious river crossing that provides access to the reserve local bushies call "Steve's Place", Terri turned to Bindi with a grim smile: "Well, another year the place is safe".

They drive to Stone's Crossing now. Bindi sits in the middle seat of a road-rocking LandCruiser. Robert bounces in the rear seats behind her. They drive through the reserve's colourful acres of plant life, through rare floral wonders from which Griffith University scientists have been collecting samples for experiments in natural compounds to combat everything from cancer to malaria to TB. The reserve is a global research go-to zone. There are scientists from around the world conducting research here on bird-eating tarantulas, rare ground lillies, palm cockatoos, speartooth sharks.

Bindi looks out her window. "If there was one thing losing Dad taught me it's that life is fragile," she says. "You might be here one day and the next you might be gone. I felt that with Dad. It was like Dad was a hurricane. He really had this sense of urgency about him. Because he knew, I think."

She nods, slowly forming the words in her head. "At some level, he knew he wasn't going to be here long. So he'd always try and do everything he could right now. And looking back, I can see why. I mean, he didn't have that long. I don't know how long I have. I might have 80 years. I might have 20 years. I want to carry on in Dad's footsteps. As I get older, I'd love to start tackling bigger issues. I'm going to take that time I'm given and use it wisely and use it all."

The Irwins pile out of the LandCruiser at Stone's Crossing, where clear water rushes over river boulders so smooth and round they look like ten-pin bowling balls. Robert spots a sloping sand dune along the riverbank. "Mum, can I jump off that?" he asks. She nods her head, reluctantly. The boy doesn't stop moving. His interest in the world is insatiable. He wants to touch it, hold it, bury himself in it. "Hey Mum," he says, two fists clenched at his chest in enthusiasm. "I've created a new word. It's a mix between 'awesome' and 'great': 'Awe-reat'."

He launches himself off the dune. He shows his mum a tree-climbing caterpillar rash running up the insides of his forearms, doesn't give it a second thought. "Hey Mum," he says. "I think I want to buy a Canon camera." He's saving up to buy a professional camera for wildlife photography. "I have to save up $365."

Bindi and Robert walk along a sandbank where they spot a slide mark indicating the presence of a croc roughly two metres long. Terri watches her children exploring the waters for signs. It's a quiet moment; just the sound of the river. "I miss Steve every day," she says. "I'm lonely. But I'm not afraid of being alone because I'm with Bindi and Robert. Before I met Steve, I'd always figured my lot in life was being the crazy spinster woman up on the block doing wildlife work." Her children wrestle and hug on the sandbank. "What we had was very special," she says. "I'm very grateful for it. Even if I'd known how it would end, I'd do it all again."

Terri walks up to her children and they explore the crocodile slide-marks together. "I reckon that's a 10-footer," Robert says. Terri nods. "Looks recent," Bindi says.

"Oh, that's recent," says her mum.

Oct 052013
 

Original story by Roger Harrabin, BBC News

The health of the world’s oceans is deteriorating even faster than had previously been thought, a report says.

Coral reef - Corals are likely to suffer as a result of the changes to our oceans

Coral reef - Corals are likely to suffer as a result of the changes to our oceans

A review from the International Programme on the State of the Ocean (IPSO), warns that the oceans are facing multiple threats.

They are being heated by climate change, turned slowly less alkaline by absorbing CO2, and suffering from overfishing and pollution.

The report warns that dead zones formed by fertiliser run-off are a problem.

It says conditions are ripe for the sort of mass extinction event that has afflicted the oceans in the past.

It says: “We have been taking the ocean for granted. It has been shielding us from the worst effects of accelerating climate change by absorbing excess CO2 from the atmosphere.

“Whilst terrestrial temperature increases may be experiencing a pause, the ocean continues to warm regardless. For the most part, however, the public and policymakers are failing to recognise - or choosing to ignore - the severity of the situation.”

It says the cocktail of threats facing the ocean is more powerful than the individual problems themselves.

Coral reefs, for instance, are suffering from the higher temperatures and the effects of acidification whilst also being weakened by bad fishing practices, pollution, siltation and toxic algal blooms.

Atmospheric threshold

IPSO, funded by charitable foundations, is publishing a set of five papers based on workshops in 2011 and 2012 in partnership with the International Union for Conservation of Nature (IUCN’s) World Commission on Protected Areas.

The reports call for world governments to halt CO2 increase at 450ppm. Any higher, they say, will cause massive acidification later in the century as the CO2 is absorbed into the sea.

It urges much more focused fisheries management, and a priority list for tackling the key groups of chemicals that cause most harm.

It wants the governments to negotiate a new agreement for the sustainable fishing in the high oceans to be policed by a new global high seas enforcement agency.

The IUCN’s Prof Dan Laffoley said: "What these latest reports make absolutely clear is that deferring action will increase costs in the future and lead to even greater, perhaps irreversible, losses.

"The UN climate report confirmed that the ocean is bearing the brunt of human-induced changes to our planet. These findings give us more cause for alarm – but also a roadmap for action. We must use it."

'Extinction risk'

The co-coordinator, Prof Alex Rogers from Oxford University has been asked to advise the UN's own oceans assessment but he told BBC News he had led the IPSO initiative because: "It’s important to have something which is completely independent in any way from state influence and to say things which experts in the field felt was really needed to be said."

He said concern had grown over the past year thanks to papers signalling that past extinctions had involved warming seas, acidification and low oxygen levels. All are on the rise today.

He agreed there was debate on whether fisheries are recovering by better management following examples in the US and Europe, but said it seemed clear that globally they were not.

He also admitted a debate about whether overall climate change would increase the amount of fish produced in the sea. Melting sea ice would increase fisheries near the poles whilst stratification of warmer waters in the tropics would reduce mixing of nutrients and lead to lower production, he said.

He said dead zones globally appeared to be increasing although this may reflect increased reporting.

"On ocean acidification, we are seeing effects that no-one predicted like the inability of fish to detect their environments properly. It’s clear that it will affect many species. We really do have to get a grip on what’s going on in the oceans," he said.

Oct 032013
 

Media release from Duke University at EurekAlert

Streams below fracking wastewater treatment show elevated salts, metals, radioactivity

DURHAM, N.C. -- Elevated levels of radioactivity, salts and metals have been found in river water and sediments at a site where treated water from oil and gas operations is discharged into a western Pennsylvania creek.Fracking wastewater pit

"Radium levels were about 200 times greater in sediment samples collected where the Josephine Brine Treatment Facility discharges its treated wastewater into Blacklick Creek than in sediment samples collected just upstream of the plant," said Avner Vengosh, professor of geochemistry and water quality at Duke University's Nicholas School of the Environment.

The new Duke study examined the quality of shale gas wastewater from hydraulic fracturing and the stream water above and below the disposal site. The study found that some of the discharged effluent is derived from the Marcellus shale gas flowback water, which is naturally high in salinity and radioactivity.

High concentrations of some salts and metals were also observed in the stream water. "The treatment removes a substantial portion of the radioactivity, but it does not remove many of the other salts, including bromide," Vengosh said. "When the high-bromide effluents are discharged to the stream, it increases the concentrations of bromide above the original background levels. This is significant because bromide increases the risks for formation of highly toxic disinfection byproducts in drinking water treatment facilities that are located downstream."

"The radioactivity levels we found in sediments near the outflow are above management regulations in the U.S. and would only be accepted at a licensed radioactive disposal facility," said Robert B. Jackson, professor of environmental science at Duke. "The facility is quite effective in removing metals such as barium from the water but concentrates sulfates, chlorides and bromides. In fact this single facility contributes four-fifths of the total downstream chloride flow at this point."

The Duke team also analyzed stream-bottom sediments for radium isotopes that are typically found in Marcellus wastewater. "Although the facility's treatment process significantly reduced radium and barium levels in the wastewater, the amount of radioactivity that has accumulated in the river sediments still exceeds thresholds for safe disposal of radioactive materials," Vengosh said. "Years of disposal of oil and gas wastewater with high radioactivity has created potential environmental risks for thousands of years to come."

"While water contamination can be mitigated by treatment to a certain degree, our findings indicate that disposal of wastewater from both conventional and unconventional oil and gas operations has degraded the surface water and sediments," said Nathaniel R. Warner, a recent Ph.D. graduate of Duke who is now a postdoctoral researcher at Dartmouth College. "This could be a long-term legacy of radioactivity."

Industry has made efforts to reuse or to transport shale gas wastewater to deep injection wells, but wastewater is still discharged to the environment in some states. "It is clear that this practice of releasing wastewater without adequate treatment should be stopped in order to protect freshwater resources in areas of oil and gas development," Vengosh said.

The Duke team published their findings Oct. 2 in the peer-reviewed journal Environmental Science & Technology.

###

The Josephine Brine Treatment Facility is located in Indiana County, about an hour east of Pittsburgh. Blacklick Creek is a tributary of the Conemaugh River, which flows into the Allegheny River, a water source for numerous western Pennsylvania cities, including Pittsburgh.

Cidney A. Christie, who graduated from Duke's Nicholas School in 2013 with a Master of Environment Management degree, coauthored the new study, which was funded by the Nicholas School and the Park Foundation.

Reference: "Impacts of Shale Gas Wastewater Disposal on Water Quality in Western Pennsylvania" Nathaniel R. Warner, Cidney A. Christie, Robert B. Jackson, Avner Vengosh Published Oct. 3 in Environmental Science & Technology DOI: 10.1021/es402165b