Members of the Australasian Antarctic Expedition are rescued by a Chinese helicopter after their ship, the MV Akademik Shokalskiy, became trapped in ice. Credit: Andrew Peacock/

The Australian Antarctic Division (AAD) has added its voice to the growing criticism of a stricken private polar expedition by challenging claims that it approved the research element of the trip.

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On page 291 of this issue, Nick Gales, chief scientist of the AAD, which is based in Kingston, Tasmania, responds to an earlier Nature column by expedition head Chris Turney of the University of New South Wales (see Nature 505, 133; 2014). Turney’s Australasian Antarctic Expedition aimed to retrace the steps of explorer Douglas Mawson, who led an outing a century ago. But members of Turney’s expedition had to be rescued from their ship, the MV Akademik Shokalskiy, after it became trapped in ice at Christmas, adding fuel to a debate about the merits of such privately funded trips.

Gales challenges Turney’s implicit suggestion that the AAD had approved the expedition’s science plan. The AAD did not formally review the research strategy, Gales notes, but had issued the permits required for Turney’s group to visit the region in which it got stuck. “It’s an important distinction for us,” says Gales. He adds that the expedition’s rescue has delayed several projects in Australia’s national Antarctic programme that have been many years in the planning.

Other polar scientists have criticized the nine-point science plan laid out on the expedition’s website. The plan “could be interpreted as delivering outcomes that I believe are not possible from this single voyage”, says Richard Coleman, deputy director of the Institute for Marine and Antarctic Studies at the University of Tasmania in Hobart, Australia. For instance, the plan’s first bullet point says that the expedition aims to “gain new insights into the circulation of the Southern Ocean and its impact on the global carbon cycle”. A single trip could provide only limited glimpses into this massive question, says Coleman, who sits on the committee that evaluates research proposals for the AAD.

We are now faced with the difficult situation of how to salvage our own project.

Turney, Gales and others all agree that the scientific value of the expedition will be measured in the quality of peer-reviewed science it produces. Yet the expedition’s fate has sharpened the long-standing tension between government polar-research programmes, which typically follow strategic plans devised through many rounds of peer review, and private voyages, which occasionally have science objectives along with other goals such as tourism or raising environmental awareness.

Turney says that he regrets any confusion over the AAD’s involvement in the expedition. “At no stage did I intend to convey the impression that the [expedition] projects had been subject to the competitive peer-reviewed process required for participants in the formal Australian Antarctic programme,” he says.

The Russian-registered Shokalskiy became trapped on 24 December in thick ice in the Commonwealth Bay region. The vessel’s captain put out a distress call, and Australian, Chinese, French and US ships interrupted their schedules and came to help.

On 2 January, the 52 scientists, students, educators and journalists aboard the Shokalskiy evacuated to the Australian vessel Aurora Australis aboard a helicopter provided by the Chinese icebreaker Xue Long, which had also become stuck in ice while attempting to reach the stricken Shokalskiy. The complex maritime emergency ended a few days later when the Xue Long and the Shokalskiy both managed to extricate themselves. The Xue Long continued on its way to scout the Ross Sea region for the site of a future Antarctic base, China’s fifth.

The Australis travelled to Australia’s Casey Antarctic base, where it had been working before the rescue, with its new passengers. The diversion has put it behind schedule, delaying the resupply of several of Australia’s polar-research stations. A Casey-based project to study ocean acidification did not receive the diving equipment it needs to scout sites for a carbon dioxide enrichment experiment to be carried out this year, among other delays.

“The reduction in available field time for this season has set us back significantly and we will not achieve all of our goals for this summer,” says Donna Roberts, the acidification project’s chief investigator and a senior research fellow at the Antarctic Climate and Ecosystems Cooperative Research Centre in Hobart. “We are now faced with the difficult situation of how to salvage our own project.”

Like other governments involved in Antarctic research, Australia has a long-term strategic science plan built around testable hypotheses to answer key questions, says Mahlon Kennicutt, a Texas-based ocean­ographer and former president of the Scientific Committee for Antarctic Research. “Those that have invested great time and energy to pass the high bar of national funding see their programmes being jeopardized by those that might be perceived to have circumvented the system,” he says.

But expedition participant Janet Wilmshurst, a palaeoecologist at Landcare Research in Lincoln, New Zealand, argues that the expedition has brought back important science. Before reaching Antarctica, it explored the subantarctic islands of New Zealand. Wilmshurst led a team that gathered peat cores, leaf and soil litter and other samples to study environmental change.

“It was incredibly productive for us,” she says. For instance, three new peat cores from the Snares Islands will be the first from the island group to be analysed using modern techniques, providing a glimpse into climate history at a key location where the northern Southern Ocean meets a subtropical front.

Sorting out the long-term research effects of the Shokalskiy rescue may take some time. “My biggest concern is that of the reputation for Antarctic science,” says Patrick Quilty, a geologist at the University of Tasmania who has worked in Antarctica for nearly five decades. “There are ramifications.”