<a href="https://www.apartments.com.au/developments/broadbeach-qld-4218">Broadbeach</a> offers plenty of reasons to live vertically, but moving from a substantial family home into an apartment can expose the compromises of high-density living. Privacy, room for guests and usable living space tend to matter more when an apartment is intended as a permanent home rather than an occasional coastal base.

A typical residential floor at <a href="https://www.apartments.com.au/new-apartments/the-eveleigh-broadbeach-7-9-surf-parade-broadbeach-qld-4218">The Eveleigh</a>, on Surf Parade,&nbsp;contains just four apartments. The 94-residence development by <a href="https://www.apartments.com.au/developers/hirsch-faigen">Hirsch &amp; Faigen</a> is predominantly made up of expansive three-bedroom homes, with a limited collection of half-floor penthouses above.

Across the apartment floors, <a href="https://www.apartments.com.au/architects/rothelowman">Rothelowman</a> has used the relatively limited number of residences to give each home greater access to natural light and outlook. Living spaces extend towards full-height glazing, while a series of bay windows frame selected views across the Pacific Ocean, city and hinterland rather than treating the building edge as a continuous wall of glass.

&nbsp;

[smartcode_project:default project_id=149670 project_image_fid=360965]

“The apartment floors deliver a collection of homes that embrace controlled outlook via a series of bay windows deliberately framing moments of view,” Rothelowman Director Kim Lowman said.

From outside, those projecting forms contribute to the tower’s faceted profile. Strong horizontal and vertical elements establish its proportions, while the changing position of the sun alters the light, shadow and reflection across the façade throughout the day.

The same attention moves inside the apartments, where the material palette combines warm timber, natural stone, metallic detailing and softer curved forms. Kitchens sit within the main living zone, with stone island benches, integrated joinery and European appliances, before the living areas extend towards the glazing and the outlook.

&nbsp;

[smartcode_project:default project_id=149670 project_image_fid=360981]

Three genuine bedrooms provide room to accommodate family and guests, while two secure car spaces and storage address some of the practical considerations that can become more noticeable when moving from a larger home. Feedback from the display suite has centred on the warmth and restraint of the interiors, with buyers commenting that the residences feel like homes rather than conventional coastal apartments.

A limited collection of half-floor penthouses occupies the upper levels, increasing the scale of the living spaces and adding private balconies and elevated finishes. From this position, the outlook extends between the ocean and hinterland.

Outside the private residences, The Eveleigh separates its shared spaces between the podium and rooftop. The podium is centred on wellness, with subtropical landscaping surrounding a swimming pool and pool terrace, yoga garden, private gymnasium, sauna and hot and cold plunge facilities. Landscaped retreats and pavilions provide additional places to sit away from the main recreation areas.

&nbsp;

[smartcode_project:default project_id=149670 project_image_fid=360966]

Higher in the building, a rooftop pavilion and private dining suite sit alongside resident lounge, barbecue and outdoor dining areas, opening towards panoramic views across the ocean, city and hinterland.

“Buyers are no longer just looking for an apartment, but a lifestyle where they can relax, reset, and enjoy a balanced way of living,” Hirsch &amp; Faigen Director of Sales Matt George said.

Interest to date has come from established owner-occupiers and interstate lifestyle purchasers, including buyers planning a future move to the Gold Coast. Many are coming from larger homes and want to reduce ongoing maintenance without giving up space for family and guests, privacy, two car spaces or the ability to entertain at home.

&nbsp;

[smartcode_project:default project_id=149670 project_image_fid=360969]

Much of that daily life can also take place beyond the building without requiring a drive. Kurrawa Beach and Pratten Park are an easy walk from Surf Parade, while Pacific Fair, Oracle Boulevard, The Oasis, restaurants, cafés, entertainment and public transport are also within walking distance.

The Eveleigh is Hirsch &amp; Faigen's fourth Gold Coast development since entering the market in 2021, following The Hemingway at Palm Beach, The Emerson at Kirra and Yves at Mermaid Beach. Each of the preceding projects sold out before completion.

“Broadbeach had been on our radar throughout our time operating on the Gold Coast,” the developer said. “Following our projects in Palm Beach, Kirra and Mermaid Beach, Broadbeach represented the natural next step for the business.”

The Surf Parade site brought together proximity to the beach, protected coastal outlooks and walkability to dining, shopping and recreation. Hirsch &amp; Faigen also identified the street as an emerging premium residential address, with enough separation from Broadbeach's busier destinations to retain a quieter environment at home.

The Eveleigh is now under construction by Maxcon, with completion forecast for mid-2028. Three-bedroom residences are currently available from $2.87 million.

[smartcode_project_cta:default project_id=149670]

Joel Robinson

The Eveleigh brings house-like apartments to Broadbeach

A long-stalled Campbelltown development site is back in play, with new plans for 139 apartments set to supersede a mixed-use scheme approved almost a decade ago but never built.

The new proposal for 28 Cordeaux Street would deliver 116 market and 23 affordable apartments in a part 14-storey building, bringing a substantial new project into a Campbelltown market where new apartment supply remains limited.

Plans have been filed over the 3,092 sqm corner site at Moore-Oxley Street, around 600 metres from Campbelltown Railway Station and the city-centre retail core.

The site already carries a mixed-use residential approval dating to 2016. Doroch Architects has now been engaged on a larger replacement scheme, which is progressing as a State Significant Development Application following a Housing Delivery Authority determination in August 2025.

The apartment mix comprises 39 one-bedroom, 72 two-bedroom and 28 three-bedroom residences. Two-bedroom apartments make up just over half of the project, while three-bedroom homes account for 20 per cent.

<img alt="First look: New 139-apartment plans revive long-stalled Campbelltown city centre site" data-entity-type="file" data-entity-uuid="136dd5b9-3791-4da6-9e31-76f533f5b4de" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/Campbelltown%20da2.png?VersionId=LgOSy9nwf5u.MGswBBwaGGxuX8QpHSl_" />

Of the 139 apartments, 23 will be delivered as affordable housing under the in-fill affordable housing provisions of the Housing SEPP. The affordable component represents 15 per cent of the residential gross floor area and will be managed by a registered Community Housing Provider.

Doroch has sought to break the scale of the building into two distinct elements, with a masonry podium of around four storeys establishing the street edge before the residential tower steps back above.

The corner position has shaped that approach. Cordeaux Street faces toward the commercial and civic centre, while Moore-Oxley Street leads into the lower-scale residential neighbourhood to the south, and the design verification report describes the site as "bridging the commercial core to the north and established residential areas to the south."

The podium will be expressed predominantly in face brick, while the upper levels shift to brushed and grooved concrete cladding with darker metal detailing. Recessed sections, deep balcony edges and landscaping break down the upper form, with an approximately 11.8-metre setback to the northern boundary addressing the adjoining St Peters Anglican School.

<img alt="First look: New 139-apartment plans revive long-stalled Campbelltown city centre site" data-entity-type="file" data-entity-uuid="c8b3d2d3-c561-4bfc-a5d9-a68c0c10dac1" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/Campbelltown%20da1.png?VersionId=AeAEyJU02Gk2k5noUj2StziCvdQ7fW4B" />

Campbelltown has been starved of new residential developments in the last decade.

The only other notable development set to come to market this year is ALAND's Queen Square, a mixed-use precinct on over two hectares that will comprise apartments above a vibrant ground-level retail and hospitality dining precinct.

First look: New 139-apartment plans revive long-stalled Campbelltown city centre site

First Look: Sherlock Construction pitches apartments for low-rise Deception Bay

Queensland builder-developer MAYD has revealed the first look at its major North Kirra beachfront development, lodging amended plans that reduce the number of apartments and increase the proportion of larger residences.

The project is planned across a substantial 4,742 sqm amalgamated site spanning seven lots at <a href="https://www.apartments.com.au/new-apartments/2-6-pacific-parade-bilinga-qld-4225">2-6 Pacific Parade</a> and 27-33 Golden Four Drive in Bilin​ga, directly opposite Nor​th Kirra Beach.

<a href="https://www.apartments.com.au/developers/mayd-group">MAYD</a> secured the site for $32.5 million in 2025, in what was one of the Gold Coast's largest property transactions of the year.

The development will be delivered across two stages, with the first stage carrying an estimated gross realisation value of around $360 million.

The latest amendments seek to reduce the overall apartment count and shift the project further toward the owner-occupier market, with larger residences designed for buyers wanting considerably more space than traditionally offered in a beachfront apartment.

The residential mix will include townhomes, oversized two-bedroom apartments, substantial three-bedroom residences and four-bedroom homes.

MAYD has appointed Cera Stribley to lead the architecture and interiors, with the Melbourne-based design practice drawing on the beachfront setting through a series of ocean-facing terraces and heavily landscaped balconies.

Strong horizontal forms and curved balconies will define the exterior, with subtropical landscaping integrated throughout the building to soften the built form and increase the connection between the residences and the beachfront.

The project will also include an extensive collection of resident wellness and lifestyle facilities, continuing the broader shift across the Gold Coast's luxury apartment market toward larger homes supported by resort-style amenity.

<img alt="MAYD" data-entity-type="file" data-entity-uuid="d1bcbb05-e659-4b47-8bd4-1e595315e2ad" src="https://s3.ap-southeast-2.amazonaws.com/www.urban.com.au/s3fs-public/inline-images/Screenshot%202026-08-27%20at%202.05.03%E2%80%AFPM.png?VersionId=jj0XEud1X1DuLt7_KyElhjMdZGOXmLHP" />

MAYD Founder Todd Mould said North Kirra was increasingly appealing to buyers attracted to the more established, lower-density character of the southern Gold Coast.

"North Kirra presents one of the most compelling luxury residential opportunities currently emerging in Australia, combining absolute beachfront with the character and authenticity that buyers are increasingly seeking, and the same sense of tight-knit community that defined Burleigh and Currumbin perhaps 10 or 15 years ago," Mould said.

"With Gold Coast Airport on its doorstep, it also offers a level of accessibility that broadens its appeal across almost every market demographic."

The project comes as the southern Gold Coast continues to attract an increasing share of high-end apartment development and buyer activity.

Kirra in particular has emerged as one of the region's more tightly held beachfront markets, with its relatively low-density character, established surf and hospitality scene and proximity to Gold Coast Airport differentiating it from the higher-density markets further north.

Mould said those characteristics had informed the approach MAYD and Cera Stribley had taken to the project.

"We've worked closely with Cera Stribley to create a vision that is deeply connected to its surroundings," he said.

"Inspired by the coastline itself, the architecture has been shaped around space, privacy and resort-style living, creating a collection of homes that reflects the next generation of luxury on the southern Gold Coast."

MOTIV Managing Director Carly Cottam, who has been appointed to market the project, said buyer attention had continued to move south along the Gold Coast.

"Purchasers who may once have defaulted to Broadbeach, Main Beach or Surfers Paradise are increasingly recognising the value of a genuine beachfront location that offers lower density, strong amenity and a more established sense of community," Cottam said.

"Kirra has a powerful combination of growing demand and genuine scarcity. Beachfront supply is inherently constrained, the area remains relatively low density, and buyers are increasingly placing a premium on locations that feel established, uncrowded and authentic rather than heavily developed."

Cottam said the proximity to Gold Coast Airport was also proving increasingly important for interstate and second-home buyers.

"Being minutes from Gold Coast Airport makes it particularly compelling for interstate buyers, frequent travellers and second-home purchasers who can access an authentic coastal lifestyle almost immediately after stepping off a flight."

The acquisition takes MAYD's active development portfolio to more than $500 million, with the North Kirra project representing one of its largest undertakings to date.

MAYD is targeting an early 2027 launch.

First look at MAYD's North Kirra mixed-use precinct

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Castle Hill, the longtime hub of the Hills District, has been one of the major beneficiaries of Sydney's Metro expansion, with improved connectivity helping drive continued population growth, development and buyer demand across the Hills District.

But despite that growth, the suburb has seen relatively few major new apartment projects brought to market over the past 18 months.

Hills District developer Reve Group is looking to fill that gap with <a href="https://www.apartments.com.au/new-apartments/nova-r-ve-castle-hill-2-garthowen-crescent-castle-hill-nsw-2154">Nova Rêve</a>, a major new mixed-use precinct on the corner of Garthowen Crescent and Old Castle Hill Road, a short walk from Castle Hill Metro Station and Castle Towers.

[smartcode_project:default project_id=152737 project_image_fid=377679]

The project will comprise three residential towers alongside a hotel, restaurants, cafes and a skybar, more than 1,600 sqm of ground-floor retail and almost an acre of landscaped gardens.

It represents the largest project undertaken by Reve Group, the development arm of the Kassis family, which has been building across the Hills District for more than 30 years through Kassis Homes.

[smartcode_project:default project_id=152737 project_image_fid=377675]

Nova Rêve also represents a significant step up from the family's first apartment development, Grand Rêve, which was delivered nearby on Garthowen Crescent.

Grand Rêve introduced larger, house-like apartment layouts and premium inclusions including Wolf and Sub-Zero appliances to the Castle Hill market.

Nova Rêve takes that approach to a precinct scale, combining the residential component with hospitality, retail and substantial public and resident landscaping.

[smartcode_project:default project_id=152737 project_image_fid=377685]

Reve Group Managing Director Sam Kassis said the project reflected the family's three decades of building in the Hills, which has evolved from trophy homes on quarter-acre blocks to larger-scale apartment development.

"Grand Rêve was our first apartment project here and it showed us what this pocket of Castle Hill could be. Nova Rêve is the refinement of that idea: not just apartments, but a place the whole suburb can use," Kassis said.

A key part of that approach is the hotel, which has been designed to operate as an amenity for the wider Castle Hill community rather than solely hotel guests.

It will include restaurants, cafes, skybars and all-day dining, alongside conference and event facilities catering to business functions, community groups and private events.

At ground level, more than 1,600 sqm of shops and cafes will open onto the surrounding streets and landscaped areas.

Almost an acre of gardens designed by Land and Form Studios will run through the precinct, incorporating pathways, seating, barbecue areas and children's play spaces.

[smartcode_project:default project_id=152737 project_image_fid=377680]

Reve Group's Romio Georges said creating an active ground plane had been central to the planning of Nova Rêve.

"There are gardens with pathways, barbecues, seating and play areas, shops and cafes opening onto the street, and a hotel with restaurants and a skybar that anyone in Castle Hill can walk into," Georges said.

The project's elevated position on one of Sydney's highest ridgelines will also provide apartments with outlooks toward the Sydney skyline, surrounding parkland and the Blue Mountains.

More than 80 per cent of the apartments will occupy corner positions, with Turner responsible for both the architecture and interiors.

&nbsp;

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Nova Rêve arrives as Reve Group bets on Castle Hill's next growth phase

Antarctica

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<img src="https://counter.theconversation.edu.au/content/81747/count.gif?distributor=republish-lightbox-advanced" alt="The Conversation" width="1" height="1">
GUEST OBSERVER
Domestic animals are rarely associated with Antarctica. However, before non-native species (bar humans) were excluded from the continent in the 1990s, many travelled to the far south.
These animals included not only the obvious sledge dogs, but also ponies, sheep, pigs, hamsters, hedgehogs and a goat. Perhaps the most curious case occurred in 1933, when US Admiral Richard E. Byrd’s second Antarctic expedition took with it three Guernsey cows. 
The cows, named Klondike Gay Nira, Deerfoot Guernsey Maid and Foremost Southern Girl, plus a bull calf born en route, spent over a year in a working dairy on the Ross Ice Shelf. They returned home to the US in 1935 to considerable celebrity. 
Keeping the animals healthy in Antarctica took a lot of doing – not least, hauling the materials for a barn, a huge amount of feed and a milking machine across the ocean and then the ice. What could have possessed Byrd to take cows to the icy south? 
The answer we suggest in our recently published paper is multi-layered and ultimately points to Antarctica’s complex geopolitical history.
Solving the “milk problem”
The cows’ ostensible purpose was to solve the expedition’s so-called “milk problem”. By the 1930s, fresh milk had become such an icon of health and vigour that it was easy to claim it was needed for the expeditioners’ well-being. Just as important, however, were the symbolic associations of fresh milk with purity, wholesomeness and US national identity. 
Powdered or malted milk could have achieved the same nutritional results. Previous expeditions, including those of Ernest Shackleton and Roald Amundsen, had survived just fine with such products. What’s more, William Horlick of Horlick’s Malted Milk sponsored Byrd’s second Antarctic expedition; the seaplane Byrd used was named for this benefactor. 
So if fresh milk was not actually a health requirement, and other forms were readily available, why go to the trouble of lugging three cows and their accoutrements across the ice?
Maximising publicity
The cows represented a first, and Byrd well knew that “firsts” in the polar regions translated into media coverage. The expedition was privately funded, and Byrd was adept at attracting media attention and hence sponsorship. His backers expected a return, whether in the form of photographs of their product on the ice or mentions in the regular radio updates by the expedition. 
The novelty value that the cows brought to the expedition was a valuable asset in its own right, but Byrd hedged his bets by including a pregnant cow – Klondike was due to give birth just as the expedition ship sailed across the Antarctic Circle. The calf, named “Iceberg”, was a media darling and became better known than the expeditioners themselves. 
The celebrity attached to the cows helped the expedition remain in the headlines throughout its time in Antarctica, and they received an enthusiastic welcome upon its return. Although the unfortunate Klondike, suffering from frostbite, had to be put down mid-expedition, her companions made it home in good condition. They were feted on their return, meeting politicians in Washington, enjoying “hay cocktails” at fancy hotels, and making the front page of The New York Times.
It would be easy, then, to conclude that the real reason Byrd took cows south was for the publicity he knew they would generate, but his interest in the animals may also have had a more politically motivated layer.
Eyeing a territorial claim
A third reason for taking cows to Antarctica relates to the geopolitics of the period and the resonances the cows had with colonial settlement. By the 1930s several nations had claimed sectors of Antarctica. Byrd wanted the US to make its own claim, but this was not as straightforward as just planting a flag on the ice. 
According to the Hughes Doctrine, a claim had to be based on settlement, not just discovery. But how do you show settlement of a continent covered in ice? In this context, symbolic gestures such as running a post office – or farming livestock – are useful. 
Domestic animals have long been used as colonial agents, and cattle in particular were a key component of settler colonialism in frontier America. The image of the explorer-hero Byrd, descended from one of the First Families of Virginia, bringing cows to a new land and successfully farming them evoked this history. 
The cows’ presence in Antarctica helped symbolically to turn the expedition base – not coincidentally named “Little America” – into a frontier town. While the US did not end up making a claim to any sector of Antarctica, the polar dairy represented a novel way of demonstrating national interest in the frozen continent.
The Antarctic cows are not just a quirky story from the depths of history. As well as producing milk, they had promotional and geopolitical functions. On an ice continent, settlement is performed rather than enacted, and even Guernsey cows can be more than they first seem.
<a href="https://theconversation.com/profiles/hanne-e-f-nielsen-139245" target="_blank">Hanne E.F. Nielsen</a> is PhD Candidate in Antarctic Representations, University of Tasmania.
<a href="https://theconversation.com/profiles/elizabeth-leane-267090" target="_blank">Elizabeth Leane</a> is Associate Professor of English and ARC Future Fellow, University of Tasmania.
Both are authors for <a href="https://theconversation.com/au" target="_blank">The Conversation</a>.
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j.ballantyne1990-6AQqhLzZaK

Cows in Antarctica? How one expedition milked them for all their worth

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<img src="https://counter.theconversation.edu.au/content/80314/count.gif?distributor=republish-lightbox-advanced" alt="The Conversation" width="1" height="1">
GUEST OBSERVER
Icebergs breaking off Antarctica, even massive ones, do not typically concern glaciologists. But the impending birth of a new massive icebergcould be more than business as usual for the frozen continent. 
The Larsen C ice shelf, the fourth-largest in Antarctica, has attracted worldwide attention in the lead-up to calving an iceberg one-tenth of its area – or about half the area of greater Melbourne. It is still difficult to predict exactly when it will break free.
But it’s not the size of the iceberg that should be getting attention. Icebergs calve all the time, including the occasional very large one, with nothing to worry about. Icebergs have only a tiny direct effect on sea level. 
The calving itself will simply be the birth of another big iceberg. But there is valid concern among scientists that the entire Larsen C ice shelf could become unstable, and eventually break up entirely, with knock-on effects that could take decades to play out.
Ice shelves essentially act as corks in a bottle. Glaciers flow from land towards the sea, and their ice is eventually absorbed into the ice shelf. Removal of the ice shelf causes glaciers to flow faster, increasing the rate at which ice moves from the land into the sea. This has a much larger effect on sea level than iceberg calving does.
While the prediction that Larsen C could become unstable is based partly on physics, it is also based on observations. Using aerial and satellite images, scientists have been able to track very similar ice shelves in the past, some of which have been seen to retreat and collapse. 
<h2>The death of an ice shelf</h2>
The most dramatic ice shelf collapse observed so far is that of Larsen C’s neighbour to the north – the imaginatively named Larsen B. Over the course of just six weeks in 2002 the entire ice shelf splintered into dozens of icebergs. Almost immediately afterwards, the glaciers feeding into it sped up by two to six times. Those glaciers continue to flow faster to this day. 
In our new study, published in Earth and Planetary Science Letters, we turn the clock back even further to look at the Wordie ice shelf, on the west coast of the southern Antarctic Peninsula, which began to retreat in the 1960s and eventually disappeared in January 2017. 
Over the past 20 years, observations have shown that the main glacier feeding into the Wordie ice shelf, the Fleming Glacier, has sped up and thinned. Compared with the glaciers feeding Larsen B and C, Fleming Glacier is massive: 80km long, 12km wide, and 600m thick at its front.
<a href="https://www.propertyobserver.com.au/images/2017/07/28/file-20170705-16510-iymhsl.gif" target="_blank">Click to enlarge</a>
<img src="https://www.urban.com.au/images/2017/07/28/file-20170705-16510-iymhsl.gif" alt="">
<div class="enlarge_hint">
Locations of the Larsen C Ice Shelf and the Wordie Ice Shelf-Fleming Glacier system with ice front positions from 1947 to 2016. Author provided
</div>
We used historic aerial photographs from 1966 to create an elevation map of the Fleming Glacier, and compared it to elevation measurements from 2002 to 2015. Between 1966 and 2015 the Fleming Glacier thinned by at least 100m near the front. The thinning rate, which is the elevation change rate, rapidly increased: the thinning rate after 2008 is more than twice that during 2002 to 2008, and four times the average rates from 1966 to 2008.
<a href="https://www.propertyobserver.com.au/images/2017/07/28/file-20170629-5317-1j5zalo.png" target="_blank">Click to enlarge</a>
<img src="https://www.urban.com.au/images/2017/07/28/file-20170629-5317-1j5zalo.png" alt="">
Ice thinning rate of the Fleming Glacier region during (a) 2002-2008 and (b) 2008-2015. Author provided
Ice flow speeds have also increased by more than 400m per year at the front since 2008. This is <a href="https://www.the-cryosphere-discuss.net/tc-2017-75/">the largest speed change in recent years of any glacier in Antarctica</a>. These changes all point to ice shelf collapse as the cause.
We estimate the total glacier ice volume lost from all glaciers that feed the Wordie is 179 cubic kilometres since 1966, or 319 times the volume of Sydney Harbour. The weight of this ice moving off the land and into the ocean has caused the bedrock beneath the glaciers to lift by more than 50mm. 
Other research has suggested this lift could have acted to slow the glacier’s retreat, but it’s clear that the bedrock deformation has not stopped the ice movement speeding up. It seems the Fleming Glacier has a long way to go before it will return to a new stable state (in which snowfall feeding the glacier equals the ice flowing into the oceans).
Fifty years after the Wordie Ice Shelf began to collapse, the major feeding glaciers continue to thin and flow faster than before. 
We can’t yet predict the full consequences of the new iceberg calving from Larsen C. But if the ice shelf does begin to retreat or collapse, history tells us it is very possible that its glaciers will flow faster – making yet more sea level rise inevitable.
<a href="https://theconversation.com/profiles/chen-zhao-382317" target="_blank">Chen Zhao</a> is PhD candidate of Antarctic Science, University of Tasmania
<a href="https://theconversation.com/profiles/christopher-watson-159793" target="_blank">Christopher Watson</a> is Senior Lecturer, Surveying and Spatial Sciences, School of Land and Food, University of Tasmania.
<a href="https://theconversation.com/profiles/matt-king-15004" target="_blank">Matt King</a> is Professor, Surveying &amp; Spatial Sciences, School of Land and Food, University of Tasmania.
All are authors for <a href="https://theconversation.com/au" target="_blank">The Conversation</a>.
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Don’t worry about the huge Antarctic iceberg – worry about the glaciers behind it

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<img src="https://counter.theconversation.edu.au/content/80140/count.gif?distributor=republish-lightbox-advanced" alt="The Conversation" width="1" height="1">
GUEST OBSERVER
When you think of Antarctica, you probably picture vast, continuous ice sheets and glaciers, with maybe a penguin or two thrown in.
Yet most Antarctic plants and animals live in the permanently ice-free areas that cover about 1 percent of the continent. Our new research predicts that these areas could grow by a quarter during this century, with mixed prospects for the species that currently live there. 
Besides everyone’s favourite Emperor and Adélie penguins, terrestrial Antarctic species also include beautiful mosses, lichens, two types of flowering plants, and a suite of hardy invertebrates such as nematodes, springtails, rotifers and tardigrades, many of which are found nowhere else on Earth. Tardigrades – tiny creatures sometimes nicknamed “waterbears” – are so tough they can survive in space.
Antarctica’s ice-free areas are currently limited to a scattering of rocky outcrops along the coastline, or cliff faces, or the tops of mountain ranges. They form small patches of suitable habitat in a huge sea of ice, much like islands. 
As a result, the plants and animals that live there are often isolated from each other. But as Antarctica’s climate warms, we expect ice-free areas to get bigger and eventually start joining up. This would create more habitat for native species, but also new opportunities for non-native species to spread. 
Our study, published today in Nature, forecasts that climate change will expand Antarctica’s ice-free areas over the course of this century. Under the most severe scenario that we modelled (which is also the one on which the globe is currently tracking), more than 17,000 square km of new ice-free area could emerge across the continent by 2100. 
This would increase the current total ice-free area by nearly a quarter. The majority of this new ice-free land will be on the Antarctic Peninsula, which could have three times as much ice-free area as it does today.  
Brave new world
As the ice-free areas expand, the distances between them will decrease, giving plants and animals more opportunity to spread through the landscape. On the Antarctic Peninsula, which has already warmed more than anywhere else in Antarctica, many of the ice-free patches will expand so much that they will start joining together.
Will this increase in habitat availability benefit the plants and animals that live there? It will definitely provide new opportunities for some native plants and animals to expand their range and colonise new areas. The warming climate may also give a boost to species that are currently hampered by the lack of warmth, nutrients and water. Some Antarctic mosses, for example, are expected to grow faster as temperatures rise, and Antarctica’s two flowering plant species are already expanding southward.
However, the potential benefits seem likely to be outweighed by the negatives. The joining-up of habitat patches could allow species that have been isolated for much of their evolutionary past to meet suddenly. If the newcomers to a particular area outcompete the native species, then it may lead to localised extinctions. Over the coming centuries this could lead to the loss of many plants and animals, and the homogenisation of Antarctica’s ecosystems.
Antarctic aliens
An even bigger concern is that Antarctica’s great thaw could provide new opportunities for species to invade. Antarctica’s best bulwark against non-native species is its harsh climate and extreme weather, to which native Antarctic species have spent many thousands of years adapting. 
We already know that many plants and invertebrates are reaching Antarctica, most often in food or cargo shipments. As the climate warms, some of these non-native species may be able to establish themselves on the Antarctic Peninsula, and the increasing connectivity will allow them to easily move through the landscape. Many of these animals and plants may become invasive, competing with the native species for space and resources. 
We don’t know how Antarctica’s species will cope with the increasing competition. But if the sub-Antarctic islands provide any indication, the outlook is depressing. Australia’s World Heritage-listed Macquarie Island, for example, was severely impacted by invasive cats, rats, rabbits and mice (although it has since been declared free of these pests after an intensive eradication effort).
Several non-native species have already come to Antarctica, including the invasive annual meadowgrass Poa annua (a common weed around the world), which has colonised newly ice-free areas left behind by retreating glaciers. It is thought to outcompete Antarctica’s native plants, although we don’t yet know what the impact will be on animals. 
Humans – both scientists and tourists – are key transporters of non-native species to the continent, and tourist numbers continue to grow (almost 37,000 visited in the 2016-17 summer). 
Biosecurity is paramount for the ongoing protection of Antarctica. If bags, shoes, clothes and field equipment are not properly cleaned and inspected before arriving on the continent, then non-native seeds, microbes and insects could be transported to Antarctica and begin to spread. 
We call for protection of ice-free areas that will remain intact in a changing climate, and for the Antarctic scientific and tourism communities to pinpoint key areas where greater biosecurity and monitoring for invasive species may be needed.
<a href="https://theconversation.com/profiles/jasmine-lee-171931" target="_blank">Jasmine Lee</a> is PhD candidate, biodiversity conservation and climate change, The University of Queensland.
<a href="https://theconversation.com/profiles/justine-shaw-299755" target="_blank">Justine Shaw</a> is Conservation Biologist, The University of Queensland.
<a href="https://theconversation.com/profiles/richard-fuller-169469" target="_blank">Richard Fuller</a> is Associate Professor in Biodiversity and Conservation, The University of Queensland.
All are authors for <a href="https://theconversation.com/au" target="_blank">The Conversation</a>.
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