Best of our wild blogs: 2 Jul 11


Video clip of The Diversity of Singapore's Sea Anemones Public Talk, 29 Jun from sgbeachbum

9 July - Chek Jawa Boardwalk nature trip
from Adventures with the Naked Hermit Crabs

Life History of the Autumn Leaf
from Butterflies of Singapore

BESGroup report: May 2010 to May 2011
from Bird Ecology Study Group

Anemone hunt at Punggol
from wild shores of singapore and Singapore Nature

Dirty, smelly and brown: What's happened to S'pore River?
from Lazy Lizard's Tales

Oriental Whip Snake
from Monday Morgue


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Explore old rail tracks? You can during this month

SLA to do removal works in stages so public can experience green corridor
Jamie Ee Wen Wei Straits Times 2 Jul 11;

TANJONG Pagar Railway Station may be closed and work to remove the tracks is under way, but it is not the end of the road yet for railway buffs.

In response to requests from the public, the entire line of railway tracks will be open to the public from now until July 17, except for a few areas.

After July 17, a 3km stretch of tracks from Rifle Range Road to The Rail Mall will continue to be open until July 31.

A joint statement from the Singapore Land Authority (SLA) and the Urban Redevelopment Authority yesterday noted that as agreed with Malaysia, Singapore will remove the tracks and ancillary structures of the KTM railway and hand them over to Malaysia.

The SLA will start these removal works as well as do maintenance works shortly.

But 'in response to requests for an opportunity for the public to trek along and experience the tracks', the SLA will do its work in stages.

It added that members of the public are advised to be careful when walking along the tracks as it can be 'narrow and rough' at certain locations.

The statement said the Tanjong Pagar Railway Station and Bukit Timah Railway Station will be closed temporarily to facilitate the moving out of furniture and equipment by KTM and its tenants.

The SLA will also carry out maintenance works and structural inspections. More information on the two buildings' reopening will be announced later.

Tanjong Pagar Railway Station will be preserved as a national monument while the Bukit Timah Railway Station has been gazetted as a conserved building.

From July 1 to July 17, minor works will be carried out at the Bukit Timah station and the railway crossings at Kranji Road, Sungei Kadut Avenue, Choa Chu Kang Road, Stagmont Ring and Gombak Drive.

The public should avoid these areas, which will be cordoned off, said the statement.

Works to remove the tracks along the rest of the former line, except for the 3km stretch from Rifle Range Road to The Rail Mall, will start from July 18.

This will include the clearing of small buildings, tracks, cables, gates, posts, signal lights, level crossings, controllers and traffic lights.

Removal works will be fully completed by Dec 31.

The railway land, which was previously occupied by Malaysia's KTM for its railway use, was returned to Singapore yesterday following a land-swop agreement with Malaysia.

History buff Jerome Lim, 46, said the extension would give more Singaporeans a chance to 'explore the tracks and appreciate the beauty of the green corridor'.

He was at the tracks between Holland Road and The Rail Mall yesterday morning to explore it the day after the handover.

'There was a surreal kind of silence, a sense of calm and peace. The fact that no trains were passing through added to the surreal feeling,' said the naval architect, who has visited various parts of the track in the past.

Mr Leong Kwok Peng, 54, vice-president of the Nature Society of Singapore, felt that two weeks was too short for the public to fully experience the tracks and its surroundings.

'There's a fantastic countryside feel to it. It's a rare piece of land, yet close to many residential areas,' he said.

The society is planning to organise walks for its members over the two weekends.

He recommends taking a walk along the scenic stretch between Holland Road to Hillview Avenue, where trekkers will come across bridge.

Another stretch between Buona Vista and Bukit Merah offers a contrasting landscape of office buildings lined along the tracks, he said.

The more adventurous can venture up north from Choa Chu Kang to Woodlands, where there are mangroves along the way, said Mr Leong.

He advised the public to do the trek in the day as there are no street lights along the track. They should be prepared for rain and wear comfortable walking shoes.

Meanwhile, at the Tanjong Pagar station yesterday, work to dismantle the railings along the train platform began.

Signs stating 'State Property' were also put up around the perimeter of the site.

Several members of the public turned up to catch a glimpse of the building a day after the handover.

Student Janson Chang, 20, was taking pictures of the station's facade from outside its gates. 'I used to live in the area and grew up seeing the trains pulling in and out of the station,' he said.

Retiree Chang Yee Chow, 60, was disappointed when he found out it was already closed to the public. He was at the station on Thursday evening.

'It was very crowded that night. I wanted to see how it was like when the building is empty, whether there would be a different atmosphere,' he said.

Unbroken green stretch along railway land?
Grace Chua Straits Times 2 Jul 11;

THE railway lands that were returned to Singapore yesterday may be kept a continuous green stretch and could even be linked to existing park connectors.

A day after the historic handover of the 26km tract of Keretapi Tanah Melayu (KTM) lands, the Urban Redevelopment Authority (URA) said yesterday that it would 'comprehensively review and chart the development plans' for the lands and their surrounding areas.

'The URA will study the possibility of marrying development and greenery, such as applying innovative strategies to maintain a continuous green link along the rail corridor without affecting the development potential of the lands,' it said in its first statement on the lands, much of which is flanked by unspoilt vegetation.

And even though the lines are closed for clearing, train-track trekkers will get a brief respite to visit most parts of the tracks, until July 17. After that, a 3km stretch from Rifle Range Road to the Rail Mall will stay open until the end of the month.

On its website, the URA also suggested that the stretch from Tanjong Pagar to Woodlands could one day add to the planned 150km round-the-island park connector network, or be a linear park like New York City's High Line, itself once part of an elevated railroad track.

The so-called 'Rail Corridor', the URA said, will offer people new choices of outdoor activities.

'We hope that it will encourage people to explore parts of Singapore that were less accessible before,' it said.

Environmentalists reacted to the announcement with caution, with some wanting to see what would actually be done.

Last year, nature and heritage groups asked the Government to conserve what they term the Green Corridor, which comprises not just the recently returned KTM lands but also a 14km western stretch of railway towards Jurong.

They argued that the 173.7ha expanse was home to rare birds and animals, and a key part of Singapore's natural and national heritage.

Since then, more than a thousand people have been on guided or independent walks along the tracks.

Mr Steven Lim, president of the Safe Cycling Task Force, said: 'I'm surprised. I thought they would free up the land for commercialisation.'

But he liked the idea of an unbroken stretch, especially one joined to the park connector network. 'It gives leisure and commuter cyclists another option,' he said.

Others gave suggestions on how the land could be developed while still kept unbroken.

Mr Leong Kwok Peng, vice-president of the Nature Society (Singapore) and part of the 'Green Corridor' advocacy group, said there are places, such as Tanjong Pagar, Woodlands and the one-north site in Buona Vista, wide enough for some development at the edges.

'You do it sensibly so that it merges with the landscape,' he said. 'But not like a shopping mall.'

So long as it was continuous, with even the north or south ends lopped off for development, he said: 'I can live with that.'

Environmental law expert Joseph Chun noted that what the land is earmarked for will hint at future land use.

Already, the Tanjong Pagar and Bukit Timah stations will be preserved, and there could be a green link between the two.

The land is unlikely to be a gazetted nature reserve, he said, but could become a nature area whose protection is administrative and not set in stone.

For example, Pasir Ris Park and Mount Faber are zoned as such nature areas. Or it could be like the Chek Jawa wetland area on Pulau Ubin, whose use is reviewed every 10 years.

Mr Chun noted that keeping land-use options open is valuable in itself. 'The moment you develop the land, you close off a lot of options and you can't un-develop it,' he said.

Property consultant Jeffrey Hong described the potential combination of development and greenery as 'perfect'.

Landed property or low-rise condominiums, he said, would enjoy better views of the greenery, while shops could be built at a stretch near Rail Mall, turning it into 'another little Holland Village'.

The URA did not say when it would make a decision, but it is inviting more public feedback on the Rail Corridor at its dedicated website, www.ura.gov.sg/railcorridor

It said: 'We agree with the many suggestions we have received from the public on how to make use of this unique linkage to encourage community activities and foster community bonding.'

Railway tracks to be open to public for two weeks
Removal of tracks and structures to be done in stages
Jasmine Ng Straits Times 2 Jul 11;

THE public can take a final stroll along the tracks formerly occupied by the Keretapi Tanah Melayu (KTM) before they are removed in two weeks' time.

The Singapore Land Authority (SLA) said that it will remove the tracks and ancillary structures of the railway in stages, in response to requests for public for a chance to trek along the tracks for the last time.

Yesterday, the SLA and Urban Redevelopment Authority (URA) announced the public works and future plans for railway land.

The lands have been vested in the Singapore government. As agreed with Malaysia, Singapore will remove the tracks and ancillary structures of the KTM railway and hand them to Malaysia.

The entire line of railway tracks, except for some localised areas, will be open to public from July 1-17.

In the meantime, minor works will be carried out at the Bukit Timah Railway Station and the railway crossings at Kranji Road, Sungei Kadut Avenue, Choa Chu Kang Road, Stagmont Ring and Gombak Drive.

From July 18, works to remove the railway tracks along the rest of the former railway line will commence, except for the three-kilometre stretch from Rifle Range Road to the Rail Mall, which will continue to be open to the public till the end of the month.

The removal works include the clearance of minor buildings, sleepers, tracks, cables, gates, posts and debris around the various sites from Tanjong Pagar to Woodlands, and is expected to be completed by the end of the year.

The URA said that it will comprehensively review and chart the development plans for the former railway lands and their surrounding areas.

As part of its review, the URA will study the possibility of marrying development and greenery, such as applying innovative strategies to maintain a continuous green link along the rail corridor without affecting the development potential of the lands.

It welcomes feedback and ideas from the community in shaping the future development plans for the railway lands.

It's not too late to say goodbye ...
SLA has agreed to allow the public access to railway tracks until July 17
Teo Xuanwei Today Online 2 Jul 11;

SINGAPORE - On Thursday, Tanjong Pagar Railway was packed with hundreds of Singaporeans who wanted to catch the historic sight of the last train pulling in.

Yesterday - the first day the Republic took over the station - there was no fanfare, just the odd photographer or two shuffling along the perimeter of the locked premises, snapping their final shots of the now-vacated 79-year-old building.

IT engineer Dave Ang, 35, said: "I wanted to capture the last look of the station for keepsakes." Engineer Rohaizat, 34, who took the KTM train to Kuala Lumpur weeks ago, visited the station again yesterday. "I took some photographs then so I thought I'll just come again to take some more pictures after the station has stopped operations," he said.

Although the Tanjong Pagar and Bukit Timah stations are off-limits to the public for now, as the Keretapi Tanah Melayu (KTM) and its tenants remove their furniture and equipment, the SLA, in response to requests by members of the public, will continue to make the entire line of tracks - except for some localised areas - accessible to the public from today till July 17.

During this period, minor works will also be carried out at the Bukit Timah station and railway crossings at Kranji Road, Sungei Kadut Avenue, Choa Chu Kang Road, Stagmont Ring and Gombak Drive, the SLA said.

A 3-km stretch of railway tracks from Rifle Range Road to The Rail Mall in Upper Bukit Timah Road, however, will remain open to the public until July 31.

The SLA added that it will start to remove the KTM railway tracks and equipment such as signal lights and level crossings from July 18. These works will be fully completed by Dec 31 and the structures will be handed over to Malaysia, as agreed.

Information of the re-opening of the railway stations - which will be gazetted as a national monument - will be provided at a later date. The Urban Redevelopment Authority (URA) said it will "comprehensively review and chart the development plans" for the former railway lands and their surrounding areas. One possibility being studied is a "continuous green link along the rail corridor without affecting the development potential of the lands", it said.

The public can offer feedback and suggestions on future development plans for the railway lands to the URA at www.ura.gov.sg/railcorridor.


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Committee recommends flood control measures

Esther Ng Today Online 2 Jul 11;

SINGAPORE - Humps just before basement entrances of commercial and residential buildings should be raised from 15cm to 30cm, while the ground level of these buildings should be 60cm above the road or highest-recorded flood levels.

These are some of the recommendations of the Inter-Agency Drainage Review Committee released on the PUB website yesterday, which are now open to public consultation.

The cost involved in adopting these changes would be "negligible" for new buildings but could be "technically challenging" for existing building as some sites may not have "sufficient dimensions to achieve such compliances", said president of the Singapore Institute of Architects, Mr Ashvinkumar Kantilal.

For instance, raising the crest level will necessitate a steeper approach gradient, but not all sites may be able to accommodate this, said Mr Ashvinkumar.

Still, he said, "a one-off implementation cost" should not be seen as being prohibitive and can be defrayed by some form of grant or subsidy from the relevant authority similar to the Building and Construction Authority's current practice in defraying part of the overall costs in converting existing buildings to increase accessibility for users, he said.

Associate Professor Susanto Teng from Nanyang Technological University's School of Civil and Environmental Engineering said: "Raising the crest levels from 15cm to 30cm is quite high and likewise the platform level of buildings, but it sounds reasonable and practical."

The amount of rainfall drains can hold have been more clearly defined based on catchment area or importance of the development.

For instance, drains designed to accommodate a once-in-25-year flood should be able to serve catchments between 100 hectares and 1,000 hectares, while drains serving a once-in-50-years rainfall should have enough capacity to serve areas covering 1,000 hectares. Catchments can be car parks or other paved areas and verges.

"There are a lot more paved areas than, say, 15 years ago, so rainwater flows much faster into our drains. These recommendations are timely and prudent," said Associate Professor Vladan Babovic from the National University of Singapore's civil engineering department.

In addition, the minimum reclamation levels have been increased by 1m to 104m along the southern coast and 104.5m along the northern coast, to cater for rising sea levels due to climate change and storm surges.

For areas affected by high tides, the proposed platform level - the required minimum ground level of a development - would be raised to 104m from 102.5m along the southern coast.

The previous parameters were 75cm above 101.75m - the highest tide level along Singapore's southern coast.

The proposed ground level for the northern coast will rise to 104.5m up from 103m.

The expert panel on drainage design and flood protection measures have reviewed these proposals, and without providing specifics, have advised adopting an even higher level of flood protection for critical installations like airports and business district areas.

They also recommended incorporating "detention ponds" which can help to mitigate constraints such as limited land for widening.

Inter-agency committee proposes change in drainage design
Esther Ng Channel NewsAsia 1 Jul 11;

SINGAPORE: The PUB has released a set of recommendations to avoid flood situations in commercial and residential buildings.

Crest levels at the basement entrances of commercial and residential buildings are to be raised from 15 to 30 centimetres, while the ground level of these buildings should be 60 centimetres above the road or highest-recorded flood levels.

These are some of the recommendations of the Inter-Agency Drainage Review Committee (IADRC) released on the PUB website on Friday.

In addition, the amount of rainfall drains can hold have been more clearly defined based on catchment area or importance of the development. For instance, drains designed to accommodate a once-in-25-year flood must be able to serve catchments between 100 and 1000 hectares.

Drains serving a once-in-50-years rainfall must cover 1,000 hectares.

In addition, the minimum reclamation levels have been increased by one metre to 104 metres for the southern coast and 104.5 metres along the northern coast.

The minimum reclamation level was raised to cater for rising sea levels due to climate change and storm surges.

For areas affected by high tides, the proposed minimum ground or platform levels would be raised by about 1.5 metres from 102.5 metres to 104 along the Southern Coast and from 103 metres to 104.5 metres along the Northern Coast as additional safeguards from rising sea levels due to climate change.

-CNA/ac


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NParks invites public to photography competition

Ashutosh Ravikrishnan Straits Times 2 Jul 11;

PHOTOGRAPHY buffs can participate in a year-long photography competition in 2011.

Organised by the National Parks Board, 'City In A Garden' will be a photography competition based on the subjects of Singapore's greenery and biodiversity.

In the open category, participants are invited to submit photographs that they feel best represent four themes: 'Our Parks & Gardens', 'Trees & Forests', 'BiodiverCity', and 'My City in a Garden'.

Participants will compete for cash prizes worth $29,000 as well as other prizes worth over $27,000, including an expedition to Burkina Faso, West Africa.

Younger participants can also join a junior and youth category in November 2011.

For more details, go to: www.nparks.gov.sg


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Indonesia: Haze affecting Dumai residents' respiratory health

Antara 1 Jul 11;

Dumai, Riau Province (ANTARA News) - Residents of Dumai city, Riau Province, have begun to suffer from respiratory problems due to haze produced by forest and plantation fires in the province.

"At night, the air becomes choking. The smell of haze also stings. The haze seems to be very thick," Suhendra (32), a local resident, said here Friday.

The haze was much thicker in the evening than in the morning or afternoon, according to him.

"We hope the government will take a firm stance against those burning plantation areas. If possible, put them in jail, so there will be no more such incident," he said.

Visibility in Dumai is estimated to be below 800 meters. Dumai health authorities said the air quality in the city was deteriorating due to the haze.

The Air Pollution Standard Index Board of PT Chevron Pacific Indonesia (CPI) in Dumai shows that the air quality index on Thursday (June 30) was at 153 PSI (Pollutant Standard Index), meaning unhealthy.

"We call on the people to be watchful of various diseases concerning respiratory problem," Marjoko Santoso, head of the Dumai health service, said.
(Uu.F001/HAJM)

Editor: Priyambodo RH


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Raja Ampat and mining: Sea of trouble

Tom Allard The Age 2 Jul 11;

ABOUT once a month, a ship from Townsville makes the long journey to Raja Ampat, a seascape of astonishing beauty and diversity inthe far western reaches of Indonesian New Guinea.

Here, where the westerly currents of the Pacific Ocean flow into the Indian Ocean, hundreds of improbable domed limestone pinnacles rise from the sea, encircling placid, turquoise lagoons. And if the 612 islands and countless shoals and reefs of Raja Ampat take the breath away, they only hint at the treasures below.

This remote part of West Papua province is the hub of the world's marine biodiversity, home to 75 per cent of its coral, as well as 1500 fish species, including huge manta rays, epaulette sharks that walk on the sea floor with their fins, turtles and an array of weird and wonderful fish.
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Yet the vessel that makes the regular trip to and from Townsville does not bring tourists or divers. There are no scientists on board to study this marine wonderland. Rather, it is in Raja Ampat to take a consignment of tens of thousands of tonnes of the red clay soil, rich in nickel and cobalt, and destined for the Yabulu refinery owned by one of Australia's richest men, Clive Palmer.

According to conservationists and marine scientists, this mining activity and the prospect of further exploitation puts one of the world's most precious ecosystems under threat.

Raja Ampat's significance to the world is immense. It is the heart of the famed Coral Triangle, and the strong currents that rush between its islands help seed much of the 1.6 billion hectares of reefs and marine life that spread from the Philippines down to the Solomon Islands.

"I'm appalled by what's going on," says Dr Charlie Veron, a former chief scientist from the Australian Institute of Marine Science who has surveyed the region on many occasions. "If you had a rainforest with the most diverse range of species in the world and people started mining there without doing any kind of proper environmental impact study, there would quite rightly be outrage. Well, that's what's happening here."

The impact on local communities has also been devastating. What were once close-knit villages are now divided as competing mining companies offer financial inducements to residents for support. And, in a sadly familiar tale for the Papua region, where separatist sentiments linger, the benefits of exploiting its resources are largely flowing outside the region. Derisory royalties go to landowners, and minuscule salaries are being paid to locals who gain employment.

Deep fjord-like bays cut into the hinterland of mountainous islands, framed by vertiginous jungle-clad cliffs that drop steeply into the water. There are oceanic atolls, shallow bays with fine white-sand beaches, snaking rivers and mangrove swamps.

The vessels sent to collect the nickel and cobalt for Clive Palmer's Queensland Nickel dock at Manuran Island, where the mining has continued unabated despite a decree by West Papua Governor Abraham Atururi banning all mining activity in Raja Ampat.

"The mining started in 2006. There were protests, but the military and police came and they stopped them," says Yohanis Goram, from Yayasan Nazaret, a local NGO that opposes mining.

The operator of the mine, PT Anugerah Surya Pratama (PT ASP), has promised environmental safeguards but, according to one local from nearby Rauki village, they are ineffective. "When it rains the sea turns red, sometimes yellow," says the village elder in a phone interview. "The runoff is supposed to go into a hole but it comes out [into the sea]."

Yosias Kein hails from Kapidiri, an island near Manuran that claims customary ownership. "The mining waste damaged the coastal areas and covered up the coral reefs. Besides, it is difficult for people to get fish now. Fishermen in Kabare village, also in Rauki village, saw the waste went down into the seas near Manuran. Now they have to go fishing a bit further to the east or to the west."

The strip mining for nickel leaves the landscape barren, and the steep cliffs of Raja Ampat's islands mean heavy rainfall overwhelms the drainage systems and sends the soil into the water.

The impact is twofold and nasty for coral, says Charlie Veron. "Sedimentation sinks onto the coral and smothers it. But worse is ‘clay fraction', where very fine particles are suspended in the water, blocking the sunlight."

Photos taken from Manuran and supplied to The Saturday Age show murky water and dead coral after heavy rains.

PT ASP is a Jakarta-based mining company, and also owns PT Anugerah Surya Indotama (PT ASI), another mining outfit that operates on Kawe Island in Raja Ampat, despite a court order to desist due to a conflict over mining rights with a West Papua-based company. The ownership of the companies remains a mystery, although West Papua is rife with speculation that senior politicians and military figures have a stake.

The speculation is easy to understand, as the Jakarta company seems to have extraordinary pull at the highest levels of government in both Jakarta and Raja Ampat. When rival mining company PT Kawei Sejahtera Mining (PT KSM), owned by local man Daniel Daat, began loading its first shipload of nickel in 2008 at Kawe, three gunships and an aeroplane were sent to stop the consignment after PT ASI, which also claims a mining licence for Kawe, complained. Daat was thrown into prison.

The mines at Manuran and Kawe are guarded by military and police who locals say are on the company payroll. And, while 15 other mining companies have been pushed out of Raja Ampat since the Governor's decree, PT ASP and PT ASI have remained.

At the very least, the two companies appear to have a cavalier approach to doing business in Raja Ampat. Police documents obtained by The Saturday Age reveal the companies allegedly bribed the bupati, or regency head, of Raja Ampat, Marcus Wanma, to gain mining licences. Wanma was paid $36,000 to issue the mining licences in 2004, and a further $23,270 for "entertainment" purposes, the documents say, citing police interviews with 16 witnesses, including Wanma's staff and Yos Hendri, director of PT ASI and PT ASP.

The documents record that about 670 million Indonesian rupiah (about $122,000 on currency valuations at the time) was paid in 2004 to Wanma for nine mining licences, and only 197million rupiah was deposited in the regency's bank accounts. "The rest of the 500 million [rupiah] was used for the personal interest of [official] Oktovanius Mayor and Marcus Wanma," the documents say.

Wanma, in the end, escaped prosecution and remains the regency head. He has been incapacitated with a serious illness and is believed to be in Singapore recuperating. He was unavailable for interview, and Raja Ampat officials declined to comment.

Whether the licences were corruptly obtained or not, the fees paid for them are desultory.

The open-cut mining undertaken on Manuran is cheap and low tech. After clearing the vegetation, workers simply dig up the soil, haul it into trucks and take it to the docks, where it is sent to processing facilities where pure nickel, used in stainless steel, is extracted. The mine's wharf is nothing more than a tethered barge with no cranes. Costs for the company consist of little more than maintaining about 40 trucks and heavy-moving equipment and the simple wharf.

According to villagers and employees, most of the mine's labourers earn between $170 and $200 a month. Customary landowners also receive a royalty, but an investigation by The Saturday Age reveals that it is tiny.

Soleman Kein, an elder from Kapidiri, says a new deal was negotiated last year increasing landowners' share of the mine's income from 1000 rupiah (11¢) a tonne to 1500 rupiah.

An industry expert with knowledge of Raja Ampat's high-grade nickel laterite ore says PT ASP would be getting between $US40 ($A37) and $US100 a tonne, depending on the fluctuating world prices. The average price would be about $US60 a tonne, he says.

A single 50,000-tonne shipload of nickel laterite ore earns the miner, based on average price of $US60 a tonne, $US3 million. The mine at Manuran Island typically does two shiploads a month. If a tonne of nickel laterite sells for about $US60, the locals are getting less than a 0.3 per cent share.

"These companies want a lot of money for not much effort," says one veteran miner with two decades of experience in Papua. "They pay as little attention as they can to environmental standards and take the money and get out ... The amount the locals get is pitiful."

Yos Hendri, a director of both PT ASI and PTASP, pulled out of an interview at the last minute and declined to respond to detailed emailed questions. But according to one source , the local government gets another 3000 rupiah a tonne, while a further 2000 rupiah a tonne is devoted to infrastructure.

All up, the source says about $200,000 has been spent on local villagers in royalties and infrastructure since 2007. In the meantime, the company has earned well over $150 million from sales, although between 4 and 5 per cent of that revenue should flow back to the central government's coffers.

To be sure, some of the villagers are happy with the arrangement. Soleman Kein is delighted with his new house, paid for from the infrastructure fund. "My house used to be made of sago leaves; now the company has renovated it, our walls now are made of bricks, we have a roof made of zinc and the interior part of the house is beautifully painted," he says.

But villagers from Rauki say only 10 of 76 homes promised in 2009 have been built. And disputes rage between clans over who gets the money.

"Conflicts emerge because certain groups of families claim ownership of Manuran Island while others reject their claims," says Yosias Kein. "Sometimes, there have been physical conflicts, sometimes an exchange of arguments. The problem is the company does make some payments but the amount is not equal."

The squabbles have torn apart what were once tight-knit communities. The simmering discontent is "like a volcano", says one Rauki native, that "will erupt one day".

"Corporations are the ones that get the profits," says Abner Korwa, a social worker from the Belantara charity, who has closely tracked the mining. "Once the deposit is exhausted, the big corporation leaves and we will be left alone with the massively damaged environment."

Queensland Nickel has a sustainable development policy that strives for "minimising our impact on the environment" and commits to "pursue honest relationships" with communities.

The company declined to be interviewed or respond to emailed questions. "We don't comment on the business of our suppliers," says Mark Kelly, Queensland Nickel's external relations specialist. Clive Palmer's publicist, Steve Connolly, also declined to comment.

Korwa says companies such as QN should not shirk responsibility for the behaviour of their suppliers, given that they make considerable profits from the arrangement. "They don't have to invest too much in Raja Ampat. They don't have to be troubled by mining concessions, the way business is done here," he says. "But they can still get the nickel".

Oxfam Australia, which runs a mining ombudsman, says there is a clear obligation for companies such as QN thatprocess raw minerals to be held accountable for their suppliers.

"Australian companies need to make sure that they are only buying minerals from other companies that respect workers' rights, community rights and the environment. If there's a good reason to believe that a supplier is causing harm, the company should undertake a thorough assessment," says Oxfam Australia executive director Andrew Hewett. "If any issues are found, the company should, in the first instance, work with the supplier to try to rectify the problem. If this doesn't work, the company should reconsider its business relationship with the supplier."

QN should be well aware of the issues in Raja Ampat. It bought the Yabulu refinery from BHP Billiton in 2009 when the mining giant pulled out of Raja Ampat, selling its mining rights for the region's Gag Island amid concern about the ecological and social impacts of mining.

The simmering discontent is not restricted to the villages around Manuran, but is ripping apart other villages whose people have been the custodians of Raja Ampat's wonders for centuries. For them Raja Ampat — literally Four Kings — was created by eggs that descended from heaven to rest in the water.

The dispute at Kawe Island is particularly poisonous. It arises because QN's supplier holds a licence issued by Wanma that, it argues, supersedes one issued by the governor of West Papua to PT KSM, the company run by the unfortunate Daat, who, besides being a businessman and a politician, hails from Raja Ampat's Maya people.

Korinus Ayelo is the village chief of Selpele, which has customary ownership of Kawe, and supports Daat's PT KSM. But rival company PT ASI engineered the highly contested elevation of another chief, Benyamin Arempele, who endorsed its rights to mine.

Repeated legal cases have found in favour of Daat but PT ASI continues todevelop its mine and conduct exploration. "They are still working today, guarded by the police," says Ayelo, adding that villagers who were previously close now don't talk to each other. "There's a distance between our hearts," he explains. "The people are uneasy. PT ASI uses the military. There are TNI [armed forces] everywhere. People must face the presence of TNI every day."

Daat says high-level political and military support from Jakarta is behind PTASI's continued operations. "It is impossible to get such support for nothing. I believe the profits from Manuran Island are shared by several parties, parties that support this company," he says. "I won this case at the District Court, at the Provincial Court and at the Supreme Court. How great is the Indonesian law system? They are still in Kawe doing exploitation despite the courts' rulings."

Regardless of which company has the legitimate mining rights at Kawe, there are many villagers and conservationists who want mining stopped outright at Kawe, and in the whole of Raja Ampat.

Kawe is a place of huge environmental significance, close to the stunning Wayag archipelago of karst limestone pinnacles and host to 20 world-class diving sites as well as green and hawksbill turtle breeding sites and shark pupping grounds.

Photos obtained by The Saturday Age show that earlier mining activity at Kawe led to the heavy red soils being flushed into the sea, covering the reefs, a problem that will only get worse once full operations resume.

"We are very concerned about the potential for sedimentation and metal deposits to be transported by Kawe's strong currents and moved up to Wayag and down to Aljui Bay," says Mark Erdmann, senior adviser to Conservation International's marine program in Indonesia.

Raja Ampat is theoretically protected by seven marine parks and a shark conservation zone, but while enforcement against illegal fishing is actively conducted, land-based threats such as mining on nearby islands continue unabated.

Indonesia's government has recognised the extraordinary habitats in Raja Ampat. It put the region on the "tentative list" to become, like Australia's Great Barrier Reef, a UNESCO world heritage area in 2005. But the application has stalled due to inaction by the government, many suspect because it wants to exploit the area's natural resources through mining and logging.

In a deeply worrying development forconservationists, nickel and oil exploration restarted this year after the local government issued new exploration permits

"There is tremendous wealth in the natural environment from fishing, pearling and tourism," says Erdmann, citing a State University of Papua survey that found the long-term benefits from theseeco-friendly economic activities outweighed the short-term gains from mining.

"Mining and this precious, pristine eco-system can't co-exist in the long term."


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Best of our wild blogs: 1 Jul 11


9 Jul (Sat): The Native Plants of Singapore: Growing your Natural Heritage – Prof Hugh Tan from Raffles Museum News

Recce of Ubin’s western beaches with Outward Bound Singapore from News from the International Coastal Cleanup Singapore

The Macro Shoot That Turned into Something Else
from Macro Photography in Singapore

Juveniles of the Scaly-breasted Munia
from Bird Ecology Study Group

Fishes and other surprises on oil-slicked Tanah Merah
from wild shores of singapore

Who let these birds out?
from Life's Indulgences

Common Asian Toad
from Monday Morgue


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Cambodia urged to stop sand dredging operations

ABC Radio Australia 1 Jul 11;

Conservation groups and eco-tourism operators in Cambodia's Koh Kong province are urging the government to stop sand dredging operations they say are decimating fish stocks and destroying businesses.

They are working together to oppose the dredging on the Tatai river which is being carried out by ruling party Senator and business tycoon Ly Yong Phat.

Presenter: Clara Tran
Speaker: Janet Newman, Rainbow Lodge; Leslie Perlman, program manager, Wildlife Alliance; Mao Hak, director of rivers at Ministry of Water Resources Cambodia

Listen:
Windows Media

TRAN: Englishwoman Janet Newman has been running her eco-tourism resort, the Rainbow Lodge, on the Tatai river for the past three and a half years.

One morning in May, she awoke to find the beauty and tranquility of her home shattered by an influx of sand dredging barges.

NEWMAN: It was just chaos. they worked all night. We were not able to sleep. In the morning even more boats turned up and it was literally like a traffic jam on the river.

TRAN: The sand is being dreged out of Cambodia's estuaries and shipped to Singapore to help expand their territory.

In 2009, Prime Minister Hun Sen's government banned sand dredging for export, but a report by environment watchdog Global Witness says the lucrative trade continues to threaten Cambodian ecosystems and livelihoods.

Last year, Global Witness estimated Koh Kong's annual sand trade with Singapore was worth $US248 million.

But its the people and businesses of Koh Kong who are the losers.

Ms Newman says the noise and pollution from the vast quantities of ships, tugboats and cranes pumping sand from the river have made it impossible to host eco-tourists, starting to trickle into the remote province.

And the negative impact goes beyond foreign tourists.

NEWMAN: It's not just about the Rainbow Lodge but the villagers haven't been able to sleep. There is nothing left in the river. You never see children swimming in the river anymore because it is covered in oil and diesel and rubbish.

TRAN: Leslie Perlman, program manager of Wildlife Alliance, says there are serious concerns about the social and environmental impact of the dredging.

PERLMAN: The villagers are reporting dramatically shrinking crab and shrimp patches as the dredging destroys the habitat in the river and along the banks. Additionally in other areas, the dredging is eroding so much sand that the river banks are collapsing.

Mao Hak, director of rivers at the Ministry of Water Resources, says the government has a sand and mining resources committee that decides which companies it allows to extract sand for export.

MAO HAK: Before we give the permission....(fade down)

TRAN: Mr Mao says before the government gives sand dredging permission, the company seeking the licence is responsible for carrying out an impact study on that area.

According to a copy of the permit obtained by the Phnom Penh Post newspaper, the LYP Group, owned by Senator Ly Yong Phat, has exlusive rights to sand dredging on the Tatai river. The company's representatives could not be reached for comment.

Mao Hak from the Ministry of Water Resources says information should have been given to local communities.

MAO HAK: They have some...(fade down)

TRAN: Mr Mao claims the company would need to involve the local people living in the area about the proposed operation. But Ms Newman says this did not happen.

NEWMAN: As far as I'm aware, there was no public consultation. There was certainly no information or notices about this activity whatsoever.

TRAN: Although there don't appear to have been any official consultations, workers on the sand barges have told residents in Koh Kong they are Vietnamese soldiers and they have weapons onboard.

Ms Newman says Cambodian Government departments working on environment, tourism and water resources have expressed sympathy, but she now thinks it's up to people power to stop the destruction taking place on Tatai river.

NEWMAN: I hope we can get it stopped before August or at the very least get some kind of regulation on what is going on now. Myself and others, including villagers who have signed a petition are actively trying to work with the local government to try and get this stopped because the effect is immediate. Of course the longer it goes on the greater the long-term effects as well.

TRAN: Wildlife Alliance's Leslie Perlman says the law offers a glimmer of hope for Koh Kong province.

PERLMAN: Sand dredging has gone up and down in this country. The prime minister put a moratorium on the exportation of sand. So legally, if the sand is going to Singapore or another country - exported out of this country - that's illegal. That could be another legal way we are looking to stop this.


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Cambodia: Sand dredging hits eco-resort

David Boyle and Vong Sokheng Phnom Penh Post 1 Jul 11;

An enormous sand dredging operation in Koh Kong province has escalated, a resort owner said yesterday, with boat crews allegedly trespassing onto private land and digging sand within hundreds of metres of the complex.

Janet Newman, the owner of the Rainbow Lodge eco-tourism resort, said yesterday that seven boats, three that arrived for the first time on Monday, had begun dredging “enormous” amounts of sand just 200 metres from her property.

“We found out one of the customers was actually talking to the crew because they’d tied one of the boats to a tree and were actually sitting on my property in one of the hammock huts,” Newman said.

“It was chaos on the river. You just wouldn’t believe how many boats there were in total. It was so bad that they couldn’t even get past each other.”

Ruling party senator Ly Yong Phat’s LYP Group was awarded a concession totaling more than 32 square kilometres to dredge sand for export on the Tatai river in September 2010.

Ly Yong Phat told The Post last week that LYP Group had halted export operations, which had been ongoing for the past year, due to lack of demand from Singapore.

Mao Hak, director of river works at the Ministry of Water Resources, said yesterday that a technical expert had “thouroughly examined all corners of the impact from dredging”.

“We clearly limited the coordinates for the company. Therefore, if the company follows the rules, there will be no impact.”

A total of nine cranes including “monstrous machines that have digger buckets and a conveyor belt” had moved into nearby areas on the Tatai river, Newman said, claiming they were staffed by Vietnamese and Chinese crews.

Koh Kong provincial deputy police chief, Sin Sen, said he had yet to receive any reports of alleged trespassing by LYP Group staff members but vowed to investigate the claims if the complainants came forward.

“I think that if that is actually happening and there are complaints to the police we will conduct an investigation because it is an illegal activity if they are doing that,” Sin Sen said.

Newman said Ly Yong Phat’s office had responded to a letter of complaint she’d sent and promised to try and find a resolution to the matter.

Ly Yong Phat could not be reached for comment by The Post yesterday.

Questions remain as to whether LYP Group’s operations violate a 2009 ban on dredging sand for export made by Prime Minister Hun Sen.

Newman said a man, who she believed to be Singaporean, had called her to apologise for the unintended consequences of the dredging and promised to find a resolution. He identified himself as the head of one of the boats, she added.

Brandon Ong, an official at the Singaporean Ministry of National Development, said by email yesterday that the ministry was looking into recent sales of sand and would respond to questions from The Post at a future date.


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Panel of experts to review Singapore's drainage design, flood measures

Esther Ng Today Online 1 Jul 11;

SINGAPORE - Their appointments were announced yesterday and their work - to review drainage design and flood protection measures - will begin next Friday, when the panel of local and foreign experts meet Environment and Water Resources Minister Vivian Balakrishnan.

Chaired by National University of Singapore's engineering dean Chan Eng Soon, the panel's priorities will entail a "detailed look" at the current drainage infrastructure, topography of flood prone areas and potential new technological solutions.

"We'll cover a whole range of issues from rainfall to surface run-off to drainage design," Professor Chan told MediaCorp.

"We'll also be looking at mitigation measures and constraint factors. The panel will rationalise over these matters and issue an advisory which we think would be appropriate."

"For now, it is 'premature' to talk about mitigation measures."

"I'm sure the panel members have different ideas, so we need to deliberate on these issues with rigour," he said and added that, with time, the panel will look at inputs from the public.

The panel appointed by the Ministry of Environment and Water Resources (MEWR) comprise of academics, private sector engineers, climate change experts and civil servants. Prof Chan said: "What they'll bring to the panel is their broad knowledge and individual experience."

For instance, Professor Lui Pao Chuen, adviser to the National Research Foundation and Chief Defence Scientist for 22 years, is used to looking at complex systems, while urban flood specialist Adri Verwey is one of the pioneers in flood modelling software and has worked in places such as Hong Kong, said Prof Chan.

The panel also includes Professor Toshio Koike from the Department of Civil Engineering, University of Tokyo and Mr Kan Yim-fai, chief Engineer of the Land Drainage Division, Hong Kong's Drainage Services Department.

The review is expected to take six months. Apart from the 11 panel members named yesterday, the MEWR is awaiting confirmation from a few other experts.

Meanwhile, recommendations from the Inter-Agency Drainage Review Committee formed last August is now up on the Public Utilities Board (PUB)'s website. These include enhancing drainage design standards to cope with more intense rain, requiring new developments to comply with higher crest levels and requiring building managers to enhance flood protection measures.

The public can email their comments to PUB_feedback@pub.gov.sg. ESTHER NG


PANEL MEMBERS
Chairperson: Prof Chan Eng Soon, Dean, Faculty of Engineering, National University of Singapore
Mr Kan Yim-fai, chief engineer, Land Drainage Division, Hong Kong’s Drainage Services Department
Prof Toshio Koike, Department of Civil Engineering, University of Tokyo
Dr Les Lampe, vice-president, Black and Veatch
Mr Lim Keng Kuok, senior consultant, CPG Consultants
Lim Peng Hong, president, Association of Consulting Engineers Singapore
Prof Lui Pao Chen, adviser, National Research Foundation
Mr Laurens van der Tak, vice-president, CH2M HILL
Associate Prof Tan Soon Keat, School of Civil and Environment Engineering, Nanyang Technological University
Dr Adri Verwey, senior urban flooding specialist, Deltares/SDWA
Prof Yong Kwet Yew, Civil Engineering Department, and vice-president, NUS

Expert panel to review drainage system
Feng Zengkun Straits Times 1 Jul 11;

ELEVEN experts, including five from overseas, have been tapped to review Singapore's drainage system and flood-prevention measures and come up with new ideas.

They will examine the landscape of flood-prone areas islandwide, current and future building plans, as well as local weather patterns.

The review, expected to be completed in six months, will be submitted to Minister for the Environment and Water Resources Vivian Balakrishnan.

The panel will be headed by Professor Chan Eng Soon, 56, dean of engineering at the National University of Singapore.

The experts were selected based on recommendations from industry professionals and academics.

The overseas experts are: Mr Kan Yim-fai, chief engineer at Hong Kong's drainage services department; civil engineering professor Toshio Koike from Tokyo University; Dr Les Lampe, vice-president of Black and Veatch, a US-based global water company; Netherlands-based urban flooding specialist Dr Adri Verwey; and Mr Laurens van der Tak, vice-president of CH2M HILL, an industry leader in water reuse.

The Straits Times understands that the Japan and Hong Kong experts were picked because these places have highly urbanised settings similar to Singapore's.

The 11 will meet Dr Balakrishnan next Friday to work out the details of their review. The ministry said more experts may be added to the panel, which will also look at the recommendations of an inter-governmental agency drainage review committee set up after last year's Orchard Road flood.

The recommendations include improving drainage design standards and requiring new buildings to have higher platforms.

These will be published today on national water agency PUB's website and the public can give feedback via e-mail at pub_feedback@pub.gov.sg

Prof Chan said the increased number of experts this time round reflects the larger scope of the work. He noted that the new panel has a wider mix of people with practical experience as well as academic theory.

Mr Steven Goh, executive director of the Orchard Road Business Association, noted that 'the businessmen on the ground' are not represented in the new panel.

'We hope that the expert panel will consider reaching out to us and hearing some of our views,' he said.

Flood experts appointed
Channel NewsAsia 30 Jun 11;

SINGAPORE: The Ministry of the Environment and Water Resources (MEWR) has appointed an expert panel to review the drainage design and flood protection measures that will be implemented in Singapore over the next decade.

The panel, consisting of local and overseas experts, will be chaired by Professor Chan Eng Soon, Dean of the Faculty of Engineering at the National University of Singapore.

The members of the panel were drawn from academia, professional bodies, private and public sectors. Their fields of expertise include civil and hydraulic engineering, flood control and climate science.

The terms of reference for the expert panel include an assessment of the current drainage infrastructure, assumptions and parameters for modelling, topography of flood prone areas, projected weather patterns, current and future building plans, information systems, and potential new technological solutions.

The review is expected to be completed in six months.

- CNA/ir


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PUB tests ceramic membrane technology

Dickson Li Business Times 1 Jul 11;

THE Public Utilities Board (PUB) yesterday launched a $5 million ceramic membrane demonstration plant at its Choa Chu Kang Waterworks.

The new ceramic membrane lasts four times longer than the current polymeric membranes. 'Although the cost of ceramic membranes is higher . . . it has a much longer lifespan of 15-20 years,' said Harry Seah, director of PUB's technology & quality water office.

PUB selected PWN Technologies (PWNT) of the Netherlands to build the plant, which has a daily capacity of 1.2 million litres. It will go through an 18-month trial, at the end of which PUB will evaluate the practicality of implementing this technology.

'The real advantage is on the operational costs. With a long lifetime on the membrane, you don't have to change it as often,' said Jonathan Clement, director of technology application at PWNT. 'With added, efficiency, we keep operating costs low, and this translates into less pressure to increase prices of water,' added Mr Seah.

Adopting the new technology will also mean cleaner water. Using the ceramic membrane, ozone can be added into the system - something which cannot be done with the polymeric membrane.

To support this plant, PWNT will be given a grant under the Technology Pioneer Scheme, from the Environment & Water Industry Programme Office.

PUB trial may lead to cheaper water prices
Tests being done on longer-lasting, tougher material for filtering process
Feng Zengkun Straits Times 1 Jul 11;

A NEW water-treatment method being tested floats the promise of keeping water prices affordable for consumers in the long run.

A trial plant, sited at national water agency PUB's Choa Chu Kang water- treatment facility, uses a new material that is expected to last at least 20 years - more than four times the lifespan of the polymeric membranes being used now.

The new material for sieving out impurities can also process up to 10 times more water, withstand more pressure, and be cleaned with a wider range of chemicals.

If the trial proves successful, it would mean that the cost of producing water could become cheaper and water prices could remain low in Singapore, said Mr Harry Seah, director of technology and water quality at PUB.

The $5 million trial, a collaboration with Dutch water firm PWN Technologies, is expected to last until 2013.

It involves a new type of ceramic membrane that was tested on a smaller scale here between 2007 and 2009.

The current trial is to assess whether the material is cost-effective on a larger scale and make sure the water quality matches that yielded now by treatment plants.

The rate for water is $1.52 per 1,000 litres, if consumption is less than 40,000 litres per month.

On average, each person uses 154 litres of water a day. This comes from recycled seawater and rainwater, Newater and water imported from Malaysia.

The new treatment method will be able to produce water for both industrial and household uses.

Mr Jonathan Clement, PWNT's director of technology application, said the new material has been used in other industries, such as chemical processing and pulp and paper.

Until recently, the cost of using it in water treatment was too expensive.

'It was only in the last few years that we discovered how to put the membranes together so that installing them is as cheap as installing the polymeric membranes,' he said.

The trial plant is expected to process up to 1.2 million litres of water a day, enough to supply the needs of 8,000 residents.

Raw water will be drawn from Kranji and Pandan reservoirs, and reservoirs such as Tengeh, Poyan, Murai and Sarimbun in the western catchment area.

Mr Seah said the plant will be put through its paces processing water of varying purity. The processed water will be tested and recycled through the other treatment plants in the Choa Chu Kang facility to avoid wastage.

If the trial is successful, PUB will consider replacing the membranes in treatment plants with the new material.

The project is funded by the Environment and Water Industry Programme Office, set up in 2006 with a fund of $330 million to support research and development efforts over five years.

The new membrane will also be showcased at next week's fourth annual Singapore International Water Week.

Singapore explores new technology to treat drinking water
Lim Jing Jing Channel NewsAsia 30 Jun 11;

SINGAPORE: A new technology is being tested for its potential to treat drinking water in Singapore.

A S$5 million water treatment plant, which will use ceramic membrane technology to treat drinking water, has been built at the Choa Chu Kang Waterworks after two years of planning.

The "demonstration plant" is funded by a grant from the Environment and Water Industry Programme Office under the Ministry of the Environment and Water Resources.

Raw water will be drawn from the Kranji, Pandan and reservoirs in the western catchment area, which includes the Tengah, Poyan, Murai and Sarimbun Reservoirs.

The plant is able to treat 1.2 million litres of water a day. Its performance will be tested over 18 months.

Untreated water in Singapore is currently filtered through polymeric membranes.

The ceramic membrane has a projected lifespan of 20 years, four times longer than the polymeric membrane.

The initial cost of building a ceramic treatment plant is higher but potential savings come in the long term, largely due to the durability of the ceramic membrane.

As a result, PUB said that ozone can also be added to disinfect water.

According to PWN Technologies, which built the plant, its ceramic membrane technology also has a lower energy consumption compared to conventional treatment methods.

This could mean cheaper or more readily available drinking water in Singapore as the population grows, even while the world's supply of potable water shrinks.

- CNA/fa

New technology could mean cheaper water for consumers
Lim Jing Jing Today Online 1 Jul 11;

SINGAPORE - A S$5 million trial which is currently underway could result in cheaper water for consumers.

National water agency Public Utilities Board (PUB) said yesterday that it has built a water treatment plant in Choa Chu Kang to test the use of a new ceramic membrane technology.

The trial, a collaboration with Dutch water firm PWN Technologies, is expected to last for 18 months.

According to the PUB, ceramic membranes last about 20 years, four times longer than the current polymeric membranes - thus resulting in a lower cost of producing water should the trial be successful.

The new material for sieving out impurities can also process up to 10 times more water, withstand more pressure and be cleaned with a wider range of chemicals.

The treatment plant, which is funded by Singapore's Environment and Water Industry Programme Office, is able to treat 1.2 million litres of water a day, about half the size of an Olympic-sized swimming pool.

PWN Technologies said this is the first time their technology is being used in a pilot facility outside the Netherlands.

Raw water will be drawn into the ceramic membrane plant from the Kranji and Pandan reservoirs in the western catchment areas, which includes the Tengeh, Poyan, Murai and Sarimbun reservoirs.

For the first three months, water treated using ceramic membrane technology will be mixed back into raw water. After that, if the quality of the treated water meets the PUB's requirements, the treated water will be used.

PWN Technologies said it believes ceramic technology is suitable for Singapore.

Apart from being cheaper, these membranes are in a single vessel which makes such treatment plants more compact, the company said.


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'Vertical farms' make buildings greener

Straits Times 1 Jul 11;

RESEARCHERS here have found a way to grow, say, kangkong and bean sprouts in 'vertical farms' on the sides of buildings, removing the need for agricultural land.

The carbon dioxide needed by plants to grow will come from the building itself, making it greener.

The method - from a project started in 2008 and funded by the National University of Singapore (NUS) - has drawn interest from several overseas firms.

Mr Allan Lim, 38, chief executive of local company Alpha Biofuels which is partnering NUS, said the firm has successfully grown bean sprouts and kangkong. 'The system is especially useful for Singapore because we have many buildings and not much land for farms,' he said.

The system involves creating glass enclosures on the sides of buildings. The vegetables or fruits are grown on scaffolds between two panes of glass.

Carbon dioxide from air-conditioners and other systems in the building are piped into the glass cages and absorbed by the plants.

The researchers found that each plant starts absorbing at a much faster rate after the gas exceeds a certain level. The faster rate causes the plants to grow quicker, which means crops can be harvested more often in the year.

The method has several advantages over traditional 'green walls' where plants grown on the sides of buildings take in carbon dioxide from the air outside.

The glass enclosures recycle the carbon dioxide from inside the buildings, making them greener.

Temperatures and the level of carbon dioxide in the glass enclosures can be maintained at selected levels, which means the plants are not exposed to the vagaries of weather and can be cultivated throughout the year.

The glass enclosures also insulate the building, which means that fewer air-conditioners and heating devices are needed.

The system can also be used in other industries that produce carbon dioxide, such as mines. The Wellard Group, an Australian agricultural firm, has expressed interest in using it to provide food for miners in remote mines.

If the deal is successful, carbon dioxide from the mines will be pumped into large containers outside the mines where the crops can be grown.

Researcher Kua Harn Wei, 40, an assistant professor at NUS' School of Design and Environment, said more work needs to be done to find the optimal carbon dioxide level for each plant.

The researchers are also testing other crops and making sure the faster rate of gas absorption does not make them unsafe to eat.

Talks are ongoing for the system to be adopted in the Sino-Singapore Tianjin Eco-City in China.

The Government has set a target of 10 per cent of vegetables here to be grown locally within three years, up from 7 per cent now.

FENG ZENGKUN


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