Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Climate change risk to islands under-estimated

Climate change risk to islands under-estimated.

Decades of work to create safe island havens for some of the world’s rarest species could be undone if sea levels rise as high as climate scientists predict, according to a new study.

Decades of work to create safe island havens for some of the world’s rarest species could be undone if sea levels rise as high as climate scientists predict, according to a new study.

Researchers say conservation projects on islands involving pest eradications and translocation of endangered species could be undone because many are low-lying and in danger of being submerged by sea level rises of up to 2.3 m by 2100.

The study estimates up to 20,000 islands globally could be entirely submerged threatening hundreds of endemic species with extinction. Of 604 islands where invasive species have been eradicated, 26 are predicted to be completely inundated at a sea level rise of 1m.

“New Zealand has led the world in pest eradications and translocations for decades, but with impending climate change, we will need to shift our focus to conservation programmes on larger islands such as Rakiura (Stewart I) and Aotea (Great Barrier I), and the New Zealand mainland,” says Dr James Russell of the University of Auckland’s School of Biological Sciences, co-author of the study involving researchers from the University of Paris Sud and Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO).

As well as rising sea levels, vulnerable species face a predicted increase in the number and intensity of cyclones, greater tidal ranges – causing more seawater flooding – and changing climatic conditions leading to habitat loss. And unlike their mainland counterparts, island species have nowhere to go.

“It may be that eventually we will be faced with some tough decisions about whether we move species in order to save them or whether we do nothing and let them go extinct,” Dr Russell says. “But one of the things we need to start thinking about now is which species are most at risk from rising sea levels and the options for saving them.”

Climate change and the looming threat from rising sea levels will need to be a key consideration for future island restoration work and it may be that larger islands at less risk of submersion will have to become a higher priority for invasive species eradication, the study concludes. The paper appears in this month’s issue of the prestigious international journal Trends in Ecology & Evolution. DOI: http://dx.doi.org/10.1016/j.tree.2014.01.001

ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Power Outages, Roads Close: Easter Storm Moving Down Country

The NZ Transport Agency says storm conditions at the start of the Easter break are making driving hazardous in Auckland and Northland and it advises people extreme care is needed on the regions’ state highways and roads... More>>

ALSO:

Houses (& Tobacco) Lead Inflation: CPI Up 0.3% In March Quarter

The consumers price index (CPI) rose 0.3 percent in the March 2014 quarter, Statistics New Zealand said today. Higher tobacco and housing prices were partly countered by seasonally cheaper international air fares, vegetables, and package holidays. More>>

ALSO:

Notoriously Reliable Predictions: Budget To Show Rise In Full-Time Income To 2018: English

This year’s Budget will forecast wage increases through to 2018 amounting to a $10,500 a year increase in average full time earnings over six years to $62,200 a year, says Finance Minister Bill English in a speech urging voters not to “put all of this at risk” by changing the government. More>>

ALSO:

Prices Up, Volume Down: March NZ House Sales Drop 10% As Loan Curbs Bite

New Zealand house sales dropped 10 percent in March from a year earlier as the Reserve Bank’s restrictions on low-equity mortgages continue to weigh on sales of cheaper property. More>>

ALSO:

Scoop Business: Chorus To Appeal Copper Pricing Judgment

Chorus will appeal a High Court ruling upholding the Commerce Commission’s determination setting the regulated prices on the telecommunications network operator’s copper lines. More>>

ALSO:

Earlier:

Cars: Precautionary Recalls Announced For Toyota Vehicles

Toyota advises that a number of its New Zealand vehicles are affected by a series of precautionary global recalls. Toyota New Zealand General Manager Customer Services Spencer Morris stressed that the recalls are precautionary. More>>

ALSO:

'Gardening Club': Air Freight Cartel Nets Almost $12 Million In Penalties

The High Court in Auckland has today ordered Swiss company Kuehne + Nagel International AG to pay a penalty of $3.1 million plus costs for breaches of the Commerce Act. Kuehne + Nagel’s penalty brings the total penalties ordered in this case to $11.95 million ... More>>

ALSO:

Crown Accounts: Revenue Below Projections

Core Crown tax revenue has increased by $1.9 billion (or 5.0%) compared to the same time last year. However this was $1.1 billion less than expected and is reflected across most tax types, continuing the pattern of recent months. More>>

ALSO:

Get More From Scoop

 
 
Computer Power Plus
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news