Resurrecting extinct species might come at a terrible cost

https://phys.org/news/2017-02-resurrecting-extinct-species-terrible.html

February 27, 2017
Resurrecting extinct species might come at a terrible cost
A Lord Howe Island woodhen Gallirallus sylvestris. Credit: Toby Hudson

Bringing back extinct species could lead to biodiversity loss rather than gain, according to work featuring University of Queensland researchers.

UQ scientist Professor Hugh Possingham said the research suggested further stretching already-strained budgets to cover the costs of de-extinction could endanger extant species (species still in existence).

“If the risk of failure and the costs associated with establishing viable populations could also be calculated, estimates of potential net losses or missed opportunities would probably be considerably higher,” Professor Possingham said.

“De-extinction could be useful for inspiring new science and could be beneficial for conservation if we ensure it doesn’t reduce existing conservation resources.

“However, in general it is best if we focus on the many species that need our help now.”

“Given the considerable potential for missed opportunity, and risks inherent in assuming a resurrected species would fulfil its role as an ecosystem engineer or flagship species, it is unlikely that de-extinction could be justified on grounds of biodiversity conservation.”

The study was led by Dr Joseph Bennett, formerly of the ARC Centre for Environmental Decisions at UQ and now of Carleton University, Canada.

It analysed the number of species governments in New Zealand and New South Wales could afford to conserve.

“We based cost estimates on recently extinct species and similar extant species,” Dr Bennett said.

The Lord Howe pigeon, eastern bettong, bush moa and Waitomo frog were among the extinct species included in calculations.

The researchers found reintroducing some recently extinct species to their old habitats might improve biodiversity locally, but government-funded conservation for 11 focal in New Zealand would sacrifice conservation for nearly three times as many (31) extant species.

External funding for conservation of the five focal extinct NSW species could instead be used to conserve more than eight times as many (42) extant species.

Although the technology for de-extinction is still some way off, the research found that careful thought would be required about what to reintroduce, and where.

Professor Possingham is Chief Scientist with The Nature Conservancy, the world’s largest conservation organisation, and a scientist with UQ’s School of Biological Sciences, The Centre for Biodiversity and Conservation Science at UQ, the ARC Centre of Excellence for Environmental Decisions (CEED) and the Australian Government’s National Environmental Science Program Threatened Species Recovery Hub.

Read more at: https://phys.org/news/2017-02-resurrecting-extinct-species-terrible.html#jCp

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3 thoughts on “Resurrecting extinct species might come at a terrible cost

  1. I’d like to see us bring back the passenger pigeon, as (one of the) outstanding debts we owe to the planet. But I don’t want to see comments like one I read where people think it is easy to bring animals back once we’ve made them extinct ‘just bring them back again’, with no incentive to stop our activities. It’s been made kind of a pop culture thing in ‘the media’.

  2. I agree. I can understand the frustration over the loss and the desire to bring them back, but contrition is too late. That is why we need to act to save the ones we have before we are mourning them too.

  3. I wish we’d have a little ‘pre-contrition’ about our activities. I’d still love to see the passenger pigeon brought back, because that is one of, if not the most, dramatic example of the results of human behavior. But I realize modern humans have no use for remorse, guilt, shame or restraint.

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