Thursday, 09 February 2023 13:55

NZ could feed itself for a nuclear winter

Written by  Staff Reporters
Professor Nick Wilson Professor Nick Wilson

A new study has revealed that New Zealand is one of only a few island nations that could continue to produce enough food to feed its population in a nuclear winter.

The new study, from Professor Nick Wilson of the University of Otago, and independent researcher Dr Matt Boyd, from Adapt Research, claims a total of five island nations, including New Zealand, could be well placed to continue producing food despite the reduced sunlight and cooler temperatures caused by soot in the atmosphere following a nuclear war in the Northern Hemisphere.

The other four nations were Australia, Iceland, Vanuatu, and the Solomon Islands.

Wilson says that while New Zealand was likely to continue to be able to produce enough food, its production and distribution was still threatened by the country’s dependence on imported commodities, such as refined fuel.

The researchers investigated the impact of abrupt sunlight reducing scenarios - including nuclear war, super volcano eruptions, and asteroid impacts – on agricultural production globally.

They applied published crop models under ‘nuclear winter’ conditions to 38 island nations, combining this with other methods to estimate the food calorie supply. They also assessed a range of resilience factors that might protect countries from the impacts of a nuclear winter.

Boyd says although some other nations would likely be able to produce enough food, but other factors, like the collapse of industry and social functioning, placed their resilience in doubt.

Wilson says the findings are consistent with a 1980s study on the impact of nuclear war on New Zealand, although the country’s resilience has declined since then as its dependence on imported diesel and digital infrastructure has increased.

“Islands such as New Zealand are often very dependent on imports of refined liquid fuel, may lack energy self-sufficiency and are susceptible to breakdowns and shortages of critical commodities,” Wilson says.

“While New Zealand could divert a high proportion of its dairy exports to supply the local market, it lacks the ability to manufacture many replacement parts for farm and food processing machinery,” he adds.

Dr Matt Boyd FBTW

Dr Matt Boyd

Meanwhile, Boyd says the findings reinforce the precarious position many countries would find themselves in during a global catastrophe.

“New Zealand has the potential to preserve an industrial society through this kind of catastrophe, but it is not ‘plug-and-play’,” he says. “A decent amount of strategic planning needs to happen and across a long period of time, but this planning would have benefits in dealing with a wide range of extreme risks.”

Boyd says the findings show a need to analyse nuclear winter and other abrupt sunlight reducing scenarios as part of a comprehensive national risk assessment.

“We are not aware of any plan for this kind of global catastrophe, including whether priorities for rationing have been considered.

“With the Government expected to release New Zealand’s first National Security Strategy this year it is important that the catastrophic risks associated with abrupt sunlight reducing scenarios do not slip through the cracks.”

More like this

Bird flu 'unlikely to have trade impact'

A marketing expert says it’s unlikely that the recent outbreak of avian influenza on an Otago poultry farm will have a significant impact on New Zealand’s trade relationships.

Wool-derived protein eyes $2b market

Keratin extracted from New Zealand wool could soon find its way into products used to minimise osteoporosis, promote gut health, and other anti-inflammatories, says Keraplast chief executive Howard Moore.

Substitute for cow's milk?

OPINION: Scientists claim to have found a new way to make a substitute for cow's milk that could have a radical effect on the dairy industry.

Featured

NZEI unhappy with funding cut for teachers

Education union NZEI Te Riu Roa says that while educators will support the Government’s investment in learning support, they’re likely to be disappointed that it has been paid for by defunding expert teachers.

EU regulations unfairly threaten $200m exports

A European Union regulation ensuring that the products its citizens consume do not contribute to deforestation or forest degradation worldwide threatens $200m of New Zealand beef and leather exports.

Bionic Plus back on vet clinic shelves

A long-acting, controlled- release capsule designed to protect ewes from internal parasites during the lambing period is back on the market following a comprehensive reassessment.

National

Machinery & Products

New Holland combines crack 50 years

New Holland is celebrating the 50th anniversary of the introduction its Twin Rotor threshing and separation technology, which has evolved…

Iconic TPW Woolpress turns 50!

The company behind the iconic TPW Woolpress, which fundamentally changed the way wool is baled in Australia and New Zealand,…

» Latest Print Issues Online

The Hound

Double standards

OPINION: Imagine if the Hound had called the Minister of Finance the 'c-word' and accused her of "girl math".

Debt monster

OPINION: It's good news that Finance Minister Nicola Willis has slashed $1.1 billion from new spending, citing "a seismic global…

» Connect with Rural News

» eNewsletter

Subscribe to our weekly newsletter