Posts Tagged ‘Dr Jan Wright’

DOC critic says loss of science quality in NZ is having dire consequences

The scientific justifications for the use of 1080 poison have been challenged in an article posted online (HERE) by Dr Jo Pollard, whose CV includes 18 years conducting research on animal management with AgResearch.

Back in the 1990s, she recalls, any hint of a prejudicial bias seriously undermined a scientist’s credibility but nowadays (she says) it seemed a scientist’s selling ability mattered most.

She contends:

“Gaining funding and successfully delivering results that generate more funding is vital to career development. And since the NZ government controls the money (grants to universities, NGOs and its own departments) the government gets and selects what it wants.”

The Government wants and since the 1960s has been getting widespread aerial poisoning with 1080, Dr Pollard says.

“The government has argued it needs to kill introduced mammals claimed to spread bovine tuberculosis (Tb) and threaten native wildlife, and widespread poisoning is the best way.

“Respected scientists are expected to sit tight while the media, government departments and high ranking officials misuse data to suit pre-ordained agendas.”

One example cited by Dr Pollard is the claim by the Parliamentary Commissioner for the Environment, Dr Jan Wright, that 1080 poison is “moderately humane”.

But her focus is on the kea, which she claims is a victim of “New Zealand’s degraded science culture” which

“…has spawned the rise of some disease-busting and biodiversity-conserving specialists whose claims go unchallenged, have a very strong following and who are supporting ever-increasing poisoning campaigns”.

Dr Pollard challenges claims that 1080 is needed to kill stoats.

She refers readers to http://1080science.co.nz/scientific-reviews-of-1080/

The use of 1080 by DOC was the subject of Dr Pollard’s criticism in 2011 HERE and HERE

The DOC response (HERE) was written by Paul Livingstone, manager of TB eradication and research at the Animal Health Board, and Mike Slater, Conservator for DOC on the West Coast.

They said:

Although birds, invertebrates and other animals are certainly not immune to the poison, the risks are greatly mitigated by the lethal doses they need to consume. There is no evidence that the toxin has a cumulative effect, or persists in the food chain. In fact, one of the most remarkable properties of the toxin is how quickly a sub-lethal dose is metabolised and expelled from the body. The risks to non-target species are further alleviated by the extremely strict regulations around how the toxin is used. For example, decades of extensive research and operational experience have enabled us to improve the efficiency and minimise the risks of aerial 1080 operations through:

• A reduction in the average quantity of poison bait used per hectare from 30kg/ha in the 1970s to just 2kg/ha today
• Research into more efficient dispersal methods, such as cluster sowing, that may further reduce the quantity of bait used by up to 75 per cent
• The use of GPS technology to make the deployment of baits accurate to within a couple of metres
• The routine use of cinnamon lure to attract possums and repel birds
• The routine use of carefully-screened cereal baits

The response also noted the Environmental Risk Management Authority, in a reassessment of 1080, had concluded the benefits of using 1080 to control introduced species that are destroying our endemic wildlife and spreading bovine TB outweigh the adverse effects.

Dr Pollard is qualified at Honours level in ecology (Limnology, Ecology and Applied Ecology) and animal behaviour and has particular interests in animal welfare, NZ’s ecology, and scientific integrity.

Another rejoinder from DOC seems inevitable.

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Experts comment on Parliamentary Commissioner’s report on agricultural emissions

The Science Media Centre has gathered expert reaction on the latest report from the Parliamentary Commissioner for the Environment, Dr Jan Wright, on the issue of agricultural greenhouse gases, methane and nitrous oxide, which form about half of New Zealand’s greenhouse gas emissions.

The debate around agricultural emissions and the emissions trading scheme has been polarised for too long, the commissioner says.

“But the ETS is not the only way forward – there are other things that can be done.”

Dr Wright says reducing biological emissions will not be easy, but a common understanding of the science is a good place to start.

Immediate opportunities for reducing New Zealand’s emissions lie in new native and plantation forests, and urges real progress in this area.

“It might not be the whole solution, but a million hectares of trees would make a big difference – not to mention the added benefits for erosion and water quality.”

The Government has recently set up working groups to look at these issues. Dr Wright says this is encouraging but she warns that change is now inevitable.

“Our farmers have shown time and again their ability to adapt to new challenges,” she said. “The world will continue to need food. But in the long term the way in which food is grown, and the types of food grown, will have to change if biological emissions are to be reduced.”

The Commissioner’s report Climate change and agriculture: Understanding the biological greenhouse gases is available here. A set of frequently asked questions can be found here.

The Science Media Centre’s roundup of reactions can be found here. 

Professor Louis Schipper, University of Waikato, comments:

“As usual for PCE reports, the problem and the science are eloquently described and the text remains rigorous and accessible. This report clearly lays out the case that New Zealand’s rather unique greenhouse gas emissions require bespoke solutions. The report argues that even if we reduced much of CO2 emissions from fossil fuels, we still would have relatively high emissions due to nitrous oxide and methane primarily derived from agriculture. To deliver solutions to this problem we need tailored research on New Zealand farms with New Zealand farmers.

“The overview of the production of methane and nitrous oxide demonstrates that the emissions of both these gases are inefficiencies of the soil and animal systems and so reduction has the potential to capture these valuable resources. Over the last few decades, we have improved our farming practices and this lowered the amount of greenhouse gas produced for every kg of milk or meat. And yet we still need to decrease our total greenhouse gas emissions.

“Before describing some New Zealand examples of mitigation strategies being developed, the report describes the critical characteristics of what might be considered successful mitigation strategies. These characteristics include the need to be practical, cost effective and nationally-applicable while avoiding risks – either perceived or real. It is recognised that finding a silver bullet mitigation strategies and continuous incremental gains are equally important.

“This report does a nice job highlighting some specific New Zealand studies at different stages of development that are making good progress on finding solutions. These case studies are also a realistic assessment of success and failure. Use of case studies draws people in with practical solutions rather than dense scientific explanations. This approach allows the discussion to move beyond ‘it’s all too hard, so why bother’ to considering interesting leads. Some of these case studies nicely describe the tradeoffs that need to be considered where a management practice may lead to reduction in say, methane but lead to an increase in nitrous oxide emissions. Scientists will need to continue to look to resolve these frustrating trade-offs. The case studies clearly demonstrate that we will be faced with many good ideas that fail but we only need a few successes to make real progress.

“Table 9.1 is fascinating: an estimate of the number of hectare of native forest to offset emissions from animals. I had wondered about this but never done the calculations. Must remember this is newly planted native forest and not existing native forest. The key here is that this planting could buy us time to get other strategies in place.”Absent perhaps is a greater discussion of the role of soils in storing carbon and removing carbon dioxide from the atmosphere, briefly touched on in section 9.4 (less than a page). Ultimately, we must remove a large amount of carbon dioxide already in the atmosphere and still increasing, even if we stop methane and nitrous oxide emissions. As the PCE states: “it is not possible to stop temperatures from continuing to rise with stopping net carbon dioxide emissions”. [section 3.4] “Net” means either reducing losses of carbon or getting some gains. Conversion of this carbon dioxide to soil organic matter is one way and a focus globally in the international “4 per mille initiative”. The research is in its early days in New Zealand and very challenging work.”

Note: Professor Schipper leads a team investigating the potential for soil organic carbon to capture atmospheric CO2 as a means to reduce overall greenhouse gas emissions.

Dr Suzi Kerr, senior fellow, Motu Economic and Public Policy Research, comments:

“It is excellent to have a clear careful presentation of the different aspects of the science in this complex area which is one of the things that the PCE does so well. I agree with all the actions she suggests.

“For the sake of farmers and rural communities as well as for the climate, we need to start making a gradual transition now toward new land uses – including new types of food. On land where sheep and cows continue to be grazed, we need to move toward low emission practices including new technologies as they become available. Our long term goal on that land is to produce ultra low emission dairy and red meat.

“Many farmers are aware of these issues and deeply concerned about the resilience of their sectors. Including biological emissions in the ETS, even if it only slightly increased the cost of dairy and red meat production, would send a signal to the wider farming community and those who support them in education, research and industry that it is time to move their attention, energy and creativity toward transition.

“Inclusion in the ETS could be done with a focus on helping the rural community make a gradual transition, not with expectations that the relatively small group of farmers would bear a significant part of the cost of New Zealand’s Paris commitment. In the short term, trees – including natives – are the main way that the rural sector can help achieve our Paris goals but we can’t wait to start action on the longer game of reducing nitrous oxide and methane.”
Note: Motu Economic and Public Policy Research prepared two reports that informed the PCE’s report.

The New Zealand Agricultural Greenhouse Gas Research Centre (NZAGRC) provided a media release in response to the PCE’s report:

The Parliamentary Commissioner for the Environment’s report into greenhouse gas emissions from agriculture highlights the need for a suite of mitigation solutions rather than a single silver bullet.

In welcoming this report, Harry Clark, NZAGRC Director says, “The report provides a comprehensive overview of the unique challenges New Zealand faces when it comes to agricultural greenhouse gases. It emphasises that, for effective mitigation, New Zealand needs to have a suite of mitigation options available that match our diverse farming systems rather than hope for a single, one size fits all ‘silver bullet’ solution.”

The report released by the Parliamentary Commissioner for the Environment (PCE) today outlines New Zealand’s unique situation and provides an overview of the technologies and practices that could help reduce greenhouse gases from New Zealand’s pastoral sector. The report covers breeding low methane-producing animals, identifying low methane feeds, manipulating rumen microbial communities to reduce methane emissions, pathways for reducing nitrous oxide, and the use of trees to offset emissions.

The government funded NZAGRC, in partnership with industry, is coordinating and investing in research to allow these options to be developed, tested and adopted by New Zealand farmers.

Harry Clark says, “New Zealand’s agricultural emissions make up almost half of New Zealand’s total greenhouse gas emissions. The more options we have to reduce agricultural greenhouse gases, the easier it will become for New Zealand to achieve its 2030 emission target signalled under the Paris Agreement of a 30% reduction in emissions compared with 2005.”

The PCE report not only presents technical options but emphasises that any solution needs to be scrutinised for the actual reduction it can achieve on farm (and whether it reduces absolute emissions or, primarily, emissions per unit of product), its positive or negative side-effects, cost-effectiveness, ability to be integrated into existing systems, and whether it makes sense from a national perspective.

Harry Clark says “Research and technical development is only the first step in a solution. The report by the Parliamentary Commissioner for the Environment provides a highly accessible summary of potential solutions. More importantly though, it concludes by considering the next steps: how we can collectively ensure that our science can be adopted to the benefit of the country and the climate? The Paris agreement sets a new framework for addressing climate change issues and this report makes a valuable contribution to the debate New Zealand must have round the role of agriculture in meeting national emissions reduction commitments agreed under this framework.”

Note: Dr Clark was involved in the review process of the PCE’s report.

Environment Commissioner warns water quality is “not out of the woods yet”

Parliamentary Commissioner for the Environment, Dr Jan Wright, has released two reports on water quality, calling for further steps to safeguard the quality of New Zealand’s fresh water.

She gives credit to the Government for investing heavily in developing policy to improve the management of fresh water, describing the 2014 National Policy Statement as “a major step forward”.

Some regional councils had begun to act and there was “a real sense of momentum.”

 “But we are not out of the woods yet. Some lakes and streams are below bottom lines and many others are not far above them. And in many places, water quality continues to decline.”

Dr Wright said ongoing conversions of land to dairy farming was resulting in increases in nutrient pollution of waterways.

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