A shift in New Zealand’s economic policy today restores our children’s future

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By Ian Herbert, Simon Hunt, Mahmoud Sarhan, and Matthew Caro
Publishing as members of the University of Otago, New Zealand BIOFIN Assessment Working Group

In just 50 years, the Living Planet Index, which monitors 35,000 global wildlife populations, has declined by 73%.[1] In Aotearoa New Zealand alone, more than 4,000 species are threatened or at risk of extinction.[2] A change in mindset is vital.

The UN is calling for urgent action, warning that biodiversity loss is accelerating due to an annual shortfall of approximately US$700 billion[3] in nature investment. Alarmingly, global spending on cosmetics and cosmetic surgery[4] exceeds investment in biodiversity. Yet adequate biodiversity financing is essential to achieving the targets set under the Convention on Biological Diversity (CBD) Global Biodiversity Framework (GBF) [5]. Collectively, 197 nations have signed the CBD, committing to leave our children a living planet [6].

  1. The University of Otago, New Zealand BIOFIN Assessment

The University of Otago's BIOFIN Assessment aims to evaluate how much is spent on biodiversity in New Zealand, how effectively those funds are used, and how financing can be improved across both the public and private sectors. The assessment focuses on delivering better biodiversity outcomes, generating revenues, avoiding future costs, and realigning budgets. Establishing a baseline for biodiversity expenditure through the BIOFIN methodology marks a pioneering step for New Zealand.

As a first step, the BIOFIN Assessment reviewed the country’s Policies and Institutional Review (PIR), which maps the landscape of biodiversity-related investment. The PIR helps us understand the drivers, pressures, state, impacts, and responses to national biodiversity loss. It also assesses biodiversity strategies, institutional delivery mechanisms, and provides evidence of the economic value of nature.

  1. Should New Zealand transition towards a nature-positive economy?

New Zealand has taken an intergenerational economics perspective in the PIR; what we leave behind to future generations. This is captured in the Aotearoa New Zealand BIOFIN Vision:

A strong nature-positive economy as an endowment to our children.

A nature-positive economy maintains and restores nature or ‘biodiversity condition’ by investing in our children’s future with nature. This is a response to the drivers of loss to maintain and restore the state of biodiversity in New Zealand. Without investment, nature declines. The Biodiversity Investment Ratio (BIR) is a ratio of biodiversity investment to GDP.[7]  New Zealand’s BIR is declining as we consume more and invest less.

A diagram of different types of nature

AI-generated content may be incorrect.

Biodiversity decreases year after year in a nature-negative economy. This impacts the quality of life for us and our children. Recent research in New Zealand shows that we could save our children and grandchildren $270 billion in cost burden and/or nature degradation over the next 50 years if we invest now.[8]

An important finding in the New Zealand PIR is that we account for economic growth, but we do not account for changes in biodiversity condition in the balance sheet. Single-entry accounting leads to imprudence (benefit now, pay later) and helps explain why New Zealand has a nature negative economy.[9]

  1. Is a BIOFIN Assessment important to managing national accounts?

Yes. Accountancy is based on double entry accounting – one entry on the profit and loss and one entry on the balance sheet. The New Zealand BIOFIN Assessment considers New Zealand’s biodiversity as a ‘natural capital asset’ in the balance sheet. If we invest in biodiversity, the natural capital asset can be maintained, just like other like physical assets.

The New Zealand BIOFIN Assessment can help fix this problem. The BIOFIN financial needs assessment (FNA) measures the level of investment needed to maintain and restore our ‘natural capital asset’ for a nature positive economy. The investment needed can be expressed as a target BIR.

A diagram of a company's natural capital/major city

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We trade off nature for more consumption, leading to fiscal imprudence and intergenerational inequity. We show the benefits of consumption as part of Gross National Product but fail to include the cost burden and nature decline on the balance sheet.

  1. Could an indicator for biodiversity condition help Treasury maintain fiscal prudence?

Yes. Biodiversity condition could be represented by a New Zealand living planet index. This could be estimated from the same point in time as the Global Living Planet Index (from 1970). It provides a way to measure if we are maintaining and restoring biodiversity and provide insights for transitioning towards a sustainable, nature-positive economy.

New Zealand living planet indicator is a guide for understanding the level of investment needed to maintain and restore biodiversity condition over time. The indicator can measure the (a) intactness (including reducing endangerment) and (b) extent (increasing underrepresented ecosystems) of our biodiversity.

Investing in biodiversity conservation is like assessing the danger at the top of a cliff and then building a fence to reduce the need to fund ambulances at the bottom. Understanding the level of biodiversity investment to maintain the fence at the top of the cliff is critical to transition to a nature-positive economy. If the condition of the fence goes unrecorded in natural capital accounts, it’s equivalent to a broken fence at the top of the cliff, not getting reported nor fixed.

Therefore, understanding biodiversity condition is an important economic policy change needed in New Zealand to improve fiscal prudence (benefit now, pay/invest now).[10]

  1. Why invest in nature conservation? 

Safeguarding our children’s future to enjoy the same potential wellbeing as we do is a great investment. It maintains and restores their life support systems. Alternatively, leaving them with public cost burden and declining nature is not fair, prudent, moral or ethical.

  1. What is causing the decline in Biodiversity in New Zealand?

The five direct pressures responsible for the decline of New Zealand species and ecosystems are: introduced invasive species, changes in land and sea use, direct exploitation and harvesting, pollution, and climate change. If we address direct drivers without addressing the root cause, the problem will remain. Using our analogy, we need to fix the fence the top of the cliff.

The Kunming-Montreal Global Biodiversity Framework (GBF) addresses consumption and production through Target 16, which aims to reduce the negative impacts of consumption and production on biodiversity.[11]

One method to frame consumption is ecological footprint. If consumption and population increase without efficiency transformations, biodiversity loss results. Year-on-year, consumption and population exceeded efficiency gains, leading to biodiversity loss.

A diagram of a earth with a water tap

AI-generated content may be incorrect.

Halting critical biodiversity loss by 2030 is Global Biodiversity Framework (GBF) Target 1. Biodiversity finance solutions are used to address Target 18 (reduction of harmful subsidies)[12] and Target 19 (increased investment in biodiversity)[13], as well as to support Targets 1 (halt biodiversity loss)[14] and 16 (sustainable consumption)[15].

Investing in nature as an output of the economy, while diverting finance from overconsumption, benefits GBF Targets 1, 16, and 18. This can be operationalised by a new solution called the Biodiversity Investment Contribution (BIC) that can do exactly that. It is an endowment to our children. It can be a systemic economic improvement, like pensions, investing in the future. As consumption increases, biodiversity investment increases. It is a balancing loop. Without this endowment, we could continue to overconsume. Are our children really ok with us taking this future away from them?

  1. Should nature investment be an output of the New Zealand economy?

Yes. Investing in biodiversity provides a threefold benefit. Firstly, it improves our achievement of global biodiversity targets with the positive flow on affects for New Zealand’s international leadership.

Secondly, achieving our targets improves New Zealand’s ‘clean green’ reputation, which provides significant support to important economic sectors such as tourism and agricultural exports.

Finally, biodiversity loss at the expense of our children’s endowment is a system problem leaving them with public cost burden and declining nature is not fair, prudent, moral or ethical. Without the fence at the top of the cliff, ambulances will be in high demand at the bottom.

  1. Can we do better? 

Yes. To secure a thriving future for both people and nature, New Zealand can make three simple step changes. Firstly, introduce the BIR as a baseline and a target to maintain and restore biodiversity. For the change to be effective, it must be informed by an indicator of biodiversity condition such as a New Zealand Living Planet Indicator.

Secondly, commitment to robust, sustained biodiversity investment as we consume. We can introduce new investments such as the BIC. As consumption increases, biodiversity investment increases. This provides future generations with the same opportunities with nature as we have.

Finally, acknowledging that kicking the can down the road when it comes to biodiversity investment only hurts our children.

 

[1] WWF, (2024) Living Planet Index.

[2] Te mana o te taiao (2020)

[3] United Nations. (2021) Between USD $700-800 Billion per annum.

[4] Ian Herbert, (2024), ratio of core biodiversity investment to cosmetics and cosmetics industry market worth.

[5] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf

[6] In this article, ‘children’ represents future generations in perpetuity.

[7] Ian Herbert, (2024), Ratio of Biodiversity investment using the BIOFIN method to Gross Domestic Product.

[8] World Wildlife Fund/Ernst & Young, (2024)

[9] https://seea.un.org/home/Natural-Capital-Accounting-Project

[10] https://seea.un.org/home/Natural-Capital-Accounting-Project

[11] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf/targets/16

[12] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf/targets/18

[13] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf/targets/19

[14] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf/targets/1

[15] Convention on Biological Diversity (cited July 2025) https://www.cbd.int/gbf/targets/16