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Thứ Ba, ngày 16/04/2024

Preventing global biodiversity loss: Radical solutions and new targets


    Biodiversity is declining at such a rate that we are undeniably on a path to a sixth mass extinction event. Halting biodiversity loss is a burning issue. We have so far failed to meet any of the biodiversity targets set for 2000 to 2010 and 2010 to 2020 (the Aichi targets), and most of the nature-related Sustainable Development Goals are also on track for failure. The so-called post-2020 Global Biodiversity Framework will set out new objectives to be met by 2030, which will likely include reducing threats to biodiversity and ensuring its sustainable use.

    Between 1970 and 2016, average species numbers declined by 68% and by as much as 94% in Latin America and the Caribbean. The major threats to biodiversity include changes in land and sea use (habitat loss), overexploitation, for example, fishing and by-catch, invasive species and disease, pollution and climate change. The loss of biodiversity has serious implications for humans, negatively impacting human health, livelihoods, income, migration and political conflict. Declining biodiversity and habitat are also causing humans and wildlife to come into closer contact, increasing the likelihood that diseases carried by animals will transfer to humans.

   New and radical solutions to protecting biodiversity and preventing loss, such as economic instruments like biocredits, legal arrangements, vastly increased funding and protected areas, as well as systemic change targeting power imbalances and economic models, are being discussed in academia, policy and industry ahead of target setting.

    One of these solutions to prevent biodiversity loss is to increase the extent of global area under protection. Currently, only 15.1% of land area worldwide is protected. If this was expanded to 50%, avoiding areas with high human density, we could reduce biodiversity loss, prevent CO2 emissions from land conversion and enhance natural carbon removal. A spatial meta-analysis found a 43% increase in costeffective protected area coverage was achievable, although ambitious and efforts could be hampered by a lack of international collaboration and rapid land degradation. Interestingly, strengthening the rights to land and resources for indigenous communities could, in theory, help achieve biodiversity objectives on one third of the suggested protected area. Alongside affording biodiversity greater space, funding for biodiversity protection needs to increase. Some have estimated between US$ 300 to US$ 400 billion is needed every year, while the Convention on Biological Diversity estimates the Global Biodiversity Framework will cost between US$ 103 billion and US$ 895 billion annually, which needs to be directed to countries with the highest biodiversity levels (UN CBD Report, 2020). At present only US$ 52 billion is made available each year.

Satellite measurements show that rainforest deforestation spiked to an 11-year high in the Brazilian Amazon

    Biodiversity credits (Biocredits), tradable units of measurement for conservation actions and outcomes, have also been suggested as a novel approach to conservation. If designed well, they would help align our actions with out comes for biodiversity as well as make financial investment in conservation more attractive and increase transparency in monitoring biodiversity targets. There are many challenges to their design, however, such as ensuring they are inclusive and support equitable distribution of the benefits, which can mean different things for example, redressing the past imbalance of the global South having their resources exploited by the North. Several systems have already been trialled in several places such as wildlife credits, payments for ecosystem services and carbon offsets, with varying results. The first wildlife bond, intended to increase black rhino populations, will launch this year.

    Agriculture threatens 86% of at-risk species worldwide and is the principal driver of accelerating biodiversity loss. There is overwhelming agreement that to reduce agriculture’s impact we need to shift dietary patterns to predominantly plant based diets, protect and set aside land for nature both on and off farms and shift to more sustainable farming methods. The good news is that if we employ sustainable farming methods to increase crop yields immediately and on a vast scale we can reverse terrestrial biodiversity loss while also meeting food needs for the global population. Sustainable intensification of farming (essentially the use of less resources and land to produce the same or greater amounts of production), reducing trade barriers in agricultural goods, reducing agricultural waste by 50%, and cutting the share of animal calories in human diets by 50% could theoretically avoid two-thirds of projected biodiversity losses. Additionally, landscape-level conservation and agricultural planning must become common practice to tie these two sectors together in policy. One possible solution to past failures to achieve biodiversity targets is to make the new targets legally binding like the Paris Agreement on climate change. This would take longer to negotiate - the Paris Agreement took around four years- and the goals would likely be less ambitious should all parties be held to account, but it is expected that this would secure greater compliance. A Global Deal for Nature has been proposed as a plan to be paired with the Paris Agreement, which calls for 30% of land to be protected for biodiversity and 20% designated for climate stabilisation. The introduction of legal obligations is thought to be highly unlikely, however, as the CBD is founded on the idea that countries have a sovereign right over the use of biodiversity.

   The scale at which we are attempting to prevent biodiversity loss does not match the scale at which the drivers operate nor the severity of the problem. We need more than individual action - we need systemic change to abandon goals of continual economic growth and properly price environmental externalities, stop using fossil fuels, strictly regulate markets including property, and reduce or regulate corporate lobbying, all of which contribute to wider sustainability issues. Our current economic and social systems promote consumption and population growth as well as globalisation, which makes it difficult to see the impact of our individual decisions as the distance between the point of production and consumption increases. The way in which we approach global problems is also flawed as we fail to collaborate and share information between different disciplines and fail to understand the complex adaptive systems these problems arise within.

   To achieve the type of systemic change needed, we must appreciate the widespread impacts of biodiversity loss. This in turn will spur Governments to be more committed to reaching biodiversity targets. Communicating the scale of the threat is challenging, however, partly because the loss of habitat and biodiversity has a delayed reaction in terms of impact on societal and economic welfare, and partly because of optimism bias - we generally underestimate the severity of threats and ignore expert warnings. As such it is difficult to convince those in power of the importance of biodiversity and the devastation to humans the loss of species richness will cause.

    There are a multitude of solutions to the biodiversity loss crisis we are facing, including strategies that also tackle inequality, climate change and food insecurity, and as such, there is cause for optimism. The question remains, however, whether new targets will utilise these approaches and prevent a significant loss of species. The failure to reach past goals has been linked to poor investment and accountability and poor translation of the goals to national levels. The new goals and solutions must address the real drivers of habitat and biodiversity loss as well as be easily scaled to country, regional and local levels to ensure progress is made. If we do not step up and act now to avoid the disastrous consequences of biodiversity loss, then environmental, economic and social disaster will force us to. The good news is that we know how to save biodiversity and ourselves.

Hồng Nhung

(Source: Vietnam Environment Administration Magazine, English Edition II - 2021)

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