IPBES report sees climate, nature and food challenges interlinked

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IPBES report sees climate, nature and food challenges interlinked

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Issues like climate chante, biodiversity and water are all interlinked, the report says

Climate change, nature loss and food insecurity are all inextricably linked and dealing with them as separate issues won’t work, a major report has warned.

The review of scientific evidence by the

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found governments are underestimating or ignoring the links between five key areas – biodiversity, water, food, health and climate change.

This “siloed” approach has unintended consequences, such as damaging biodiversity through tree-planting schemes, or polluting rivers while ramping up food production, the report said.

The latest assessment was approved by almost 150 countries meeting in Windhoek, Namibia.

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Understanding the value of nature is key to addressing the global biodiversity crisis, according to IPBES scientists

Understanding the interdependencies between the different areas is “critical” in addressing the crises affecting the natural world, said the report’s co-chair, Paula Harrison, professor of land and water modelling at the *** Centre for Ecology & Hydrology.

“Our current governance systems are often different departments, they’re working in silos, they’re very fragmented,” she said.

“Often these links are not even acknowledged or ignored and what that means is you can get unintended consequences or trade-offs that emerge because people just weren’t thinking in an holistic way.”

She said the report has identified more than 70 solutions to tackling the problems holistically, many of which are low cost.

Examples given in the report include the disease bilharzia, which causes long-term health issues for more than 200m people worldwide, especially in Africa.

Tackling the problem as a health issue through medication sees people get reinfected.

A different approach in rural Senegal tackled water pollution and the invasive plants that are habitat for the snails which host the parasitic worms which carry the disease, resulting in health and biodiversity gains.

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Overfishing can have huge implications for biodiversity

The report also found:

More than half of the world’s population – especially among developing countries – live in areas hit by the biggest impacts from declines in biodiversity, water and foodBiodiversity – the richness and variety of all life on Earth – is declining everywhere, largely as a result of human actions, with “direct and dire impacts” on food security and nutrition, water, health and wellbeing, and resilience to climate changeDelaying the action needed to meet policy goals will also increase the costs of delivering them. For example, delayed action on biodiversity goals could as much as double the eventual costs – while increasing the probability of species extinctions.

The report also looked at future challenges and scenarios, focussing on the periods up to 2050 and 2100.

It found that under current “business as usual” trends, the outcomes will be extremely poor for biodiversity, water quality and human health.

Dealing with only one area in isolation will probably lead to negative outcomes in other areas. Focusing only on climate change, for example, can lead to negative outcomes for areas such as biodiversity and food, reflecting competition for land.

“Future scenarios do exist that have positive outcomes for people and nature by providing co-benefits across the nexus elements,” said Prof Harrison.

“The future scenarios with the widest nexus benefits are those with actions that focus on sustainable production and consumption in combination with conserving and restoring ecosystems, reducing pollution, and mitigating and adapting to climate change,” she said.

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