Step-by-step explanation:
Financial investments into conservation are often held back by a lack of certainty over the benefits of spending more. Anthony Waldron and colleagues assess the impact of conservation spending on biodiversity between 1996 and 2008 in 109 countries that signed up to the Convention on Biological Diversity. They find that conservation spending over this period reduced national-level biodiversity loss by 29%, on average. They also find that the funding needed to achieve specific conservation goals rises with socioeconomic pressures. The authors develop a predictive model of biodiversity decline, which takes into account the effects of human development pressures and conservation financing. They propose that this could help to predict the funding that each country needs to achieve specific biodiversity policy goals, including those laid out in the Convention on Biological Diversity and the broader United Nations Sustainable Development Goals.