Over the years, The biodiversity-productivity relationship (BPR) has conducted many experiments and studies on biodiversity in forests.To gain more insights into BPR on a global scale, Jingjing Liang et al compiled data from 777,126 sample plots across 44 countries and 13 ecoregions. In total, more than 30 million trees across 8,737 species were tallied and measured. This study recently caught the attention of scientists and policy makers. On a global scale, a 10% decrease in tree species richness would cause a 2 to 3% decline in productivity, which is the rate of biomass production in an ecosystem. A 99% decrease in tree species richness, would result in productivity decline of 62 to 78%. While productivity trends consistently decrease with increased biodiversity loss across nearly all regions of the world, the areas that would experience the greatest productivity decline in absolute terms include the Amazon, West Africa's Gulf of Guinea, Southeastern Africa, Southern China, Myanmar, Nepal, and the Malay Archipelago.
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