Implications of zero-deforestation palm oil for tropical grassy and dry forest 
biodiversity

Fleiss, Susannah; Parr, Catherine L.; Platts, Philip J.; McClean, Colin J.; Beyer, Robert M.; King, Henry; Lucey, Jennifer M.; Hill, Jane K.

doi:10.1038/s41559-022-01941-6

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Implications of zero-deforestation palm oil for tropical grassy and dry forest biodiversity

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Fleiss, Susannah
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Parr, Catherine L.
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Platts, Philip J.
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McClean, Colin J.
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Beyer, Robert M.
Potsdam Institute for Climate Impact Research;

King, Henry
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Lucey, Jennifer M.
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Hill, Jane K.
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Citation

Fleiss, S., Parr, C. L., Platts, P. J., McClean, C. J., Beyer, R. M., King, H., Lucey, J. M., Hill, J. K. (2023): Implications of zero-deforestation palm oil for tropical grassy and dry forest biodiversity. - Nature Ecology & Evolution, 7, 2, 250-263.
https://doi.org/10.1038/s41559-022-01941-6

Cite as: https://publications.pik-potsdam.de/pubman/item/item_27877

Abstract

Many companies have made zero-deforestation commitments (ZDCs) to reduce carbon emissions and biodiversity losses linked to tropical commodities. However, ZDCs conserve areas primarily based on tree cover and aboveground carbon, potentially leading to the unintended consequence that agricultural expansion could be encouraged in biomes outside tropical rainforest, which also support important biodiversity. We examine locations suitable for zero-deforestation expansion of commercial oil palm, which is increasingly expanding outside the tropical rainforest biome, by generating empirical models of global suitability for rainfed and irrigated oil palm. We find that tropical grassy and dry forest biomes contain >50% of the total area of land climatically suitable for rainfed oil palm expansion in compliance with ZDCs (following the High Carbon Stock Approach; in locations outside urban areas and cropland), and that irrigation could double the area suitable for expansion in these biomes. Within these biomes, ZDCs fail to protect areas of high vertebrate richness from oil palm expansion. To prevent unintended consequences of ZDCs and minimize the environmental impacts of oil palm expansion, policies and governance for sustainable development and conservation must expand focus from rainforests to all tropical biomes.