Climate change/biodiversity loss: Inseparable threats to humanity that must be addressed together

Demand for bioenergy to reduce CO2 emissions from fossil fuels could cause a 10- to 30-fold increase in green energy-related land use in years to come, adding crushing pressure on habitat for plants and animals and undermining the essential diversity of species on Earth.

Speaking to government ministers and other high level representatives at a major UN biodiversity meeting in Egypt, Anne Larigauderie, Executive Secretary of the Intergovernmental Platform on Biodiversity and Ecosystem Services, said climate scientists foresee far more land needed for corn and other crops for bioenergy to mitigate climate change in decades to come.

Citing the latest report from the Intergovernmental Platform on Climate Change (on limiting climate warming to 1.5C), Dr. Larigauderie noted that most IPCC scenarios foresee a major increase in land area for cultivating bioenergy crops by 2050 -- up to 724 million hectares in all, an area almost the size of Australia.

"The key issue here is: where would this huge amount of new land come from?" she asked. "Is there currently such a large amount of 'marginal land' available or would this compete with biodiversity? Some scientists argue that there is very little marginal land left."She said this important issue needs to be clarified, but the demand for land for energy will almost certainly increase, with negative consequences for biodiversity.