Researchers might have finally provided a solution to the ecological riddle of why tree abundance on Africa's grassy savannas diminishes in response to heavy rainfall despite scientists' expectations to the contrary. The researchers found that the ability of grasses to more efficiently absorb and process water gives them an advantage over trees. This raises concerns that the heavy tropical rains that could accompany climate change may lead to fewer trees on savannas.

Source: More rain leads to fewer trees in the African savanna