Coffee growers on Mount Kilimanjaro can greatly increase their crop yield by growing more trees.
Researchers found that healthy tree cover, like that found on the traditional farms of the Chagga people, can improve harvest yield by almost 10%.
Birds that nest in the trees act as pest control, while bees and insects help boost pollination, which results in higher quality coffee.
But plantations with only a few shade trees do not provide enough habitat for the animal species and are therefore much more likely to stagnate.
Read more at University Würzburg Biocenter, University of Ulm