Fig. 4From: Big data of tree species distributions: how big and how good?Geographical coverage of tree occurrence data. Shaded grey areas show areas of general sampling in the databases integrated. Numbers in map represent insets where regional occurrence data (black dots) is shown: (1) South and Southeast Asia, (2) Northeast Europe, (3) Central Africa, (4) South-Southwest Australia and (5) Pacific coast of South America and AmazonBack to article page