Answer: Alder trees are in the birch family (Betulaceae) and the genus Alnus. Alders tend to grow in wet, slightly acidic soils especially along the edges of wetlands. The speckled alder grows in ...

The reason why so many tree species can coexist in species-rich forests has long been a subject of debate in ecology. This question is key to understanding the mechanisms governing the dynamics and ...

One person can’t measure all the trees in the world, but when many people come together, a global view becomes possible. A worldwide collaboration of scientists has produced the first ground-sourced ...