Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Power-law describing the functional relationship between range size in km2 and total abundance of species, derived from the power-law relationships of tree species on Barro Colorado Island. The slope of the relationship is quite steep (1.4), indicating that range size increases much faster than linearly with increasing abundance.
