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.
Percentage changes in the population density of trees in different size classes near forest edges (plot center <100 m from the nearest edge) and in forest interiors (170–3,000 m from the edge) between the initial and final censuses of all plots.
