Figure 4.
Mean annual tree mortality (mean ± 95% Conf) and forest insect disturbance (mean ± 1 SE) for different tree species (BF, Balsam fir; BS, Black spruce; TA, Trembling aspen; JP, Jack pine; OT, Others).
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.