Figure 2.
Seasonal changes of percentage of cavitated vessel elements during the period from March, 1996, to April, 1997. Means for four twigs per one species are shown with 95% confidence intervals.
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.