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.
The diameter of each circle and the correspondent figure inside represent the number of respondents’ perception of each ecosystem service/additional function. Significance level: *p < 0.05, **p < 0.005, and ***p < 0.0005.
