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.
Average effect sizes (±95% confidence intervals) of herbivory and fertilization and their interaction on producer species richness (a) and evenness (b) in freshwater (gray circles), marine (triangles), and terrestrial (black squares) systems. Numbers represent numbers of studies used for each average. Herb, Herbivory; Fert, Fertilization.
