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.
Return rate in voles in relation to the size of within-square population fluctuations. The size of population fluctuations within each square was assessed as maximum fold variation in population density [log10(Nmax/Nmin)]. Bars indicate standard errors.
