[R-sig-eco] testing for synchrony

[Stratford, Jeffrey]

Hi everyone,

I've been asked a few times about how to test for synchrony of
ecological events.  In one case, a researcher has more than a decade of
acorn mast data for several species of oaks and wants to know if
different oaks have synchronous mast years when sympatric.  The other
case, a researcher wants to know if frog calling intensity is
synchronous across a number of ponds. I thought I would first take a
stab at looking at synchrony broadly then I would dig deeper and look at
synchrony and spatial effects.

Any suggestions how to get started?  

Many thanks,

Jeff
*****************************************
Jeffrey A. Stratford, Ph.D.
Department of Health and Biological Sciences
84 W. South St.
Wilkes Univertsity, PA 18766
570-332-2942
http://web.wilkes.edu/jeffrey.stratford/