Large Scots pines at study site (May 15, 1997). The birch are just leafing out due to a colder than usual spring. A Norway spruce is in front of a pine just left of center.
Images © 1996 by John A. Byers,
Chemical Ecology
.
Large Scots pines at study site (May 15, 1997). The birch are just leafing out due to a
colder than usual spring. A Norway spruce is in front of a pine just left of center.