Figure 1. Locations
for all middens collected for this project. Some
locations may have several associated middens. For
example, the insert shows all of the midden
collections for Death Valley. Midden ages ranged from
modern to +20,000 years old.
Figure 2. Body size for modern middens. The
size of the brown map points correspond to the relative size of the animals in
that collection. The green points represent older middens
of different ages.
Figure 3. Woodrat body size as a function of climate: temperature.
Minimum average winter temperature explains most of the variance seen in body
size.
Figure 4. Woodrat body size as a function of climate: precipitation.
There is a positive relationship between the amount of rain availability and
large body sizes.