=====================================================================
| Number | Per cent
| | of total
-------------------------------------------------+--------+----------
Perognathus fallax pallidus | 3 | 11.5
Dipodomys agilis fuscus | 9 | 34.6
Peromyscus truei montipinoris | 10 | 38.5
Neotoma fuscipes simplex | 4 | 15.4
-------------------------------------------------+--------+----------
Although Munz and Keck (1949:101) considered the pinyon-juniper belt as
one association, on the desert slope of the San Gabriels pinyons and
junipers do not generally grow on common ground; but rather the juniper
belt represents a well defined habitat occurring between the pinyon
covered slopes and the flats that support Joshua trees. Because the
mammalian populations of the pinyon belt and the juniper belt are
somewhat different, the mammals of these areas are most conveniently
taken up separately.
In the juniper belt the juniper tree is of marked ecologic significance;
the distribution of _Peromyscus truei_ and _Neotoma fuscipes_ is
determined here by the presence of junipers. At certain times of year
the fruit of this plant is eaten by coyotes, kangaroo rats, and wood
rats.
The list below indicates the results of approximately 500 trap nights in
the juniper belt near Mescal Canyon, between 4000 and 5000 feet
elevation.