OCTOBER 1989 - City of Boulder

faunal elements are represented by two species, and the remainder
are all represented by just one species.
No speci es were 1 i ve-trapped at the Plains Wet1 and Habitat type,
or in the hay meadow on the same property at Boulder Valley
Ranch, The absence of animals poses an interesting question. The
general area uas subject to bubonic plague several years ago and
many of the prairie dog communities were severely affected. How
this might have inf luenced the small mammal populations is not
known. In addition, the meadow and the wet1 and are exposed to
fluctuating water tables due to f load irrigation techniques used
on the property. Such practices may or may not influence the
distributions of mammals, and is an interesting subject for
further study.
Transects at the tall grass habitat site were placed in three
different areas of the prescription burn at T63, ungrazed/
unburned, ungrazed/burned, and grazed\ unburned. This information
could be used with information about percent ground cover and
seed bank comparisons current1 y being col 1 ected by the University
of Calorado {Dr. Jane Bock). With further work it may be possible
to determine effects of the burn on mammalian habitat diversity
and speci es densi ty,
A list of amphibian and reptile species occurring in Boulder
County is included as Appendix C . An observed species is denoted
with an asterisk, and location of observation are recorded. No