The effects of burning and mechanical thinning were investigated from 1999-2000 and 2002-2003 in the southern Sierra Nevada Mountains. This experiment was conducted through captures of Lodgepole chipmunks and the results indicated that over a short-term period, forest management techniques such as burning and mechanical thinning did not have a significant impact on the species in respect to capture rate or population number. However, the experiment did indicate that body mass of these chipmunks decreased because forest structure changed, limiting food availability provided by the cones of trees.