Fig. 3.

Survival of the four most abundant rodent species during the period immediately before and after the flood compared with survival before the flood. Survival is measured as the percentage of marked individuals that survived from one 6-month period to each of three subsequent 6-month periods, as indicated by recapture. Preflood survival is calculated over the course of the entire study (filled circles) and is compared with survival from the 6-month period before the August 1999 flood event to the following periods (open circles). The survivorship of the kangaroo rats (Dipodomys spp.) decreased markedly as a result of the flood, whereas that of the pocket mice (Chaetodipus spp.) remained at or above preflood levels.