Table 1: Results of the best-fit spatial multiple linear regressions relating small mammal captures to three macrohabitat types and 3 other small mammal species (pigmy mice (BATA), white-footed mice (PERO), fulvous harvest mice (REFU), and hispid cotton rats (SIHI)). We report AIC weight and % difference in AIC weights between the best-fit model (reported) and its most likely alternative model, and asterisks indicate significant explanatory variable in the best fitting model.

SpeciesSeason Variables in the best-fit modelAIC weight (% difference)R 2

PIGMY MOUSE
(Baiomys taylori)
fall 1991(−) brushland/forest*61% (39%)0.24
spring 1992(−) grassland drainage57% (34%)0.06
fall 1992(+) upland grassland*35% (14%)0.29
WHITE-FOOTED MOUSE
(Peromyscus leucopus)
fall 1991(+) brushland/forest*, (+) REFU*59% (37%)0.49
spring 1992(+) brushland/forest*, (+) REFU41% (16%)0.39
fall 1992(+) brushland/forest*59% (35%)0.14
FULVOUS HARVEST MOUSE
(Reithrodontomys fulvescens)
fall 1991(+) PERO*40% (67%)0.26
spring 1992(−) brushland/forest*, (+) PERO42% (14%)0.12
fall 1992(+) BATA60% (36%)0.03
HISPID COTTON RAT
(Sigmodon hispidus)
fall 1991(+) brushland/forest60% (36%)0.10
spring 1992(+) upland grassland36% (18%)0.03
fall 1992(+) upland grassland*, (−) BATA41% (11%)0.12