|Title||Influence of habitat vegetative condition on trap response of rodents associated with burrow mounds of Dipodomys spectabilis in a desert grassland|
|Publication Type||Journal Article|
|Year of Publication||1998|
|Date Published||June 1998|
|Keywords||burrow mounds, desert grassland, Dipodomys spectabilis, habitat vegetative condition, rodents, trap response|
A variety of factors are known to play a role in susceptibility of small mammals to being trapped (Smith et al., 1975). Among the factors tested are trap-type (closed box live trap, pitfall trap, wire box live trap, snap trap), moonlight, season, food availability, and bait (see O'Farrell et al.  and Woodman et al  for recent reviews). Although intuition suggests that habitat condition (e.g., food availability, cover) should influence small mammal trap response, few observations have been reported (Grinnell, 1932; Fitch, 1954; Smith and Blessing, 1969; O'Farrell and Uptain, 1987). Grinnell (1932) stated that giant kangaroo rats (Dipodomys ingens) ignored bait ed snap-traps when new growth of forbs and grasses was available. Fitch (1954) showed that captures of a variety of small and medium-sized mammals declined in apparent concert with seasonal food availability. Smith and Blessing (1969) presented results that showed that experimental food augmentation decreased captures of old-field rodents. O'Farrell and Uptain (1987) reported that Stephens' kangaroo rats (D. stephensi) were nearly impossible to live trap when vegetative cover and green vegetation were abundant.