vaughani, and several heteromyid taxa, including Dipodomys
gidleyi, Oregonomys cf.
The only species of rodent captured in the grassland grazing exclosure was Ord's kangaroo rat, Dipodomys
ordii (Table 4).
The study concentrated on a simple community of two species of kangaroo rats (Dipodomys
deserti and D.
Eight montane voles (Microtus montanus; 2 males, 6 females) were captured in May and three Ord's kangaroo rats (Dipodomys
ordii; 1 male, 2 females) were captured in August.
Increases were documented for Dipodomys
merriami (55%, P=0.014), Chaetodipus hispidus (196%, P=0.011), Perognathus flavus (526%, P=0.001), Peromyscus maniculatus (339%, P=0.001) and Reithrodontomys megalotis (230%, P=0.005) (Table 3).
We used standard laboratory methods to assess agonistic behavior of Merriam's kangaroo rats, Dipodomys
In a Sonoran Desert community of four granivorous species (Arizona pocket mouse, Perognathus amplus; Merriam's kangaroo rat, Dipodomys
merriami; round-tailed ground squirrel, Spermophilus tereticaudus; and Harris's antelope squirrel, Ammospermophilus harrisii), we concluded that two mechanisms were jointly responsible for community organization.
spectabilis (banner-tailed kangaroo rat) is a large kangaroo rat whose current distribution is limited to Upper and Lower Sonoran lifezones from northern New Mexico southward into Mexico.
Captures of Baiomys taylori (n=8), Onychomys leucogaster (n=6), Dipodomys
ordii (n=2) and Spermophilus spilosoma (n=1) were not sufficient for statistical analysis.
Schiffman (1994) found giant kangaroo rat (Dipodomys
ingens) activity increases the diversity of exotic grass species while decreasing the diversity of native species in a California grassland and the North American beaver (Castor canadensis) is notable for its extensive alteration of resources (Naiman, 1988).
This flea is associated with Ord's kangaroo rat (Dipodomys
ordii), although it also has been reported on P.
17 Jan-8 Feb 1993 25 Dec 1995 15 Jun 1996 Species (180 pellets) (84 pellets) (140 pellets) Cryptotis 16 (5.80) 10 (5.18 5 (1.45) parva Sylvilagus -- 1 (0.52) -- audubonii Cratogeomys 31 (11.23) -- -- castanops Geomys 4 (1.45) 2 (1.04) 6 (1.74) bursarius Chaetodipus -- 24 (12.44 41 (11.88) hispidus Dipodomys
-- -- -- ordii Baiomys -- 21 (10.88) -- taylori Neotoma 1 (0.36) -- -- micropus Onychomys 4 (1.45) -- 4 (1.16) leucogaster Peromyscus sp.