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Multi-scale habitat selection of Mus minutoides in the Lowveld of Swaziland
Long, Andrea K.; Bailey, Karen; Greene, Daniel U.; Tye, Courtney; Parr, Courtnee; Lepage, Heather K.; Gielow, Kurt H.; Monadjem, Ara; McCleery, Robert A.
We investigated habitat selection of Mus minutoides in northeastern Swaziland. We used powder
tracking to determine how M. minutoides selected habitat at a fine scale and a broader path scale.
At the fine scale, we measured percent cover of grass and shrubs, the number of forbs, and visual
obstruction at five evenly-spaced points along a mouse’s pathway and at a paired random
location. At the path scale, we calculated the relative displacement (RD) of each path as the ratio
of the distance from the start to the end point of the path to the total length of the path (values
near one indicate less preference). We found that M. minutoides were positively associated with
increases in visual obstruction, grass cover, and shrub cover at the fine scale, but not at the path
scale. Our results indicate that M. minutoides selection of vegetative features at the path scale are
not as important as their fine scale selection of vegetative structure. Additionally, the shrub
encroachment on our study site may be directly beneficial to M. minutoides at the fine scale. Our
results provide us with an increased understanding of the basic ecology of M. minutoides and
information on their response to a changing landscape.