Factors affecting the densities and diversities of semi-arid rodent communities have been topics of research for decades. This study, on the Santa Teresita Ranch in central Jim Hogg County, Texas, was conducted to determine if soils have a significant effect on the composition of South Texas rodent communities on the relatively fine scale of contiguous soil types. Soil sampling was conducted at sites across three soil types. Significant differences were observed in the mean percent mud (silt and clay) contents of samples across these soils. Live trapping was conducted from October 2011 to October 2012 with a trap success rate of 23% during the 1901 trap/nights. Proportions of species were significantly different across soil types, due in part to significant differences in proportions of the Gulf Coast kangaroo rat (Dipodomys compactus) across soils.
July 27, 2016
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