Effect of Removal of Woody Biomass after Clearcutting and Intercropping Switchgrass (Panicum virgatum) with Loblolly Pine (Pinus taeda) on Rodent Diversity and Populations

Table 3

Mean (±1SE) survival estimates for intertrapping period intervals by treatment (averaged across time and plots within treatment; calculated in Program MARK). Rodents were captured and released on site at the Lenoir 1 Sustainability Study Site, in Lenoir Co., NC, during 15 July–9 December, 2009 and 19 July–14 November, 2010. Statistical results are from comparisons using a 1-way ANOVA or Kruskal-Wallis test when parametric assumptions were not met. Kruskal-Wallis test statistics are reported as 𝜒² estimates. Within a year-species pairing, means with different letters are significantly different from one another (Tukey’s post hoc tests). Treatments: PB+ = Pine Biomass+; PB− = Pine Biomass−; P × SB+ = Pine × Switchgrass Biomass+; P × SB− = Pine × Switchgrass Biomass−; S = Switchgrass.

Year	Treatment	M. musculus	P. leucopus	S. hispidus
2009	PB+	0.46±0.03	0.93±0.04	0.57±0.06
	PB−	0.51±0.04	0.92±0.04	0.39±0.03
	P × SB+	0.56±0.05	0.92±0.04	0.53±0.06
	P × SB−	0.57±0.05	0.93±0.03	0.53±0.05
	S	0.66±0.05	0.87±0.05	0.60±0.06
		𝐹4,15=0.85, 𝑃=0.51	𝐹4,15=0.14, 𝑃=0.97	𝐹4,12=1.29, 𝑃=0.33
2010	PB+	0.49±0.07	0.98 ± 0.00^a	0.93±0.04
	PB−	0.50±0.06	0.99 ± 0.00^a	0.95±0.03
	P × SB+	0.67±0.07	0.93 ± 0.04^a	0.96±0.03
	P × SB−	0.59±0.07	0.75 ± 0.07^ab	0.99±0.00
	S	0.81±0.06	0.56 ± 0.06^b	0.97±0.01
		𝐹4,14=1.02, 𝑃=0.43	𝐹4,15=5.30, 𝑃=0.007	𝐹4,15=1.28, 𝑃=0.32