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

Table 2

Mean (±1SE) recruitment estimates (new individual via birth or immigration/existing member/plot) by 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. 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+	0.24±0.14	0.03±0.01	0.10±0.07
	PB−	0.44±0.15	0.03±0.00	0.73±0.25
	P × SB+	0.27±0.19	0.03±0.00	0.06±0.23
	P × SB−	0.10±0.01	0.03±0.01	0.44±0.23
	S	0.20±0.14	0.03±0.01	0.79±0.77
		𝐹4,19=0.80, 𝑃=0.54	𝐹4,19=0.19, 𝑃=0.94	𝜒^2 = 4.14, df = 4, 𝑃=0.39
2010	PB+	0.22±0.16	0.02±0.00	0.05±0.01
	PB−	0.22±0.12	0.03±0.00	0.04±0.00
	P × SB+	0.07±0.02	0.03±0.00	0.04±0.01
	P × SB−	0.20±0.11	0.21±0.18	0.03±0.00
	S	0.06±0.01	0.24±0.19	0.05±0.01
		𝜒^2 = 3.64, df = 4, 𝑃=0.46	𝜒^2 = 5.73, df = 4, 𝑃=0.22	𝜒^2 = 3.96, df = 4, 𝑃=0.41