Ecological Archives M071-005-A14

Y. K. Lin and G. O. Batzli. 2001. The influence of habitat quality on dispersal, demography, and population dynamics of voles. Ecological Monographs 71:245-275.

 

Table A14. ANOVA tables with repeated measures for mean per capita net recruitment (births - deaths), mean per capita net movement (immigration - emigration), and mean per capita population growth (births - deaths + immigration - emigration) of meadow vole populations in manipulated habitat patches (Fig. 15). Experimental manipulations included mowing (cover) and supplemental feeding (food) in a 2 X 2 factorial design with 4 replicates. Elevation (2 replicates upslope and 2 downslope) used as a third factor, but not in tables if it had no significant effects. Estimates of mean demographic values repeated early (weeks 8-14) and late (weeks 16-22) in the season.

Net recruitment

Source d. f. Sum of squares F-ratio P
Food 1 0.030 1.62 0.227
Cover 1 0.010 0.517 0.486
F X C 1 0.0004 0.022 0.884
Subjects (groups) 12 0.219    
Season 1 0.122 10.9 0.006
F X S 1 0.0003 0.026 0.875
C X S 1 0.009 0.816 0.384
F X C X S 1 0.0002 0.016 0.900
Season X subjects (groups) 12 0.134    
Total 31 0.524    

Net movement

Source d. f. Sum of squares F-ratio P
Food 1 0.033 4.71 0.062
Cover 1 0.014 1.92 0.204
F X C 1 0.029 4.08 0.078
Elevation 1 0.020 2.81 0.132
F X E 1 0.020 2.75 0.136
C X E 1 0.045 6.36 0.036
F X C X E 1 0.001 0.134 0.724
Subjects (groups) 8 0.057    
Season 1 0.011 0.395 0.547
F X S 1 0.003 0.105 0.754
C X S 1 0.047 1.66 0.234
F X C X S 1 0.0003 0.010 0.925
E X S 1 0.049 1.70 0.229
F X E X S 1 0.003 0.101 0.758
C X E X S 1 0.114 3.99 0.081
F X C X E X S 1 0.002 0.063 0.808
Season X subjects (groups) 8 0.229    
Total 31 0.677    

Population growth

Source d. f. Sum of squares F-ratio P
Food 1 0.0001 0.004 0.954
Cover 1 0.046 1.32 0.273
F X C 1 0.023 0.650 0.436
Subjects (groups) 12 0.417    
Season 1 0.059 1.29 0.278
F X S 1 0.005 0.113 0.742
C X S 1 0.098 2.16 0.168
F X C X S 1 0.0009 0.020 0.890
Season X subjects (groups) 12 0.546    
Total 31 1.19    

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