Ecological Archives M071-005-A16

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 A16. ANOVA tables for fitness correlates (body mass of juvenile recruits, body growth of juveniles, and young recruited per adult female with repeated measures and young survived to adult size without repeated measures) of prairie vole populations in manipulated habitat patches (Fig.17). 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 because it had no significant effects. Estimates of mean demographic values repeated early (weeks 8-14) and late (weeks 16-22) in the season for three fitness correlates.

Body mass of juvenile recruits

Source d. f. Sum of squares F-ratio P value
Food 1 436 1.97 0.175
Cover 1 0.067 0.0003 0.986
F X C 1 19.8 0.090 0.768
Season 1 265 1.20 0.286
F X S 1 27.5 0.124 0.728
C X S 1 29.1 0.132 0.720
F X C X S 1 6.27 0.028 0.868
Error 21 4639    
Total 28 5422    

Body growth of young

Source d. f. Sum of squares F-ratio P
Food 1 158 1.37 0.255
Cover 1 134 1.16 0.294
F X C 1 12.2 0.106 0.748
Season 1 2746 23.8 < 0.0001
F X S 1 185 1.60 0.219
C X S 1 105 0.908 0.352
F X C X S 1 19.4 0.168 0.686
Error 21 2425    
Total 28 5784    

Young per adult female

Source d. f. Sum of squares F-ratio P
Food 1 0.188 0.706 0.417
Cover 1 1.085 4.08 0.066
F X C 1 0.280 1.05 0.325
Subjects (groups) 12 3.19    
Season 1 0.378 2.03 0.179
F X S 1 0.146 0.782 0.394
C X S 1 0.094 0.507 0.490
F X C X S 1 0.021 0.115 0.740
Season X subjects (groups) 12 2.23    
Total 31 7.62    

Young survived to adult size

Source d. f. Sum of squares F-ratio P value
Food 1 0.281 2.00 0.183
Cover 1 0.079 0.560 0.468
F X C 1 0.040 0.286 0.602
Error 12 1.69    
Total 15 2.09    

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