Ecological Archives
E091-195-A2
Jennifer G. Howeth and Mathew A. Leibold. 2010. Species dispersal rates alter diversity and ecosystem stability in pond metacommunities. Ecology 20:2727–2741.
Appendix B. Analysis of beta-diversity of zooplankton as a function of dispersal rate.
TABLE B1. Effects of planktonic dispersal rate on beta-diversity (Jaccard’s dissimilarity) of zooplankton in pond metacommunities. Results reported from repeated measures ANOVA for the three pairwise community comparisons within the metacommunity. |
|
Diversity response |
df |
SS |
F |
P value |
Press no predation to press predation |
Dispersal |
2 |
0.11 |
0.71 |
0.517 |
Time |
11 |
0.36 |
1.68 |
0.089 (0.032) |
Time × disp |
22 |
0.72 |
1.67 |
0.045 (0.091) |
Press no predation to pulsed predation§ |
Dispersal |
2 |
0.53 |
1.26 |
0.329 |
Time |
11 |
1.24 |
3.40 |
0.001 |
Time × disp |
22 |
0.80 |
1.10 |
0.364 |
Press predation to pulsed predation |
Dispersal |
2 |
0.01 |
0.11 |
0.897 |
Time |
11 |
0.25 |
2.51 |
0.007 |
Time × disp |
22 |
0.18 |
0.87 |
0.638 |
|
§ arcsine square-root transformed
Probability values from final 7 wk of the experiment are noted in parenthesis, if the significance level is different from the 12 wk analysis.
[Back to E091-195]