Ecological Archives E088-063-A5

William F. Morris, Ruth A. Hufbauer, Anurag A. Agrawal, James D. Bever, Victoria A. Borowicz, Gregory S. Gilbert, John L. Maron, Charles E. Mitchell, Ingrid M. Parker, Alison G. Power, Mark E. Torchin, and Diego P. Vázquez. 2007. Direct and interactive effects of enemies and mutualists on plant performance: a meta-analysis. Ecology 88:1021–1029.

Appendix E. Results from subsampling studies from the entire data set.

This appendix includes tables showing results from subsampling studies from the entire data set, as well as statistical test for the comparisons illustrated in Fig. 4 in the text.

TABLE E1: Number of 5000 randomly drawn subsets of the studies from the full data set for which the upper 95% confidence limit for the specified log response ratio effect size was less than zero (<0) or the lower 95% confidence limit was greater than zero (>0), under three criteria for non-independence of data from the same study (see text).

Effect

Different agents and independent controls

Different agents

Different controls

<0

>0

<0

>0

<0

>0

Individual effect of enemies

5000

0

5000

0

5000

0

Overall effect of enemies

5000

0

5000

0

5000

0

Individual effect of mutualists

0

5000

0

5000

0

5000

Overall effect of mutualists

0

5000

0

5000

0

5000

Enemy–enemy interaction effect

0

0

0

0

0

0

Mutualist–mutualist interaction effect

0

0

0

0

0

449

Enemy–mutualist interaction effect

0

4109

0

4208

0

4888


TABLE E2: Results of homogeneity tests for comparisons illustrated in Fig. 4. All tests have 1 df.

Effect

Field vs. greenhouse:

Herbaceous vs. woody plants:

Crop plants vs. non-crops

Qb

P

Qb

P

Qb

P

Herbivore individual effects

0.268

0.605

1.045

0.307

4.530

0.033

Pathogen individual effects

7.313

0.007

7.844

0.005

2.526

0.112

Mutualist individual effects

1.171

0.279

0.272

0.602

0.572

0.449

Enemy–enemy interactions

0.839

0.360

0.429

0.513

0.856

0.355

Enemy–mutualist interactions

0.078

0.780

0.008

0.929

0.175

0.676



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