Table 1
Heterogeneity statistics for the summary effect sizes per 100 g and per 100 cm3 of soil.
| 100 g | 100 cm3 | |||||
|---|---|---|---|---|---|---|
| Summary effect | Qt | Phetero | I2 | Qt | Phetero | I2 |
| Overall richness | 740.37 | 0.000 | 23.37 | 49.75 | 0.103 | 12.42 |
| Overall abundance | 525.42 | 0.007 | 2.67 | 320.94 | 0.000 | 10.28 |
| Richness of c-p 1 | 347.88 | 0.000 | 8.50 | 129.66 | 0.000 | 66.24 |
| Richness of c-p 2 | 486.97 | 0.000 | 15.43 | 79.06 | 0.000 | 34.16 |
| Richness of c-p 3 | 453.61 | 0.000 | 32.25 | 147.73 | 0.000 | 73.73 |
| Richness of c-p 4 | 520.05 | 0.000 | 29.18 | 42.39 | 0.357 | 7.62 |
| Richness of c-p 5 | 390.74 | 0.001 | 4.56 | 54.84 | 0.025 | 17.00 |
| Abundance of c-p 1 | 553.15 | 0.009 | 2.43 | 330.58 | 0.000 | 6.07 |
| Abundance of c-p 2 | 422.77 | 0.028 | 2.57 | 186.77 | 0.000 | 27.30 |
| Abundance of c-p 3 | 1,299.77 | 0.000 | 2.07 | 224.18 | 0.000 | 43.86 |
| Abundance of c-p 4 | 609.75 | 0.000 | 13.95 | 70.48 | 0.088 | 9.27 |
| Abundance of c-p 5 | 730.70 | 0.000 | 9.33 | 159.32 | 0.000 | 14.05 |
| Richness of bacterivores | 584.92 | 0.000 | 17.00 | 76.29 | 0.000 | 29.57 |
| Richness of fungivores | 392.01 | 0.000 | 18.47 | 105.16 | 0.000 | 57.06 |
| Richness of herbivores | 358.48 | 0.000 | 15.42 | 69.50 | 0.000 | 37.84 |
| Richness of predators | 267.55 | 0.000 | 18.34 | 50.88 | 0.061 | 14.51 |
| Richness of omnivores | 446.01 | 0.000 | 18.48 | 48.12 | 0.135 | 11.56 |
| Abundance of bacterivores | 519.91 | 0.001 | 3.80 | 396.91 | 0.000 | 9.81 |
| Abundance of fungivores | 645.08 | 0.034 | 1.61 | 357.16 | 0.000 | 17.18 |
| Abundance of herbivores | 762.77 | 0.015 | 1.62 | 430.30 | 0.001 | 3.92 |
| Abundance of predators | 768.10 | 0.000 | 6.72 | 144.93 | 0.000 | 18.25 |
| Abundance of omnivores | 747.91 | 0.000 | 11.09 | 344.69 | 0.000 | 12.77 |
Figure 1
Effect of ecosystem on genus-level nematode richness. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing overall richness of nematodes per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels.
Figure 2
Effect of ecosystem on genus-level nematode richness. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing overall richness of nematodes per 100 cm3 of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels.
Figure 3
Effect of ecosystem on genus-level nematode richness of each c-p guild. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing richness of nematodes at c-p guilds 1 to 5 per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in c-p 1 and c-p 5 forest plots is the enlarged view of the respective forest plots.
Figure 4
Effect of ecosystem on genus-level nematode richness of each c-p guild. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing richness of nematodes at c-p guilds 1 to 5 per 100 cm3 of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in c-p 5 forest plot is the enlarged view of the respective forest plot.
Figure 5
Effect of ecosystem on genus-level nematode richness of each trophic group. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing richness of nematodes of each trophic group per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in fungivores and predators forest plots is the enlarged view of the respective forest plots.
Figure 6
Effect of ecosystem on genus-level nematode richness of each trophic group. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing richness of nematodes of each trophic group per 100 cm3 of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in predators and omnivores forest plots is the enlarged view of the respective forest plots.
Figure 7
Effect of ecosystem on genus-level nematode abundance. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing overall abundance of nematodes per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels.
Figure 8
Effect of ecosystem on genus-level nematode abundance. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing overall abundance of nematodes per 100 cm3 in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels.
Figure 9
Effect of ecosystem on genus-level nematode abundance of each c-p guild. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing abundance of nematodes at c-p guilds 1 to 5 per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in c-p 1, c-p 4, and c-p 5 forest plots is the enlarged view of the respective forest plots.
Figure 10
Effect of ecosystem on genus-level nematode abundance of each c-p guild. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing abundance of nematodes at c-p guilds 1 to 5 per 100 cm3 of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in c-p 1, c-p 4, and c-p 5 forest plots is the enlarged view of the respective forest plots.
Figure 11
Effect of ecosystem on genus-level nematode abundance of each trophic group. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing abundance of nematodes of each trophic group per 100 g of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in fungivores, predators, and omnivores forest plots is the enlarged view of the respective forest plots.
Figure 12
Effect of ecosystem on genus-level nematode abundance of each trophic group. Mean values are the weighted summary effect sizes and the bars represent standard error for comparing abundance of nematodes of each trophic group per 100 cm3 of soil in different ecosystems. Letter n is the number of studies reporting data at each ecosystem. P hetero < 0.05 is evidence that ecosystem levels differed. I 2 is the percentage of true or real variation among ecosystem levels. The inset in predators and omnivores forest plots is the enlarged view of the respective forest plots.