Appendix 2—table 2. First level meta-analysis comparing the effects of chemical stressors and nutrient enrichment.

Results of Wald-type chi-square tests comparing the grand mean effect sizes of the three response variables (decomposer diversity, abundance and litter decomposition) between chemical stressors and nutrient enrichment.

Response	QM	Df	N	p-value
Diversity	25.65	2	174	<0.001
Abundance	7.92	2	424	0.019
Litter decomposition	17.61	2	165	<0.001