Fig. 1From: Does the growing of Bt maize change abundance or ecological function of non-target animals compared to the growing of non-GM maize? A systematic reviewCriteria for quantitative data extraction (database for meta-analyses) and qualitative data extraction (summary in tables). Numbers indicate references in each of the categories of the narrative-only summary (on the right side) and in the database (at the bottom). Note: several references contained data for more than one category, e.g., abundance data for the database as well as biodiversity data for the narrative-only summary, and were thus counted multiple timesBack to article page