Fig. 5: Results for species-level correlations and traits.
From: Insect decline in forests depends on species’ traits and may be mitigated by management
Species-level correlations decline with a body size and b total incidence of each species per region. Correlations (shown as partial residuals of Pearson’s r between year and the number of individuals per species in a region, excluding single occurrences) varied among c trophic groups, with the majority of the species in all groups except herbivores having negative values on average. Numbers in c indicate species*region combination for each trophic group (center lines in boxplots specify the median, boxes cover the range between the lower and upper quartile, whiskers extend to 1.5x interquartile range). Statistical details are given in Supplementary Tables 3 and 4. Regression lines (95% CI in shaded polygons) indicate the marginal predictions of a linear mixed-effects model. Dashed horizontal lines mark null with negative values indicating species with declining and positive values species with increasing individual numbers over time.
