Fig. 6
From: Small-scale phenotypic differentiation along complex stream gradients in a non-native amphipod
Visualization of significant model terms in generalized least squares models on phenotypic traits involved in mate finding and assessment. We depict marginal effects for gradual variation in the length of the 1st (a, c, d, f) and 2nd antennae (b, e, g) along environmental PC 1 – PC 4 (Table 4). Data are shown separately for both sexes if the models uncovered significant sex-effects. Solid lines show linear relationships of raw data with 95% confidence intervals (shaded area), while dashed lines represent the linear relationships based on predicted values that were adjusted for other predictors in each model (e.g., body length). For display purpose, data points were slightly shifted using the position_jitter-function in ggplot2