Figure 3. GAMs fitted to the trend in relative abundance as measured by sedDNA and occurrence relative to sampling frequency as measured by microscopy for chlorophytes (A), dinoflagellates (B), ochrophytes (C), and bacillariophytes (D). For each phylum, r values and significance levels are shown for the correlation between sedDNA and microscopy GAM-estimated annual values from 1945 to 2010. Shaded areas show the 95% confidence intervals.