Figure 1. NMDS of a Bray-Curtis dissimilarity matrix based on beta diversity as measured by sedDNA (A) and microscopy (B) from 1945 to 2010. The red to blue gradient indicates older to more recent samples. Vectors for sample year and the lake physiochemical conditions that correlated with each dissimilarity matrix are fitted. Vector length is proportional to the strength of the correlation. *** = p < 0.001, ** = p < 0.01, * = p < 0.05. NMDS stress values are shown.