Figure 4. Smooth fitted functions plots between E. canadensis abundance variation and three abiotic metrics (water clarity, longitude and latitude) and five native macrophyte biodiversity metrics (Shannon diversity, plant cover, submerged plant cover, floating plant cover and beta diversity) obtained in the Boosted Regression Trees variance partitioning scheme analyses at each lake group. Water clarity values for each sampling point is defined as: lake secchi depth at the deepest point of each lake/water depth at the PVI sampling point. Plant cover, submerged plant cover, and floating plant cover values are expressed as %.