Results/Conclusions Our hypothesis was partially supported. Aquatic species richness per sample was the highest at the smallest lake that was sampled (p<0.05); however, at this same lake, terrestrial species richness was the lowest (p<0.05). The finding that terrestrial and aquatic species richness exhibited opposing trends is potentially due to variation in dispersal mechanisms between land and aquatic species. The other three lakes did not demonstrate the hypothesized inverse relationship between lake size and species richness. This may be due to the fact that at all lakes, for both terrestrial and aquatic species, invasive species appear to be at early stages of establishment – though both aquatic and terrestrial invasive species were present at all sites, they did not dominate any of the lakes. Continued long-term monitoring will be important for ensuring that appropriate management techniques are implemented should these species continue to establish and increase in their dominance.