Summary Relative abundance trend of key non-native species, for example Brazilian waterweed (Egeria densa) and water hyacinth (Eichhornia crassipes), and harmful invasive species such as Microcystis aeruginosa and other harmful algal blooms (HAB). General Information What is it? Complementary to measuring abundance of native species, is keeping track of non-native, invasive plant species. Under disturbed hydrologic and land-use conditions, non-native aquatic plants can dominate and fundamentally shift ecosystems to new states.
