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US-RIIS Team

United States Register of Introduced and Invasive Species (US-RIIS), all versions
This is the landing page for all versions of the United States Register of Introduced and Invasive Species (US-RIIS). There are two versions as of 2022-11-04. Version 3.0 is anticipated on or before 2024-12-31. The US-RIIS is comprised of three lists, one each for Alaska (AK), Hawaii (HI), and the conterminous United States (L48). Each list includes taxonomic and ecological information about introduced (non-native), established (reproducing) taxa that: are, or may become, invasive (harmful) in the locality; that are not known to be harmful there; and/or that have been used for biological control in the locality. To be included in the US-RIIS, a taxon must be non-native everywhere in the locality and established...
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