OVERVIEW: Introduced (non-native) species that becomes established may eventually become invasive, so tracking introduced species provides a baseline for effective modeling of species trends and interactions, geospatially and temporally. OTHER DIFFERENCES: V2.1 provides: a broader inclusion of arthropods approximate dates of introduction (where available) 4,693 references improved disambiguation of scientific names biocontrol species information (where applicable) taxonomic synonyms, where available, in taxonRemarks field unique occurrenceIDs no habitat information. FIELDS: V1.0: 14 fields - 9 in Taxon Core, 4 in Species Distribution Extension, 1 in Species Profile Extension V2.1: 20 fields in Taxon Core, 39 in Occurrence Extension, 9 in Species Distribution Extension, 8 in Vernacular Names Extension, 8 in Literature Reference Extension, and 6 in Species Profile Extension. The other two related checklists for the United States, published separately as V1.0, are for the States of Alaska and Hawaii.ĭifferences between V1.0 and V2.1 (this dataset): SIZE: V1.0 - 5,006 accepted names V2.1 - 8,654 accepted names and two unranked hybrids. Like that checklist, V2.1 presents validated and verified national checklists of introduced (alien) and invasive alien species at the sub-country level. Geological Survey on October 12, 2020, at. This is version 2.1 of the dataset published to GBIF by the Invasive Species Specialist Group (ISSG) on behalf of the U.S.
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