L.
Identity
Unique IDELEMENT_GLOBAL.2.148022
Element CodePMPOT030N0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderNajadales
FamilyPotamogetonaceae
GenusPotamogeton
Other Common Namesfloating pondweed (EN) Potamot flottant (FR)
Concept ReferenceKartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-09-30
Change Date1984-06-25
Edition Date2024-09-30
Edition AuthorsN. Ventrella (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsPotamogeton natans is a perennial aquatic forb occurring nearly worldwide in slow-moving waters of ponds, lakes, streams, marshes, and ditches of North America and Eurasia. In North America, it occurs from Alaska and the Northwest Territories, south to California, east to New Mexico, north to Colorado, east through New Jersey, and north through Newfoundland and Labrador in the United States and Canada. There are over 5,000 occurrences of this taxon, which are potentially threatened by eutrophication, development, water diversion, alteration of hydrology, erosion, recreational activities, invasive species, climate change, and other threats in some places. Little is known about threats or trends, but with a large range extent, high number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, Potamogeton natans is considered secure.
Range Extent CommentsPotamogeton natans is a widespread species, occurring in North America and Eurasia (POWO 2024). In North America, it occurs from Alaska and the Northwest Territories, south to California, east to New Mexico, north to Colorado, east through New Jersey, and north through Newfoundland and Labrador in the United States and Canada (FNA 2000). Range extent was estimated to be over 83 million square kilometers using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024, there are estimated to be over 5,000 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact CommentsThreats to Potamogeton natans are not widely documented but likely include development, water diversion, alteration of hydrology, erosion, pollution and eutrophication, recreational activities, invasive species, climate change, and other threats in some places, though there is insufficient data, including anecdotal accounts, to understand scope and severity of threats for this species.