J.W. Robbins
Identity
Unique IDELEMENT_GLOBAL.2.138810
Element CodePMPOT030Q0
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 NamesOakes' pondweed (EN) Potamot d'Oakes (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 Date2015-07-31
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 Occurrences81 - 300
Rank ReasonsPotamogeton oakesianus is a perennial aquatic forb occurring in slow-moving shallow, acidic waters of bogs, ditches, marshes, lakes, mudflats, pools, ponds, streams, and swamps of eastern North America from Ontario and Minnesota, south to Virginia, and north through Newfoundland and Labrador in the United States and Canada. Disjunct populations also potentially occur in Montana and British Columbia. There are an estimated 146 occurrences of this taxon, which are threatened by drainage and destruction of wetlands, water pollution, 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 oakesianus is considered secure.
Range Extent CommentsPotamogeton oakesianus occurs in eastern North America from Ontario and Minnesota, south to Virginia, and north through Newfoundland and Labrador in the United States and Canada (FNA 2000). Disjunct populations also potentially occur in Montana and British Columbia (FNA 2000, Weakley and the Southeastern Flora Team 2024). Range extent was estimated to be 2.9 million square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1993 and 2024 (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are 146 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact CommentsPotamogeton oakesianus is somewhat threatened by drainage and destruction of wetlands and to a lesser extent by water pollution (Southern Appalachian Species Viability Project 2002). Additional threats are not widely documented but likely include erosion, 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.