Potamogeton berchtoldii

Tracheophyta MagnoliopsidaPotamogetonaceaePotamogetonPotamogeton berchtoldii


A variable species which occurs in a wide range of still or slowly flowing waters, which may be base-rich or base-poor, oligotrophic, mesotrophic or eutrophic, and exposed or sheltered. P. berchtoldii is sometimes found in brackish sites, but is usually replaced in such habitats by P. pusillus. 0-710 m (Lochan nan Cat, Mid Perth).



World Distribution

Circumpolar Boreo-temperate element.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 12

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 5


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.7

Annual Precipitation (mm): 1027

Length: 60

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)



Clonality - primary

Detaching ramets above ground (often axillary)

Distribution information

Count of 10km squares in Great Britain: 1461

Count of 10km squares in Ireland: 317

Count of 10km squares in the Channel Isles: 2

Atlas Change Index: 1.66

Weighted Changed Factor: 34

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.