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Description |
Geographic Range [top]
Range Description:
The species is a northern temperate species, occurring throughout much of Europe north of the Mediterranean Basin, including the Baltic states and European Russia, extending east through Kazakhstan and Kyrgyzstan to Myanmar, China (Heilongjiang Province), and Japan (Preston 1995, Wiegleb and Kaplan 1998, Naturhistoriska Riksmuseet 2010, efloras 2011). It also occurs in northern North America including Canada and Alaska.
Countries occurrence:
Native:
Austria; Belarus; Belgium; Canada (Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland I, Northwest Territories, Nova Scotia, Ontario, Prince Edward I., Québec, Saskatchewan, Yukon); China (Heilongjiang); Czech Republic; Denmark; Estonia; Finland; France (France (mainland)); Germany; Greece (Greece (mainland)); Hungary; Iceland; Ireland; Italy (Italy (mainland)); Kazakhstan; Kyrgyzstan; Latvia; Liechtenstein; Lithuania; Luxembourg; Mongolia; Myanmar (Myanmar (mainland)); Netherlands; Norway; Poland; Romania; Russian Federation (Buryatiya, Central European Russia, Chita, East European Russia, Irkutsk, Kaliningrad, Krasnoyarsk, North European Russia, Northwest European Russia, South European Russia, Tuva, West Siberia, Yakutiya); Serbia (Serbia); Slovenia; Spain (Spain (mainland)); Sweden; Switzerland; Ukraine (Ukraine (main part)); United Kingdom (Great Britain, Northern Ireland); United States (Alaska, Connecticut, Idaho, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Washington, Wisconsin, Wyoming)
Additional data:
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Most populations of the species appear to be stable, although four populations have been lost in Switzerland and only one remains (Welten and Sutter 1982).
Current Population Trend: Stable
Additional data:
Habitat and Ecology [top]
Habitat and Ecology:
The species typically grows in mesotrophic or occasionally eutrophic acidic or neutral still or very slow-flowing waters, often over deep silt, including lakes, ponds, canals and occasionally the backwaters of rivers.
Systems: Terrestrial; Freshwater
Threats [top]
Major Threat(s):
There are no known past, ongoing, or future threats to the survival of this species.
Conservation Actions [top]
Conservation Actions:
There are no conservation measures in place or needed. The species has been assessed as Vulnerable in Germany (Ludwig and Schnittler 1996) and as Critically Endangered in Switzerland (Moser et al. 2002).
Citation: Allen, D.J. 2011. Potamogeton obtusifolius. The IUCN Red List of Threatened Species 2011: e.T167905A6411823. http://dx.doi.org/10.2305/IUCN.UK.2011-2.RLTS.T167905A6411823.en. Downloaded on 17 November 2016.
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