Fásra
The fine leaves of Potamogeton pectinatus dominate this aquatic community and it is the only constant species. Occasionally, it is accompanied by Potamogeton berchtoldii, the whorled stems of Myriophyllum spicatum or, in more saline waters, Ruppia maritima/cirrhosa. More rarely, one may find the floating duckweeds Lemna trisulca and Lemna minor or other pondweeds.
Éiceolaíocht
This community is to be found mostly in lagoons with lower salinity, but also occurs in lowland rivers and freshwater lakes. It is associated with fairly base-rich and distinctly eutrophic waters.
Fo-phobail
No sub-communities are currently described.
Pobail chosúla
The dominance of Potamogeton pectinatus differentiates this community from the SW1A Ruppia maritima/cirrhosa lagoon community in which P. pectinatus may also occur.
Luach caomhnaithe
Many examples of this community occur in water bodies that qualify as EU HD Annex I priority habitat 1150 Lagoons*. Species diversity is low.
Bainistíocht
This community is typically unmanaged. It is mainly threatened by impacts which affect lagoons, including drainage for purposes of agricultural reclamation and natural siltation. The association with nutrient-enriched waters mean that eutrophication of both lakes and rivers is likely to affect its abundance.