3130 - Eaux stagnantes, oligotrophes à mésotrophes avec végétation des Littorelletea uniflorae et/ou des Isoeto-Nanojuncetea

Oligotrophic to mesotrophic standing waters with vegetation of the Littorelletea uniflorae and/or of the Isoëto-Nanojuncetea

Liste hiérarchisée et descriptifs des habitats d'intérêt communautaire de la directive "Habitats"

Description

22.12 x 22.31 - aquatic to amphibious short perennial vegetation, oligotrophic to mesotrophic, of lake, pond and pool banks and water-land interfaces belonging to the Littorelletalia uniflorae order.
22.12 x 22.32 - amphibious short annual vegetation, pioneer of land interface zones of lakes, pools and ponds with nutrient poor soils, or which grows during periodic drying of these standing waters: Isoeto- Nanojuncetea class.
These two units can grow together in close association or separately. Characteristic plant species are generally small ephemerophytes.

Espèces caractéristiques

Plants: 22.12 x 22.31: Littorella uniflora, #Luronium natans, Potamogeton polygonifolius, Pilularia globulifera, Juncus bulbosus ssp. bulbosus, Eleocharis acicularis, Sparganium minimum.
22.12 X 22.32 : #Lindernia procumbens, Elatine spp., Eleocharis ovata, Juncus tenageia, Cyperus fuscus, C.flavescens, C.michelianus, Limosella aquatica, Schoenoplectus supinus, Scirpus setaceus, Juncus bufonius, Centaurium pulchellum, Centunculus minimus, Cicendia filiformis.

Correspondances avec la classification du Paléarctique

22.12 x (22.31 and 22.32)

Correspondances avec d'autres classifications

German classification : ‘240301 mesotropher See (Bleisee) (mit Zwergbinsenfluren -wechselnass-, P143)', ‘240306 meso- bis eutrophes, sich selbst überlassenes Abbaugewässer (mit Zwergbinsenfluren -wechselnass-, P143)'.
Nordic classification : ‘6411 Eleocharis acicularis-typ', ‘6412 Ranunculus reptans-Subularia aquatica-typ'.
in the Azores the corresponding association is Isoetetum azorica Lüp.

Remarques

This habitat type could also develop in wet dune slacks (see 16.32 in 2190, included in Annex I).
In the Atlantic region, such lakes can shelter glacial relict species, e.g. fish such as Selvelinus alpinus. Areas with a variable hydrological system, periodically lacking vegetation due to trampling, should not be included.

Bibliographie

 Conseil de l'Union européenne, 2013. Directive 2013/17/UE du Conseil du 13 mai 2013 portant adaptation de certaines directives dans le domaine de l'environnement, du fait de l'adhésion de la République de Croatie. Annexes. Partie B Protection de la nature. Journal officiel de l'Union européenne, L 158 du 10/06/2013, p. : 195-203. (Source)

 European Commission, 2013. Interpretation manual of European Union habitats. EUR 28. European Commission, DG Environment, 144 p. (Source)

Jenssen, S. (1979). Classification of lakes in southern Sweden on the basis of their macrophyte composition by means of multivariate methods. Vegetatio 39:129-146.