P3Dx Complexes of fresh-water submerged vegetation
Description
Aquatic communities of true hydrophytes growing in permanently submersed areas.
Protection
Still poorly resolved for the lack of data, this units comprises several codes protected by the EU Habitat Directive: 3140 ("Hard oligo-mesotrophic waters with benthic vegetation of Chara spp."), 3150 ("Natural eutrophic lakes with Magnopotamion or Hydrocharition-type vegetation"), 3160 ("Natural dystrophic lakes and ponds") y 3260 ("Water courses of plain to montane levels with the Ranunculion fluitantis and Callitricho-Batrachion vegetation").Floristic Composition
Frequent species
Potamogeton crispus
41%,
Ranunculus penicillatus
40%,
Ranunculus peltatus
38%,
Potamogeton nodosus
16%,
Oenanthe crocata
14%,
Callitriche stagnalis
14%,
Potamogeton perfoliatus
14%,
Potamogeton trichoides
11%,
Lemna minor
9%,
Sparganium neglectum
9%,
Myriophyllum alterniflorum
8%,
Sparganium emersum
8%,
Alisma plantago-aquatica
6%,
Nasturtium officinale
5%,
Sparganium angustifolium
5%,
Helosciadium nodiflorum
5%,
Callitriche hamulata
5%,
Stuckenia pectinata
5%
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Indicator species
Potamogeton crispus 0.41,
Ranunculus penicillatus 0.4,
Ranunculus peltatus 0.38,
Potamogeton nodosus 0.16,
Potamogeton perfoliatus 0.14,
Oenanthe crocata 0.13,
Callitriche stagnalis 0.12,
Potamogeton trichoides 0.11,
Lemna minor 0.09,
Sparganium neglectum 0.09,
Myriophyllum alterniflorum 0.08,
Sparganium emersum 0.08,
Alisma plantago-aquatica 0.06,
Stuckenia pectinata 0.05,
Callitriche hamulata 0.05,
Sparganium angustifolium 0.05,
Antinoria agrostidea 0.04,
Callitriche brutia 0.04,
Nasturtium officinale 0.03,
Panicum repens 0.03,
Glyceria fluitans 0.03,
Veronica anagallis-aquatica 0.03,
Potamogeton pusillus 0.03,
Potamogeton polygonifolius 0.03,
Myriophyllum spicatum 0.03,
Ceratophyllum demersum 0.03,
Groenlandia densa 0.03,
Trocdaris verticillatum 0.03,
Littorella uniflora 0.03,
Juncus heterophyllus 0.03,
Isoetes fluitans 0.03,
Mentha longifolia 0.02,
Schoenoplectus lacustris 0.01,
Rumex conglomeratus 0.01,
Zannichellia peltata 0.01,
Ranunculus flammula 0.01,
Ranunculus trichophyllus 0.01,
Ranunculus ololeucos 0.01,
Potamogeton natans 0.01,
Calamagrostis pseudophragmites 0.01,
Callitriche platycarpa 0.01,
Carex acuta 0.01,
Cyperus longus 0.01,
Elatine macropoda 0.01,
Eleocharis palustris 0.01,
Hydrocotyle vulgaris 0.01,
Hypericum elodes 0.01,
Mentha pulegium 0.01,
Lythrum junceum 0.01,
Persicaria amphibia 0.01,
Phalaroides arundinacea 0.01,
Potamogeton berchtoldii 0.01,
Potamogeton gramineus 0.01,
Potamogeton lucens 0.01,
Baldellia ranunculoides aggr. 0.01
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Phytosociology
- Callitricho brutiae-Ranunculetum peltati
- Callitricho brutiae-Ranunculetum pseudofluitantis
- Callitricho stagnalis-Ranunculetum saniculifolii
- Charetum asperae
- Charetum conniventis
- Charetum fragilis
- Charetum hispidae
- Charetum vulgaris
- Lemnetum gibbae
- Lemnetum minoris
- Lemnetum trisulcae
- Lemno minoris-Hydrocharitetum morsus-ranae
- Lemno-Azolletum filiculoidis
- Lemno-Spirodeletum polyrhizae
- Limnanthemetum nymphoidis
- Myriophyllo alterniflori-Callitrichetum brutiae
- Myriophyllo alterniflori-Potametum crispi
- Myriophyllo alterniflori-Potametum natantis
- Myriophyllo verticillati-Potametum pectinati
- Najadetum marinae
- Nitelletum flexilis
- Nitelletum opacae
- Nymphaeetum albo-luteae
- Potametum lucentis
- Potametum perfoliato-crispi
- Potamo-Ceratophylletum demersi
- Potamo-Utricularietum australis
- Ranunculetum aquatilis
- Ranunculo trichophylli-Groenlandietum densae
- Ranunculo tripartiti-Myriophylletum alterniflori
- Riccietum fluitantis
- Tolypelletum glomeratae
- Zannichellietum pedicellatae
Relations with other habitat types
Although the scarcity of available rélévés of this as patently as understandably underrecorded vegetation prevents it for the time being, ample variation in terms of depth, conductivity, nutrient content and flow velocity surely warrants the recognition of meaningful subunits accounting for floristic and ecomorphological differences (filmy, finely divided or floating leaves; rooted or unrooted plants, etc.).
Regional distribution
Known occurrences and potential area of occupancy of the habitat type in the study region.
