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1.1.2. Laichkrautgesellschaften

Potamion

Description

Phyonomy and Ecology (© Delarze & al. 2015)

Diese Unterwassergesellschaften werden von im Boden wurzelnden Gefässpflanzen dominiert. Es handelt sich durchweg um Wasserpflanzen, die auf Austrocknung sehr empfindlich reagieren. Bei den untergetauchten Arten erscheinen nur die Blütenstände an der Wasseroberfläche. Laichkrautgesellschaften kommen in stehenden Gewässern bis in 4 m (ausnahmsweise 7 m) Tiefe vor, typischerweise ausserhalb der Schwimmblattgesellschaften (1.1.4). Zusätzlich trifft man die Einheit in langsam fliessenden Gewässern mit laminarer, ungestörter Strömung an oder auch in seichten Stillgewässern, wo eine bewegte Wasseroberfläche oder starke Schwankungen des Wasserspiegels einen Schwimmblattgürtel verhindern.

Distribution map

  • Calculation method

    Current distribution: Weighted sum (number of characteristic and frequent species) per hectare based on current observations. Reported characteristic species are given a weighting of 10, while others are counted without weighting. The habitat is considered to be present in a grid cell (5 x 5 km) if it contains at least one hectare with a minimum value of 11 points.

    Potential distribution: Weighted sum (number of characteristic and frequent species) per hectare based on species distribution models. The calculation strategy is the same as for current distribution, but maps derived from species distribution models are used instead of current observations.

List of species

bold Dominant species, influencing the appearance of the habitat
Character species Character species
Less strictly linked to a specific habitat Less strictly linked to a specific habitat


Scientific name English name
Character species Potamogeton acutifolius LinkSpitzblättriges Laichkraut
Character species Potamogeton alpinus Balb.Alpen-Laichkraut
Character species Potamogeton compressus L.Plattstängliges Laichkraut
Character species Potamogeton crispus L.Krauses Laichkraut
Character species Potamogeton gramineus L.Grasartiges Laichkraut
Character species Potamogeton obtusifolius Mert. & W. D. J. KochStumpfblättriges Laichkraut
Character species Potamogeton perfoliatus L.Durchwachsenes Laichkraut
Character species Potamogeton praelongus WulfenLangblättriges Laichkraut
Character species Potamogeton trichoides Cham. & Schltdl.Haarförmiges Laichkraut
Character species Potamogeton ×angustifolius Bercht. & J. PreslSchmalblättriges Laichkraut
Character species Potamogeton ×nitens WeberSchimmerndes Laichkraut
Less strictly linked to a specific habitat Alisma gramineum Lej.Grasblättriger Froschlöffel
Less strictly linked to a specific habitat Ceratophyllum submersum L.Zartes Hornblatt
Less strictly linked to a specific habitat Elodea canadensis Michx.NKanadische Wasserpest
Less strictly linked to a specific habitat Elodea densa (Planch.) Casp.NDichtblättrige Wasserpest
Less strictly linked to a specific habitat Elodea nuttallii (Planch.) H. St. JohnNNuttalls Wasserpest
Less strictly linked to a specific habitat Lagarosiphon major (Ridl.) MossNSchmalrohr
Less strictly linked to a specific habitat Myriophyllum heterophyllum Michx.NVerschiedenblättriges Tausendblatt
Less strictly linked to a specific habitat Myriophyllum spicatum L.Ähriges Tausendblatt
Less strictly linked to a specific habitat Najas flexilis (Willd.) Rostk. & W. L. E. SchmidtBiegsames Nixenkraut
Less strictly linked to a specific habitat Najas marina L.Grosses Nixenkraut
Less strictly linked to a specific habitat Najas minor All.Kleines Nixenkraut
Less strictly linked to a specific habitat Nitella hyalina (DC.) C. AgardhVielästige Glanzleuchteralge
Less strictly linked to a specific habitat Potamogeton berchtoldii FieberKleines Laichkraut
Less strictly linked to a specific habitat Potamogeton filiformis Pers.Fadenförmiges Laichkraut
Less strictly linked to a specific habitat Potamogeton friesii Rupr.Fries' Laichkraut
Less strictly linked to a specific habitat Potamogeton lucens L.Glänzendes Laichkraut
Less strictly linked to a specific habitat Potamogeton pectinatus L.Kammförmiges Laichkraut
Less strictly linked to a specific habitat Potamogeton pusillus L.Zwerg-Laichkraut
Less strictly linked to a specific habitat Ranunculus peltatus subsp. baudotii (Godr.) C. D. K. CookBaudot-Wasserhahnenfuss
Less strictly linked to a specific habitat Ranunculus rionii LaggerRions Wasserhahnenfuss
Less strictly linked to a specific habitat Ranunculus trichophyllus ChaixHaar-Wasserhahnenfuss
Less strictly linked to a specific habitat Vallisneria spiralis L.NWasserschraube
Less strictly linked to a specific habitat Zannichellia palustris L.Teichfaden

Status

Status according to the habitat priority list at the national level

National Priority 3: medium national priority
Need to take action 2:
International responsibility 1: weak

Status on national Red List 2016

IUCN status:   Vulnerable

LC: Non menacé

Additional information

IUCN criteria: CD3a

  • Legend
    COCollapsed
    CRCritically Endangered
    ENEndangered
    VUVulnerable
    NTNear Threatened
    LCLeast Concern

Legal protection (NCHO appendix 1)

Natural habitat worthy of protection

Regeneration status 2016

Regeneration class 2: 5 to 10 years