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4.3.7. Krummseggenrasen

Caricion curvulae

Description

Phyonomy and Ecology (© Delarze & al. 2015)

Die von der Krummsegge (Carex curvula) dominierten Rasen sind Klimaxgesellschaften der alpinen Stufe. Es sind dicht zusammenhängende, niederwüchsige Bestände aus stets bräunlichen, selbst im Frühling nicht grünen Horsten, zwischen denen Erdflechten wachsen. Dies gibt den Gesellschaften selbst im Sommer einen herbstlichen Anstrich. Die lockig gedrehten Blattspitzen von Carex curvula prägen zusätzlich das Aussehen des Rasenteppichs. Die Krummsegge wird in der unteren alpinen Stufe oft durch Hallers Schwingel (Festuca halleri) ersetzt. Auf skelettreichen Böden, die stark dem Wechsel von Auftauen und Gefrieren ausgesetzt sind, finden sich Pionierstadien mit der Dreispaltigen Binse (Juncus trifidus). Der Boden ist sauer, die Basen und Nährstoffe sind weitgehend ausgewaschen, und durch die geringe biologische Aktivität besitzt der Boden einen hohen Anteil an wenig zersetzten organischen Komponenten (Podsolisierung).

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.

Pictures

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 Androsace puberula Jord. & Fourr.Fleischroter Mannsschild
Character species Carex curvula All. subsp. curvulaGewöhnliche Krumm-Segge
Character species Festuca halleri All.Hallers Schwingel
Character species Gentiana alpina Vill.Alpen-Glocken-Enzian
Character species Hieracium piliferum aggr.Grauzottiges Habichtskraut
Character species Juncus trifidus L.Dreiblatt-Binse
Character species Minuartia recurva (All.) Schinz & Thell.Krummblättrige Miere
Character species Oreochloa disticha (Wulfen) LinkZweizeiliges Kopfgras
Character species Pedicularis kerneri Dalla TorreKerners Läusekraut
Character species Phyteuma globulariifolium Sternb. & HoppeKugelblumen-Rapunzel
Character species Potentilla frigida Vill.Gletscher-Fingerkraut
Character species Senecio incanus L. subsp. incanusGewöhnliches Graues Greiskraut
Character species Silene suecica (Lodd.) Greuter & BurdetAlpen-Pechnelke
Less strictly linked to a specific habitat Agrostis rupestris All.Felsen-Straussgras
Less strictly linked to a specific habitat Androsace obtusifolia All.Stumpfblättriger Mannsschild
Less strictly linked to a specific habitat Carex fimbriata SchkuhrFransen-Segge
Less strictly linked to a specific habitat Euphrasia minima Schleich.Zwerg-Augentrost
Less strictly linked to a specific habitat Gentiana brachyphylla Vill.Kurzblättriger Enzian
Less strictly linked to a specific habitat Gentiana ramosa Hegetschw.Reichästiger Enzian
Less strictly linked to a specific habitat Helictotrichon versicolor (Vill.) Pilg.Bunter Wiesenhafer
Less strictly linked to a specific habitat Hieracium alpinum L.Alpen-Habichtskraut
Less strictly linked to a specific habitat Hieracium angustifolium HoppeGletscher-Habichtskraut
Less strictly linked to a specific habitat Juncus jacquinii L.Jacquins Binse
Less strictly linked to a specific habitat Leontodon helveticus MératSchweizer Milchkraut
Less strictly linked to a specific habitat Ligusticum mutellinoides Vill.Zwerg-Liebstock
Less strictly linked to a specific habitat Luzula lutea (All.) DC.Gelbe Hainsimse
Less strictly linked to a specific habitat Luzula spicata (L.) DC.Ährige Hainsimse
Less strictly linked to a specific habitat Minuartia sedoides (L.) HiernZwerg-Miere
Less strictly linked to a specific habitat Phyteuma hemisphaericum L.Halbkugelige Rapunzel
Less strictly linked to a specific habitat Polygonum viviparum L.Knöllchen-Knöterich
Less strictly linked to a specific habitat Primula daonensis (Leyb.) Leyb.Inntaler Primel
Less strictly linked to a specific habitat Primula glutinosa Jacq.Klebrige Primel
Less strictly linked to a specific habitat Pulsatilla vernalis (L.) Mill.Frühlings-Anemone
Less strictly linked to a specific habitat Ranunculus kuepferi Greuter & BurdetWegerich-Hahnenfuss
Less strictly linked to a specific habitat Sagina glabra (Willd.) FenzlKahles Mastkraut
Less strictly linked to a specific habitat Senecio halleri DandyHallers Greiskraut
Less strictly linked to a specific habitat Silene exscapa All.Silikat-Polsternelke
Less strictly linked to a specific habitat Taraxacum dissectum (Ledeb.) Ledeb.Schlitzblättriger Löwenzahn
Less strictly linked to a specific habitat Thalictrum alpinum L.Alpen-Wiesenraute
Less strictly linked to a specific habitat Veronica bellidioides L.Masslieb-Ehrenpreis

Status

Status according to the habitat priority list at the national level

National Priority K: no national priority
Need to take action 0: mesures needed
International responsibility 2: medium

Status on national Red List 2016

IUCN status:   Least concern

LC: Non menacé

Additional information

IUCN criteria: --

  • Legend
    COCollapsed
    CRCritically Endangered
    ENEndangered
    VUVulnerable
    NTNear Threatened
    LCLeast Concern

Regeneration status 2016

Regeneration class 5: 50 to 200 years