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2.2.5. Schwemmufervegetation alpiner Wildbäche

Caricion bicolori-atrofuscae

Description

Phyonomy and Ecology (© Delarze & al. 2015)

Das Caricion bicolori-atrofuscae besteht aus verstreuten alpinen Pionierbeständen von Binsen und Kleinseggen, die auf sandigen Schwemmufern von Gletscherbächen, seltener auch auf feuchten Moränenunterlagen gedeihen. Das Substrat enthält wenig organisches Material, das tränkende Wasser ist kalkarm, häufig aber alkalisch (pH 7 bis 8). Diese Einheit erträgt keine Temperaturen über 25 °C. Deshalb kommt der Verband ausschliesslich in den Alpen oberhalb von 1600 m vor, auch wenn einzelne Vertreter entlang von Bergbächen noch um 1200 m siedeln können. Eine regelmässige mechanische Geländeumgestaltung scheint für den Fortbestand entscheidend zu sein (Auendynamik Kryoturbation).

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 Carex atrofusca SchkuhrSchwarzrote Segge
Character species Carex bicolor All.Zweifarbige Segge
Character species Carex maritima GunnerusBinsenblättrige Segge
Character species Carex microglochin Wahlenb.Spitzen-Segge
Character species Carex vaginata TauschScheiden-Segge
Character species Juncus arcticus Willd.Arktische Binse
Character species Juncus castaneus Sm.Kastanien-Binse
Character species Kobresia simpliciuscula (Wahlenb.) Mack.Schuppenried
Character species Trichophorum pumilum (Vahl) Schinz & Thell.Zwerg-Haarbinse
Less strictly linked to a specific habitat Bartsia alpina L.Alpenhelm
Less strictly linked to a specific habitat Carex capillaris L.Haarstielige Segge
Less strictly linked to a specific habitat Dactylorhiza lapponica (Hartm.) SoóLappländische Fingerwurz
Less strictly linked to a specific habitat Eleocharis quinqueflora (Hartmann) O. SchwarzFünfblütige Sumpfbinse
Less strictly linked to a specific habitat Equisetum variegatum Schleich.Bunter Schachtelhalm
Less strictly linked to a specific habitat Juncus alpinoarticulatus ChaixAlpen-Binse
Less strictly linked to a specific habitat Juncus triglumis L.Dreiblütige Binse
Less strictly linked to a specific habitat Lomatogonium carinthiacum (Wulfen) Rchb.Kärntner Saumnarbe
Less strictly linked to a specific habitat Selaginella selaginoides (L.) Schrank & Mart.Dorniger Moosfarn
Less strictly linked to a specific habitat Tofieldia pusilla (Michx.) Pers.Kleine Simsenlilie

Status

Status according to the habitat priority list at the national level

National Priority 2: high national priority
Need to take action 2:
International responsibility 2: medium

Status on national Red List 2016

IUCN status:   Vulnerable

LC: Non menacé

Additional information

IUCN criteria: A1

  • 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