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4.3.4. Windkantenrasen (Nacktriedrasen)

Elynion

Description

Phyonomy and Ecology (© Delarze & al. 2015)

Das hartstengelige, rasenbildende Nacktried (Elyna myosuroides) fällt durch seine leuchtend braune Farbe auf und prägt das Bild dieses Lebensraums. Zwischen dem Nacktried wachsen verschiedene kleinwüchsige Pflanzenarten und Erdflechten. Das auf Windkanten spezialisierte Artengefüge besiedelt nur kleinräumige, windexponierte Flecken inmitten grösserer alpiner Rasenflächen. Auf solchen Kuppen herrschen gewissermassen kontinentale Verhältnisse, da sich hier im Winter keine schützende Schneedecke aufbauen kann. Den Standort kennzeichnen zeitweise extrem tiefe Temperaturen und austrocknende, oft erosiv wirkende Winde. Elyna ist eine der kälteresistenteren Arten unserer Flora. Der Nacktriedrasen vermag keine völlig entblösste Kuppen zu besiedeln. Es muss sich bereits vorher, in Zeiten weniger extremer Bedingungen, ein feinerdiges, basenreiches Substrat aufgebaut haben. Der dichte Wurzelfilz des Nacktriedes verlangsamt die Bodenerosion auf wirksame Art.

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 brevis (Hegetschw.) Ces.Kurzstängeliger Mannsschild
Character species Antennaria carpatica (Wahlenb.) Bluff & Fingerh.Karpaten-Katzenpfötchen
Character species Arabis ciliata Clairv.Bewimperte Gänsekresse
Character species Cerastium alpinum L.Alpen-Hornkraut
Character species Dianthus glacialis HaenkeGletscher-Nelke
Character species Draba siliquosa M. Bieb.Kärntner Felsenblümchen
Character species Elyna myosuroides (Vill.) FritschNacktried
Character species Gentiana prostrata HaenkeNiederliegender Enzian
Character species Gentiana tenella Rottb.Zarter Enzian
Character species Potentilla nivea L.Schneeweisses Fingerkraut
Character species Saussurea alpina (L.) DC. subsp. alpinaGewöhnliche Alpenscharte
Less strictly linked to a specific habitat Agrostis alpina Scop.Alpen-Straussgras
Less strictly linked to a specific habitat Arenaria ciliata L.Wimper-Sandkraut
Less strictly linked to a specific habitat Aster alpinus L.Alpen-Aster
Less strictly linked to a specific habitat Carex atrata L. subsp. atrataGewöhnliche Trauer-Segge
Less strictly linked to a specific habitat Carex curvula subsp. rosae GilomenRosas Krumm-Segge
Less strictly linked to a specific habitat Carex ericetorum PollichHeide-Segge
Less strictly linked to a specific habitat Carex rupestris All.Felsen-Segge
Less strictly linked to a specific habitat Chamorchis alpina (L.) Rich.Zwergorchis
Less strictly linked to a specific habitat Draba aizoides L.Immergrünes Felsenblümchen
Less strictly linked to a specific habitat Dryas octopetala L.Silberwurz
Less strictly linked to a specific habitat Erigeron neglectus A. Kern.Verkanntes Berufkraut
Less strictly linked to a specific habitat Erigeron uniflorus L.Einköpfiges Berufkraut
Less strictly linked to a specific habitat Gentiana nivalis L.Schnee-Enzian
Less strictly linked to a specific habitat Helictotrichon versicolor (Vill.) Pilg.Bunter Wiesenhafer
Less strictly linked to a specific habitat Juncus monanthos Jacq.Einblütige Binse
Less strictly linked to a specific habitat Leontopodium alpinum Cass.Edelweiss
Less strictly linked to a specific habitat Ligusticum mutellinoides Vill.Zwerg-Liebstock
Less strictly linked to a specific habitat Lloydia serotina (L.) Rchb.Faltenlilie
Less strictly linked to a specific habitat Minuartia verna (L.) HiernFrühlings-Miere
Less strictly linked to a specific habitat Oxytropis campestris (L.) DC.Alpen-Spitzkiel
Less strictly linked to a specific habitat Oxytropis campestris (L.) DC.Alpen-Spitzkiel
Less strictly linked to a specific habitat Oxytropis halleri W. D. J. Koch subsp. halleriGewöhnlicher Haller-Spitzkiel
Less strictly linked to a specific habitat Oxytropis lapponica (Wahlenb.) J. GayLappländer Spitzkiel

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 1: weak

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

Legal protection (NCHO appendix 1)

Natural habitat worthy of protection

Regeneration status 2016

Regeneration class 5: 50 to 200 years