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6.1.3. Grauerlen-Auenwald

Alnion incanae

Description

Phyonomy and Ecology (© Delarze & al. 2015)

In diesem Auenwaldtyp dominiert die Grauerle (Alnus incana), die geschlossene Bestände mit relativ niedrigem Kronendach bildet. Das krautige Unterholz wächst meist üppig, kann aber unter den Sedimenten der Hochwasser vorübergehend verschwinden. Im Gebirge handelt es sich vor allem um stickstoffzeigende Arten und Vertreter der Hochstaudenfluren. In den tieferen Lagen können Herde von Kratzbeeren (Rubus caesius) und Winter-Schachtelhalmen (Equisetum hyemale) den Boden bedecken. Die Erlenbestände der Auen sind an kiesige bis tonige Schwemmböden mit filternden Eigenschaften gebunden und kommen deshalb an den Ober- und Mittelläufen der Fliessgewässer vor, gelegentlich sogar an wasserzügigen Geröllhalden. Die schnellwüchsige und überflutungstolerante Grauerle ist gut an die immer wiederkehrende Auendynamik angepasst. Zum Aufkommen braucht sie Rohböden (Fortpflanzung mit Lichtkeimung).

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
Less strictly linked to a specific habitat Aconitum variegatum L.Gescheckter Eisenhut
Less strictly linked to a specific habitat Aegopodium podagraria L.Geissfuss
Less strictly linked to a specific habitat Alnus incana (L.) MoenchGrau-Erle
Less strictly linked to a specific habitat Angelica sylvestris L.Wilde Brustwurz
Less strictly linked to a specific habitat Brachypodium sylvaticum (Huds.) P. Beauv.Wald-Zwenke
Less strictly linked to a specific habitat Calamagrostis epigejos (L.) RothLand-Reitgras
Less strictly linked to a specific habitat Calamagrostis varia (Schrad.) HostBerg-Reitgras
Less strictly linked to a specific habitat Caltha palustris L.Sumpf-Dotterblume
Less strictly linked to a specific habitat Carex acutiformis Ehrh.Scharfkantige Segge
Less strictly linked to a specific habitat Chrysosplenium alternifolium L.Wechselblättriges Milzkraut
Less strictly linked to a specific habitat Cornus sanguinea L.Hartriegel
Less strictly linked to a specific habitat Deschampsia cespitosa (L.) P. Beauv.Rasen-Schmiele
Less strictly linked to a specific habitat Elymus caninus (L.) L.Hunds-Quecke
Less strictly linked to a specific habitat Equisetum hyemale L.Winter-Schachtelhalm
Less strictly linked to a specific habitat Equisetum pratense Ehrh.Wiesen-Schachtelhalm
Less strictly linked to a specific habitat Equisetum sylvaticum L.Wald-Schachtelhalm
Less strictly linked to a specific habitat Euonymus europaeus L.Gemeines Pfaffenhütchen
Less strictly linked to a specific habitat Festuca gigantea (L.) Vill.Riesen-Schwingel
Less strictly linked to a specific habitat Fraxinus excelsior L.Gemeine Esche
Less strictly linked to a specific habitat Humulus lupulus L.Hopfen
Less strictly linked to a specific habitat Listera ovata (L.) R. Br.Grosses Zweiblatt
Less strictly linked to a specific habitat Lysimachia vulgaris L.Gemeiner Gilbweiderich
Less strictly linked to a specific habitat Malus sylvestris (L.) Mill.Holz-Apfelbaum
Less strictly linked to a specific habitat Petasites albus (L.) Gaertn.Weisse Pestwurz
Less strictly linked to a specific habitat Petasites hybridus (L.) G. Gaertn. & al.Rote Pestwurz
Less strictly linked to a specific habitat Populus alba L.Silber-Pappel
Less strictly linked to a specific habitat Populus nigra L. subsp. nigraGewöhnliche Schwarz-Pappel
Less strictly linked to a specific habitat Prunus padus L. subsp. padusGewöhnliche Traubenkirsche
Less strictly linked to a specific habitat Rubus caesius L.Blaue Brombeere
Less strictly linked to a specific habitat Salix appendiculata Vill.Grossblättrige Weide
Less strictly linked to a specific habitat Salix myrsinifolia Salisb.Schwarzwerdende Weide
Less strictly linked to a specific habitat Salix pentandra L.Lorbeer-Weide
Less strictly linked to a specific habitat Salix purpurea L.Purpur-Weide
Less strictly linked to a specific habitat Solidago gigantea AitonNSpätblühende Goldrute
Less strictly linked to a specific habitat Stachys sylvatica L.Wald-Ziest
Less strictly linked to a specific habitat Stellaria nemorum L. subsp. nemorumGewöhnliche Hain-Sternmiere
Less strictly linked to a specific habitat Ulmus glabra Huds.Berg-Ulme
Less strictly linked to a specific habitat Urtica dioica L.Grosse Brennnessel
Less strictly linked to a specific habitat Viola biflora L.Gelbes Berg-Veilchen

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 4: 25 to 50 years