IBEROATLANTICA

Description

Short retamoid scrub occurring in deep, stoney, draining soils (moraines and colluvia) at high elevations, mostly around the timberline.

Protection

This habitat is not protected under the EU Habitat Directive.

Floristic Composition

Frequent species

Genista obtusiramea 100%, Erica arborea 70%, Avenella flexuosa 65%, Vaccinium myrtillus 60%, Calluna vulgaris 51%, Helictochloa marginata 51%, Galium saxatile 47%, Genista florida 47%, Gentiana lutea 43%, Carex asturica 40%, Hypericum richeri 38%, Agrostis capillaris 36%, Conopodium majus aggr. 33%, Juniperus communis 28%, Potentilla erecta 28%, Cytisus cantabricus aggr. 28%, Cytisus scoparius 27%, Arenaria montana 24%, Cytisus oromediterraneus 22%, Neoschischkinia truncatula 21%, Genista tridentata 18%, Teucrium scorodonia 17%, Anthoxanthum odoratum 17%, Stellaria holostea 17%, Solidago virgaurea 17%, Silene nutans 17%, Festuca rubra 16%, Erica australis 16%, Jasione montana 16%, Nardus stricta 15%, Veronica officinalis 14%, Pteridium aquilinum 13%, Anemone nemorosa 13%, Digitalis purpurea 13%, Pilosella officinarum 12%, Rumex acetosella 12%, Jasione laevis 11%, Hypochaeris radicata 10%, Erythronium dens-canis 10%, Phalacrocarpum oppositifolium 10%, Viola riviniana aggr. 9%, Asphodelus albus 8%, Luzula lactea 8%, Sorbus aucuparia 8%, Euphorbia polygalifolia 7%, Conopodium pyrenaeum 7%, Daboecia cantabrica 7%, Sedum anglicum 6%, Ceratocapnos claviculata 6%, Thymus praecox 6%, Orobanche rapum-genistae 6% view more...

Indicator species

Genista obtusiramea 1, Avenella flexuosa 0.57, Erica arborea 0.49, Vaccinium myrtillus 0.45, Helictochloa marginata 0.43, Galium saxatile 0.43, Gentiana lutea 0.41, Carex asturica 0.38, Hypericum richeri 0.35, Conopodium majus aggr. 0.32, Agrostis capillaris 0.31, Genista florida 0.31, Cytisus cantabricus aggr. 0.25, Calluna vulgaris 0.23, Arenaria montana 0.2, Cytisus oromediterraneus 0.2, Neoschischkinia truncatula 0.17, Potentilla erecta 0.16, Cytisus scoparius 0.15, Silene nutans 0.15, Anthoxanthum odoratum 0.14, Solidago virgaurea 0.14, Stellaria holostea 0.13, Veronica officinalis 0.12, Jasione montana 0.12, Festuca rubra 0.11, Anemone nemorosa 0.11, Digitalis purpurea 0.1, Nardus stricta 0.1, Juniperus communis 0.1, Rumex acetosella 0.09, Jasione laevis 0.09, Teucrium scorodonia 0.09, Erythronium dens-canis 0.09, Pilosella officinarum 0.09, Phalacrocarpum oppositifolium 0.07, Conopodium pyrenaeum 0.07, Asphodelus albus 0.05, Luzula lactea 0.05, Viola riviniana aggr. 0.05, Sedum anglicum 0.05, Ajuga pyramidalis 0.05, Hypochaeris radicata 0.05, Euphorbia polygalifolia 0.05, Orobanche rapum-genistae 0.04, Quercus petraea 0.04, Ceratocapnos claviculata 0.04, Sorbus aucuparia 0.04, Achillea millefolium 0.04, Thymelaea coridifolia aggr. 0.03 view more...

Phytosociology

Carici asturicae-Genistetum obtusirameae
Cytiso dieckii-Genistetum obtusirameae
Cytiso oromediterranei-Genistetum obtusirameae
Genistetum polygaliphyllo-obtusirameae

Relations with other habitat types

This scrub is successionally related to the birch forests of the unit T1D7, replacing them both temporarily in episodic, ephemeral clearings and almost permanently around the timberline. At lower elevations it is eventually replaced by S33n; upwards, by S23y; and, in skeletal, slaty soils, by S73y.

Regional distribution

Known occurrences and potential area of occupancy of the habitat type in the study region.

S33z Genista obtusiramea fields