An approach to the phytosociology of scrub in deforested areas in the west of Tres Cantos, Madrid, Spain

The scrub vegetation in the Tres Cantos wilderness area to the west corresponds fundamentally to substitution stages of the Junipero oxycedry-Quercetum rotundifoliae climax forest of dry upper Meso-Mediterranean bioclimate on acid soils that, in the past, must have continued with the Pardo vegetation. The substitution stages are very fragmented, overlapping and established on a mosaic of land dedicated to grazing and crops that are now abandoned. Cytiso scoparii-Retametum sphaerocarpae clearly predominates over Rosmarino-Cistetum ladaniferi. In the first case, both Retama sphaerocarpa and Cytisus scoparius are very visible and in the second case Cistus ladanifer is almost absent, although in the Guadarrama areas, Juniperos oxycedrus is much more present than corresponds to the association with Retama sphaerocarpa.

We recognized in the territory 26 of the 47 taxa corresponding to inventories carried out in related territories (55.3%) in the case of Cytiso scoparii-Retametum sphaerocarpae. https://www.inaturalist.org/observations/111837179

Retama sphaerocarpa (L.) Boiss.
Cytisus scoparius (L.) Link
Genista hirsuta Vahl
Quercus rotundifolia Lam.
Crataegus monogyna Jacq.
Cistus ladanifer L. [sub]
Asparagus acutifolius L.
Dorycnium pentaphyllum Scop.
Lavandula pedunculata Cav.
Thymus masticina L.
Jasion gr. montana L. [sub]
Thapsia villosa L.
Carlina corymbosa L. subsp. hispanica (Lam.) O. Bolòs & Vigo [sub]
Andryala integrifolia L.
Stipa lagascae Roem. & Schult.
Dactylis glomerata L. subsp. hispanica (Roth) Nyman [sub]
Chondrilla juncea L.
Thymus zygis Loefl. ex l
Santolina rosmarinifolia L.
Juniperus oxycedrus L.
Corynephorus canescens (L.) P. Beauv.
Agrostis castellana Boiss. & Reut.
Lavandula pedunculata Cav. [sub]
Helichrysum stoechas (L.) Moench
Artemisia campestris L. subsp. glutinosa (J. Gay ex DC.) Batt. in Batt. & Work. [sub]
Rosmarinus officinalis L.

And 32 of the 43 taxa cited in the case of Rosmarino-Cistetum ladaniferi (74.4%).

Cistus ladanifer L. [sub]
Juniperus oxycedrus L.
Quercus rotundifolia Lam.
Rosmarinus officinalis L.
Daphne gnidium L.
Cytisus scoparius (L.) Link
Genista hirsuta Vahl
Lavandula pedunculata Cav. [sub]
Thymus zygis Loefl. ex l
Thymus masticina L.
Celtica gigantea (Link) J.M. Vazquez & Barkworth [sub]
Helichrysum stoechas (L.) Moench [sub]
Retama sphaerocarpa (L.) Boiss.
Halimium umbellatum (L.) Spach subsp. viscosum (Willk.) O. Bolòs & Vigo [sub]
Dorycnium pentaphyllum Scop.
Santolina rosmarinifolia L.
Tuberaria guttata (L.) Fourr.
Corynephorus canescens (L.) P. Beauv.
Agrostis castellana Boiss. & Reut.
Dactylis glomerata L. subsp. hispanica (Roth) Nyman [sub]
Thapsia villosa L.
Jasione sessiliflora Boiss. & Reut. [sub]
Andryala integrifolia L.
Carlina corymbosa L.
Hymenocarpos lotoides (L.) Vis. [sub]
Stipa lagascae Roem. & Schult.
Vulpia myuros (L.) C.C. Gmel.
Eryngium campestre L.
Centranthus calcitrapae (L.) Dufr.
Centaurea ornata Willd.
Artemisia campestris L. subsp. glutinosa (J. Gay ex DC.) Batt. in Batt. & Work. [sub]
Jasione montana L. subsp. mountain

Given that areas with decapitated and sandy soils are frequent and are established between areas of more developed soil, it is likely that both associations have the possibility of being re-established in the future.

The climax of Junipero oxycedry-Quercetum rotundifoliae, since there are holm oaks and junipers loose or in small groups, could also be established if future climatic conditions allow it.

Sources:

Gavilan, R.G.; Vilches de la Serna, B.; Fernández-González, F. 2011 Syntaxonomical review of Cytisetea scopario-striati communities in central Spain Lazaroa 32

Costa, M. 1974 Phytosociological study of the thickets of the province of Madrid. Annals Inst. Bot. Cavanilles, 31(1)

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Αναρτήθηκε από angel_fernandez_cancio angel_fernandez_cancio, Απρίλιος 17, 2022 0830 ΜΜ

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