Periphytic
acidophilous taxa (Eunotia spp.) appear with a relative abundance over 5% 3600 cal.
This layer accumulates because the acidity of the granite rock and the
acidophilous nature of the lichen combine to slow down the decomposition of the dead plant matter.
The oxidation of magnanous ions under acidic conditions by an
acidophilous actinomycetes from acid soil.
Cluster A (samples 3, 4, 19 and 20) represents thermophilous beech forests, while cluster B includes four samples (5, 6, 14 and 15) from
acidophilous beech forests and one ravine forests (sample 24).
Oocytes III (oIII) are characterized by the presence of yolk vesicles in the cytoplasm and are slightly
acidophilous in routine preparations (Figures 4).
According to these authors, this suballiance should include the pioneer,
acidophilous, oligotrophic communities of the Bromion erecti on marly-clayey and arenaceous substrata; it was distinguished from the Polygalo-Bromenion BIONDI et al.
Ecology:
Acidophilous to neutro-acidophilous, eu-hyperoceanic, thermo to mesomediterranean, dry to humid bioclimatic belts.
legionensis preferentially lives in hay meadows, semi-flooded meadows and intensely grazed
acidophilous grasslands ("nardetas") in the Supra- and Orotemperate belts, above all in the alliances Arrhenatherion and Nardion (Llamas & Andres, 1983; Rodriguez-Rojo & al., 2012; Paz & al., 2011).
on the other hand, set 16-18 differs in the presence of
acidophilous and oligotrophic species located on higher-altitude sites (Parnassia palustris, Saxifraga aizoides, Valeriana tripteris).
These
acidophilous species are frequently recorded in the climatophilous oak woods with which they usually make lateral contact, but they rarely occur or are absent in the riverside ash tree forests.
In fact the syntaxonomy of the
acidophilous beech forests apperars to be somewhat more complicated and probably be referred to the classic classification scheme which is widely used in a large part of Europe and which separates, at alliance, order or class level, basiphilous beech forests from the
acidophilous forest mainly on the basis of soil pH values (Ellemberg & Klotzli, 1974; Diersckhe, 1990; Theurillat & al., 1994; Ellemberg, 1996; Rivas-Martinez & al., 2001; WiLLNER, 2002; Rodriguez Guitian & al., 2009).
Cluster A includes
acidophilous and sub-acidophilous grasslands, while cluster B comprises basophilous pastures and dry grasslands on pioneer soils.
In particular, they (largely) lack many otherwise widespread Festuco-Brometea species, such as Eryngium campestre, Euphorbia cyparissias, Koeleria pyramidata, Prunella grandiflora, Teucrium chamaedrys, while several slightly
acidophilous graminoids and mosses become more frequent to the north (e.g.
