1,721,020 research outputs found
La distribuzione di briofite termofile in provincia di Varese. In: Aleffi M. (Ed.), Aspetti Briogeografici della Penisola Italiana
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Sematophyllum adnatum (Michx.) Britt. in Italia: distribuzione ed ecologia di una Bryophyta esotica
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Il genere Sphagnum (Bryophyta) in provincia di Varese: fattori ecologici condizionanti la distribuzione
No full textTwo Italian sites of interesting Grimmiaceae near the Lake of Lugano (Italian-Swiss border)
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Ecological factors affecting plant species and travertine deposition in petrifying springs from an Italian “Natura 2000” site.
No full textThis study investigated ecological factors affecting species distribution and travertine deposition in an Italian site of the ‘‘Natura 2000’’ network. Vegetation plots were located along four streams in a prealpine valley (Valganna, Lombardy, Northern Italy). Five meso-scale variables (e.g. altitude, aspect and slope) and ten microscale variables (e.g. shading, plot position and soil accumulation) were recorded for each plot; in addition,
travertine deposition was evaluated. The main floristic
gradients extracted by DCA were related to topography,
vegetation type and water availability. The occurrence of
species groups in relation to environmental variables was
analysed using Poisson regression. Amongst 15 environmental
variables and six species, the variables showing the greatest relationship to travertine deposition were the length of the waterless period and substrate slope. Photosynthetic organisms had a minor role in travertine formation, mostly restricted to substrates with a shallow slope. The maintenance of a sufficient water flow is the most effective action in conservation plans for petrifying springs
La riqualificazioni floristica delle praterie del Monte Barro nell’ambito del Progetto Life Natura “Gestione integrata di ambienti prealpino-insubrici”: riproduzione ex-situ di specie vegetali autoctone
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