Contributo alla conoscenza della vegetazione del fiume Pesa (Toscana, Italia centrale).

Studia Botanica 0211-9714 01/2012; 29:105-143.

ABSTRACT The hygrophilous vegetation of Pesa river in Tuscany (Central Italy) is described according to the phytosociological method. The survey shows the presence of 23 vegetation types belonging to the following classes: Potametea, Bidentetea tripartitae, Isoëto-Nanojuncetea, Phragmito-Magnocaricetea, Artemisietea vulgaris, Galio-Urticetea, Molinio-Arrhenatheretea, Salici purpureae-Populetea nigrae. In spite of the anthropic alteration observed along several stretches of the river, the study highlights the presence of high valuable vegetation types referable to 10 habitat of European Community importance.

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    Thaiszia Journal of Botany 01/2002; 12(2):137-160.
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    ABSTRACT: This paper presents a method of assessing the state of a river in relation tc macrophytes. Macrophytes can potentially grow in quantity in most lowland and some hill streams, and can be used tc assess those types of pollution which affect these larger plants. The criteria considered important are species diversity, vegetation cover, trophic status, pollution tolerance and physical damage. These are assessed against the vegetation expected in a similar clean stream under traditional management. An eight point index is giver, for this purpose.
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    ABSTRACT: Central European inland vegetation dominated by Bolboschoenus species was newly classified, based on current knowledge of taxonomic differentiation within the Bolboschoenus maritimus-complex. Altogether 225 phytosociological relevés from the Czech Republic, Slovakia, Poland, Germany and Austria were analysed. Bolboschoenus-dominated vegetation is found in a broad range of both freshwater and saline habitats. Individual Bolboschoenus species grow in different habitats with different species composition. The freshwater vegetation, dominated by B. yagara, B. laticarpus and B. planiculmis, reflects ecological differentiation of these species from base-poor to alkaline substrates, and from littoral habitats to temporarily flooded depressions. The following freshwater associations were distinguished: Phalarido arundinaceae-Bolboschoenetum laticarpi Passarge 1999 corr. Krumbiegel 2006, concentrated in large river floodplains, Bolboschoenetum yagarae Eggler 1933 corr. Hroudová et al. 2009, typical of the littoral zone of fishponds on base-poor bedrocks, and Tripleurospermo inodori-Bolboschoenetum planiculmis Hroudová et al. 2009, occurring mainly in temporarily flooded depressions on arable land. Saline vegetation is dominated by Bolboschoenus maritimus s. str. The alliance Cirsio brachycephali-Bolboschoenion compacti (Passarge 1978) Mucina in Balátová-Tuláčková et al. 1993, previously interpreted as vegetation of inland saline marshes, actually relates to freshwater Bolboschoenus vegetation. Therefore a new alliance, Meliloto dentati-Bolboschoenion maritimi Hroudová et al. 2009, is proposed here to include saline reed vegetation of continental areas.
    Phytocoenologia 05/2009; 39(2):205-215. · 0.39 Impact Factor


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Jun 1, 2014