Search results for "phytosociology"
showing 10 items of 85 documents
Scirpetum radicantis Hejný in Hejný et Husák 1978 em. Zahlh. 1979, a plant association new to Poland
2011
The paper presents a rush community new to Poland - <em>Scirpetum radicantis </em>Hejny in Hejny et Husak 1978 em. Zahlh. 1979, belonging to the <em>Phragmition </em>alliance. It was discovered in fishponds near Olesno in Silesia (SW Poland). The floristic composition and the ecological requirements of this association are presented in the paper. <em>Scirpetum radicantis </em>is considered to be a very rare and endangered plant community in Europe.
Utricularietum australis Th. Müller et Görs 1960 in Poland
2011
The paper presents the distribution, floristic composition and ecological requirements of the pleustonic plant community <em>Utricularietum australis</em> Th. Müller et Görs 1960 in Poland. The association was classifield to the Lemnetea minoris class. <em>Utricularietum australis</em> is considered to be a rare and endangered plant community in Europe.
Nymphaeetum albae Vollmar 1947 em. Oberd. in Oberd. et al. 1967, a plant association new to Poland
2011
The paper presents a water plant community new to Poland - <em>Nymphaeetum albae</em> Vollmar 1947 em. Oberd. in Oberd. et al. 1967, belonging to the i class. It was discovered in fishponds in Pokój near Namysłów, Lasowice Małe near Kluczbork and small ponds in Staniszcze Małe near Opole in Silesia (SW Poland). Floristic composition and ecological requirements of this association are presented in the paper. <em>Nymphaeetum albae</em> is considered to be a rare and endangered plant community in Europe.
The Sicilian taxa of Genista sect. Voglera and their phytosociological framework
2012
The phytosociological role of taxa of Genista sect. Voglera in the vegetation context of Sicily is here examined. It was carried out on plant communities characterised by the Sicilian endemics G. aristata, G. madoniensis and G. cupanii. These taxa and their floristic settlement have been examined from the biogeographical point of view. Basing on our results, the popu- lations of G. madoniensis are to be referred to a new association named Cisto salvifolii- Genistetum madoniensis, ascribed to the class Cisto-Lavanduletea. Multivariate analysis shows a clear ecological differentiation of G. madoniensis with respect to the other Sicilian species. Instead, its habitus and ecology are closer to …
Contribution to the phytosociological characterization of the forest vegetation of the Sicani Mountains (inland of north-western Sicily).
2016
The results of a phytosociological survey on the main forest vegetation aspects of the Sicani Mountains (inland of north-western Sicily), in turn included in the homonymous Regional Park recently established, are presented. This expansive territory (43,687 hectares), located between the Agrigento and Palermo provinces, is mainly composed by carbonate and silico-carbonate formations of the Sicani Units, whose highest peaks are represented by Mount Cammarata (1578 m a.s.l.), Mount delle Rose (1436 m), Pizzo Cangialoso (1420 m) and Mount Pernice (1393 m). Under the bioclimatic aspect, the area falls within the thermo- and supramediterranean belts, with ombrotype ranging from upper dry (annual …
Potametum alpini Podbielkowski 1967 w starorzeczach południowo-zachodniej Polski
2018
The paper presents the distribution and habitat conditions of Potametum alpini communities (class Potametea) in oxbow lakes of south-western Poland. A study done in 2000–2015 identified 11 localities of this community in oxbow lakes. The threats to Potametum alpini in south-western Poland include changes in the levels and physicochemistry of the water.
Zespół rdestnicy wydłużonej Potametum praelongi Sauer 1937 w rezerwacie Smolnik na Śląsku Opolskim
2018
Na terenie rezerwatu przyrody Smolnik na Śląsku Opolskim fitocenozy zespołu rdestnicy wydłużonej Potametum praelongi zostały stwierdzone podczas badań geobotanicznych w 2015 r. – współrzędne geograficzne 50°83'97,62'' N, 18°24'59,79'' E. Dotychczas zespół ten nie był notowany na obszarze tego rezerwatu. W Polsce należy do bardzo rzadko notowanych zbiorowisk. W rezerwacie Smolnik płaty tego zespołu wykształciły się w wodzie o głębokości 150 – 200 cm, o pH 7,4. W większości z nich ma budowę dwuwarstwową, rzadziej jednowarstwową. Zespół ten zajmuje powierzchnie, sięgające maksymalnie 200 – 300 m2. Notowano w nich od 5 do 7, średnio 6 gatunków. Łącznie w jego fitocenozach zanotowano 8 gatunków …
The role of Characeae in the communities of the vegetation class Potametea
2018
The stonewort vegetation is commonly classified into the phytosociological class Charetea fragilis F. Fukarek ex Krausch 1964; however, the Characeae are not exclusively found in vegetation stands ascribed to this class but also in other habitat types. In our preliminary investigations, we draw the attention to the relationship between the classes Charetea fragilis and Potametea pectinati Klika in Klika & Novák 1941 in some Sicilian biotopes. In some cases, the Charetea vegetation is ecologically and spatially distinct, although close, from that referable to the Potametea. In some other cases, one or more species of Characeae are structurally intrinsic to the vegetation of Potametea: on…
The Olea europaea L. var. sylvestris (Mill.) Lehr. forests in the Mediterranean area
2019
This paper examines the forest communities dominated by Olea europaea L. var. sylvestris (Mill.) Lehr. that have been described up until now in the Mediterranean Region (including other isolated extrazonal areas in the northwestern Iberian Peninsula and in Northern Turkey) as more or less evolved aspects of woods, microwoods and high maquis that principally tend to make up climacic and edapho-climacic “series heads”. These forma- tions maintain a significant large-scale distributive potential within the infra- and thermomediterranean bioclimate belts (with a few penetrations into the mesomediterranean) with a dry-subhumid (and sometimes humid) ombrotype; however, they are currently quite ra…
Phytosociological and distributional researches on the grasslands of the class Lygeo-Stipetea in western Sicily.
2009
The thermo and meso-xerophilous pseudo-steppic vegetation is widespread in the driest areas of the Mediterranean Region and is primarily referred at the class Lygeo-Stipetea. This sintaxon includes communities dominated by several hemicryptophytes, which are also associated to some geophytes and therophytes. In Sicily this vegetation is distributed from sea level to 1300-1400 m, on different substrates (limestone, gypsum, schists, calcarenites, conglomerates, etc.), within the thermo and mesomediterranean belt dry to subhumid. Principally, are secondary grasslands used for grazing, localized on previously deforested areas, where the periodic burnings play a fundamental role in maintaining t…