Vegetation of the aquatic and marshland habitats in the Orava region, including the first records of Potametum alpini, Potametum zizii and Ranunculo-Juncetum bulbosi in the territory of Slovakia

Abstract

The vegetation of the aquatic and marshland habitats of the Orava region (north of Slovakia) was studied in 2009, using traditional phytosociological methods. Sixteen aquatic and eighteen marsh plant communities were described within 96 phytosociological relevés by using TWINSPAN with the application of the dominance principle. Three associations, Potametum alpini, Potametum zizii and Ranunculo-Juncetum bulbosi, were found as new communities for Slovakia. Myriophylletum verticillati, Potametum nodosi, Potametum graminei and Alisma gramineum community were recorded in the northernmost localities in Slovakia. Among marsh communities, Calletum palustris is very rare, both in the Orava region and in Slovakia as a whole. According to Ellenberg's indicator values (EIV), moisture was evaluated as the main ecological gradient. Plant communities are ordered along the first Detrended Correspodence Analysis (DCA) axis in a typical hydroseries (Potametea → Lemnetea → Phragmition communis → Phalaridion arundinaceae, Oenanthion aquaticae and Sparganio-Glycerion → Magnocaricion elatae). The second DCA axis was most correlated with EIV for nutrients. Among the five directly measured ecological characteristics (temperature, pH and conductivity of water, water depth, and substrate type), conductivity of water (0.44, P < 0.01) and substrate type (0.32, P < 0.05) were the statistically significant variables explaining the variability along the first DCA axis.

Syntaxonomical analysis of the riparian vegetation of thePorsuk River (Eskişehir-Kütahya/Turkey)

“…In the research area, it has been identified in shallow muddy edges of the water bodies of the Porsuk Dam environs, near Kızılinler, Kıranharmanı, and Sazak Station, between 692 and 833 m. In the study area, many species were found to cooccur with Typhetum latifoliae, but none constantly. Similar Typha latifolia-dominated stands have been recorded in the Lower Volga Valley (Golub et al, 1991), the Marmara Region and Turkey in general Leblebici, 1996, 1997), and across Europe and the Mediterranean (e.g., Minot et al, 2000;Hanáková and Duchoslav, 2002;Otáhelóvá, 2005;Stančić, 2007Stančić, , 2010Bonanno and Lo Giudice, 2009;Lastrucci et al, 2010;Hrivnák et al, 2011;Lastrucci et al, 2012;Landucci et al, 2013).…”

“…--- In comparison with the vegetation records of Seçmen and Leblebici (1997), Hanáková and Duchoslav (2002), Hrivnák (2004), Hrivnák et al (2011), Landucci et al (2013), and Golub et al (1991) After comparison of the association with the studies of Seçmen and Leblebici (1997), Minot et al (2000), Groza et al (2007), Lastrucci et al (2012), and Landucci et al (2013), it was concluded that this association, named by Venanzoni and Gigante (2000) as Galio palustris-Juncetum inflexi, is best assigned to the temporarily flooded nutrientrich riparian alluvia meadow-fringe plant communities of the Mentho longifoliae-Juncion inflexi, an alliance recently assigned to the Filipendulo ulmariae-Lotetalia uliginosae (Mucina et al, 2016), but perhaps better accommodated in Holoschoenetalia.…”

A new marsh plant community of Eleocharito palustris-Alismatetum lanceolati (Eleocharito palustris-Sagittarion sagittifoliae alliance) in Slovakia

“…Oenanthion aquaticae Hejný ex Neuhäusl 1959). For example, the association of Oenanthetum aquaticae was recently documented for the first time in Hungary [1], whereas the Batrachio circinati-Alismatetum graminei association has been known for the last few years in Slovakia [2]. A comprehensive taxonomic revision of the genus Bolboschoenus at a European scale [3] and new phytosociological data from flooded arable land enabled the description of the new association Tripleurospermo inodori-Bolboschoenetum planiculmis in Central Europe [4].…”

An Irish national vegetation classification system for aquatic river macrophytes

“…The Potamion was less widespread and found in the mature slow‐flowing rivers in Ireland. These communities are more typical of European still ponds, lakes and reservoirs (Chytrý et al., ; Hrivnák, Kochjarová, & Oťaheľová, ; Tzonev, ). The distinction between some of the Potamogeton ‐ dominated river communities was unclear and the number of plots representing some of the communities is low.…”