Vegetacija zidov v starih kraljevih rudarskih mestih v srednji Slovaški

During May, 2013, the vegetation on city walls has been studied in five old royal mining towns of Central Slovakia (Banská Belá, Banská Štiavnica, Kremnica, Nová Baňa, and Pukanec). In the four last-named towns, phytocoenological material was recorded according to the Braun-Blanquet method, providing 41 relevés. Analysis of data (Twinspan , DCA) grouped the relevés into four clusters: ass. Cymbalarietum muralis, Corydalidetum luteae, Asplenietum rutae-murarie-trichomanis, and the most hemerobic community dominated by Chelidonium majus. All communities are generally rather heterogeneous, with a large range of number of species and with frequent participation of accessory plants. In the observed localities, 22 opilithic mosses and 2 liverworts were recorded: the most common species appears Encalypta streptocarpa, Homalothecium sericeum, Tortula muralis, Hypnum cupressiforme, Schistidium apocarpum agg., and Bryum caespiticium.Maja 2013 smo vzorčili vegetacijo mestnih zidov v petih starih kraljevih rudarskih mestih v srednji Slovaški (Banská Belá, Banská Štiavnica, Kremnica, Nová Baňa in Pukanec). V zadnjih štirh mestih smo naredili 41 vegetacijskih popisov po Braun-Blanquetovi metodi. Z analizo podatkov (Twinspan , DCA) smo dobili štiri klastre: Cymbalarietum muralis, Corydalidetum luteae, Asplenietum rutae-murarie-trichomanis in združbo z največjo hemerobijo v kateri dominira vrsta Chelidonium majus. Vse združbe so splošno zelo raznolike z velikim spektrom vrst v katerih so zelo pogoste slučajne vrste. Na proučevanih lokacijah smo zabeležili 22 epilitskih mahov and 2 jeternjaka. Najbolj pogoste vrste so: Encalypta streptocarpa, Homalothecium sericeum, Tortula muralis, Hypnum cupressiforme, Schistidium apocarpum agg. in Bryum caespiticium

Summit vascular flora of Serra de São José, Minas Gerais, Brazil

The campos rupestres form a mosaic of rocky savannas concentrated mainly along the Espinhaço chain, on the Brazilian shield. Though the Serra de São José lies over 100 km to the south of the Espinhaço chain, the campo rupestre flora of this small range harbors several endemic plant taxa. The provided checklist is the result of two decades of floristic research complemented with data from herbaria and literature. The flora is compared with the results of several other pertinent surveys. A total of 1,144 vascular plant species, representing 50.3 species/km2, were documented to date in the São José range, representing a species-richness per unit area over five times greater than other known campo rupestre floras. The most species-rich families were the Asteraceae (126 species), Orchidaceae (106), Melastomataceae (63), Leguminosae (60), Cyperaceae (45), Poaceae (41), Rubiaceae (37), Myrtaceae (28), Bromeliaceae (27), Eriocaulaceae (23), Lamiaceae (23), and Malpighiaceae (22)

Can campo rupestre vegetation be floristically delimited based on vascular plant genera? Plant Ecology 207

Abstract A number of floristic and vegetation studies apply the terms campo rupestre, campo de altitude (or Brazilian pa´ramo), and Tepui to neotropical azonal outcrop and montane vegetation. All of these are known to harbor considerable numbers of endemic plant species and to share several genera. In order to determine whether currently known combinations of vascular plant genera could help circumscribe and distinguish these vegetation types, we selected 25 floras which did not exclude herbs and compiled them into a single database. We then compared the Sørensen similarities of the genusassemblages using the numbers of native species in the resulting 1945 genera by multivariate analysis. We found that the circumscription of campo rupestre and other Neotropical outcrop vegetation types may not rely exclusively on a combination of genera

Vliv hospodářských zásahů na změnu v biologické rozmanitosti ve zvláště chráněných územích:Monitoring lesní a travinné vegetace v CHKO a BR Křivoklátsko

Předmětem biomonitoringu v Chráněné krajinné oblasti a Biosférické rezervaci Křivoklátsko byla v roce 2001 dřevinná i bylinná složka lesních společenstev (subxerofilní doubravy asociace Potentillo albae-Quercetum, dubohabřiny asociace Melampyro nemorosi-Carpinetum a květnaté bučiny asociace Tilio cordatae-Fagetum). Dále bylinná složka lučního společenstva s kriticky ohroženým taxonem Gentianella baltica a dalšími vzácnými taxony ČR jako Orchis morio, Orchis ustulata, Phyteuma orbiculare a Primula veris. Ve třech klimaxových lesních společenstvech bylo s ohledem na přezvěření oblasti a eutrofizaci území zjišťováno kvalitativní a kvantitativní složení bylinného, keřového i stromového patra na oplocených a kontrolních plochách. Na travnatých svazích potoka Klíčavy bylo provedeno fytocenologické snímkování lučních porostů se zvláštním zřetelem na četnost populací vzácných a ohrožených taxonů. Na téže lokalitě byl sledován průběh řízené sukcese na místě bývalého pole

Suha travišča v hribovju Slovenský kras (Slovaška) in Aggteleki-karszt (Madžarska) – primerjava dveh načinov klasifikacije

The paper brings numerical classification of 48 new phytosociological relevés of dry grassland vegetation from the Slovenský kras Mts and the Aggteleki-karszt Mts located on the border between Slovakia and Hungary (Central Europe). We performed a comparison of two classification approaches (an unsupervised method – modified TWINSPAN, and a supervised approach – electronic expert system based on formal definitions of associations), which were applied on the same dataset. Four associations were distinguished: Campanulo divergentiformis-Festucetum pallentis Zólyomi (1936) 1966, Poo badensis-Caricetum humilis (Dostál 1933) Soó ex Michálková in Janišová et al. 2007, Alysso heterophylli-Festucetum valesiacae (Dostál 1933) Kliment in Kliment et al. 2000 and Festuco rupicolae-Caricetum humilis Klika 1939. A newly recorded stand of the rare Stipetum tirsae Meusel 1938 association is characterised. What is more, we established a neotype of the Alysso heterophylli-Festucetum valesiacae association.V članku je predstavljena numerična klasifikacija 48 novih fitocenoloških popisov vegetacije suhih travnikov iz hribovja Slovenský kras in Aggteleki-karszt na meji med Slovaško in Madžarsko (srednja Evropa). Naredili smo primerjavo dveh klasifikacijskih metod (nenadzorovano metodo – modificirani TWINSPAN, in nadzorovano metodo – elektronski ekspertni sistem, ki temelji na formalnih definicijah asociacij), ki smo ju opravili na istem podatkovnem nizu. Ločili smo štiri asociacije: Campanulo divergentiformis-Festucetum pallentis Zólyomi (1936) 1966, Poo badensis-Caricetum humilis (Dostál 1933) Soó ex Michálková in Janišová et al. 2007, Alysso heterophylli- Festucetum valesiacae (Dostál 1933) Kliment in Kliment et al. 2000 in Festuco rupicolae-Caricetum humilis Klika 1939. Označili smo tudi novo nahajališče redke asociacije Stipetum tirsae Meusel 1938. Prav tako smo definirali neotip asociacije Alysso heterophylli-Festucetum valesiacae