Naslov
Towards a revised classification of the Pontic- Pannonian steppe grasslands

Autori
Willner, Wolfgang ; Kuzemko, Anna ; Bauer, Norbert ; Becker, Thomas ; Biţă-Nicolae, Claudia ; Botta-Dukát, Zoltán ; Chytrý, Milan ; Dengler, Jürgen ; Igić, Ruzica ; Janišová, Monika ; Kącki, Zygmunt ; Korotchenko, Iryna ; Krstivojević, Mirjana ; Rédei, Tamás ; Ruprecht, Eszter ; Schratt-Ehrendorfer, Luise ; Semenishchenkov, Yuri ; Stančić, Zvjezdana ; Vashenyak, Yulia ; Vynokurov, Denis

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Biodiversity & Vegetation: Patterns, Processes, Conservation / Mucina, Ladislav ; Price, Jodi N. ; Kalwij, Jesse M. - Perth : Kwongan Foundation, 2014, 206-206

ISBN
978-0-9584766-5-2

Skup
57st Annual Symposium of the International Association for Vegetation Science

Mjesto i datum
Perth, Australija, 01.09.2014. - 05.09.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
dry grasslands; Europe

Sažetak
Background & Aims: Steppe grasslands contribute a major part to the overall biodiversity of Central and Eastern Europe. However, the area of species-rich grasslands has strongly declined during the last century. A consistent supra-national classification of these habitats is urgently needed as a basis for their effective conservation and monitoring. Material & Methods: We studied main phytosociological patterns within the Pontic- Pannonian steppe grasslands using a large dataset of vegetation plots covering the whole Carpathian Basin (E Austria, Moravia, Slovakia, Hungary, Romania, N Croatia and N Serbia) as well as Ukraine and adjacent regions in S Poland and SW Russia (Bryansk region). Altogether 43 706 relevés from 11 countries were gathered. Species taxonomy and nomenclature was unified according to the Euro+Med Checklist (www.emplantbase. org). Critical species were merged to aggregates. From this initial data set, we selected all relevés with the presence of at least one (of 143 pre-defined) diagnostic species of the target vegetation types (steppe meadows, meadow steppes and grass steppes), of rocky steppes or of Pannonian sand steppes. Thus, we included all units traditionally included or closely related to the Festuco- Brometea class. Relevés with a plot size <9 m² or >100 m², and relevés with a shrub or tree layer covering >10% were excluded. To avoid bias due to oversampling of some areas, we applied a geographically stratified random resampling. The resampled data set (17 993 relevés) was classified using TWINSPAN. Main Results & Interpretations: The classes of the Molinio-Arrhenatheretea, Nardetea, Festuco-Brometea and Koelerio-Corynephoretea were well separated in the classification. The position of the Festucetalia vaginatae (Pontic- Pannonian sandy steppes) within the Koelerio- Corynephoretea was confirmed. The Agrostion vinealis (steppic meadows on intermittently wet floodplains) was grouped together with the Deschampsion caespitosae, while the meadow steppes classified as the Trifolion montani were closely related to the Brometalia erecti. The delimitation between the Festucion valesiacae and the Stipion lessingianae was reproduced only partly and needs further evaluation. Outlook: As next step, a detailed classification of the Brometalia erecti (incl. the Trifolion montani) and the Festucetalia valesiacae at the association level will be elaborated.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA