Title: Benchmarking plant diversity of Palaearctic grasslands
Authors : Biurrun, Idoia
Dengler, Jürgen
Pielech, R.
Steinbauer, M.J.
Marcenò, C.
Guarino, R.
Dembicz, Iwona
García-Mijangos, I.
Burascano, S.
Kapfer, J.
et. al : No
Proceedings: Abstracts : 62nd Annual Symposium of the International Association for Vegetation Science
Conference details: 62nd IAVS Symposium, Bremen, Germany, 14 ‐ 19 July 2019
Publisher / Ed. Institution : International Association for Vegetation Science (IAVS)
Issue Date: 16-Jul-2019
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : Palaearctic grassland; Plant diversity
Subject (DDC) : 577: Ecology
Abstract: Background and aim: Knowledge on typical levels of plant species richness of plant communities is required both for fundamental research and biodiversity conservation. Vegetation ecologists and practitioners need reference richness values to be able to assess the diversity value of specific plant communities. Palaearctic grasslands, which cover around 22% of the realm surface, are known to host high plant diversity at small spatial scales, some of them being the world record holders. However, there are also some very species-poor Palaearctic grasslands. In any case, maximum and minimum richness values are only a small part of the story. It is evident that for a robust knowledge on plant diversity mean values averaged using many replicates are needed. As plant diversity is strongly dependent on spatial scale, here we aim at providing benchmarks of plant richness values of different Palaearctic grassland types at eight grain sizes: 0.0001 m2, 0.001 m2, 0.01 m2, 0.1 m2, 1 m2, 10 m2, 100 m2 and 1000 m2. Previous studies have already proved that richness of vascular plants, bryophytes and lichens is not congruent across vegetation types, therefore, besides total plant diversity, we aim to assess separately vascular and non-vascular plant diversity, as well as the two components of the latter, bryophytes and lichens. Location: Palaearctic grasslands and low-scrubs. Taxa: Vascular plants, bryophytes and lichens. Methods: We will use data extracted from the GrassPlot database, which stores standardized vegetation-plot data sampled in precisely delimited plots. They make a total of 117,777 plots of the eight standard grain sizes, which will be analysed together with 1,051 additional plots provided specifically for this survey by Milan Chytrý and other colleagues. The 118,828 plots span a wide range of grassland and low scrub types, including rocky, sandy, xeric, meso-xeric, mesic, wet, Mediterranean, and alpine grasslands, as well as heathlands, thorn-scrubs, ruderal communities and azonal grasslands such as dune grasslands, salt marshes, wetlands, and rocks and screes. All these vegetation types are distributed across eight biomes throughout the Palaearctic realm.
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Conference other
URI: https://digitalcollection.zhaw.ch/handle/11475/17800
Appears in Collections:Publikationen Life Sciences und Facility Management

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