Abstract
Along rivers sand is deposited and sandy levees develop. In the Netherlands two
grassland associations are distinguished that are characteristic of dry, relatively
nutrient poor, calcium containing, sandy levees, the Medicagini-Avenetum
pubescentis De Leeuw in Braun Blanquet et Moor 1938, Sedo-Thymetum
pulegioides Doing ex Weeda, Doing et Schamine and Festuco-Thymetum serpylii
Tuxen 1937. Their syntaxonomic position is still partly disputed (Sedo-Cerastion,
Meso-Bromion, Plantagini-Festucion). According to our historical research,
nowadays the quality of these grasslands changed and they strongly declined
(surface decrease more than 90% in last decades) and are rare and threatened. In
the habitat directives dry fluviatile grasslands are designated as habitat types with
priority. In 2010 we started a research into the ecological amplitude of fluviatile
grassland communities and their characteristic species and the influence of sand
deposition. In this presentation we will report about a plan to compare the site
conditions in the Netherlands with those in some other countries like Latvia,
Lithuania and Germany. Besides we plan a project to study the syntaxonomic
position of the sandy levee communities in the Netherlands in comparison with the
syntaxonomy of comparable grasslands in other European countries. Species like
Artemisia campestris, Thalictrum minus, Veronica prostrata, Veronica austriaca ssp.
teucrium, Thymus serpyllum, T. pulegioides, Sedum sexangulare, S. reflexum, S.
album, Salvia pratensis, Potentilla verna, Plantago media, Medicago falcata,
Herniaria glabra, Galium verum, Euphorbia cyparissias, E, seguieriana, Eryngium
campestre, Dianthus deltoids, Cynodon dactylon, Cerastium arvense, Carex
caryophyllea, Pimpinella saxifraga, Sanguisorba minor, Koeleria macrantha,
Helictotrichon pubescens, Trifolium striatum and Orobanche lutea were used for
relevé selection. Thanks to the kind cooperation of several countries and colleagues
our database is growing and already contains or will contain relevés from Belgium,
Germany, France, Great Britain, Ireland, Latvia, Lithuania, Austria, The
Netherlands, Slovakia, the Czech republic and the Volga region
| Original language | English |
|---|---|
| Title of host publication | 20th International Workshop of the European Vegetation Survey, A century of phytosociology & 20 years of the new spirit in phytosociology, Rome, Italy, 6 - 9 April, 2011 |
| Pages | 56 |
| Publication status | Published - 2011 |
| Event | 20th International Workshop of the European Vegetation Survey, A century of phytosociology & 20 years of the new spirit in phytosociology, Rome, Italy - Duration: 6 Apr 2011 → 9 Apr 2011 |
Workshop
| Workshop | 20th International Workshop of the European Vegetation Survey, A century of phytosociology & 20 years of the new spirit in phytosociology, Rome, Italy |
|---|---|
| Period | 6/04/11 → 9/04/11 |