Ecological conditions for Saxifraga hirculus in Central Europe: a better understanding for a good protection

Details

Ressource 1Download: BIB_5C40E0581070.P001.pdf (322.47 [Ko])
State: Public
Version: author
Serval ID
serval:BIB_5C40E0581070
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Ecological conditions for Saxifraga hirculus in Central Europe: a better understanding for a good protection
Journal
Biological Conservation
Author(s)
Vittoz P., Wyss T., Gobat J. M.
ISSN
0006-3207
Publication state
Published
Issued date
2006
Peer-reviewed
Oui
Volume
131
Number
4
Pages
594-608
Abstract
Saxifraga hirculus is a postglacial relict in Central Europe, whose populations suffered a dramatic decrease in the 19th and 20th centuries. However, few researchers have been interested in its ecological requirements in Central Europe. This article synthesizes previous knowledge supplemented by original data from the last large population (Switzerland). S. hirculus is a weak competitor which needs precise ecological conditions. It grows on bryophyte carpets in neutral to slightly acid wetlands, with stable water table close to the soil surface (optimum between 8-14 cm) but does not stand long flooding. However, it requires a good oxygen supply, with roots 2-3 cm under the soil surface, generally not reached by water, with running, cold water through loose, fibric peat. Its optimal conditions are in spring fens, but it grows in other types of wetlands as well. However, overgrowing by shrubs, sedges or Sphagnum in natural successions may threaten the species with extinction, as did drainage and peat extraction previously. Now, its survival in Central Europe depends on an adequate management of the ecosystems. Moderate grazing (cattle or sheep) or mowing help to limit competition with taller Carex species. Re-introduction of disappeared populations or creation of new ones from cultivation in botanical garden is possible, but appropriate sites are rare. In some cases, substrate management could improve the conditions in somewhat inadequate situations. This management in four directions can be flexibly applied in different situations to progress to optimal conditions for the conservation of this valuable species.
Web of science
Create date
20/01/2008 15:33
Last modification date
20/08/2019 14:14
Usage data