Patterns of bryophyte and vascular plant richness in European subalpine springs |
| |
Authors: | Lucia Sekulová Michal Hájek Petra Hájková Eva Mikulášková Alexandre Buttler Vít Syrovátka Zuzana Rozbrojová |
| |
Institution: | 1.Department of Botany and Zoology,Masaryk University,Brno,Czech Republic;2.Department of Vegetation Ecology, Institute of Botany,Academy of Science of the Czech Republic,Brno,Czech Republic;3.Laboratory of Ecological Systems,Ecole Polytechnique Fédérale de Lausanne (EPFL),Lausanne,Switzerland;4.Swiss Federal Research Institute WSL,Restoration Ecology Research Group,Lausanne,Switzerland;5.Laboratoire de Chrono-environnement, UMR 6249 CNRS, UFR des Sciences et Techniques,Université de Franche-Comté,Besan?on,France |
| |
Abstract: | The diversity of spring habitats can be determined not only by local environmental conditions, but also by large-scale biogeographical
effects. The effects can differ across various groups of organisms. We compared α-, β- and γ-diversity patterns of bryophytes
and vascular plants of (sub)alpine springs in three contrasting mountain ranges: Alps (Switzerland), Balkans (Bulgaria), Western
Carpathians (Slovakia, Poland). We used univariate and multivariate statistics to test for the effects of pH, conductivity,
altitude, slope, mean annual temperature and annual precipitation on diversity patterns of both taxonomic groups and compared
diversity patterns among the regions for particular pH and conductivity classes. We identified acidophyte and basiphyte, calcifuge
and calcicole species using species response modelling. All regions displayed significant relationship between conductivity
and α-diversity of vascular plants. Bulgaria showed the highest α-diversity of vascular plants for the middle part of the
conductivity gradient. For both taxonomic groups, the β-diversity in the middle part of gradient was highest in Swiss Alps.
The total species pool was lowest in Bulgaria. The percentage of basiphyte and calcicole species was highest in the Alps.
In (sub)alpine springs, mineral richness was a better determinant of vascular plant α-diversity than pH, and the extent of
the alpine area did not coincide with α-diversity. Observed inter-regional differences in diversity patterns could be explained
by the different proportion of limestone bedrock and different biogeographic history. The differences in α-diversity between
both taxonomic groups are presumably result of the different rates of adaptation processes. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|