Reference : IS THE PRESENCE OF MESOTROPHIC PLANT-COMMUNITIES IN THE PEAT-BOGS OF HAUTES-FAGNES (BELG...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/34478
IS THE PRESENCE OF MESOTROPHIC PLANT-COMMUNITIES IN THE PEAT-BOGS OF HAUTES-FAGNES (BELGIUM) CONNECTED WITH TONALITE INTRUSIONS IN THE REVINIAN LAYERS
English
[fr] La présence de groupements végétaux à caractère mésotrophe au milieu des tourbières des Hautes-Fagnes est-elle liée à des intrusions de tonalite dans les couches Reviniennes?
Hambuckers, Alain mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Taxonomie végétale et biologie de la conservation >]
Schumacker, René mailto [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
Remacle, Jean mailto [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
Frankard, Philippe [> > > >]
1995
Belgian Journal of Botany
128
1
48-56
Yes
National
International
0037-9557
[en] Within the Hautes-Fagnes Nature Reserve (Belgium) acidic and oligotrophic biotopes are developing on very acidified stony silt raised bogs. However, they are locally dominated by mesotrophic species. Based on the fact that there are several outcrops of tonalite in the region and particularly one in the Nature Reserve, a hypothesis to explain these singularities of the vegetation implies discontinuities of the bedrock provoked by intrusions of this magmatic rock in the Revinian layer covering the region. Seventeen plots containing Phragmites australis were examined and vegetation was described. Silt and soil water were sampled and analyzed for mineral contents in 15 sites. The differences of mineral composition between the P. australis plots and their surrounding environment confirmed the more mesotrophic characteristics of these plots (i.e. higher pH, higher Ca and Mg contents, lower Al content). However, the lower Zn, Pb and Fe contents would lead to reject the hypothesis of intrusions of tonalite since these elements are more abundant in the tonalite and its mineralization than in the Revinian rock. Nevertheless, the overall ecological conditions of the examined plots and the differences of plant species composition suggested that the observed chemical environment could be evoked for explaining the distribution of the mesotrophic species in the oligotrophic environment of the Nature Reserve. Consequently, an alternative hypothesis is proposed.
Researchers ; Professionals
http://hdl.handle.net/2268/34478

There is no file associated with this reference.

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.