Relationships between plant communities and the physical environment during primary succession on recently deglaciated glacier forelands were studied in 3 areas of the Italian Alps. The aim of the research was to relate traditional phytosociological data with environmental variables. Twenty-eight phytosociological relevds were performed, each associated with twenty-six environmental variables; quantitative parameters of richness and diversity were also calculated. Species/relev6s, environmental variables/relev& and species/environmental variables matrices were analyzed by cluster analysis, PCA and Spearman correlation coefficient. Three main stages of succession were identified by floristic composition and confirmed by environmental parameter evaluation. A complex of environmental variables seems to be closely correlated with terrain age and richness/diversity parameters, even though diversity decreases in late successional stages. The phytosociological significance of species is in accordance with their position in the context of succession.

Vegetation and environrnental factors during primary succession on glacier forelands: some outlines from the Italian Alps.

CERABOLINI, BRUNO ENRICO LEONE
2001

Abstract

Relationships between plant communities and the physical environment during primary succession on recently deglaciated glacier forelands were studied in 3 areas of the Italian Alps. The aim of the research was to relate traditional phytosociological data with environmental variables. Twenty-eight phytosociological relevds were performed, each associated with twenty-six environmental variables; quantitative parameters of richness and diversity were also calculated. Species/relev6s, environmental variables/relev& and species/environmental variables matrices were analyzed by cluster analysis, PCA and Spearman correlation coefficient. Three main stages of succession were identified by floristic composition and confirmed by environmental parameter evaluation. A complex of environmental variables seems to be closely correlated with terrain age and richness/diversity parameters, even though diversity decreases in late successional stages. The phytosociological significance of species is in accordance with their position in the context of succession.
Glacier foreland vegetation; Italian Alps; Phytosociology; Primary succession
Caccianiga, M.; Andreis, C.; Cerabolini, BRUNO ENRICO LEONE
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/1486699
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