Fournier Anne, Planchon Olivier. (1998). Link of vegetation with soil at a few metre-scale : herbaceous floristic composition and infiltrability in a Sudanian fallow-land. In :
Abbadie L. (ed.), Lacroix G. (ed.). Biodiversity and ecosystem functioning. Acta Oecologica, 19 (3), p. 215-226. ISSN 1146-609X.
Titre du document
Link of vegetation with soil at a few metre-scale : herbaceous floristic composition and infiltrability in a Sudanian fallow-land
Année de publication
1998
Type de document
Article
Auteurs
Fournier Anne, Planchon Olivier
In
Abbadie L. (ed.), Lacroix G. (ed.), Biodiversity and ecosystem functioning
Source
Acta Oecologica, 1998,
19 (3), p. 215-226 ISSN 1146-609X
The link between vegetation and soil at a few meter-scale was studied in an old physiognomically homogeneous fallow-land (over 30 years) of anthropic Sudanian savanna with poor tree cover. Sampling was conducted systematically on a 60 m x 60 m surface, following a five-metre grid. Floristic releves were made in quadrats (1 m x 1 m), in each corner of which infiltrability was measured by a method derived from the single-ring infiltrometer. Seventy four herbaceous species are present ; the 156 releves could be classified in seven floristic units, which have a clear link with the soil hydropedological characteristics at a few meter-scale. Among the 18 main species (present in at least 10% of the 156 releves) only four could be considered as indifferent to infiltrability, another eight preferred relatively high infiltrability microsites, and the last six preferred poor infiltrability microsites. The relatively high floristic richness of the site can be partly explained by the aptitude of various species to exploit one or another of the different microsites available. The results also suggest a certain structural and functional redundancy between species. (Résumé d'auteur)
