The forest vegetation of the upper Oise valley (Belgium and France): an integrated phytosociological approach.

Authors
Citation
G. Decocq, The forest vegetation of the upper Oise valley (Belgium and France): an integrated phytosociological approach., BELG J BOT, 133(1-2), 2000, pp. 53-83
Citations number
22
Language
FRANCESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
BELGIAN JOURNAL OF BOTANY
ISSN journal
0778-4031 → ACNP
Volume
133
Issue
1-2
Year of publication
2000
Pages
53 - 83
Database
ISI
SICI code
0778-4031(2000)133:1-2<53:TFVOTU>2.0.ZU;2-E
Abstract
The forest vegetation of the upper Oise valley (Belgium and France): an int egrated phytosociological approach. - From its springhead close to Chimay ( Belgium) until it reachs the Thierache hills (department Aisne, France), th e Oise river has carved its course through the primary mounts of Ardennes, where the substrate composed by schists and sandstones is almost covered by forests. Forest vegetation of this hydrological geomorphological complex i s studied according to a phytosociological method that integrates different spatiotemporal organization levels ("integrated" synusial phytosociology) : 1) synusiae : arborescent, shrubby and herbaceous synusiae were respectiv ely distributed into 6, 6 and 10 synusial associations; 2) phytocoenoses : 11 coenassociations were provisionally recognized; 3) teselas: 3 sigmassoci ations were provisionally distinguished; 4) catenas: the whole forest compl ex seems to belong to a same geosigmassociation. Our results show the high floristical and phytosociological diversity of the upper Oise valley, as we ll as its spatial arrangement from a local scale (synusiae and phytocoenose s) to a regional one (teselas and catenas). The position of this region as a phytogeographical junction is emphasized.