Systematics and ecology of Dracaena L. (Ruscaceae) in Central, East and Southern Africa

  • Dracaena L. (Ruscaceae) is a predominantly African genus with a smaller centre of diversity in South-East Asia. The taxonomy of the 29 species occurring in Central, East and Southern Africa was revised through phenetic and phylogenetic analyses of the morphology as well as through herbarium, literature and field studies. An infrageneric classification is proposed, in which four sub-genera are recognised for the first time. A taxonomic account for the study area incorporating an identification key, distribution maps and an IUCN Red List assessment is presented. Analysis of Dracaena phytogeography reveals that the Guineo-Congolian centre of endemism is the richest with 21 species while the Maputaland-Pondoland regional mosaic and the Guinea-Congolia/Sudania regional transition zone are the poorest, having only one species each. Investigation of the ecology of Dracaena in the Kakamega Forest, Kenya, shows that it plays an important role in the forest ecology and is an indicator of forest quality.

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Metadaten
Author:Geoffrey Mwachala
URN:urn:nbn:de:hbz:kob7-210
Referee:Eberhard Fischer
Document Type:Doctoral Thesis
Language:English
Date of completion:2005/08/10
Date of publication:2005/08/10
Publishing institution:Universität Koblenz-Landau, Campus Koblenz, Universitätsbibliothek
Granting institution:Universität Koblenz-Landau, Campus Koblenz, Fachbereich 3
Date of final exam:2005/08/03
Release Date:2005/08/10
Tag:Dracaena; Ruscaceae; Systematik; Taxonomie
Number of pages:XI, 135 S.
Institutes:Fachbereich 3 / Institut für Integrierte Naturwissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 58 Pflanzen (Botanik) / 580 Pflanzen (Botanik)
Licence (German):License LogoEs gilt das deutsche Urheberrecht: § 53 UrhG