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Vegetation pattern divergence between dry and wet season in a semiarid savanna - Spatio-temporal dynamics of plant diversity in northwest Namibia

Title data

Hassler, Sybille K. ; Kreyling, Jürgen ; Beierkuhnlein, Carl ; Eisold, Jenny ; Samimi, Cyrus ; Wagenseil, Hendrik ; Jentsch, Anke:
Vegetation pattern divergence between dry and wet season in a semiarid savanna - Spatio-temporal dynamics of plant diversity in northwest Namibia.
In: Journal of Arid Environments. Vol. 74 (2010) Issue 11 . - pp. 1516-1524.
ISSN 0140-1963
DOI: https://doi.org/10.1016/j.jaridenv.2010.05.021

Abstract in another language

African savannas are primarily used as pastures and are subject to changes in climate and management strategies. For sustainable management of these landscapes ecological knowledge on seasonal and long-term variability in plant community composition and the availability of green biomass is essential. In this study, we assessed the effects of dry and wet season on species richness and beta diversity for three sites along a gradient of increasing vegetation cover and precipitation in northwest Namibia. A hexagonal systematic sampling design was used to record floristic data. The Simple Matching, Soerensen, and multi-plot similarity coefficient and distance decay analyses were applied for examining beta diversity. Analyses were repeated while separating the plots according to the presence of woody vegetation. Species richness nearly doubled from dry to wet season; compositional similarity increased from dry to wet season and with increasing aridity of the study sites; distance decay was more pronounced in the dry season without any link to the precipitation gradient. Woody elements in the landscape, which occur along drainage lines or as tree islands, govern spatial and seasonal plant diversity fluctuations. Monitoring them is important for conservation strategies and for establishing grazing rules that ensure a sustainable use of savanna ecosystems.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER85081
Keywords: Wet Season ; Biomass ; Vegetation Cover ; Drainage ; Pastures ; Islands ; Ecosystems ; Dry Season ; Botanical Composition ; Savannas ; Landscapes ; Climate
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography > Chair Biogeography - Univ.-Prof. Dr. Carl Beierkuhnlein
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology > Professorship Disturbance Ecology - Univ.-Prof. Dr. Anke Jentsch
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Climatology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Climatology > Professorship Climatology - Univ.-Prof. Dr. Cyrus Samimi
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > African Studies
Profile Fields > Advanced Fields > Ecology and the Environmental Sciences
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 05 Jun 2015 06:18
Last Modified: 02 Jun 2017 07:20
URI: https://eref.uni-bayreuth.de/id/eprint/14667