IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.6
Influence of Flow Regime on the Vegetation Zonation along Mountain Streams in the Western Cape, South Africa
Erwin Jacobus Joannes SIEBEN
Corresponding AuthorErwin Jacobus Joannes SIEBEN
2015-11
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume12Issue:6Pages:1484-1498
Subtype期刊论文
AbstractZonation patterns of riparian vegetation have been sampled and described in mountain streams in two catchments in the Hottentots-Holland Mountains, Western Cape, South Africa. Six main vegetation types that differ in structure and species composition, are dominant along these river banks: Aquatic vegetation, Wetbanks, Palmiet, Scrub, Forest and Shrubland (Fynbos). The study aims to correlate the vegetation patterns to flooding patterns, in particular the inundation frequency and stream power. A problem arises: because these catchments are ungauged, like most mountain catchments, with the only weirs at the downstream end of the catchment. Discharge data at the weirs are extrapolated to the sites upstream by multiplication with a factor based on the size of the subcatchment that drains through a sample site. In this way, recurrence intervals for floods in mountain streams are derived. Discharges at sites are also calculated using bed roughness (Manning's n) and slope in straight sections with uniform flow conditions. Stream power is derived from the discharges calculated in this manner. The combination of stream power and recurrence intervals explains the occurrence of most vegetation types occurring on the banks, except for one type: Afromontane Forest. This type is probably more dependent on other factors, such as protection from fire and the depth of the groundwater table.
KeywordHydrology Hydraulics Riparian Vegetation Mountain Streams Floods Stream Power MaN.iN.'s N.
DOI10.1007/s11629-014-3420-7
Indexed BySCI
Language英语
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/11050
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.6
Recommended Citation
GB/T 7714
Erwin Jacobus Joannes SIEBEN. Influence of Flow Regime on the Vegetation Zonation along Mountain Streams in the Western Cape, South Africa[J]. Journal of Mountain Science,2015,12(6):1484-1498.
APA Erwin Jacobus Joannes SIEBEN.(2015).Influence of Flow Regime on the Vegetation Zonation along Mountain Streams in the Western Cape, South Africa.Journal of Mountain Science,12(6),1484-1498.
MLA Erwin Jacobus Joannes SIEBEN."Influence of Flow Regime on the Vegetation Zonation along Mountain Streams in the Western Cape, South Africa".Journal of Mountain Science 12.6(2015):1484-1498.
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