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- W2890168099 abstract "Understanding the environmental factors that influence riparian vegetation community composition and distribution is important for understanding wetland ecosystem functioning. This understanding can further serve to inform policy aimed at conserving wetlands such as the Okavango Delta. In the Okavango Delta, information on the influence of distance from surface water on vegetation community composition and structure is limited. The objective of this study was to determine the relationship between distance from surface water and riparian plant communities at different sites in the Okavango Delta. Vegetation sampling was conducted in four sites in 20 m × 10 m belted plots placed perpendicular to the river bank at 0–10 m, 10–20 m, 20–30 m, 30–40 m, and 40–50 m distance classes. At each site, 10–15 plots were sampled at each distance class. Basal area, species richness, cover, and plant diversity were determined for each plot. Indicator species analysis was used to determine the characteristic species at each distance class. One-way analysis of variance and Tukey post hoc analyses were used to compare species diversity, richness, cover, and basal area between distance classes. Generalized linear mixed (GLM) model was used to test for the overall impact of site and distance on each plant parameter. Mean species richness was significantly (p < 0.05) higher at 0–10 m than at 20–30 m, 30–40 m, and 40–50 m in Boro. There was no significant difference within other sites. Mean species diversity also varied significantly (p < 0.05) in Boro where it was higher at 0–10 m and 10–20 m than at 30–40 m. Mean basal area differed significantly within Jao and Upper Panhandle. In Jao, it was higher (p < 0.05) at 0–10 m than at other distance classes. Mean percentage canopy cover differed significantly within all sites. In addition to this, plant species composition also changed along distance from surface water within each site. From GLM analysis, both distance and site significantly (p < 0.05) influenced diversity and basal area. Species richness and cover were significantly (p < 0.05) influenced by site only. Distance from surface water and site are important determinants of riparian plant dynamics in the Okavango Delta." @default.
- W2890168099 created "2018-09-27" @default.
- W2890168099 creator A5075773663 @default.
- W2890168099 date "2018-08-29" @default.
- W2890168099 modified "2023-10-17" @default.
- W2890168099 title "Spatial variation of the influence of distance from surface water on riparian plant communities in the Okavango Delta, Botswana" @default.
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- W2890168099 doi "https://doi.org/10.1186/s13717-018-0140-x" @default.
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