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We made plant inventories in 60 plots of 50\u2009\u00d7\u200950\u00a0m, located in three distinct habitats: (i) at perennial rivers, (ii) at seasonal rivers with water available only during the rainy season, and (iii) on crests, at least\u2009~\u20095\u00a0km away from any water source. We predicted that large herbivores would utilise seasonal rivers\u2019 habitats less intensely than those along perennial rivers where water is available throughout the year, including dry periods. Plots on granite harboured more herbaceous and shrub species than plots on basalt. The dry crests were poorer in herb species than both seasonal and perennial rivers. Seasonal rivers harboured the highest numbers of shrub species, in accordance with the prediction of the highest species richness at relatively low levels of disturbance and low stress from the lack of water. The crests, exposed to relatively low pressure from grazing but stressed by the lack of water, are important from the conservation perspective because they harbour typical, sometimes rare savanna species, and so are seasonal rivers whose shrub richness is stimulated and maintained by the combination of moderate disturbance imposed by herbivores and position in the middle of the water availability gradient. To capture the complexity of determinants of species richness in KNP, we complemented the analysis of the above local factors by exploring large-scale factors related to climate, vegetation productivity, the character of dominant vegetation, and landscape features. The strongest factor was temperature; areas with the highest temperatures reveal lower species richness. Our results also suggest that\n                    <jats:italic>Colophospermum mopane<\/jats:italic>\n                    , a dominant woody species in the north of KNP is not the ultimate cause of the lower plant diversity in this part of the park.\n                  <\/jats:p>","DOI":"10.1038\/s41598-021-02870-3","type":"journal-article","created":{"date-parts":[[2022,1,10]],"date-time":"2022-01-10T06:04:32Z","timestamp":1641794672000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Water availability, bedrock, disturbance by herbivores, and climate determine plant diversity in South-African savanna"],"prefix":"10.1038","volume":"12","author":[{"given":"Martin","family":"Hejda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"\u010cuda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kl\u00e1ra","family":"Py\u0161kov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guin","family":"Zambatis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Llewellyn C.","family":"Foxcroft","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandra","family":"MacFadyen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Storch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Tropek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Petr","family":"Py\u0161ek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,1,10]]},"reference":[{"key":"2870_CR1","doi-asserted-by":"publisher","first-page":"93","DOI":"10.1146\/annurev.ecolsys.39.110707.173529","volume":"39","author":"KJ Gaston","year":"2008","unstructured":"Gaston, K. 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