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- W3010197983 abstract "The importance of environmental flows and establishing the balance between hydrologicalresponse and ecological functioning of rivers has been globally recognised. Methods fordetermining environmental flows range from simplistic hydrological methods, to complexholistic approaches. Extensive research has been conducted to understand the dynamics ofperennial rivers. However, non-perennial rivers remain among the least studied freshwatersystems. Although these rivers only flow during certain periods of the year, these riversystems are still of ecological significance. This study therefore aims to characterise the flowregime of non-perennial rivers in an ecologically meaningful way and to assess the spatialvariation of these flow attributes. This study identified a subset of ecologically relevant flowindices that provided the opportunity to characterise the flow regime in an ecologicallymeaningful way, which was based on recommendations of previous studies. Redundancyanalysis was used in the study to assess factors that account for the spatial variation ofecologically relevant flow indices of non-perennial rivers. The results identified that meanannual rainfall and the slope equalled or exceeded 90 % of the time were the only catchmentcharacteristics found to be significant at explaining the variance of flow characteristics. Thefinal objective of the study explored methods that can be used to predict flow characteristicsin ungauged catchments. Most catchments around the globe are ungauged or poorly gauged,which is a core issue in hydrology." @default.
- W3010197983 created "2020-03-13" @default.
- W3010197983 creator A5015065589 @default.
- W3010197983 date "2019-01-01" @default.
- W3010197983 modified "2023-09-27" @default.
- W3010197983 title "Identification and estimation of ecologically relevant flow indices for non-perennial rivers, South Africa" @default.
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