the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A hydrological framework for persistent river pools in semi-arid environments
Abstract. Persistent surface water pools along non-perennial rivers represent an important water resource for the plants, animals, and humans that inhabit semi-arid regions. While ecological studies of these features are not uncommon, these are rarely accompanied by a rigorous examination of the hydrological and hydrogeological characteristics that create or support the pools. Here we present an overarching framework for understanding the hydrology of persistent pools based on data from 22 pools in the Hamersley Basin in Western Australia. Three dominant mechanisms that control the occurrence of persistent pools have been identified; perched pools, through flow pools and groundwater discharge pools. Groundwater discharge pools are further categorized into those that are present because of a geological contact or barrier, and those that are controlled by topography. A suite of diagnostic tools (including geological mapping, hydraulic data and hydrochemical surveys) is generally required to identify the mechanism supporting persistent pools. Perched pools are sensitive to climate variability but their persistence is largely independent of groundwater withdrawals. Water fluxes to pools from alluvial and bedrock aquifers can vary seasonally and resolving these inputs is generally non-trivial. The susceptibility of through-flow and groundwater discharge pools to climate variations and groundwater withdrawals depends on the mechanism of pool persistence and the spatial distribution of stressors relative to the pool. Although this framework was developed in the context of north-western Australia, this framework can also be applied to pools and springs found along non-perennial rivers around the world.
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SC1: 'Review and endorsement', Gabriel Rau, 27 Apr 2020
- AC3: 'Response o SC1', Sarah Bourke, 13 Jul 2020
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RC1: 'Review of manuscript: A hydrological framework for persistent river pools in semi-arid environments, by Bourke et al.', Anonymous Referee #1, 09 Jun 2020
- AC1: 'Short response to RC1', Sarah Bourke, 23 Jun 2020
-
RC2: 'Review of Bourke et al., “A hydrological framework for persistent river pools in semi-arid environments”', Anonymous Referee #2, 06 Jul 2020
- AC2: 'Response to R2 - clarification of the value and novelty of the manuscript', Sarah Bourke, 07 Jul 2020
-
SC1: 'Review and endorsement', Gabriel Rau, 27 Apr 2020
- AC3: 'Response o SC1', Sarah Bourke, 13 Jul 2020
-
RC1: 'Review of manuscript: A hydrological framework for persistent river pools in semi-arid environments, by Bourke et al.', Anonymous Referee #1, 09 Jun 2020
- AC1: 'Short response to RC1', Sarah Bourke, 23 Jun 2020
-
RC2: 'Review of Bourke et al., “A hydrological framework for persistent river pools in semi-arid environments”', Anonymous Referee #2, 06 Jul 2020
- AC2: 'Response to R2 - clarification of the value and novelty of the manuscript', Sarah Bourke, 07 Jul 2020
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Cited
6 citations as recorded by crossref.
- An overview of the hydrology of non‐perennial rivers and streams M. Shanafield et al. 10.1002/wat2.1504
- Aquifer-Stream Exchanges and the Importance of Groundwater Discharge for Maintaining Instream Habitat and Benthic Macroinvertebrates A. Mitton & D. Allen 10.3389/feart.2022.768836
- Conservation and Management of Isolated Pools in Temporary Rivers N. Bonada et al. 10.3390/w12102870
- A Proposal to Classify and Assess Ecological Status in Mediterranean Temporary Rivers: Research Insights to Solve Management Needs A. Munné et al. 10.3390/w13060767
- Comparison of vegetation composition in an ephemeral stream channel and the perimeter of pools in subtropical subhumid Central Texas J. Hutchinson 10.1002/rra.4226
- Life cycle and seasonal regulation of Onychogomphus forcipatus unguiculatus in the Seybouse River, Algeria (Insecta: Odonata) B. Samraoui et al. 10.48156/1388.2024.1917253