Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/139219
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DC Field | Value | Language |
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dc.contributor.author | Tibby, J. | - |
dc.contributor.author | Marshall, J.C. | - |
dc.contributor.author | Lobegeiger, J.S. | - |
dc.contributor.author | Amos, K.J. | - |
dc.contributor.author | Pickering, G. | - |
dc.contributor.author | Myburgh, T. | - |
dc.contributor.editor | Unmack, P. | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Marine and Freshwater Research, 2023; 74(12):1050-1070 | - |
dc.identifier.issn | 1323-1650 | - |
dc.identifier.issn | 1448-6059 | - |
dc.identifier.uri | https://hdl.handle.net/2440/139219 | - |
dc.description.abstract | Context: In arid and semi-arid river systems, waterholes are often the only refugia for aquatic organisms during no-flow spells. Sediment accumulation in waterholes reduces their persistence. Aims: To assess this threat, we surveyed the depth of, and dated, waterhole sediments from John Tibby Geography, Environment and Population, the Moonie River, a northern tributary of Australia’s largest river system, the Murray–Darling Basin. Methods: Fine-sediment depth was determined in three of the deepest waterholes in Australia 2010 and 2011 before, and after, the largest flood in over a century. The rate of sediment build up in two waterholes was also determined. Key results: In the deepest sections (>75th percentile depth), there was between 0.7 and 2 m of fine sediment in 2010. Following flooding, sediment depth reduced by 24–54%, with the largest proportional reductions in sediment occurring in the shallowest waterhole. However, net sediment accumulation is still 1.4–2.0 cm year–1 since the 1950s. Conclusions: Sedimentation has reduced the persistence of the deepest waterholes by over 200 days, representing an up to 30% reduction. During the longest droughts known in the Moonie River, this would dry many otherwise permanent waterholes. Implications: Sedimentation is a marked threat to waterhole persistence even following large floods. | - |
dc.description.statementofresponsibility | John Tibby, Jonathan C. Marshall, Jaye S. Lobegeiger, Kathryn J. Amos, Giselle Pickering and Theresa Myburgh | - |
dc.language.iso | en | - |
dc.publisher | CSIRO Publishing | - |
dc.rights | © 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND). | - |
dc.source.uri | http://dx.doi.org/10.1071/mf23016 | - |
dc.subject | catchment management; climate change; ecology; erosion; floodplains; limnology; Murray–Darling Basin; sediment processes; sedimentation | - |
dc.title | Sedimentation from landscape clearance-induced soil erosion threatens waterhole persistence in a semi-arid river system, southern Queensland, Australia | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1071/MF23016 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Tibby, J. [0000-0002-5897-2932] | - |
dc.identifier.orcid | Amos, K.J. [0000-0003-0306-7588] | - |
Appears in Collections: | Ecology, Evolution and Landscape Science publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_139219.pdf | Published version | 4.08 MB | Adobe PDF | View/Open |
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