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https://hdl.handle.net/1959.11/20422
Title: | Effects of discharge regulation on slackwater characteristics at multiple scales in a lowland river | Contributor(s): | Price, Amina E (author); Humphries, Paul (author); Gawne, Ben (author); Thoms, Martin (author) | Publication Date: | 2013 | DOI: | 10.1139/cjfas-2012-0164 | Handle Link: | https://hdl.handle.net/1959.11/20422 | Abstract: | The spatial and temporal dynamics of physical habitat in rivers is driven by the interaction between channel morphology and discharge. However, little is known about how altered discharge affects the dynamics of habitat patches such as slackwaters. This study investigated the influence of discharge on the availability, stability, quality, and diversity of slackwaters in a southeastern Australian lowland river. The area, spatial configuration, permanence, and within-patch characteristics of slackwaters of two reaches in a regulated section and two reaches in a largely unregulated section of the river were compared. There was less slackwater area and it was less permanent at higher discharges and in the two regulated reaches than at lower discharges and in the largely unregulated reaches. Individual slackwaters were more homogenous in relation to within-patch characteristics in the regulated than in the largely unregulated reaches. However, variability in the spatial configuration of slackwaters and within-patch characteristics and diversity at the reach scale were not related to discharge. We suggest that channel morphology, rather than discharge, is the main driver of these characteristics. | Publication Type: | Journal Article | Source of Publication: | Canadian Journal of Fisheries and Aquatic Sciences, 70(2), p. 253-262 | Publisher: | NRC Research Press | Place of Publication: | Canada | ISSN: | 1205-7533 0706-652X |
Fields of Research (FoR) 2008: | 040699 Physical Geography and Environmental Geoscience not elsewhere classified 040607 Surface Processes |
Fields of Research (FoR) 2020: | 370999 Physical geography and environmental geoscience not elsewhere classified 370901 Geomorphology and earth surface processes |
Socio-Economic Objective (SEO) 2008: | 970105 Expanding Knowledge in the Environmental Sciences 960699 Environmental and Natural Resource Evaluation not elsewhere classified |
Socio-Economic Objective (SEO) 2020: | 280111 Expanding knowledge in the environmental sciences | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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