Identifying groundwater thresholds for drought resilience in floodplain tree species in the northern Murray-Darling Basin
Presentation
Paper/Presentation Title | Identifying groundwater thresholds for drought resilience in floodplain tree species in the northern Murray-Darling Basin |
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Presentation Type | Presentation |
Authors | Reardon-Smith, Kate (Author), Kath, Jarrod (Author), Le Brocque, Andy (Author) and Dyer, Fiona (Author) |
Editors | Andersen, Alan |
Journal or Proceedings Title | Proceedings of the 2014 Ecological Society of Australia Annual Conference (ESA 2014) |
Year | 2014 |
Place of Publication | Canberra, Australia |
Web Address (URL) of Paper | http://www.esa2014.org.au/ |
Conference/Event | 2014 Conference of the Ecological Society of Australia (ESA 2014) |
Event Details | 2014 Conference of the Ecological Society of Australia (ESA 2014) Delivery In person Event Date 28 Sep 2014 to end of 03 Oct 2014 Event Location Alice Springs, Australia |
Abstract | Previous research identifies links between groundwater depth and canopy condition in dominant riparian and floodplain tree species associated with ephemeral river systems, particularly during drought. Chronic groundwater decline, evident in many agricultural landscapes worldwide, effectively decouples tree roots from deep soil moisture resources, increasing the susceptibility of trees to changes in precipitation. Drought may trigger loss of canopy condition and, where severe or prolonged, have long term consequences for the function and survival of trees and the composition, structure and function of ecosystems they dominate. However, critical groundwater depth thresholds, which may reflect ecological 'tipping points' in such systems, have been difficult to identify. |
Keywords | groundwater levels; river red gum; poplar tree; Australia; irrigation limits; canopy condition; dieback; drought; ecological threshold; groundwater dependent ecosystems; tipping point |
ANZSRC Field of Research 2020 | 410406. Natural resource management |
410401. Conservation and biodiversity | |
410206. Landscape ecology | |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | International Centre for Applied Climate Science |
University of Canberra |
https://research.usq.edu.au/item/q2qw9/identifying-groundwater-thresholds-for-drought-resilience-in-floodplain-tree-species-in-the-northern-murray-darling-basin
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