Riparian eucalypt biogeochemical expression of groundwater salinity, Murray River, South Australia
Date
2013
Authors
McLennan, S.
Hill, S.
Hatch, M.
Barovich, K.
Berens, V.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Geochemistry: Exploration, Environment, Analysis, 2013; 13(2):159-168
Statement of Responsibility
Stephanie M. McLennan, Steven M. Hill, Michael Hatch, Karin Barovich & Volmer Berens
Conference Name
Abstract
Salinisation of floodplains along the Murray River is a significant environmental and social problem in south-eastern Australia that can be expensive and time-consuming to monitor. The potential of plant biogeochemistry as an environmental monitoring tool, specifically its innovative application to groundwater salinity detection, is explored in this paper. Major and trace element biogeochemical data were compared to data from three geophysical surveys in the study area as well as field observations of the underlying stratigraphy. The result is an understanding of how groundwater chemistry can be characterised by plants, specifically river red gum (Eucalyptus camaldulensis) and black box (Eucalyptus largiflorens) leaves. From the survey it is evident that E. camaldulensis and E. largiflorens were both successful in expressing high salinity levels in the subsurface. Molybdenum was the most suitable pathfinder element for high salinity groundwater. The study has important implications for interpreting biogeochemical mineral exploration results; anomalous element concentrations need to be interpreted in relation to salinity levels.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2013 AAG/The Geological Society of London