Groundwater Ecosystems Vary with Land Use across a Mixed Agricultural Landscape
- K. L. Korbel *ae,
- P. J. Hancockb,
- P. Serovc,
- R. P. Limae and
- G. C. Hosede
- a Dep. of Environmental Sciences, Univ. of Technology Sydney, PO Box 123, Broadway, Sydney, NSW 2007, Australia
e Cotton Catchment Communities CRC. Assigned to Associate Editor Tiequan Zhang
b Australian Laboratory Services, Water Resources Group, Ecosystem Management
c Univ. of New England, Armidale, NSW, 2351, and NSW Office of Water, Armidale, NSW 2351
d Deps. of Biological Sciences and Environment and Geography, Macquarie Univ., NSW 2109, Australia
Changes in surface land use may threaten groundwater quality and ecosystem integrity, particularly in shallow aquifers where links between groundwater and surface activities are most intimate. In this study we examine the response of groundwater ecosystem to agricultural land uses in the shallow alluvial aquifer of the Gwydir River valley, New South Wales, Australia. We compared groundwater quality and microbial and stygofauna assemblages among sites under irrigated cropping, non-irrigated cropping and grazing land uses. Stygofauna abundance and richness was greatest at irrigated sites, with the composition of the assemblage suggestive of disturbance. Microbial assemblages and water quality also varied with land use. Our study demonstrates significant differences in the composition of groundwater ecosystems in areas with different surface land use, and highlights the utility of groundwater biota for biomonitoring, particularly in agricultural landscapes.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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