International Journal of Salt Lake Research

, Volume 7, Issue 2, pp 153–170

The relationship between electrical conductivity and selected macroinvertebrate communities in four river systems of south-west Victoria, Australia

  • Ben J. Kefford
Article

DOI: 10.1023/A:1009019404720

Cite this article as:
Kefford, B.J. International Journal of Salt Lake Research (1998) 7: 153. doi:10.1023/A:1009019404720

Abstract

In order to relate macroinvertebrate fauna to electrical conductivity (EC), a survey of selected orders of macroinvertebrates was conducted in the Glenelg, Hopkins, Merri and Barwon River Catchments in south-west Victoria, Australia. The survey consisted of sampling 21 paired sites at confluences of streams. There was little difference between the in-stream habitat but there was a range of differences in EC between each of the paired sites. The dissimilarity of macroinvertebrate fauna between the paired sites was compared to the proportional difference in EC and other water quality variables (dissolved oxygen, water temperature, pH, NO2-N, NO3-N, PO4 and turbidity). This allowed the elimination of EC being confounded with geographical scale parameters and took into account other water quality parameters that may be confounded with EC. A positive relationship was found between the dissimilarity of the fauna at each of the two paired sites and the proportional difference in EC. No such relationship was found for any other measured water quality variable. The results of this survey show that macroinvertebrate community structure is associated with EC of the river systems investigated after eliminating large scale geographical patterns, in-stream habitat and the measured water quality parameters.

confounding parameters nutrients salinity survey design 

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Ben J. Kefford
    • 1
  1. 1.Department of Natural Resources and EnvironmentMarine and Freshwater Resources InstituteHeidelbergAustralia

Personalised recommendations