The response of an Australian arid-zone gecko community to sulphur dioxide and salt spray from a mine and industrial site
was investigated from 1992 to 1995. Geckos were abundant and fecund at control sites in chenopod shrubland and annual capture
rates were strongly influenced by minimum night temperatures. Capture rate and percentage of females gravid at sites exposed
to high concentrations of air pollutants were significantly lower than at control sites. Discrepancies between control and
impacted sites were greatest for the termite-specialist geckos
Diplodactylus conspicillatus and
Rhynchoedura ornata. An increase in capture rates and percentage of females gravid at sites close to the industrial site, followed a reduction
in peak sulphur dioxide emissions. Geckos may be sensitive and useful bioindicators of the environmental impacts of some atmospheric
pollutants.
Key words Gekkonidae - Bioindicators - Atmospheric pollution - Sulphur dioxide - Arid zone
Received: 1 September 1997 / Accepted: 17 November 1997