How effective is spotlighting for detecting the greater glider (
D. B. Lindenmayer, R. B. Cunningham, C. F. Donnelly, R. D. Incoll, M. L. Pope, C. R. Tribolet, K. L. Viggers and A. H. Welsh
28(1) 105 - 109
AbstractThe efficacy of spotlighting as a field survey technique for detecting the greater glider (Petauroides volans) was assessed by comparing the precise location of radio-tracked animals with locations determined simultaneously from spotlighting searches. Radio-collars were fitted to 20 greater gliders in three eucalypt patches embedded within an extensive radiata pine (Pinus radiata) plantation near Tumut in south-eastern New South Wales. Our success rate for detecting collared animals was low, even when survey effort was increased. These findings suggest that spotlighting underestimates actual population size. A further, properly designed study, in different forest types is needed to provide precise estimates of the magnitude of the bias in counts of P. volans obtained by spotlighting.
© CSIRO 2001