IMPACT OF WILDFIRE ON THE AVIFAUNA OF KINGS PARK, PERTH, WESTERN-AUSTRALIA

In January 1989, a wildfire burnt 120 ha (45%) of the 267 ha of native vegetation in Kings Park, Perth, Western Australia. The area burnt in cluded a transect along which birds had been censused during 1986 for comparison with censuses on the same transect during 1928-37 and 1952- 55. Counts of birds along the transect from 1989 to 1995 indicate a sl ow recovery in numbers for 11 (38%) of 29 species present in 1986. Two species disappeared from the transect, but one of these was found els ewhere in the park. There are many reasons for the changes in the avif auna of Kings Park, including changes to the structure of the vegetati on, the increasing isolation of the park from other native vegetation, and changes in the distribution and abundance of species outside the Perth region. The long-term trends in the avifauna and the impact of t he 1989 fire indicate that a new approach to the management of the Par k's vegetation may be required. For example, to avert continuing decli nes in the Park's avifauna, it may be helpful ro re-establish a canopy of eucalypts and to create a more open understorey with some bare gro und. However, the impact of the 1989 fire and the slow recovery of the avifauna illustrate the sensitivity of small reserves to major distur bances and the difficulty of conserving the original biota without int ensive intervention.