Providing evidence to improve practice

Individual study: Long-term success of mammal, bird and reptile recolonization of reforested bauxite mines in the jarrah Eucalyptus marginata forest of Western Australia

Published source details

Nichols O.G. & Grant C.D. (2007) Vertebrate fauna recolonization of restored bauxite mines - key findings from almost 30 years of monitoring and research. Restoration Ecology


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Restore or create forests Bird Conservation

A controlled, replicated study at the same sites as studied in Nichols & Watkins (1984), from Feburary-March and July-August in 1992, 1995 and 1998 in jarrah forests in southwestern Australia (Nichols & Nichols (2003) found that bird species richness and diversity was comparable between four mined and restored, and four intact sites, eight years after rehabilitation. Of 70 bird species inhabiting intact jarrah forest, 95% were recorded in the rehabilitated sites at some point in the succession. Community dissimilarity (between mined and intact sites) decreased over time. Bird recolonisation was significantly correlated with vegetation growth. The four rehabilitated sites were established in June-July 1990 by re-contouring the mining pit to natural conditions, ripping the pit floor to reduce compaction, and replacing the topsoil. Local trees and understory species were directly seeded and covered with fertiliser.

 

Restore or create forests Bird Conservation

A 2007 study (Nichols & Grant 2007) reports on longer-term studies of the jarrah areas described in Nichols & Watkins (1984). In some restored plots, avian communities were becoming very similar to that of native (undisturbed) forest sites (with 95% of species recorded) within 10 years of restoration.