Abstract• Coarse woody debris (CWD) is returned to Alcoa's rehabilitated mined areas in the jarrah forest as potential vertebrate fauna habitat, however, its value for invertebrate fauna has not been investigated. We sought to determine if CWD in rehabilitated areas supported a similar arthropod fauna to that on fallen logs in the adjacent unmined jarrah forest.• Using emergence tents, sampling from logs in 5-year old and 15-year old rehabilitated forest, and in unmined forest, yielded 2 266 specimens from 187 taxa. Collembola (43% of total) and Acarina (32%) were the most abundant groups, followed by Diptera (11%), Araneae (4%) and Coleoptera (3%).• There were no significant differences in either taxa richness or overall abundance among the three forest types. However, community composition varied significantly. Species richness from the Araneida, Coleoptera and Diptera was highest in the 5-year old rehabilitated forest, while Collembola and Acarina were better represented in the unmined forest; this was related to changes in the environment surrounding the logs as rehabilitated forest develops, and to log condition. The composition of arthropods on logs in the 15-year old rehabilitated forest was intermediate, indicating a trend of increasing similarity to the unmined forest in arthropod fauna as the rehabilitated forest ages.• We suggest that over longer time periods, CWD in rehabilitated forest will support arthropod communities similar to those found in unmined forest. Future work should determine if returning logs to mined areas facilitates the return of CWD-dependent taxa. Mots-clés :débris ligneux grossiers / mine de bauxite / Diptera / Araneae / Coleoptera Résumé -Les arthropodes dans les débris ligneux grossiers de la forêt de jarrah et dans les mines de bauxite réhabilitées en Australie occidentale.• Les débris ligneux grossiers (CWD) sont retournés dans les zones de mines réhabilitées à Alcoa dans la forêt de jarrah comme habitat potentiel de la faune des vertébrés, cependant sa valeur pour la faune invertébrée n'a pas été étudiée. Nous avons cherché à déterminer si les CWD en zones réhabilitées soutenait une faune semblable à celle des arthropodes des arbres abattus dans la forêt adjacente de jarrah.• L'utilisation de tentes d'émergence et l'échantillonnage à partir de billes de 5 et 15 ans dans la forêt réhabilitée et dans la forêt sans mine, a fourni 2 266 spécimens de 187 taxons. Collembola (43 % du total) et Acarina (32 %) ont été les groupes les plus abondants, suivis par Diptera (11 %), Araneae (4 %) et Coleoptera (3 %).• Il n'y avait pas de différences significatives dans la richesse ou l'abondance chez l'un ou l'autre des taxa entre les trois types de forêts. Toutefois, la composition de la communauté a varié de façon significative. La richesse des espèces de Araneida, Coleoptera et Diptera a été la plus élevée dans la forêt réhabilitée âgée de 5-ans, tandis que Collembola et Acarina étaient mieux représentés dans la forêt sans mine ; ce qui a trait aux changements de l'environnement entoura...
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