This paper reports on possible effects of selective logging on vegetation structure and its consequences for two tenrec species in a dry forest in western Madagascar. On a small scale semi-mechanized logging of less than 10 m per ha alters forest structure significantly. However on a large scale most of these changes are smaller than the variation of forest structure due to natural causes. The most profound ecological effect of logging is a reduction in the number of woody species in the regenerating cohort of trees. Potential longterm consequences of this feature are discussed. Microhabitat variables influencing the habitat utilization of two tenrec species,Echinops telfairi andTenrec ecaudatus, were identified in an area of unlogged forest. The conclusions derived from this analysis were then tested in other parts of the forest which had been modified by selective logging. Logging of the extent described above slightly impairs habitats forE. telfairi but has no effect onT. ecaudatus. Though the latter species is hunted extensively in the logged areas, loggingper se does not threaten the survival of either species.
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