Abstract
Abstract The endangered shrub Olearia polita occurs only locally in the Moutere Depression, south Nelson, where it is confined to poorly drained alluvial and toe slope sites on soils derived partly from Tertiary material of a type which is also localised in the area. Most of the indigenous vegetation has been cleared from this substrate, and O. polita survives only in several small forest remnants. These are dominated by Nothofagus menziesii, but there are several shrub species present which indicate that the soils are more fertile than those on the surrounding hill country. O. polita stem size class distributions and seedling frequencies indicate an adequate capacity to regenerate given favourable site conditions. Further decline of O. polita could be halted by the establishment of reserves of toe slopes and alluvial sites sufficiently large to accomodate landscape processes such as flooding and slumping.
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