Nothofagus truncata

Zealand. In the North Island, at moderate altitudes (300-600 m), the hard beech (Nothofagus truncata) may be the sole and dominant species of the forest. Since the mid-1970s there has been a marked dieback of Nothofagus, without replacement and particularly at lower altitudes. 

Fig. 12. Sensitivity of growth in Nothofagus truncata to the combined effects of drought and leaf-miner Neomycta publicaris) infestation, (a) Stable site with low Neomycta infestation (6) dieback site with high Neomycta infestation (after Hosking Hutcheson, 1986).

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