The Taupo obsidian source, central North Island, New Zealand

Vegetation Mortality in the Kaimai Ranges, North Island, New Zealand!

Areas ofvegetation mortality have been recognized in the upland forests of the Kaimai Ranges, North Island, New Zealand. The mortality is not confined to any particular vegetation type, but occurs above a critical altitude that differs at different points along the ranges. The mortality is episodic and has occurred at intervals over a period of several hundred years, with severe droughts implic...

Isolated deep earthquakes beneath the North Island of New Zealand

Modelling Relationships between Environment and Canopy Composition in Secondary Vegetation in Central North Island, New Zealand

Relationships between composition of secondary vegetation and environment were studied in central North Island, New Zealand. A classification procedure was used to identify broad compositional groups which included forest, broadleaved scrub, shrub-fernland, sclerophyllous scrub and shrubland, and tussock-shrubland. Generalised additive models (GAMs) were used to examine relationships between sp...

Introduced red deer reduce tree regeneration in Pureora Forest, central North Island, New Zealand

This study uses data from repeatedly measured forest monitoring plots (20 × 20 m) (n = 32) and nine ungulate exclosures (paired fenced and unfenced plots; 20 × 20 m) to show the effects of introduced ungulates on tree regeneration in Pureora Forest Park, central North Island, between 1974 and 2002. Results show that introduced ungulates, particularly red deer (Cervus elaphus scoticus), have sup...

Simulating long-term vegetation dynamics using a forest landscape model: the post-Taupo succession on Mt Hauhungatahi, North Island, New Zealand

Forest dynamics in New Zealand are shaped by catastrophic, landscape-level disturbances (e.g. volcanic eruptions, windstorms and fires). The long return-intervals of these disturbances, combined with the longevity of many of New Zealand’s tree species, restrict empirical investigations of forest dynamics. In combination with empirical data (e.g. palaeoecological reconstructions), simulation mod...