Evidence for ecologically significant changes in climate during the post-glacial period in New Zealand: Evidence of climatic change from the vegetation of the North Island

[First paragraph...]
Since Holloway's paper (1954) on changes in Southland forests, attention has naturally been directed towards the possibility of corresponding evidence in the North Island that might prove or disprove his thesis. Changes are conspicuous and widespread in various types of vegetation; their interpretation however has only produced very tentative evidence in support.