New Zealand Journal of Botany abstracts

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Modern pollen spectra from Chatham Island, New Zealand

J. R. Dodson

Department of Geography, University of Canterbury, Christchurch, New Zealand

Abstract Surface samples were used to study pollen dispersal of the major vegetation elements on Chatham Island. Size differences between the pollen of the two Dracophytlum species of Chatham Island enabled the two vegetation types in which they occur to be differentiated with a small uncertainty factor. It was found that with a pollen sum of total terrestrial pollen and spores Myrsine, Pinus radiata, Plantago lanceolata, Poaceae, and Rumex were over-represented; Coprosma, Muehlenbeckia australis, Pseudopanax chathamicus, and most ferns were well-represented; and Corynocarpus laevigatus, Cyathodes robusta, Dracophyllum arboreum, Gentiana chathamica, HistiopterisjHypolepis, Olearia traversii, Ranunculaceae, Restionaceae, Senecio huntii, and Sphagnum were under-represented. It would be difficult to determine entirely on the basis of pollen rain whether the under-represented class is present in the vegetation. A comparison is made of the major findings of this study with previous studies conducted on mainland New Zealand.

Received 4 August 1976
New Zealand Journal of Botany, 1976, Vol. 14: 341-7.

PDF file of entire paper: medium quality (423K); (scanned from paper original: notes about this process)

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