A Holocene record of climate, vegetation change and peat bog development, east Otago, South Island, New Zealand
Article first published online: 29 APR 1999
Copyright © 1999 John Wiley & Sons, Ltd.
Journal of Quaternary Science
Volume 14, Issue 3, pages 239–254, May 1999
How to Cite
Mcglone, M. S. and Wilmshurst, J. M. (1999), A Holocene record of climate, vegetation change and peat bog development, east Otago, South Island, New Zealand. J. Quaternary Sci., 14: 239–254. doi: 10.1002/(SICI)1099-1417(199905)14:3<239::AID-JQS438>3.0.CO;2-9
- Issue published online: 29 APR 1999
- Article first published online: 29 APR 1999
- Manuscript Accepted: 30 OCT 1998
- Manuscript Revised: 26 OCT 1998
- Manuscript Received: 3 AUG 1998
- Foundation for Research, Science and Technology, New Zealand. Grant Number: C09525
- testate amoebae
A Holocene record of pollen, macrofossils, testate amoebae and peat humification is presented from a small montane bog. Sediment accumulation began before 9000 yr BP, but peat growth not until ca. 7000 BP. From 12 000 to 7000 yr BP, a shrub–grassland dominated under a dry climate, with increasing conifer forest and tall scrub from ca. 9600 yr BP. At 7000 yr BP a dense montane–subalpine low conifer forest established under a moist, cool climatic regime. Between 7000 and 700 yr BP the bog surface was shrubby, tending to be dry but with highly variable surface wetness. The catchment was affected by major fire at least four times between 4000 and 1000 yr BP. Both fire and bog surface wetness may have been linked to ENSO-caused variations in rainfall. Cooler, cloudier winters and disturbance by fire promoted the expansion of the broadleaf tree Nothofagus menziesii between 4000 yr BP and 1300 yr BP at the expense of the previous conifer forest–scrub vegetation. Polynesian fires (ca. 700 yr BP) reduced the vegetation to tussock grassland and bracken. Deforestation did not markedly affect the hydrology of the site. European pastoralism since ad 1860 has increased run-off and rising water tables in the bog have led to a Sphagnum-dominated cover. Copyright © 1999 John Wiley & Sons, Ltd.