Vegetation recovery following fire in two Waikato peatlands at Whangamarino and Moanatuatua, New Zealand

Abstract After fires in 1984 and 1989 at Whangamarino wetland, and in 1972 at Moanatuatua Bog, peatland flora and vegetation were monitored to determine rates and patterns of recovery. Species with rhizomes that survived the fires were able to resprout and grow rapidly in the initial post-fire period. Species that were eliminated had to re-establish from seed and so recovered more slowly. The vegetation at Moanatuatua took almost 12 years to recover to pre-fire condition, twice as long as at Whangamarino. Adventive and early colonising native species were prominent only in the first 1-2 post-fire years, probably because of temporarily increased availability of nutrients and/or open habitat. Ordination techniques arranged the plots and species in a sequence from shrub-sedgeland (Whangamarino), through Empodisma minus restiad rushland (Whangamarino), to Sporadanthus traversii/ Empodisma restiad rushland (Moanatuatua) following a gradient of decreasing fertility with time. Fires reset the bog development pro...

[1]  D. Lowe,et al.  Palynology, vegetation and climate of the Waikato lowlands, North Island, New Zealand, since c. 18,000 years ago , 1989 .

[2]  D. Lowe.  Stratigraphy, age, composition, and correlation of late Quaternary tephras interbedded with organic sediments in Waikato lakes, North Island, New Zealand , 1988 .

[3]  N. Christensen,et al.  Effects of Fire on Nutrient Availability in a North Carolina Coastal Plain Pocosin , 1983 .

[4]  D. Lowe,et al.  Holocene vegetation, climate and history of a raised bog complex, northern New Zealand based on palynology, plant macrofossils and tephrochronology , 1995 .

[5]  M. McGlone,et al.  Vegetation history and environmental significance of pre-peat and surficial peat deposits at Ohinewai, Lower Waikato lowland , 1984 .

[6]  H. Connor,et al.  Name changes in the indigenous New Zealand flora, 1960–1986 and Nomina Nova IV, 1983–1986 , 1987 .

[7]  A. Fife.  Checklist of the Mosses of New Zealand , 1995 .

[8]  J. McCraw.  The surface features and soil pattern of the Hamilton basin , 1967 .

[9]  A. Gill.  Fire and The Australian Flora: A Review , 1975 .

[10]  M. O. Hill,et al.  DECORANA - A FORTRAN program for detrended correspondence analysis and reciprocal averaging. , 1979 .

[11]  D. Lowe,et al.  A review of late Quaternary silicic and some other tephra formations from New Zealand: Their stratigraphy, nomenclature, distribution, volume, and age , 1990 .

[12]  I. Atkinson.  Vegetation map of Tongariro National Park, North Island, New Zealand 1 :50 000 , 1982 .

[13]  C.J.F. ter Braak,et al.  CANOCO - a FORTRAN program for canonical community ordination by [partial] [etrended] [canonical] correspondence analysis, principal components analysis and redundancy analysis (version 2.1) , 1988 .

[14]  S. Timmins.  Wetland vegetation recovery after fire: Eweburn Bog, Te Anau, New Zealand , 1992 .