COMPETITION AND THE COEXISTENCE OF SPECIES IN A MIXED PODOCARP STAND

The importance of intra- and interspecific competition in affecting the growth and survival of Dacrycarpus dacrydioides and Dacrydium cupressinum, the two dominant trees in a mixed podocarp stand in Ohinemaka Forest, south Westland, New Zealand, was investigated. Two lines of evidence (spatial patterning of trees and correlates of tree performance with neighbourhood density) were used to infer the importance of competition. Intraspecific competition among D. dacrydioides trees appeared to be intense. Mean radial growth rate (MGR) was significantly negatively correlated with the number of conspecific neighbours, and patterns of non-random mortality resulted in a shift in spatial pattern from a significantly clumped to a significantly regular distribution (...)

[1]  Jacob Weiner,et al.  Neighbourhood interference amongst Pinus rigida individuals , 1984 .

[2]  Peter J. Diggle,et al.  Statistical analysis of spatial point patterns , 1983 .

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

[4]  Norman L. Christensen,et al.  Competition and Tree Death , 1987 .

[5]  R. Duncan.  Disturbance, succession and the coexistence of species in a lowland podocarp forest, South Westland, New Zealand , 1991 .

[6]  R. Duncan.  AN EVALUATION OF ERRORS IN TREE AGE ESTIMATES BASED ON INCREMENT CORES IN KAHIKATEA (DACRYCARPUS DACRYDIOIDES). , 1989 .

[7]  John L. Harper,et al.  INTERFERENCE IN DUNE ANNUALS: SPATIAL PATTERN AND NEIGHBOURHOOD EFFECTS , 1977 .

[8]  A. M. Laessle,et al.  Spacing and Competition in Natural Stands of Sand Pine , 1965 .

[9]  J. Harper.  Population Biology of Plants , 1979 .

[10]  E. C. Pielou.  The Use of Plant-to-Neighbour Distances for the Detection of Competition , 1962 .

[11]  N. Fowler.  Density-dependent population regulation in a Texas grassland , 1986 .

[12]  W. D. Hoskins,et al.  Local competition in a naturally established jack pine stand , 1989 .

[13]  Christine A. Ribic,et al.  Testing for life historical changes in spatial patterns of four tropical tree species. , 1986 .

[14]  Bernard W. Silverman,et al.  Methods for Analysing Spatial Processes of Several Types of Points , 1982 .

[15]  Peter J. Diggle,et al.  Competition for Light in a Plant Monoculture Modelled as a Spatial Stochastic Process , 1981 .

[16]  Jacob Weiner,et al.  Size Hierarchies in Experimental Populations of Annual Plants , 1985 .

[17]  T. Coburn.  Spatial Data Analysis by Example , 1991 .

[18]  H. Hinds,et al.  Forest trees and timber of New Zealand. , 1957 .

[19]  N. C. Kenkel,et al.  Pattern of Self‐Thinning in Jack Pine: Testing the Random Mortality Hypothesis , 1988 .

[20]  B. Ripley.  Modelling Spatial Patterns , 1977 .

[21]  L. Firbank,et al.  On the analysis of competition at the level of the individual plant , 2004, Oecologia.

[22]  D. Phillips,et al.  Competition and spacing patterns in desert shrubs , 1981 .

[23]  E. C. Pielou.  A single mechanism to account for regular, random and aggregated populations. , 1960 .

[24]  J. Harper,et al.  Studies in the Dynamics of Plant Populations: II. Components and Regulation of a Natural Population of Rumex Acetosella L. , 1968 .

[25]  D. Norton,et al.  The lowland vegetation pattern, south Westland, New Zealand 2. Ohinemaka forest , 1990 .

[26]  D. Franklin.  Growth rings in rimu from south Westland terrace forest , 1969 .