An analysis of succession along an environmental gradient using data from a lawn

Austin, M. P.; Belbin, Lee

doi:10.1007/bf00118381

Cited by 26 publications

(4 citation statements)

References 25 publications

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“…6 and 8) then the transition matrix approach cannot work unless the transitions can be expressed as a function of seasonal differences (cf. Usher, 1979Usher, , 1981Austin, 1980;Austin& Belbin, 1981). If simple physiological models are developed,then for communities with a large annual component as in the Australian climate studied here, the critical phase will be seedling establishment under different seasonal conditions rather than the growth processes of mature plants which can be assumed similar from year to year.…”

Section: Discussionmentioning

confidence: 99%

Grassland dynamics under sheep grazing in an Australian Mediterranean type climate

1981

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Grassland dynamics in a degraded disclimax grassland dominated by Danthonia caespitosa Gaudich. are examined using both demographic and multivariate approaches in an experiment designed to determine the effect of grazing intensity and exclosure on pasture dynamics. The experiment ran for 20 years from 1949 to 1968, using permanent quadrats at 3 grazing intensities and within exclosures. Demographic studies of some perennial grass species demonstrated markedly different responses to grazing; Danthonia caespitosa was unaffected by grazing but responsive to seasonal rainfall differences. Enteropogon acicularis survived only o n protected sites. Numerical classification of total species set (121 species) for six observation periods demonstrated that community types were sensitive to differences in winter rainfall, and time since the start of experiment. Principal component analysis of permanent quadrat observations for individual years demonstrates quadrat trajectories which confirm this and indicate progressive divergence of the successional trends of the grazed and ungrazed quadrats. Repeated analysis on grazed quadrats only, shows that three components of pasture dynamics can be recognized; these are trend (succession?) and seasonal differences, each of which account for about 20% of the variance, and differences due to soil heterogeneity in the experimental paddock (8% of variance accounted for). No effect of grazing intensity was detected. Multivariate techniques can provide a clear partitioning of types of dynamic behaviour present in grassland communities. It is concluded that partitioning of environmental heterogeneity prior to demographic studies would increase their sensitivity. Vegetatio 47, 201-211(1981). 0042 3106/81/0471 0201/$2.20.

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Section: Discussionmentioning

confidence: 99%

Grassland dynamics under sheep grazing in an Australian Mediterranean type climate

1981

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“…The 'classification approach' clusters the samples and estimates transition frequencies between clusters, either based on the structure of the first analysis [e.g., Williams et al, 1969;Londo, 1974;Persson, 1984], or on the structure of all samples at all sampling dates (e.g., Van Noordwijk-Puijk et al, 1979;Persson, 1980;Austin & Belbin, 1981;Zhang, 1984). The two variants have been discussed by Williams et al (1969).…”

Section: Analysis Of Vegetational Variation In Space and Timementioning

confidence: 99%

The separation of fluctuation and long-term change in vegetation dynamics of a rising seashore

Crämer

Hytteborn

1987

Vegetatio

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Field layer vegetation in four transects across a rising seashore of the island Skabbholmen (59°47'N, 19°12'E) in the Stockholm archipelago, eastern central Sweden, was sampled at the beginning and end of a six-year period. The data were analyzed by canonical correspondence analysis (CCA) with two external predictor variables, year of sampling and elevation (a proxy for the longer-term trend of change). During the sampling period, the vegetation changed in the direction of the longer-term trend at a rate consistent with the known rate of land uplift. However, a major part of the observed change was in a different direction, reflecting a shorter-term response to disturbance. The analysis effectively separated different types of floristic dynamics related to processes with different time-scales. A comparison with (unconstrained) correspondence analysis (DCA) illustrated the interpretive advantages of multivariate direct gradient analysis over conventional floristic ordination.

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“…Apart from a series of papers that investigated community stability and assembly rules Wilson and Watkins 1994;Roxburgh and Wilson 2000a, b;Mason and Wilson 2006), simulated plant succession dynamics (Austin 1980, Austin andBelbin 1981), and niche limitation we know of very few studies that have comprehensively investigated lawn composition and diversity. Two such studies are those of Müller (1990) and Thompson et al (2004).…”

Section: Introductionmentioning

confidence: 99%

URban Biotopes of Aotearoa New Zealand (URBANZ) (I): composition and diversity of temperate urban lawns in Christchurch

et al. 2009

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Christchurch urban lawns are dominated by non-native grasses and forbs. However, we document considerable plant diversity; the total number of species encountered in our 327 sampled lawns was 127, although 80 species occurred in <2% of lawns. Seven distinct lawn communities were identified by Two-Way INdicator SPecies ANalysis using occurrence of 47 species that occurred in>2% of lawns. Our ability to explain variation in species composition was surprisingly good and indicates intensity of lawn maintenance such as frequency of mowing, irrigation, fertiliser, and herbicide use and whether clippings are removed or not plays the major role. Species richness significantly declines with an increase in total area of contiguous lawn, leaf litter cover, the presence of grass clippings, and on loamy soil. Hence, park lawns with coarser management had lower species richness than residential lawns. Native species were more prevalent in well tended residential lawns, where more frequent mowing and removal of clippings or litter build-up diminishes shoot competition or shading. There is tremendous potential for more native species in New Zealand lawns which would contribute substantially to the conservation of endangered lowland herbaceous flora.

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An analysis of succession along an environmental gradient using data from a lawn

Cited by 26 publications

References 25 publications

Grassland dynamics under sheep grazing in an Australian Mediterranean type climate

Grassland dynamics under sheep grazing in an Australian Mediterranean type climate

The separation of fluctuation and long-term change in vegetation dynamics of a rising seashore

URban Biotopes of Aotearoa New Zealand (URBANZ) (I): composition and diversity of temperate urban lawns in Christchurch

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