1999
DOI: 10.1080/0028825x.1999.9512647
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Seasonal changes in semi‐arid vegetation of Central Otago, New Zealand

Abstract: Seasonal changes in the semi-arid grassland vegetation of Central Otago, New Zealand, are examined using data collected in nine pairs of spring and autumn sampling dates at five long-term plots, and data from consecutive autumn, spring, and summer surveys across an environmental gradient. Seasonal changes are small in relation to those occurring in the vegetation from year to year, and to spatial differences in vegetation across the landscape. Seasonal changes in community characteristics and in the abundance … Show more

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Cited by 3 publications
(2 citation statements)
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“…Although pasture cover in the local hill country consists largely of annual plants, there is also a moderate component of perennials, predominantly grasses (Walker et al, 1999). A significant reduction in resident native-plant ground cover occurred in the unfertilized, non-drilled plots from the pre-trial assessment in August 1998 (33 per cent) to April 2000 (8 per cent) despite the exclusion of grazing animals.…”
Section: Discussionmentioning
confidence: 99%
“…Although pasture cover in the local hill country consists largely of annual plants, there is also a moderate component of perennials, predominantly grasses (Walker et al, 1999). A significant reduction in resident native-plant ground cover occurred in the unfertilized, non-drilled plots from the pre-trial assessment in August 1998 (33 per cent) to April 2000 (8 per cent) despite the exclusion of grazing animals.…”
Section: Discussionmentioning
confidence: 99%
“…Published relationships between climate and the dynamics of ungrazed dryland vegetation are limited to highly disturbed areas (link 1 in Fig. 16.3; Allen et al 1995;Walker et al 1999). Rainfall events, during periods of moisture deficit, have their greatest effect on yearly plant growth and species composition at shady sites and on deeper soils where soil moisture-holding capacity is relatively high.…”
Section: Bottom-up Processesmentioning
confidence: 99%