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Impact of early and late dry-season fires on plant mortality and seed banks within riparian and subriparian infestations of rubber vine (Cryptostegia grandiflora)

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Bebawi, F. F. and Campbell, S. D. (2002) Impact of early and late dry-season fires on plant mortality and seed banks within riparian and subriparian infestations of rubber vine (Cryptostegia grandiflora). Australian Journal of Experimental Agriculture, 42 (1). pp. 43-48. ISSN 0816-1089

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Article Link: https://doi.org/10.1071/EA01047

Abstract

This study compared the efficacy of first and second fires applied during the early (August–September) and late dry season (October–November) on mortality of riparian (climbing) and subriparian (freestanding) infestations of rubber vine (Cryptostegia grandiflora R. Br.). The impact of fire treatments on germinable seed banks of monocotyledonous and dicotyledonous species was also determined. Individually, fire season, habitat type and number of fires significantly affected mortality of rubber vine plants. Late-season fires promoted higher mortality of rubber vine (96%) than early season fires (77%), with rubber vine in subriparian habitats more susceptible (90% mortality) than that growing in riparian areas (68% mortality). On average, fire mortality increased from 32% after the first fire up to 86% following 2 fires. Sensitivity of juvenile, mature, and old rubber vine plants to fire was in the order of mature>juvenile>old. Early fires significantly reduced seed banks of monocotyledonous plants, particularly in riparian habitats. Late fires significantly reduced seed banks of both dicotyledonous and monocotyledonous plants. No rubber vine seeds were detected in the germinable seed bank of either burnt or unburnt plots.

Item Type:Article
Subjects:Agriculture > Agriculture (General) > Agriculture and the environment
Plant pests and diseases > Weeds, parasitic plants etc
Live Archive:12 Jan 2024 05:46
Last Modified:12 Jan 2024 05:46

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