作者: Brad Ripley , Gillian Donald , Colin P. Osborne , Trevor Abraham , Tarryn Martin
DOI: 10.1111/J.1365-2745.2010.01700.X
关键词: Flammability 、 Canopy 、 Productivity (ecology) 、 Biomass (ecology) 、 Biology 、 Herbaceous plant 、 Fire ecology 、 Ecology 、 Specific leaf area 、 Fire regime
摘要: Summary 1. C4 grasses possess characteristics that potentially advantage growth in fire-prone environments, including high photosynthetic productivity, efficient light and nutrient use significant allocation to below-ground reserves reproduction. Such allow fast regeneration after fire, may be the consequence of physiology, phylogenetic ancestry or have been acquired as adaptations frequently burnt environments. 2. The aim this study was examine role pathway by comparing fire ecology closely related C3 C4 subspecies Alloteropsis semialata. Its focus on above-ground would contribute a fuel load, re-growth responses plants subsequent controlled experimental burn during natural winter season. 3. Prior burn, but frost, biomass entirely dead plants, more flammable than plants. maintained 33% their canopy alive despite frosts hence lost proportion living tissue burn. 4. Subsequent did not recover biomass, area returned its pre-burn level through production leaves with greater specific leaf area. There little evidence remobilization reserves, which were less half size reserves. Re-growth strongly supported reallocation similar for control although had weak stimulatory effect re-growth. 5. Synthesis. Differences A. semialata indicated is better adapted fire. Not only it produce detrimentally affected recovered rapidly subspecies, without requirement altered allometry. direct an indirect adaptation environments differing regimes.