The ecological significance of canopy seed storage in fire-prone environments: a model for non-sprouting shrubs
@article{Enright1998TheES, title={The ecological significance of canopy seed storage in fire-prone environments: a model for non-sprouting shrubs}, author={Neal J. Enright and Ralf Marsula and Byron B. Lamont and Christian Wissel}, journal={Journal of Ecology}, year={1998}, volume={86}, pages={946-959} }
1 A comprehensive data set on age, survival and reproduction for the non-sprouting (fire-killed) shrub Banksia hookeriana, encompassing 13 years of measurements at 15 sites in south-western Australia, and including 10 fires, was used to parameterize a computer model to investigate optimum plant life-history strategies in a fire-prone environment. Parameter ranges encompassed life-history information for other nonsprouting Banksia species from the same region. 2 The relationship between fire…
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References
SHOWING 1-10 OF 63 REFERENCES
Canopy seed bank dynamics and optimum fire regime for the highly serotinous shrub, Banksia hookeriana
- Environmental Science
- 1996
Evidence of the natural fire frequency to which the species is best adapted was sought through analysis of its seed demography using a computer model of canopy seed bank dynamics based on field data, which indicates a human impact on the naturalFire regime which may ultimately threaten the species.
Seed Bank and Population Dynamics of Banksia cuneata: The Role of Time, Fire, and Moisture
- Environmental ScienceBotanical Gazette
- 1991
It is concluded that population numbers are not limited by the size and dynamics of the canopy seed bank but by the weather pattern following fire-induced seed release.
Post-fire recruitment and mortality in a population of the mallee Eucalyptus incrassata in semi-arid, south-eastern Australia
- Environmental Science
- 1985
A study of the population dynamics of yellow mallee, Eucalyptus incrassata, based upon the life-stage approach revealed, contrary to previous speculation, that the populations are not static under present conditions, and recruitment events are widely spaced in time, imparting a steady-state appearance to mallee populations.
Predator Satiation and Site Alteration Following Fire: Mass Reproduction of Alpine Ash (Eucalyptus Delegatensis) in Southeastern Australia
- Environmental Science
- 1984
Parallels in seed storage, postdispersal seed predation, and regeneration following fire in Eucalyptus and Pinus suggest that postdisPersal seed predators are important selective agents in the evolution of seed storage and induction of mass seed release by fire.
Seed Bank Dynamics of a Serotinous, Fire-sensitive Banksia Species
- Environmental Science
- 1988
Comparison of 25 reproductive attributes between B. burdettii and another two Banksia species occurring in the vicinity indicated that it has much in common with these serotinous, non-sprouters.
Seed Bank Dynamics of Four Co-Occurring Banksia Species
- Environmental Science
- 1987
With the exception of lower follicle set in the two species which re-sprout after fires, there was no support for the hypothesis that such species would allocate less energy to sexual reproduction than the two non-sprouting species.
Post-Fire Recruitment of Four Co-Occurring Banksia Species
- Environmental Science
- 1987
Significantly fewer seedlings died inside enclosures after the autumn burn than in the unburnt site, indicating the importance of drought-induced mortality in maintaining even-aged populations in mature scrub-heath.
Recruitment variability in the resprouting shrub Banksia attenuata and non-sprouting congeners in the northern sandplain heaths of southwestern Australia
- Environmental Science
- 1992
Seed production, seed availability, seedling recruitment and water relations (xylem pressure potential, stomatal conductance) in Banksia attenuata were studied from the base (swale) to the crests of…
EFFECTS OF FIRE REGIME ON THE SEROTINY LEVEL OF JACK PINE
- Environmental Science
- 1996
The hypothesis that fire imposes differential selective pressures on serotiny in jack pine is supported by the results of evaluation in populations from two adjacent landscapes in the southern part of the Canadian boreal forest.
Simulation of the Effect of Spatial and Temporal Variation in Fire Regimes on the Population Viability of a Banksia Species
- Geography
- 1996
Populations of plants that rely on seeds for recovery from disturbance by fire (obligate seeders) are sensitive to regimes of frequent fire. Obligate seeders are prominent in fire-prone heathlands of…