By William J. Bond, Brian W. van Wilgen (auth.)
Large areas of the realm are on a regular basis burnt both intentionally or obviously. even though, regardless of the frequent prevalence of such fire-prone ecosystems, and enormous physique of study on plant inhabitants biology when it comes to hearth, earlier there have purely been constrained makes an attempt at a coherent conceptual synthesis of the sector to be used by means of scholars or researchers.
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Additional resources for Fire and Plants
1). What accounts for stability in some populations and variability in o thers? How is fire implicated in regulating population size?
Despite high fuel loads. Rainforests are dominated by large trees with relatively sparse canopies of live fo liage. Dead material is restricted to the transient litter layer below the tree canopies. • 1990a). Van Wagner (1977) proposed a mode l for predicting conditions that would lead to crown fires in coniferous timber stands. The model assumes that crown fi res are dependent on surface fires for active spreading. In order for crown fires to develop, surface fi res have to reach a critical intensity ( I, kW m- I ) 28 Why and how do ecosystems burn?
There is even a serotinous heath (Erica sessifif/ora) in the Cape fynbos. Seroti nous species dominate many of the communities in wh ich they occur, and there is increasing interest in their biology (see Lamont et 01.. 1991 b for a recent review). Serotiny is not unique to fire environments but is common in some arid land plants where good rains, and not fire . 1992). The degree of serotiny varies greatly both between and within species. • 1977). In Bishop pine. 5 Examples of serotiny. showing pre-burn condition on the left and postburn condition on the right.