Some species survive by serotiny
or geospory, terms that are conveniently defined in the book, as is the term scleromorphy, an adaptation that arises in response to nutrient-poor soils but is also a secondary adaption to drought and fire.
lanatus exhibit a form of serotiny
(canopy seed storage) in that the cones do not disintegrate, but gradually dry out, retaining the partially exposed abscised seeds within the desiccated cone (Grobbelaar, 1989, 2004).
Traits such as serotiny
that are clear fire adaptations (Bond and Midgley 2001) have not been documented for woody plants in SDTFs and bark thickness of SDTF species, although greater than that of MTF species, is considerably lesser than that of fire-tolerant savanna species (references in Table 2).
, a process by which certain conifers create fertilized yet sealed cones that must be heated to open, was discovered by plant ecologists, and this led to an understanding that the forests that grew on 80 percent of the Yellowstone landscape do not do so in spite of fire, they exist as we see them because of fire.
Unlike the northern ecotypes, jack pines in the southern disjuncts tend to have very low levels of serotiny
, and thus release seeds in the absence of fire (Abrams, 1984; Conkey et al., 1995; Gauthier et al., 1993a, 1996; Radeloff et al., 2004; Barton and Grenier, 2008).
Vega JA, Fernandez C, Perez P, Fonturbel T (2008) The influence of tire severity, serotiny
, and post-fire management on Pinus pinaster Ait.
Mature seeds are retained in persistent cones, and seed release is often delayed, building up a canopy-stored seed bank (i.e., serotiny
, geography, and fire in the Pine Barrens of New Jersey.
Apparently, one third of the lodgepole pines in Yellowstone have a special adaptation to fire, called serotiny
. Their pinecones only open and release seeds when exposed to intense heat, thus endorsing the idea that "nature" has its own way of making use of what humans often consider a disaster (Conniff, "Yellowstone's 'Rebirth'" 42).
has evolved independently and repeatedly in a number of widely separated plant taxa (Simon et al.
Each chapter is an excellent contemporary review of knowledge, well stocked with illustrative cases: the phylogenetics of serotiny
in Mediterranean pines, fire-dependent cues for seed dispersal, fire-generated cues for seed germination and flowering, smoke as a stimulant of regeneration, human history and the historical ecology of fire, to cite some examples.
Lodgepole pine vary greatly in the proportion of serotinous and non-serotinous cones (e.g., Schoennagel et al., 2003), but many of the stands affected by the current outbreak in Colorado are composed of predominantly serotinous trees; e.g., a recent survey of lodgepole pine stands on the west side of Rocky Mountain National Park found a mean serotiny
per stand of 63% (C.