A Model of Fire Selection for Serotiny in Lodgepole Pine

Perry, David A.; Lotan, James E.

doi:10.2307/2407658

Cited by 37 publications

(23 citation statements)

References 9 publications

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“…The genetic controls on cone production and serotiny are not understood, although the role of fire as a selective force on production of serotinous cones has been suggested (Perry and Lotan, 1979;Lamont et al, 1991;Schwilk and Ackerly, 2001;Schoennagel et al, 2003), and Yeaman and Jarvis (2006) report an influence of regional heterogeneity on genetic variance in lodgepole pine. Radeloff et al (2004) suggest the potential for spatial control of genetic variability within jack pine (Pinus banksiana), also a serotinous species, in relation to landscape variation in fire regime.…”

Section: Discussionmentioning

confidence: 99%

Cone production in young post-fire Pinus contorta stands in Greater Yellowstone (USA)

Turner

Romme

2007

Forest Ecology and Management

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Section: Discussionmentioning

confidence: 99%

Cone production in young post-fire Pinus contorta stands in Greater Yellowstone (USA)

Turner

Romme

2007

Forest Ecology and Management

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“…Stand-level variability of serotiny has been related to differences in fire disturbance, and it was reported that serotiny levels were highest where fires were frequent (Givnish, 1981;Muir and Lotan, 1985;Motzkin et al, 2002). Models showed that the variability in serotiny in Pinus contorta can be the result of variability in fire regimes (Hartl, 1979;Perry and Lotan, 1979) and the same was found for a serotinous Australian Banksia species (Enright et al, 1998). The variability found in stand-level serotiny can exhibit strong spatial pattern.…”

Section: Introductionmentioning

confidence: 95%

Spatial patterns of cone serotiny in Pinus banksiana in relation to fire disturbance

Radeloff

Mladenoff

Guries

et al. 2004

Forest Ecology and Management

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“…However, genetic implications of forest management practices and natural disturbances are largely unknown for most Canadian species. It has been generally speculated that forest fires can have a significant effect on gene frequencies and genetic drift (e.g., Teich 1970;Perry and Lotan 1979;Chapman and Crow 1981). However, there is little or no information on the genetic effects of natural or prescribed forest fires.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity impacts of forest fires, forest harvesting, and alternative reforestation practices in black spruce (Picea mariana)

Rajora

Pluhar

2002

Theor Appl Genet

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Benchmarks were established for genetic diversity inherent in natural mature populations, and genetic diversity impacts of forest fires, clearcut harvesting and alternative natural and artificial silvicultural regeneration practices were determined in black spruce (Picea mariana). Allozymes of 32 loci were used to determine and compare genetic diversity and genetic relationships of adjacent or nearby four stand types: post-fire natural mature (FNM), post-fire natural young (FNR), post-harvest natural young (HNR) and post-harvest plantation (PLT), of black spruce at each of the four study sites located in two ecoregions in Manitoba: Ecoregion 90-Lac Seul Upland (Eastern) and Ecoregion 158 - Mid-Boreal Lowland (Northern). Both allelic- and genotypic-based genetic diversity parameters, as well as latent genetic potential, were determined. Black spruce populations showed typical moderate to high levels of allozyme genetic diversity. The mean genetic diversity parameters over the 16 black spruce populations sampled were as follows: percent loci polymorphic - 67%, mean number of alleles per locus - 2.52, effective number of alleles per locus - 1.70, observed heterozygosity - 0.222, expected heterozygosity - 0.308, mean number of observed genotypes per locus - 3.65, mean number of expected genotypes per locus - 5.03, genotype additivity (observed) - 116.8, genotype additivity (expected) - 161, genotype multiplicity (observed) - 6.16 x 10(15), genotype multiplicity (expected) - 2.06 x 10(19) and latent genetic potential - 26.12. The four stand types (FNM, FNR, HNR and PLT) had comparable and statistically similar genetic diversity levels at each of the four study sites as well as overall. No significant differences in black spruce genetic diversity levels were observed between the two ecoregions in Manitoba, as well as between the post-fire and post-harvest regenerated stands. No particular order of genetic relatedness among the four stand types was observed. Black spruce populations showed some sort of site-related differentiation in their genetic constitution. Allelic heterogeneity and genetic distances among populations within stand types and among four stand types suggest that the genetic diversity was maintained at the landscape level in black spruce. The results of our study demonstrate that forest fires and currently used clearcut harvesting, and alternative natural and artificial silvicultural regeneration practices, do not adversely affect genetic diversity in black spruce, and that the genetic diversity effects of clearcut harvesting are not significantly different from those due to forest fires in black spruce.

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A Model of Fire Selection for Serotiny in Lodgepole Pine

Cited by 37 publications

References 9 publications

Cone production in young post-fire Pinus contorta stands in Greater Yellowstone (USA)

Cone production in young post-fire Pinus contorta stands in Greater Yellowstone (USA)

Spatial patterns of cone serotiny in Pinus banksiana in relation to fire disturbance

Genetic diversity impacts of forest fires, forest harvesting, and alternative reforestation practices in black spruce (Picea mariana)

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