Population genetics of the long-lived Huon pine Lagarostrobos franklinii: An endemic Tasmanian temperate rainforest tree

Alison Shapcott

doi:10.1016/S0006-3207(96)00076-6

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Population genetics of the long-lived Huon pine Lagarostrobos franklinii: An endemic Tasmanian temperate rainforest tree

Journal article

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Population genetics of the long-lived Huon pine Lagarostrobos franklinii: An endemic Tasmanian temperate rainforest tree

Alison Shapcott

Biological Conservation, Vol.80(2), pp.169-179

1997

DOI: https://doi.org/10.1016/S0006-3207(96)00076-6

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Abstract

Environmental Sciences

Biological Sciences

Agricultural and Veterinary Sciences

genetic diversity

persistence

long-lived tree

temperate rainforest

Podocarpaceae

conservation

Genetic diversity, within and among natural populations at 32 sites, of the long-lived temperate rainforest Huon pine tree Lagarostrobos franklinii was assessed using isozymes. Overall, genetic diversity, based on six enzyme loci, was low (A = 1·6, P = 46%), both within and among populations (Fst = 0·095). The most isolated sites (Yellow Creek, Spero River, Newall Creek, Mt Read) deviated significantly from expected allelic frequencies and/or had the greatest genetic distances from other sites. Most of these isolated sites are currently unprotected. Genotype frequencies within most sites (20 out of 32) deviated significantly from Hardy-Weinberg equilibrium expectations (p < 0·0015) and had high fixation indexes indicative of effective inbreeding. The high levels of inbreeding observed by these measures at some sites did not reflect isolation from gene flow. The most similar pairs of populations were located in the headwaters of the three major habitat catchments, which originate within close geographic proximity of one another. Over 90% of individuals at Mt Read, the highest altitude site known, were genetically identical. This, combined with other evidence, suggests that the population at this site is principally vegetatively derived and may be exceptionally old. Inbreeding and low diversity does not appear to have affected the species' ability to persist for long periods.

Details

Title: Population genetics of the long-lived Huon pine Lagarostrobos franklinii: An endemic Tasmanian temperate rainforest tree
Authors: Alison Shapcott (Author) - Parks and Wildlife Commission of the Northern Territory
Publication details: Biological Conservation, Vol.80(2), pp.169-179
Publisher: Elsevier BV
Date published: 1997
DOI: 10.1016/S0006-3207(96)00076-6
ISSN: 0006-3207
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99448841102621
Output Type: Journal article

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Web Of Science research areas: Biodiversity Conservation; Ecology; Environmental Sciences