Persistence and stochasticity are key determinants of genetic diversity in plants associated with banded iron formation inselbergs

Margaret Byrne, Siegfried L. Krauss, Melissa A. Millar, Carole P. Elliott, David J. Coates, Colin Yates, Rachel M. Binks, Paul Nevill, Heidi Nistelberger, Grant Wardell-Johnson, Todd Robinson, Ryonen Butcher, Matthew Barrett, Neil Gibson

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The high species endemism characteristic of many of the world's terrestrial island systems provides a model for studying evolutionary patterns and processes, yet there has been no synthesis of studies to provide a systematic evaluation of terrestrial island systems in this context. The banded iron formations (BIFs) of south-western Australia are ancient terrestrial island formations occurring within a mosaic of alluvial clay soils, sandplains and occasional granite outcropping, across an old, gently undulating, highly weathered, plateau. Notably, these BIFs display exceptionally high beta plant diversity. Here, we address the determinants and consequences of genetic diversity for BIF-associated plant species through a comprehensive review of all studies on species distribution modelling, phylogenetics, phylogeography, population genetics, life-history traits and ecology. The taxa studied are predominantly narrowly endemic to individual or a few BIF ranges, but some have more regional distributions occurring both on and off BIFs. We compared genetic data for these BIF-endemic species to other localised species globally to assess whether the unique history and ancestry of BIF landscapes has driven distinct genetic responses in plants restricted to this habitat. We also assessed the influence of life-history parameters on patterns of genetic diversity. We found that BIF-endemic species display similar patterns of genetic diversity and structure to other species with localised distributions. Despite often highly restricted distributions, large effective population size or clonal reproduction appears to provide these BIF-endemic species with ecological and evolutionary resilience to environmental stochasticity. We conclude that persistence and stochasticity are key determinants of genetic diversity and its spatial structure within BIF-associated plant species, and that these are key evolutionary processes that should be considered in understanding the biogeography of inselbergs worldwide.

Original languageEnglish
Pages (from-to)753-772
Number of pages20
JournalBiological Reviews
Volume94
Issue number3
DOIs
Publication statusPublished - 1 Jun 2019

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Iron
iron
genetic variation
indigenous species
Islands
biogeography
life history
Phylogeography
Western Australia
South Australia
alluvial soils
Genetic Structures
granite
Population Genetics
Ecology
phylogeography
Population Density
clay soils
Reproduction
Ecosystem

Cite this

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title = "Persistence and stochasticity are key determinants of genetic diversity in plants associated with banded iron formation inselbergs",
abstract = "The high species endemism characteristic of many of the world's terrestrial island systems provides a model for studying evolutionary patterns and processes, yet there has been no synthesis of studies to provide a systematic evaluation of terrestrial island systems in this context. The banded iron formations (BIFs) of south-western Australia are ancient terrestrial island formations occurring within a mosaic of alluvial clay soils, sandplains and occasional granite outcropping, across an old, gently undulating, highly weathered, plateau. Notably, these BIFs display exceptionally high beta plant diversity. Here, we address the determinants and consequences of genetic diversity for BIF-associated plant species through a comprehensive review of all studies on species distribution modelling, phylogenetics, phylogeography, population genetics, life-history traits and ecology. The taxa studied are predominantly narrowly endemic to individual or a few BIF ranges, but some have more regional distributions occurring both on and off BIFs. We compared genetic data for these BIF-endemic species to other localised species globally to assess whether the unique history and ancestry of BIF landscapes has driven distinct genetic responses in plants restricted to this habitat. We also assessed the influence of life-history parameters on patterns of genetic diversity. We found that BIF-endemic species display similar patterns of genetic diversity and structure to other species with localised distributions. Despite often highly restricted distributions, large effective population size or clonal reproduction appears to provide these BIF-endemic species with ecological and evolutionary resilience to environmental stochasticity. We conclude that persistence and stochasticity are key determinants of genetic diversity and its spatial structure within BIF-associated plant species, and that these are key evolutionary processes that should be considered in understanding the biogeography of inselbergs worldwide.",
keywords = "genetic differentiation, genetic diversity, inselbergs, island biogeography, life-history traits, persistence, phylogenetics, phylogeography, pollination syndrome, species distribution modelling",
author = "Margaret Byrne and Krauss, {Siegfried L.} and Millar, {Melissa A.} and Elliott, {Carole P.} and Coates, {David J.} and Colin Yates and Binks, {Rachel M.} and Paul Nevill and Heidi Nistelberger and Grant Wardell-Johnson and Todd Robinson and Ryonen Butcher and Matthew Barrett and Neil Gibson",
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Persistence and stochasticity are key determinants of genetic diversity in plants associated with banded iron formation inselbergs. / Byrne, Margaret; Krauss, Siegfried L.; Millar, Melissa A.; Elliott, Carole P.; Coates, David J.; Yates, Colin; Binks, Rachel M.; Nevill, Paul; Nistelberger, Heidi; Wardell-Johnson, Grant; Robinson, Todd; Butcher, Ryonen; Barrett, Matthew; Gibson, Neil.

In: Biological Reviews, Vol. 94, No. 3, 01.06.2019, p. 753-772.

Research output: Contribution to journalArticle

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T1 - Persistence and stochasticity are key determinants of genetic diversity in plants associated with banded iron formation inselbergs

AU - Byrne, Margaret

AU - Krauss, Siegfried L.

AU - Millar, Melissa A.

AU - Elliott, Carole P.

AU - Coates, David J.

AU - Yates, Colin

AU - Binks, Rachel M.

AU - Nevill, Paul

AU - Nistelberger, Heidi

AU - Wardell-Johnson, Grant

AU - Robinson, Todd

AU - Butcher, Ryonen

AU - Barrett, Matthew

AU - Gibson, Neil

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KW - genetic differentiation

KW - genetic diversity

KW - inselbergs

KW - island biogeography

KW - life-history traits

KW - persistence

KW - phylogenetics

KW - phylogeography

KW - pollination syndrome

KW - species distribution modelling

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