Phylogeography, classification and conservation of pink zieria (Zieria veronicea; Rutaceae): influence of changes in climate, geology and sea level in south-eastern Australia

Neal, Will C.; James, Elizabeth A.; Bayly, Michael J.

doi:10.1007/s00606-019-01589-z

Cited by 9 publications

(10 citation statements)

References 49 publications

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“…(Freeman et al 2001), Hardenbergia violacea (Larcombe et al 2011), Correa Andrews (French et al 2016), Zieria veronicea Sm. (Neal et al 2019), Xanthorrhoea (McLay et al 2021) and a range of other species (Worth et al 2017). Evidence suggests that at least some areas of the Bassian Plain were covered in eucalypt woodland habitat (Hope 1978(Hope , 1994Kirkpatrick and Fowler 1998) which could have been suitable for S. parvifolium, S. vexilliferum var.…”

Section: Broad Biogeographic Patterns In Spyridiummentioning

confidence: 99%

Big trees of small baskets: phylogeny of the Australian genus

Clowes

Fowler²,

Fahey³

et al. 2022

Aust. Syst. Bot.

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Spyridium Fenzl is a genus of ~45 species endemic to south-western and south-eastern Australia. This study provides the most comprehensive phylogenies of Spyridium to date, analysing both entire chloroplast genomes and the nuclear ribosomal array (18S–5.8S–26S). There was substantial incongruence between the chloroplast and nuclear phylogenies, creating phylogenetic uncertainty, but some clear relationships and biogeographic patterns could be established. Analyses support the monophyly of Spyridium, identifying an early east–west split at the base of the nuclear phylogeny and deep divergences of New South Wales and Tasmanian endemic clades. We also found evidence of more recent dispersal events between eastern and western Australia and between Tasmania and the mainland. Eleven taxa were found to be monophyletic in the nrDNA phylogeny and two were clearly polyphyletic (S. eriocephalum Fenzl and S. phylicoides Reissek). Although the polyphyly of S. eriocephalum correlates with the two varieties, suggesting distinct taxa, further research is required on S. phylicoides.

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Section: Broad Biogeographic Patterns In Spyridiummentioning

confidence: 99%

Big trees of small baskets: phylogeny of the Australian genus

Clowes

Fowler²,

Fahey³

et al. 2022

Aust. Syst. Bot.

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“…Many Australian plants have disjunct distributions across the MDD (French et al 2016), and several studies have found that many of these species show a major genetic divergence across the MDD. This includes Eucalyptus behriana (Fahey et al 2021), Hardenbergia violacea (Larcombe et al 2011), Zieria veronicea (Neal et al 2019), Eucalyptus globulus subsp. bicostata (Jackson et al Australian state abbreviations are as follows: SA South Australia, Vic.…”

Section: Introductionmentioning

confidence: 99%

Phylogeography and classification of Dusty Miller (Spyridium parvifolium; Rhamnaceae): a morphologically variable shrub from south-east Australia

et al. 2023

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Spyridium parvifolium is a widespread and morphologically variable shrub from south-eastern Australia. Several varieties have been recognised, and there is disagreement on the accepted taxonomy between Australian states. This study investigated the phylogeography of the species and assessed genetic distinctiveness of its morphological variants. Nuclear ribosomal DNA and complete chloroplast genomes from seventy-two samples of S. parvifolium and seven samples from closely related species were sequenced and analysed using both Bayesian and maximum likelihood phylogenetic methods. The results showed incongruence in the placement of several associated taxa (S. cinereum, S. obcordatum and S. daltonii), plausibly due to long branch attraction, introgression or incomplete lineage sorting. Spyridium parvifolium was resolved as paraphyletic in both phylogenies, with accessions from west of the Murray Darling Depression divergent from those east of the Depression. We found evidence of isolation within S. parvifolium on the inland side of the Great Dividing Range and recent gene flow across Bass Strait. The variants of S. parvifolium were not supported as genetically distinct, and with the prevalence of several variants at single sites and morphological intergrades between variants, we conclude that the taxon is a single, morphologically variable species and that no infraspecific classification is warranted.

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“…The complex environmental history in southeast Australia, and its role on the evolution of temperate species, has been demonstrated by a number of phylogeographic studies (e.g. [ 28 , 29 ]). For example, intense inland aridification during the Miocene and Pliocene has been associated with major coastward contractions in mesic species [ 30 , 31 ], and rising post-glacial sea levels have driven the isolation of coastal and island populations of several terrestrial species (e.g., [ 27 , 32 , 33 ]).…”

Section: Introductionmentioning

confidence: 99%

Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change

et al. 2022

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Background Understanding how species biology may facilitate resilience to climate change remains a critical factor in detecting and protecting species at risk of extinction. Many studies have focused on the role of particular ecological traits in driving species responses, but less so on demographic history and levels of standing genetic variation. Additionally, spatial variation in the interaction of demographic and adaptive factors may further complicate prediction of species responses to environmental change. We used environmental and genomic datasets to reconstruct the phylogeographic histories of two ecologically similar and largely co-distributed freshwater fishes, the southern (Nannoperca australis) and Yarra (N. obscura) pygmy perches, to assess the degree of concordance in their responses to Plio-Pleistocene climatic changes. We described contemporary genetic diversity, phylogenetic histories, demographic histories, and historical species distributions across both species, and statistically evaluated the degree of concordance in co-occurring populations. Results Marked differences in contemporary genetic diversity, historical distribution changes and historical migration were observed across the species, with a distinct lack of genetic diversity and historical range expansion suggested for N. obscura. Although several co-occurring populations within a shared climatic refugium demonstrated concordant demographic histories, idiosyncratic population size changes were found at the range edges of the more spatially restricted species. Discordant responses between species were associated with low standing genetic variation in peripheral populations. This might have hindered adaptive potential, as documented in recent demographic declines and population extinctions for the two species. Conclusion Our results highlight both the role of spatial scale in the degree of concordance in species responses to climate change, and the importance of standing genetic variation in facilitating range shifts. Even when ecological traits are similar between species, long-term genetic diversity and historical population demography may lead to discordant responses to ongoing and future climate change.

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Phylogeography, classification and conservation of pink zieria (Zieria veronicea; Rutaceae): influence of changes in climate, geology and sea level in south-eastern Australia

Cited by 9 publications

References 49 publications

Big trees of small baskets: phylogeny of the Australian genus

Big trees of small baskets: phylogeny of the Australian genus

Phylogeography and classification of Dusty Miller (Spyridium parvifolium; Rhamnaceae): a morphologically variable shrub from south-east Australia

Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change

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