Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota)
Abstract Aim The relative importance of long‐distance dispersal versus vicariance in determining the distribution of lichen‐forming fungi remains unresolved. Here, we examined diversity and distributions in a cosmopolitan lichen‐forming fungal species complex, Rhizoplaca melanophthalma sensu lato (A...
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crwiley:10.1111/jbi.12118 2024-09-15T17:44:02+00:00 Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) Leavitt, Steven D. Fernández‐Mendoza, Fernando Pérez‐Ortega, Sergio Sohrabi, Mohammad Divakar, Pradeep K. Vondrák, Jan Thorsten Lumbsch, H. Clair, Larry L. St. Comes, Hans‐Peter 2013 http://dx.doi.org/10.1111/jbi.12118 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.12118 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.12118 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 40, issue 9, page 1792-1806 ISSN 0305-0270 1365-2699 journal-article 2013 crwiley https://doi.org/10.1111/jbi.12118 2024-08-06T04:15:26Z Abstract Aim The relative importance of long‐distance dispersal versus vicariance in determining the distribution of lichen‐forming fungi remains unresolved. Here, we examined diversity and distributions in a cosmopolitan lichen‐forming fungal species complex, Rhizoplaca melanophthalma sensu lato (Ascomycota), across a broad, intercontinental geographical distribution. We sought to determine the temporal context of diversification and the impacts of past climatic fluctuations on demographic dynamics within this group. Location Antarctica, Asia, Europe, North America and South America. Methods We obtained molecular sequence data from a total of 240 specimens of R. melanophthalma s.l. collected across five continents. We assessed the monophyly of candidate species using individual gene trees and a tree from a seven‐locus concatenated data set. Divergence times and relationships among candidate species were evaluated using a multilocus coalescent‐based species tree approach. Speciation probabilities were estimated using the coalescent‐based species delimitation program bpp . We also calculated statistics on molecular diversity and population demographics for independent lineages. Main conclusions Our analyses of R. melanophthalma s.l. collected from five continents supported the presence of six species‐level lineages within this complex. Based on current sampling, two of these lineages were found to have broad intercontinental distributions, while the other four were limited to western North America. Of the six lineages, five were found on a single mountain in the western USA and the sixth occurred no more than 200 km away from this mountain. Our estimates of divergence times suggest that Pleistocene glacial cycles played an important role in species diversification within this group. At least three lineages show evidence of recent or ongoing population expansion. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Journal of Biogeography 40 9 1792 1806 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Aim The relative importance of long‐distance dispersal versus vicariance in determining the distribution of lichen‐forming fungi remains unresolved. Here, we examined diversity and distributions in a cosmopolitan lichen‐forming fungal species complex, Rhizoplaca melanophthalma sensu lato (Ascomycota), across a broad, intercontinental geographical distribution. We sought to determine the temporal context of diversification and the impacts of past climatic fluctuations on demographic dynamics within this group. Location Antarctica, Asia, Europe, North America and South America. Methods We obtained molecular sequence data from a total of 240 specimens of R. melanophthalma s.l. collected across five continents. We assessed the monophyly of candidate species using individual gene trees and a tree from a seven‐locus concatenated data set. Divergence times and relationships among candidate species were evaluated using a multilocus coalescent‐based species tree approach. Speciation probabilities were estimated using the coalescent‐based species delimitation program bpp . We also calculated statistics on molecular diversity and population demographics for independent lineages. Main conclusions Our analyses of R. melanophthalma s.l. collected from five continents supported the presence of six species‐level lineages within this complex. Based on current sampling, two of these lineages were found to have broad intercontinental distributions, while the other four were limited to western North America. Of the six lineages, five were found on a single mountain in the western USA and the sixth occurred no more than 200 km away from this mountain. Our estimates of divergence times suggest that Pleistocene glacial cycles played an important role in species diversification within this group. At least three lineages show evidence of recent or ongoing population expansion. |
author2 |
Comes, Hans‐Peter |
format |
Article in Journal/Newspaper |
author |
Leavitt, Steven D. Fernández‐Mendoza, Fernando Pérez‐Ortega, Sergio Sohrabi, Mohammad Divakar, Pradeep K. Vondrák, Jan Thorsten Lumbsch, H. Clair, Larry L. St. |
spellingShingle |
Leavitt, Steven D. Fernández‐Mendoza, Fernando Pérez‐Ortega, Sergio Sohrabi, Mohammad Divakar, Pradeep K. Vondrák, Jan Thorsten Lumbsch, H. Clair, Larry L. St. Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
author_facet |
Leavitt, Steven D. Fernández‐Mendoza, Fernando Pérez‐Ortega, Sergio Sohrabi, Mohammad Divakar, Pradeep K. Vondrák, Jan Thorsten Lumbsch, H. Clair, Larry L. St. |
author_sort |
Leavitt, Steven D. |
title |
Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
title_short |
Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
title_full |
Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
title_fullStr |
Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
title_full_unstemmed |
Local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( Rhizoplaca, Ascomycota) |
title_sort |
local representation of global diversity in a cosmopolitan lichen‐forming fungal species complex ( rhizoplaca, ascomycota) |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/jbi.12118 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.12118 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.12118 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Journal of Biogeography volume 40, issue 9, page 1792-1806 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jbi.12118 |
container_title |
Journal of Biogeography |
container_volume |
40 |
container_issue |
9 |
container_start_page |
1792 |
op_container_end_page |
1806 |
_version_ |
1810491333659328512 |