Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens
Aim: The homogenisation of historically isolated gene pools has been recognised as one of the most serious conservation problems in the Antarctic. Lichens are the dominant components of terrestrial biotas in the Antarctic and in high mountain ranges of southern South America. We study the effects of...
Published in: | Journal of Biogeography |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | https://curis.ku.dk/portal/da/publications/effects-of-dispersal-strategy-and-migration-history-on-genetic-diversity-and-population-structure-of-antarctic-lichens(f7641deb-af00-4239-8422-7b8524340937).html https://doi.org/10.1111/jbi.14101 https://curis.ku.dk/ws/files/273375561/Effects_of_dispersal_strategy_and_migration_history_on_genetic_diversity_and_population_structure_of_Antarctic_lichens.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/f7641deb-af00-4239-8422-7b8524340937 2024-06-09T07:41:00+00:00 Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens Lagostina, Elisa Andreev, Mikhail Dal Grande, Francesco Grewe, Felix Lorenz, Aline Lumbsch, H. Thorsten Rozzi, Ricardo Ruprecht, Ulrike Sancho, Leopoldo García Søchting, Ulrik Scur, Mayara Wirtz, Nora Printzen, Christian 2021 application/pdf https://curis.ku.dk/portal/da/publications/effects-of-dispersal-strategy-and-migration-history-on-genetic-diversity-and-population-structure-of-antarctic-lichens(f7641deb-af00-4239-8422-7b8524340937).html https://doi.org/10.1111/jbi.14101 https://curis.ku.dk/ws/files/273375561/Effects_of_dispersal_strategy_and_migration_history_on_genetic_diversity_and_population_structure_of_Antarctic_lichens.pdf eng eng info:eu-repo/semantics/openAccess Lagostina , E , Andreev , M , Dal Grande , F , Grewe , F , Lorenz , A , Lumbsch , H T , Rozzi , R , Ruprecht , U , Sancho , L G , Søchting , U , Scur , M , Wirtz , N & Printzen , C 2021 , ' Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens ' , Journal of Biogeography , vol. 48 , no. 7 , pp. 1635-1653 . https://doi.org/10.1111/jbi.14101 approximate Bayesian computation biodiversity Cetraria aculeata climate change conservation microsatellites Parmeliaceae U. aurantiacoatra Usnea antarctica article 2021 ftcopenhagenunip https://doi.org/10.1111/jbi.14101 2024-05-16T11:29:20Z Aim: The homogenisation of historically isolated gene pools has been recognised as one of the most serious conservation problems in the Antarctic. Lichens are the dominant components of terrestrial biotas in the Antarctic and in high mountain ranges of southern South America. We study the effects of dispersal strategy and migration history on their genetic structure to better understand the importance of these processes and their interplay in shaping population structure as well as their relevance for conservation. Location: Maritime Antarctic and southern South America. Methods: Populations of three fruticose lichen species, Usnea aurantiacoatra, U. antarctica and Cetraria aculeata, were collected in different localities in the Maritime Antarctic and southern South America. Usnea aurantiacoatra reproduces sexually by ascospores, whereas the other two species mostly disperse asexually by symbiotic diaspores. Samples were genotyped at 8–22 microsatellite loci. Different diversity and variance metrics, Bayesian cluster analyses and Discriminant Analysis of Principal Components (DAPC) were used to study population genetic structure. Historical migration patterns between southern South America and the Antarctic were investigated for U. aurantiacoatra and C. aculeata by approximate Bayesian computation (ABC). Results: The two vegetative species display lower levels of genetic diversity than U. aurantiacoatra. Antarctic populations of C. aculeata and South American populations of U. aurantiacoatra display much stronger genetic differentiation than their respective counterparts on the opposite side of the Drake Passage. Usnea antarctica was not found in South America but shows comparably low levels of genetic differentiation in Antarctica as those revealed for U. aurantiacoatra. Phylogeographic histories of lichens in the region differ strongly with recent colonisation in some instances and potential in situ persistence during Last Glacial Maximum (LGM) in others. Patterns of genetic diversity indicate the presence of ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Drake Passage Usnea antarctica University of Copenhagen: Research Antarctic Drake Passage The Antarctic Journal of Biogeography 48 7 1635 1653 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
approximate Bayesian computation biodiversity Cetraria aculeata climate change conservation microsatellites Parmeliaceae U. aurantiacoatra Usnea antarctica |
spellingShingle |
approximate Bayesian computation biodiversity Cetraria aculeata climate change conservation microsatellites Parmeliaceae U. aurantiacoatra Usnea antarctica Lagostina, Elisa Andreev, Mikhail Dal Grande, Francesco Grewe, Felix Lorenz, Aline Lumbsch, H. Thorsten Rozzi, Ricardo Ruprecht, Ulrike Sancho, Leopoldo García Søchting, Ulrik Scur, Mayara Wirtz, Nora Printzen, Christian Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
topic_facet |
approximate Bayesian computation biodiversity Cetraria aculeata climate change conservation microsatellites Parmeliaceae U. aurantiacoatra Usnea antarctica |
description |
Aim: The homogenisation of historically isolated gene pools has been recognised as one of the most serious conservation problems in the Antarctic. Lichens are the dominant components of terrestrial biotas in the Antarctic and in high mountain ranges of southern South America. We study the effects of dispersal strategy and migration history on their genetic structure to better understand the importance of these processes and their interplay in shaping population structure as well as their relevance for conservation. Location: Maritime Antarctic and southern South America. Methods: Populations of three fruticose lichen species, Usnea aurantiacoatra, U. antarctica and Cetraria aculeata, were collected in different localities in the Maritime Antarctic and southern South America. Usnea aurantiacoatra reproduces sexually by ascospores, whereas the other two species mostly disperse asexually by symbiotic diaspores. Samples were genotyped at 8–22 microsatellite loci. Different diversity and variance metrics, Bayesian cluster analyses and Discriminant Analysis of Principal Components (DAPC) were used to study population genetic structure. Historical migration patterns between southern South America and the Antarctic were investigated for U. aurantiacoatra and C. aculeata by approximate Bayesian computation (ABC). Results: The two vegetative species display lower levels of genetic diversity than U. aurantiacoatra. Antarctic populations of C. aculeata and South American populations of U. aurantiacoatra display much stronger genetic differentiation than their respective counterparts on the opposite side of the Drake Passage. Usnea antarctica was not found in South America but shows comparably low levels of genetic differentiation in Antarctica as those revealed for U. aurantiacoatra. Phylogeographic histories of lichens in the region differ strongly with recent colonisation in some instances and potential in situ persistence during Last Glacial Maximum (LGM) in others. Patterns of genetic diversity indicate the presence of ... |
format |
Article in Journal/Newspaper |
author |
Lagostina, Elisa Andreev, Mikhail Dal Grande, Francesco Grewe, Felix Lorenz, Aline Lumbsch, H. Thorsten Rozzi, Ricardo Ruprecht, Ulrike Sancho, Leopoldo García Søchting, Ulrik Scur, Mayara Wirtz, Nora Printzen, Christian |
author_facet |
Lagostina, Elisa Andreev, Mikhail Dal Grande, Francesco Grewe, Felix Lorenz, Aline Lumbsch, H. Thorsten Rozzi, Ricardo Ruprecht, Ulrike Sancho, Leopoldo García Søchting, Ulrik Scur, Mayara Wirtz, Nora Printzen, Christian |
author_sort |
Lagostina, Elisa |
title |
Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
title_short |
Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
title_full |
Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
title_fullStr |
Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
title_full_unstemmed |
Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens |
title_sort |
effects of dispersal strategy and migration history on genetic diversity and population structure of antarctic lichens |
publishDate |
2021 |
url |
https://curis.ku.dk/portal/da/publications/effects-of-dispersal-strategy-and-migration-history-on-genetic-diversity-and-population-structure-of-antarctic-lichens(f7641deb-af00-4239-8422-7b8524340937).html https://doi.org/10.1111/jbi.14101 https://curis.ku.dk/ws/files/273375561/Effects_of_dispersal_strategy_and_migration_history_on_genetic_diversity_and_population_structure_of_Antarctic_lichens.pdf |
geographic |
Antarctic Drake Passage The Antarctic |
geographic_facet |
Antarctic Drake Passage The Antarctic |
genre |
Antarc* Antarctic Antarctica Drake Passage Usnea antarctica |
genre_facet |
Antarc* Antarctic Antarctica Drake Passage Usnea antarctica |
op_source |
Lagostina , E , Andreev , M , Dal Grande , F , Grewe , F , Lorenz , A , Lumbsch , H T , Rozzi , R , Ruprecht , U , Sancho , L G , Søchting , U , Scur , M , Wirtz , N & Printzen , C 2021 , ' Effects of dispersal strategy and migration history on genetic diversity and population structure of Antarctic lichens ' , Journal of Biogeography , vol. 48 , no. 7 , pp. 1635-1653 . https://doi.org/10.1111/jbi.14101 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/jbi.14101 |
container_title |
Journal of Biogeography |
container_volume |
48 |
container_issue |
7 |
container_start_page |
1635 |
op_container_end_page |
1653 |
_version_ |
1801369416371273728 |