Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient
Abstract Climatically extreme regions such as the polar deserts of the McMurdo Dry Valleys (78° S) in Continental Antarctica are key areas for a better understanding of changes in ecosystems. Therefore, it is particularly important to analyze and communicate current patterns of biodiversity in these...
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Springer Science and Business Media LLC
2020
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crspringernat:10.1007/s00300-020-02754-8 2023-05-15T14:05:42+02:00 Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient Wagner, Monika Bathke, Arne C. Cary, S. Craig Green, T. G. Allan Junker, Robert R. Trutschnig, Wolfgang Ruprecht, Ulrike Austrian Science Fund Paris Lodron University of Salzburg 2020 http://dx.doi.org/10.1007/s00300-020-02754-8 https://link.springer.com/content/pdf/10.1007/s00300-020-02754-8.pdf https://link.springer.com/article/10.1007/s00300-020-02754-8/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Polar Biology volume 43, issue 12, page 1967-1983 ISSN 0722-4060 1432-2056 General Agricultural and Biological Sciences journal-article 2020 crspringernat https://doi.org/10.1007/s00300-020-02754-8 2022-01-04T07:12:04Z Abstract Climatically extreme regions such as the polar deserts of the McMurdo Dry Valleys (78° S) in Continental Antarctica are key areas for a better understanding of changes in ecosystems. Therefore, it is particularly important to analyze and communicate current patterns of biodiversity in these sensitive areas, where precipitation mostly occurs in form of snow and liquid water is rare. Humidity provided by dew, clouds, and fog are the main water sources, especially for rock-dwelling crustose lichens as one of the most common vegetation-forming organisms. We investigated the diversity and interaction specificity of myco-/photobiont associations of 232 crustose lichen specimens, collected along an elevational gradient (171–959 m a.s.l.) within the McMurdo Dry Valleys. The mycobiont species and photobiont OTUs were identified by using three markers each (nrITS, mtSSU, RPB1, and nrITS, psbJ-L, COX2). Elevation, positively associated with water availability, turned out to be the key factor explaining most of the distribution patterns of the mycobionts. Pairwise comparisons showed Lecidea cancriformis and Rhizoplaca macleanii to be significantly more common at higher elevations and Carbonea vorticosa and Lecidea polypycnidophora at lower elevations. Lichen photobionts were dominated by the globally distributed Trebouxia OTU, Tr_ A02 which occurred at all habitats. Network specialization resulting from myco-/photobiont bipartite network structure varied with elevation and associated abiotic factors. Along an elevational gradient, the spatial distribution, diversity, and genetic variability of the lichen symbionts appear to be mainly influenced by improved water relations at higher altitudes. Article in Journal/Newspaper Antarc* Antarctica McMurdo Dry Valleys Polar Biology Springer Nature (via Crossref) McMurdo Dry Valleys Polar Biology 43 12 1967 1983 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Agricultural and Biological Sciences |
spellingShingle |
General Agricultural and Biological Sciences Wagner, Monika Bathke, Arne C. Cary, S. Craig Green, T. G. Allan Junker, Robert R. Trutschnig, Wolfgang Ruprecht, Ulrike Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
topic_facet |
General Agricultural and Biological Sciences |
description |
Abstract Climatically extreme regions such as the polar deserts of the McMurdo Dry Valleys (78° S) in Continental Antarctica are key areas for a better understanding of changes in ecosystems. Therefore, it is particularly important to analyze and communicate current patterns of biodiversity in these sensitive areas, where precipitation mostly occurs in form of snow and liquid water is rare. Humidity provided by dew, clouds, and fog are the main water sources, especially for rock-dwelling crustose lichens as one of the most common vegetation-forming organisms. We investigated the diversity and interaction specificity of myco-/photobiont associations of 232 crustose lichen specimens, collected along an elevational gradient (171–959 m a.s.l.) within the McMurdo Dry Valleys. The mycobiont species and photobiont OTUs were identified by using three markers each (nrITS, mtSSU, RPB1, and nrITS, psbJ-L, COX2). Elevation, positively associated with water availability, turned out to be the key factor explaining most of the distribution patterns of the mycobionts. Pairwise comparisons showed Lecidea cancriformis and Rhizoplaca macleanii to be significantly more common at higher elevations and Carbonea vorticosa and Lecidea polypycnidophora at lower elevations. Lichen photobionts were dominated by the globally distributed Trebouxia OTU, Tr_ A02 which occurred at all habitats. Network specialization resulting from myco-/photobiont bipartite network structure varied with elevation and associated abiotic factors. Along an elevational gradient, the spatial distribution, diversity, and genetic variability of the lichen symbionts appear to be mainly influenced by improved water relations at higher altitudes. |
author2 |
Austrian Science Fund Paris Lodron University of Salzburg |
format |
Article in Journal/Newspaper |
author |
Wagner, Monika Bathke, Arne C. Cary, S. Craig Green, T. G. Allan Junker, Robert R. Trutschnig, Wolfgang Ruprecht, Ulrike |
author_facet |
Wagner, Monika Bathke, Arne C. Cary, S. Craig Green, T. G. Allan Junker, Robert R. Trutschnig, Wolfgang Ruprecht, Ulrike |
author_sort |
Wagner, Monika |
title |
Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
title_short |
Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
title_full |
Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
title_fullStr |
Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
title_full_unstemmed |
Myco- and photobiont associations in crustose lichens in the McMurdo Dry Valleys (Antarctica) reveal high differentiation along an elevational gradient |
title_sort |
myco- and photobiont associations in crustose lichens in the mcmurdo dry valleys (antarctica) reveal high differentiation along an elevational gradient |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s00300-020-02754-8 https://link.springer.com/content/pdf/10.1007/s00300-020-02754-8.pdf https://link.springer.com/article/10.1007/s00300-020-02754-8/fulltext.html |
geographic |
McMurdo Dry Valleys |
geographic_facet |
McMurdo Dry Valleys |
genre |
Antarc* Antarctica McMurdo Dry Valleys Polar Biology |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys Polar Biology |
op_source |
Polar Biology volume 43, issue 12, page 1967-1983 ISSN 0722-4060 1432-2056 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-020-02754-8 |
container_title |
Polar Biology |
container_volume |
43 |
container_issue |
12 |
container_start_page |
1967 |
op_container_end_page |
1983 |
_version_ |
1766277578587373568 |