Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens
Abstract Relative growth rates (RGR) and carbon-based secondary compounds (CBSCs) were quantified in four dominant terricolous arctic-alpine mat-forming lichens with different preferences for snow cover. The aim was to evaluate the effects of snow depth, and thus snow cover duration, on lichen growt...
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2016
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Online Access: | http://dx.doi.org/10.1017/s0024282916000086 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282916000086 |
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crcambridgeupr:10.1017/s0024282916000086 2024-09-09T19:24:08+00:00 Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens BIDUSSI, Massimo SOLHAUG, Knut Asbjørn GAUSLAA, Yngvar 2016 http://dx.doi.org/10.1017/s0024282916000086 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282916000086 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms The Lichenologist volume 48, issue 3, page 237-247 ISSN 0024-2829 1096-1135 journal-article 2016 crcambridgeupr https://doi.org/10.1017/s0024282916000086 2024-06-19T04:04:21Z Abstract Relative growth rates (RGR) and carbon-based secondary compounds (CBSCs) were quantified in four dominant terricolous arctic-alpine mat-forming lichens with different preferences for snow cover. The aim was to evaluate the effects of snow depth, and thus snow cover duration, on lichen growth and performance. The species, Alectoria ochroleuca , Flavocetraria nivalis , Cladonia mitis and Cetrariella delisei , are associated with increasing snow depth, respectively. They were transplanted for one year at five snow depths (0, 60, 120, 160 and 200 cm measured in early May) along each of four natural ridge to snow bed gradient transects in oceanic-alpine sites (western Norway). Snow slightly thicker than in source habitats caused negative RGR in the ridge top-dependent A. ochroleuca and the co-occurring F. nivalis with somewhat higher snow tolerance. Only C. mitis with the broadest ecological niche had positive RGR along most of the gradients (0–160 cm), even outside its natural range. The most snow-tolerant species, C. delisei , tolerant also to temporal inundation in water, had the lowest RGR. Nevertheless, it performed as well in places with little or no snow as in places where it grows naturally. Snow depth significantly affected total concentrations of CBSCs mainly in A. ochroleuca , which experienced substantial mass loss under snow. There was a highly significant increase in usnic acid concentration with increasing mass loss in A. ochroleuca , probably because usnic acid decays more slowly than other components. In conclusion, snow reduced lichen RGR, but in species-specific ways. Therefore, increasing snow depth per se along spatial and/or temporal scales likely reduces abundance and distribution of dominant mat-forming lichens in the alpine ecosystems of Scandinavia. Article in Journal/Newspaper Arctic Cambridge University Press Alectoria ENVELOPE(-58.640,-58.640,-63.977,-63.977) Arctic Norway The Lichenologist 48 3 237 247 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Relative growth rates (RGR) and carbon-based secondary compounds (CBSCs) were quantified in four dominant terricolous arctic-alpine mat-forming lichens with different preferences for snow cover. The aim was to evaluate the effects of snow depth, and thus snow cover duration, on lichen growth and performance. The species, Alectoria ochroleuca , Flavocetraria nivalis , Cladonia mitis and Cetrariella delisei , are associated with increasing snow depth, respectively. They were transplanted for one year at five snow depths (0, 60, 120, 160 and 200 cm measured in early May) along each of four natural ridge to snow bed gradient transects in oceanic-alpine sites (western Norway). Snow slightly thicker than in source habitats caused negative RGR in the ridge top-dependent A. ochroleuca and the co-occurring F. nivalis with somewhat higher snow tolerance. Only C. mitis with the broadest ecological niche had positive RGR along most of the gradients (0–160 cm), even outside its natural range. The most snow-tolerant species, C. delisei , tolerant also to temporal inundation in water, had the lowest RGR. Nevertheless, it performed as well in places with little or no snow as in places where it grows naturally. Snow depth significantly affected total concentrations of CBSCs mainly in A. ochroleuca , which experienced substantial mass loss under snow. There was a highly significant increase in usnic acid concentration with increasing mass loss in A. ochroleuca , probably because usnic acid decays more slowly than other components. In conclusion, snow reduced lichen RGR, but in species-specific ways. Therefore, increasing snow depth per se along spatial and/or temporal scales likely reduces abundance and distribution of dominant mat-forming lichens in the alpine ecosystems of Scandinavia. |
format |
Article in Journal/Newspaper |
author |
BIDUSSI, Massimo SOLHAUG, Knut Asbjørn GAUSLAA, Yngvar |
spellingShingle |
BIDUSSI, Massimo SOLHAUG, Knut Asbjørn GAUSLAA, Yngvar Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
author_facet |
BIDUSSI, Massimo SOLHAUG, Knut Asbjørn GAUSLAA, Yngvar |
author_sort |
BIDUSSI, Massimo |
title |
Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
title_short |
Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
title_full |
Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
title_fullStr |
Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
title_full_unstemmed |
Increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
title_sort |
increased snow accumulation reduces survival and growth in dominant mat-forming arctic-alpine lichens |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/s0024282916000086 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282916000086 |
long_lat |
ENVELOPE(-58.640,-58.640,-63.977,-63.977) |
geographic |
Alectoria Arctic Norway |
geographic_facet |
Alectoria Arctic Norway |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Lichenologist volume 48, issue 3, page 237-247 ISSN 0024-2829 1096-1135 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0024282916000086 |
container_title |
The Lichenologist |
container_volume |
48 |
container_issue |
3 |
container_start_page |
237 |
op_container_end_page |
247 |
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1809894069686501376 |