Lichens facilitate seedling recruitment in alpine heath
Abstract Questions How do mat thickness, physical structure and allelopathic properties of terricolous mat-forming lichens affect recruitment of vascular plants in dwarf-shrub and lichen heath vegetation?. Location The mountains of Dovrefjell, central Norway. Methods In autumn, seeds of ten vascular...
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Language: | English |
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John Wiley & Sons, Ltd (10.1111)
2020
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Online Access: | http://hdl.handle.net/10138/315292 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/315292 2024-01-07T09:42:02+01:00 Lichens facilitate seedling recruitment in alpine heath Nystuen, Kristin O. Sundsdal, Kristine Opedal, Øystein H. Holien, Håkon Strimbeck, G. Richard Graae, Bente J. Research Centre for Ecological Change Faculty of Biological and Environmental Sciences Plant Adaptation and Conservation 2020-05-28T02:12:23Z 13 application/pdf http://hdl.handle.net/10138/315292 eng eng John Wiley & Sons, Ltd (10.1111) 10.1111/jvs.12773 Nystuen , K O , Sundsdal , K , Opedal , Ø H , Holien , H , Strimbeck , G R & Graae , B J 2019 , ' Lichens facilitate seedling recruitment in alpine heath ' , Journal of Vegetation Science , vol. 30 , no. 5 , pp. 868-880 . https://doi.org/10.1111/jvs.12773 RIS: urn:091998B39BE3F7A422A0858471E339BA 2561ef31-89f5-4b85-a246-8e8b3d4009d8 http://hdl.handle.net/10138/315292 000479449600001 unspecified openAccess info:eu-repo/semantics/openAccess Alectoria CLADONIA CLIMATE-CHANGE Cetraria Cladonia heath DOMINATED SYSTEMS EMERGENCE Flavocetraria GROWTH POSITIVE INTERACTIONS REINDEER SCOTS PINE Stereocaulon VEGETATION CHANGES WATER RELATIONS ground lichen lichen secondary metabolites lichen-plant interaction microclimate seedling emergence soil moisture tundra vascular plant colonization 1172 Environmental sciences 1181 Ecology evolutionary biology Article acceptedVersion 2020 ftunivhelsihelda 2023-12-14T00:08:53Z Abstract Questions How do mat thickness, physical structure and allelopathic properties of terricolous mat-forming lichens affect recruitment of vascular plants in dwarf-shrub and lichen heath vegetation?. Location The mountains of Dovrefjell, central Norway. Methods In autumn, seeds of ten vascular plant species were collected and sown in a common garden experiment with mats of six lichen species and bare-soil controls as experimental treatments. We recorded growing season soil temperature and moisture, and seedling recruitment and growth after one year. The effect of lichen secondary compounds on germination was tested in a growth chamber experiment and compared to the lichen-plant interactions detected under field conditions. Results The lichen mats buffered extreme soil temperatures and soil drying in dry weather, with soils below the thickest mats (Cladonia stellaris and C. rangiferina) experiencing the lowest temperature fluctuations. Seedling recruitment and seedling growth in the field and seed germination in the lab were species-specific. Seedling recruitment rates were overall higher within lichen mats than on bare soil, but the c. 6.5 cm thick mats of C. stellaris reduced recruitment of many species. The lab experiment suggested no overall strong effect of lichen allelopathy on seed germination, and effects on seed germination were only moderately correlated with the lichen-plant interactions observed for seedling recruitment in the field. Conclusions In harsh environments like alpine dwarf-shrub and lichen heaths, the presence of lichens and the resulting amelioration of the microclimate seems more important for vascular plant recruitment than are allelopathic effects often reported in lab experiments. We might therefore expect most terricolous lichens, depending on the plant species in focus, to facilitate rather than hamper the early stages of plant recruitment into lichen-dominated arctic-alpine heath vegetation. This article is protected by copyright. All rights reserved. Peer reviewed Article in Journal/Newspaper Arctic Climate change Dovrefjell Tundra HELDA – University of Helsinki Open Repository Alectoria ENVELOPE(-58.640,-58.640,-63.977,-63.977) Arctic Dovrefjell ENVELOPE(13.500,13.500,79.000,79.000) Norway Journal of Vegetation Science 30 5 868 880 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Alectoria CLADONIA CLIMATE-CHANGE Cetraria Cladonia heath DOMINATED SYSTEMS EMERGENCE Flavocetraria GROWTH POSITIVE INTERACTIONS REINDEER SCOTS PINE Stereocaulon VEGETATION CHANGES WATER RELATIONS ground lichen lichen secondary metabolites lichen-plant interaction microclimate seedling emergence soil moisture tundra vascular plant colonization 1172 Environmental sciences 1181 Ecology evolutionary biology |
spellingShingle |
Alectoria CLADONIA CLIMATE-CHANGE Cetraria Cladonia heath DOMINATED SYSTEMS EMERGENCE Flavocetraria GROWTH POSITIVE INTERACTIONS REINDEER SCOTS PINE Stereocaulon VEGETATION CHANGES WATER RELATIONS ground lichen lichen secondary metabolites lichen-plant interaction microclimate seedling emergence soil moisture tundra vascular plant colonization 1172 Environmental sciences 1181 Ecology evolutionary biology Nystuen, Kristin O. Sundsdal, Kristine Opedal, Øystein H. Holien, Håkon Strimbeck, G. Richard Graae, Bente J. Lichens facilitate seedling recruitment in alpine heath |
topic_facet |
Alectoria CLADONIA CLIMATE-CHANGE Cetraria Cladonia heath DOMINATED SYSTEMS EMERGENCE Flavocetraria GROWTH POSITIVE INTERACTIONS REINDEER SCOTS PINE Stereocaulon VEGETATION CHANGES WATER RELATIONS ground lichen lichen secondary metabolites lichen-plant interaction microclimate seedling emergence soil moisture tundra vascular plant colonization 1172 Environmental sciences 1181 Ecology evolutionary biology |
description |
Abstract Questions How do mat thickness, physical structure and allelopathic properties of terricolous mat-forming lichens affect recruitment of vascular plants in dwarf-shrub and lichen heath vegetation?. Location The mountains of Dovrefjell, central Norway. Methods In autumn, seeds of ten vascular plant species were collected and sown in a common garden experiment with mats of six lichen species and bare-soil controls as experimental treatments. We recorded growing season soil temperature and moisture, and seedling recruitment and growth after one year. The effect of lichen secondary compounds on germination was tested in a growth chamber experiment and compared to the lichen-plant interactions detected under field conditions. Results The lichen mats buffered extreme soil temperatures and soil drying in dry weather, with soils below the thickest mats (Cladonia stellaris and C. rangiferina) experiencing the lowest temperature fluctuations. Seedling recruitment and seedling growth in the field and seed germination in the lab were species-specific. Seedling recruitment rates were overall higher within lichen mats than on bare soil, but the c. 6.5 cm thick mats of C. stellaris reduced recruitment of many species. The lab experiment suggested no overall strong effect of lichen allelopathy on seed germination, and effects on seed germination were only moderately correlated with the lichen-plant interactions observed for seedling recruitment in the field. Conclusions In harsh environments like alpine dwarf-shrub and lichen heaths, the presence of lichens and the resulting amelioration of the microclimate seems more important for vascular plant recruitment than are allelopathic effects often reported in lab experiments. We might therefore expect most terricolous lichens, depending on the plant species in focus, to facilitate rather than hamper the early stages of plant recruitment into lichen-dominated arctic-alpine heath vegetation. This article is protected by copyright. All rights reserved. Peer reviewed |
author2 |
Research Centre for Ecological Change Faculty of Biological and Environmental Sciences Plant Adaptation and Conservation |
format |
Article in Journal/Newspaper |
author |
Nystuen, Kristin O. Sundsdal, Kristine Opedal, Øystein H. Holien, Håkon Strimbeck, G. Richard Graae, Bente J. |
author_facet |
Nystuen, Kristin O. Sundsdal, Kristine Opedal, Øystein H. Holien, Håkon Strimbeck, G. Richard Graae, Bente J. |
author_sort |
Nystuen, Kristin O. |
title |
Lichens facilitate seedling recruitment in alpine heath |
title_short |
Lichens facilitate seedling recruitment in alpine heath |
title_full |
Lichens facilitate seedling recruitment in alpine heath |
title_fullStr |
Lichens facilitate seedling recruitment in alpine heath |
title_full_unstemmed |
Lichens facilitate seedling recruitment in alpine heath |
title_sort |
lichens facilitate seedling recruitment in alpine heath |
publisher |
John Wiley & Sons, Ltd (10.1111) |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/315292 |
long_lat |
ENVELOPE(-58.640,-58.640,-63.977,-63.977) ENVELOPE(13.500,13.500,79.000,79.000) |
geographic |
Alectoria Arctic Dovrefjell Norway |
geographic_facet |
Alectoria Arctic Dovrefjell Norway |
genre |
Arctic Climate change Dovrefjell Tundra |
genre_facet |
Arctic Climate change Dovrefjell Tundra |
op_relation |
10.1111/jvs.12773 Nystuen , K O , Sundsdal , K , Opedal , Ø H , Holien , H , Strimbeck , G R & Graae , B J 2019 , ' Lichens facilitate seedling recruitment in alpine heath ' , Journal of Vegetation Science , vol. 30 , no. 5 , pp. 868-880 . https://doi.org/10.1111/jvs.12773 RIS: urn:091998B39BE3F7A422A0858471E339BA 2561ef31-89f5-4b85-a246-8e8b3d4009d8 http://hdl.handle.net/10138/315292 000479449600001 |
op_rights |
unspecified openAccess info:eu-repo/semantics/openAccess |
container_title |
Journal of Vegetation Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
868 |
op_container_end_page |
880 |
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1787422872892866560 |