Lichens facilitate seedling recruitment in alpine heath
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 spe...
Published in: | Journal of Vegetation Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2650669 https://doi.org/10.1111/jvs.12773 |
id |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2650669 |
---|---|
record_format |
openpolar |
spelling |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2650669 2023-05-15T15:15:09+02:00 Lichens facilitate seedling recruitment in alpine heath Nystuen, Kristin Odden Sundsdal, Kristine Opedal, Øystein Hjorthol Holien, Håkon Strimbeck, Richard Graae, Bente Jessen 2019 application/pdf https://hdl.handle.net/11250/2650669 https://doi.org/10.1111/jvs.12773 eng eng Wiley Journal of Vegetation Science. 2019, 30 (5), 868-880. urn:issn:1100-9233 https://hdl.handle.net/11250/2650669 https://doi.org/10.1111/jvs.12773 cristin:1746432 868-880 30 Journal of Vegetation Science 5 Peer reviewed Journal article 2019 ftntnutrondheimi https://doi.org/10.1111/jvs.12773 2020-04-08T22:31:47Z 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 seem 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. acceptedVersion Locked until 28.5.2020 due to copyright restrictions. This is the peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/jvs.12773]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Article in Journal/Newspaper Arctic Dovrefjell NTNU Open Archive (Norwegian University of Science and Technology) Arctic Dovrefjell ENVELOPE(13.500,13.500,79.000,79.000) Norway Journal of Vegetation Science 30 5 868 880 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
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 seem 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. acceptedVersion Locked until 28.5.2020 due to copyright restrictions. This is the peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/jvs.12773]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
format |
Article in Journal/Newspaper |
author |
Nystuen, Kristin Odden Sundsdal, Kristine Opedal, Øystein Hjorthol Holien, Håkon Strimbeck, Richard Graae, Bente Jessen |
spellingShingle |
Nystuen, Kristin Odden Sundsdal, Kristine Opedal, Øystein Hjorthol Holien, Håkon Strimbeck, Richard Graae, Bente Jessen Lichens facilitate seedling recruitment in alpine heath |
author_facet |
Nystuen, Kristin Odden Sundsdal, Kristine Opedal, Øystein Hjorthol Holien, Håkon Strimbeck, Richard Graae, Bente Jessen |
author_sort |
Nystuen, Kristin Odden |
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 |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/11250/2650669 https://doi.org/10.1111/jvs.12773 |
long_lat |
ENVELOPE(13.500,13.500,79.000,79.000) |
geographic |
Arctic Dovrefjell Norway |
geographic_facet |
Arctic Dovrefjell Norway |
genre |
Arctic Dovrefjell |
genre_facet |
Arctic Dovrefjell |
op_source |
868-880 30 Journal of Vegetation Science 5 |
op_relation |
Journal of Vegetation Science. 2019, 30 (5), 868-880. urn:issn:1100-9233 https://hdl.handle.net/11250/2650669 https://doi.org/10.1111/jvs.12773 cristin:1746432 |
op_doi |
https://doi.org/10.1111/jvs.12773 |
container_title |
Journal of Vegetation Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
868 |
op_container_end_page |
880 |
_version_ |
1766345522961973248 |