Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence.
In the long-term absence of major disturbances ecosystems enter a state of retrogression, which involves declining soil fertility and consequently a reduction in decomposition rates. Recent studies have looked at how plant traits such as specific leaf mass and amounts of secondary compounds respond...
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ftdoajarticles:oai:doaj.org/article:ec8b255f0e5a4a4e8bcbd486d9bcd8be 2023-05-15T17:44:54+02:00 Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. Johan Asplund Aron Sandling David A Wardle 2012-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0049081 https://doaj.org/article/ec8b255f0e5a4a4e8bcbd486d9bcd8be EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3493489?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0049081 https://doaj.org/article/ec8b255f0e5a4a4e8bcbd486d9bcd8be PLoS ONE, Vol 7, Iss 11, p e49081 (2012) Medicine R Science Q article 2012 ftdoajarticles https://doi.org/10.1371/journal.pone.0049081 2022-12-31T10:55:59Z In the long-term absence of major disturbances ecosystems enter a state of retrogression, which involves declining soil fertility and consequently a reduction in decomposition rates. Recent studies have looked at how plant traits such as specific leaf mass and amounts of secondary compounds respond to declining soil fertility during retrogression, but there are no comparable studies for lichen traits despite increasing recognition of the role that lichens can play in ecosystem processes. We studied a group of 30 forested islands in northern Sweden differing greatly in fire history, and collectively representing a retrogressive chronosequence, spanning 5000 years. We used this system to explore how specific thallus mass (STM) and carbon based secondary compounds (CBSCs) change in three common epiphytic lichen species (Hypogymnia phsyodes, Melanohalea olivacea and Parmelia sulcata) as soil fertility declines during this retrogression. We found that STMs of lichens increased sharply during retrogression, and for all species soil N to P ratio (which increased during retrogression) was a strong predictor of STM. When expressed per unit area, medullary CBSCs in all species and cortical CBSCs in P. sulcata increased during retrogression. Meanwhile, when expressed per unit mass, only cortical CBSCs in H. physodes responded to retrogression, and in the opposite direction. Given that lichen functional traits are likely to be important in driving ecological processes that drive nutrient and carbon cycling in the way that plant functional traits are, the changes that they undergo during retrogression could potentially be significant for the functioning of the ecosystem. Article in Journal/Newspaper Northern Sweden Directory of Open Access Journals: DOAJ Articles PLoS ONE 7 11 e49081 |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Johan Asplund Aron Sandling David A Wardle Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
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Medicine R Science Q |
description |
In the long-term absence of major disturbances ecosystems enter a state of retrogression, which involves declining soil fertility and consequently a reduction in decomposition rates. Recent studies have looked at how plant traits such as specific leaf mass and amounts of secondary compounds respond to declining soil fertility during retrogression, but there are no comparable studies for lichen traits despite increasing recognition of the role that lichens can play in ecosystem processes. We studied a group of 30 forested islands in northern Sweden differing greatly in fire history, and collectively representing a retrogressive chronosequence, spanning 5000 years. We used this system to explore how specific thallus mass (STM) and carbon based secondary compounds (CBSCs) change in three common epiphytic lichen species (Hypogymnia phsyodes, Melanohalea olivacea and Parmelia sulcata) as soil fertility declines during this retrogression. We found that STMs of lichens increased sharply during retrogression, and for all species soil N to P ratio (which increased during retrogression) was a strong predictor of STM. When expressed per unit area, medullary CBSCs in all species and cortical CBSCs in P. sulcata increased during retrogression. Meanwhile, when expressed per unit mass, only cortical CBSCs in H. physodes responded to retrogression, and in the opposite direction. Given that lichen functional traits are likely to be important in driving ecological processes that drive nutrient and carbon cycling in the way that plant functional traits are, the changes that they undergo during retrogression could potentially be significant for the functioning of the ecosystem. |
format |
Article in Journal/Newspaper |
author |
Johan Asplund Aron Sandling David A Wardle |
author_facet |
Johan Asplund Aron Sandling David A Wardle |
author_sort |
Johan Asplund |
title |
Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
title_short |
Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
title_full |
Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
title_fullStr |
Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
title_full_unstemmed |
Lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
title_sort |
lichen specific thallus mass and secondary compounds change across a retrogressive fire-driven chronosequence. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2012 |
url |
https://doi.org/10.1371/journal.pone.0049081 https://doaj.org/article/ec8b255f0e5a4a4e8bcbd486d9bcd8be |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
PLoS ONE, Vol 7, Iss 11, p e49081 (2012) |
op_relation |
http://europepmc.org/articles/PMC3493489?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0049081 https://doaj.org/article/ec8b255f0e5a4a4e8bcbd486d9bcd8be |
op_doi |
https://doi.org/10.1371/journal.pone.0049081 |
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PLoS ONE |
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7 |
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11 |
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e49081 |
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