Lichen communities on Populus tremula are affected by the density of Picea abies
Questions Aspen (Populus tremula) is declining in the old‐growth forests of boreal Fennoscandia. This threatens the numerous taxa that are dependent on old aspens, including many epiphytic lichens. Potential methods to aid epiphytic lichens on aspen are centered around treatments which affect the de...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/75708 2024-05-19T07:40:10+00:00 Lichen communities on Populus tremula are affected by the density of Picea abies Nirhamo, Aleksi Pykälä, Juha Halme, Panu Komonen, Atte 2021 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-202105182978 eng eng Wiley Applied Vegetation Science 1402-2001 2 24 10.1111/avsc.12584 Nirhamo, A., Pykälä, J., Halme, P., & Komonen, A. (2021). Lichen communities on Populus tremula are affected by the density of Picea abies. Applied Vegetation Science , 24 (2), Article e12584. https://doi.org/10.1111/avsc.12584 CONVID_73084657 URN:NBN:fi:jyu-202105182978 http://urn.fi/URN:NBN:fi:jyu-202105182978 CC BY 4.0 © 2021 International Association for Vegetation Science openAccess https://creativecommons.org/licenses/by/4.0/ boreal forests community ecology cyanolichens epiphytic lichens European aspen red‐listed species succession boreaalinen vyöhyke metsäkuusi biodiversiteetti suojelualueet jäkälät haapa vanhat metsät article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2021 ftjyvaeskylaenun 2024-04-23T23:38:28Z Questions Aspen (Populus tremula) is declining in the old‐growth forests of boreal Fennoscandia. This threatens the numerous taxa that are dependent on old aspens, including many epiphytic lichens. Potential methods to aid epiphytic lichens on aspen are centered around treatments which affect the density of Norway spruce (Picea abies). In this study, we investigated how epiphytic lichen communities on aspen are affected by the variation of spruce density in the immediate vicinity of the focal aspen. Location Southern boreal forests in Finland. Methods We recorded the occurrence of lichens from 120 aspens in 12 semi‐natural forest sites. We used spruce basal area as the measure for spruce density. The selected aspens represented a gradient in spruce basal area in the vicinity of the aspen from 0 to 36 m2/ha. We also measured other tree‐ and stand‐level variables that are known to influence lichen occurrence. Results Lichen communities on aspen were affected by spruce density, stand age and bark pH. Both lichen species richness and the richness of red‐listed species were highest at an intermediate spruce density, and both increased with stand age. Lichen species richness was higher when bark pH was lower. Additionally, community composition was influenced the most by spruce density, followed by bark pH. Conclusions Our study highlights the detrimental effects of high spruce density on lichen diversity on aspens. This is caused by high spruce density resulting in low light availability. Lichen diversity on aspens was highest when spruce density was intermediate. Spruce thinning in aspen‐rich old‐growth forests can be helpful in ensuring the long‐term persistence of old‐growth lichens on aspen in protected forests. peerReviewed Article in Journal/Newspaper Fennoscandia JYX - Jyväskylä University Digital Archive |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
boreal forests community ecology cyanolichens epiphytic lichens European aspen red‐listed species succession boreaalinen vyöhyke metsäkuusi biodiversiteetti suojelualueet jäkälät haapa vanhat metsät |
spellingShingle |
boreal forests community ecology cyanolichens epiphytic lichens European aspen red‐listed species succession boreaalinen vyöhyke metsäkuusi biodiversiteetti suojelualueet jäkälät haapa vanhat metsät Nirhamo, Aleksi Pykälä, Juha Halme, Panu Komonen, Atte Lichen communities on Populus tremula are affected by the density of Picea abies |
topic_facet |
boreal forests community ecology cyanolichens epiphytic lichens European aspen red‐listed species succession boreaalinen vyöhyke metsäkuusi biodiversiteetti suojelualueet jäkälät haapa vanhat metsät |
description |
Questions Aspen (Populus tremula) is declining in the old‐growth forests of boreal Fennoscandia. This threatens the numerous taxa that are dependent on old aspens, including many epiphytic lichens. Potential methods to aid epiphytic lichens on aspen are centered around treatments which affect the density of Norway spruce (Picea abies). In this study, we investigated how epiphytic lichen communities on aspen are affected by the variation of spruce density in the immediate vicinity of the focal aspen. Location Southern boreal forests in Finland. Methods We recorded the occurrence of lichens from 120 aspens in 12 semi‐natural forest sites. We used spruce basal area as the measure for spruce density. The selected aspens represented a gradient in spruce basal area in the vicinity of the aspen from 0 to 36 m2/ha. We also measured other tree‐ and stand‐level variables that are known to influence lichen occurrence. Results Lichen communities on aspen were affected by spruce density, stand age and bark pH. Both lichen species richness and the richness of red‐listed species were highest at an intermediate spruce density, and both increased with stand age. Lichen species richness was higher when bark pH was lower. Additionally, community composition was influenced the most by spruce density, followed by bark pH. Conclusions Our study highlights the detrimental effects of high spruce density on lichen diversity on aspens. This is caused by high spruce density resulting in low light availability. Lichen diversity on aspens was highest when spruce density was intermediate. Spruce thinning in aspen‐rich old‐growth forests can be helpful in ensuring the long‐term persistence of old‐growth lichens on aspen in protected forests. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Nirhamo, Aleksi Pykälä, Juha Halme, Panu Komonen, Atte |
author_facet |
Nirhamo, Aleksi Pykälä, Juha Halme, Panu Komonen, Atte |
author_sort |
Nirhamo, Aleksi |
title |
Lichen communities on Populus tremula are affected by the density of Picea abies |
title_short |
Lichen communities on Populus tremula are affected by the density of Picea abies |
title_full |
Lichen communities on Populus tremula are affected by the density of Picea abies |
title_fullStr |
Lichen communities on Populus tremula are affected by the density of Picea abies |
title_full_unstemmed |
Lichen communities on Populus tremula are affected by the density of Picea abies |
title_sort |
lichen communities on populus tremula are affected by the density of picea abies |
publisher |
Wiley |
publishDate |
2021 |
url |
http://urn.fi/URN:NBN:fi:jyu-202105182978 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
Applied Vegetation Science 1402-2001 2 24 10.1111/avsc.12584 Nirhamo, A., Pykälä, J., Halme, P., & Komonen, A. (2021). Lichen communities on Populus tremula are affected by the density of Picea abies. Applied Vegetation Science , 24 (2), Article e12584. https://doi.org/10.1111/avsc.12584 CONVID_73084657 URN:NBN:fi:jyu-202105182978 http://urn.fi/URN:NBN:fi:jyu-202105182978 |
op_rights |
CC BY 4.0 © 2021 International Association for Vegetation Science openAccess https://creativecommons.org/licenses/by/4.0/ |
_version_ |
1799479736695521280 |