Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia
We examined tree mortality agents in pristine old Norway spruce (Picea abies (L.) Karst.) forests in northern Finland and northwestern Russia. The data was collected on nine 40 mâ â400 m transects. The primary mortality agents of recently dead trees were recorded and their frequencies were calculate...
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Finnish Society of Forest Science
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ftdoajarticles:oai:doaj.org/article:bb42364669944bf2bf29f750d0c1ea5d 2023-05-15T16:11:45+02:00 Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia Lännenpää, Antti Aakala, Tuomas Kauhanen, Heikki Kuuluvainen, Timo 2008-01-01T00:00:00Z https://doi.org/10.14214/sf.468 https://doaj.org/article/bb42364669944bf2bf29f750d0c1ea5d EN eng Finnish Society of Forest Science https://www.silvafennica.fi/article/468 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.468 https://doaj.org/article/bb42364669944bf2bf29f750d0c1ea5d Silva Fennica, Vol 42, Iss 2 (2008) Forestry SD1-669.5 article 2008 ftdoajarticles https://doi.org/10.14214/sf.468 2022-12-31T03:29:07Z We examined tree mortality agents in pristine old Norway spruce (Picea abies (L.) Karst.) forests in northern Finland and northwestern Russia. The data was collected on nine 40 mâ â400 m transects. The primary mortality agents of recently dead trees were recorded and their frequencies were calculated. The pattern of tree growth prior to death was studied based on increment core samples and compared with the growth of healthy dominant trees. Of all recently dead trees, 72% could be associated with a primary mortality agent. In both study areas the most common primary mortality agent was a Coniophora (Mérat) DC. -genus fungi, which was found on average in 33% of trees sampled. The fungi Phellinus chrysoloma (Fr.) Don and Onnia leporina (Fr.) H. Jahn as mortality agents were more common in the Finnish area compared to the Russian area. Analysis on the growth patterns indicated weak differences between different pathogensâ influence on prior-to-death growth of trees, so that fungi rotting the whole tree decreased tree growth more rapidly than fungi rotting only the heart wood. The results demonstrated that in old Norway spruce forests of northern Fennoscandia the most common primary tree mortality agents were wood rotting fungi, which weaken the mechanical stability of tree stems until they fall due to snow or wind, which should be considered only as secondary mortality agents. It is evident that tree death in pristine forest typically results from a long-lasting process involving both biotic and abiotic factors. Article in Journal/Newspaper Fennoscandia Northern Finland Directory of Open Access Journals: DOAJ Articles Norway Silva Fennica 42 2 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Forestry SD1-669.5 |
spellingShingle |
Forestry SD1-669.5 Lännenpää, Antti Aakala, Tuomas Kauhanen, Heikki Kuuluvainen, Timo Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
topic_facet |
Forestry SD1-669.5 |
description |
We examined tree mortality agents in pristine old Norway spruce (Picea abies (L.) Karst.) forests in northern Finland and northwestern Russia. The data was collected on nine 40 mâ â400 m transects. The primary mortality agents of recently dead trees were recorded and their frequencies were calculated. The pattern of tree growth prior to death was studied based on increment core samples and compared with the growth of healthy dominant trees. Of all recently dead trees, 72% could be associated with a primary mortality agent. In both study areas the most common primary mortality agent was a Coniophora (Mérat) DC. -genus fungi, which was found on average in 33% of trees sampled. The fungi Phellinus chrysoloma (Fr.) Don and Onnia leporina (Fr.) H. Jahn as mortality agents were more common in the Finnish area compared to the Russian area. Analysis on the growth patterns indicated weak differences between different pathogensâ influence on prior-to-death growth of trees, so that fungi rotting the whole tree decreased tree growth more rapidly than fungi rotting only the heart wood. The results demonstrated that in old Norway spruce forests of northern Fennoscandia the most common primary tree mortality agents were wood rotting fungi, which weaken the mechanical stability of tree stems until they fall due to snow or wind, which should be considered only as secondary mortality agents. It is evident that tree death in pristine forest typically results from a long-lasting process involving both biotic and abiotic factors. |
format |
Article in Journal/Newspaper |
author |
Lännenpää, Antti Aakala, Tuomas Kauhanen, Heikki Kuuluvainen, Timo |
author_facet |
Lännenpää, Antti Aakala, Tuomas Kauhanen, Heikki Kuuluvainen, Timo |
author_sort |
Lännenpää, Antti |
title |
Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
title_short |
Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
title_full |
Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
title_fullStr |
Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
title_full_unstemmed |
Tree mortality agents in pristine Norway spruce forests in northern Fennoscandia |
title_sort |
tree mortality agents in pristine norway spruce forests in northern fennoscandia |
publisher |
Finnish Society of Forest Science |
publishDate |
2008 |
url |
https://doi.org/10.14214/sf.468 https://doaj.org/article/bb42364669944bf2bf29f750d0c1ea5d |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia Northern Finland |
genre_facet |
Fennoscandia Northern Finland |
op_source |
Silva Fennica, Vol 42, Iss 2 (2008) |
op_relation |
https://www.silvafennica.fi/article/468 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.468 https://doaj.org/article/bb42364669944bf2bf29f750d0c1ea5d |
op_doi |
https://doi.org/10.14214/sf.468 |
container_title |
Silva Fennica |
container_volume |
42 |
container_issue |
2 |
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1765996922124894208 |