Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe
We compared microsite occupancy and three spatial structure of regeneration in three primeval late-successional Norway spruce dominated forests. One area lay in the middle boreal zone in Russia (Dvina-Pinega) where larger-scale disturbance from bark beetles and drought had occurred; the other areas...
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ftdoajarticles:oai:doaj.org/article:098e79038ea94aeba966e1ce1fa6714e 2023-05-15T16:02:53+02:00 Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe Grenfell, Russell Aakala, Tuomas Kuuluvainen, Timo 2011-01-01T00:00:00Z https://doi.org/10.14214/sf.89 https://doaj.org/article/098e79038ea94aeba966e1ce1fa6714e EN eng Finnish Society of Forest Science https://www.silvafennica.fi/article/89 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.89 https://doaj.org/article/098e79038ea94aeba966e1ce1fa6714e Silva Fennica, Vol 45, Iss 5 (2011) Forestry SD1-669.5 article 2011 ftdoajarticles https://doi.org/10.14214/sf.89 2022-12-31T08:52:20Z We compared microsite occupancy and three spatial structure of regeneration in three primeval late-successional Norway spruce dominated forests. One area lay in the middle boreal zone in Russia (Dvina-Pinega) where larger-scale disturbance from bark beetles and drought had occurred; the other areas lay in the northern boreal zone, one in Finland (Pallas-Ylläs) had encountered only small-scale disturbance, and one in Russia (Kazkim) had been influenced by fire. We mapped all spruce (Picea abies) and birch (Betula pendula and Betula pubescens) trees with diameter at breast height (DBH) ⥠10 cm on 40 m 400 m plots, and those with DBH < 10 cm on 2 m or 4 m 400 m subplots. On the subplots we also recorded microsite occupancy and estimated microsite availability. At all study areas small seedlings (h < 0.3 m) of both spruce and birch were found largely on disturbance-related microsites. Birch saplings (h ⥠1.3 m, DBH < 10 cm) disproportionately occupied deadwood-related microsites at Dvina-Pinega. In contrast, spruce saplings at all study areas, and birch saplings at Kazkim and Pallas-Ylläs, showed less, or no, preference. Our results thus confirm the importance of disturbance-related microsites for regeneration establishment, but not necessarily for long-term survival. No spatial segregation between the overstorey (DBH ⥠10 cm) and saplings (h ⥠1.3 m, DBH < 10 cm) or seedlings (h < 1.3 m) was found at Pallas-Ylläs or Kazkim, and only three instances of very weak segregation were found at Dvina-Pinega. This suggests that the regeneration gap concept may not be useful for describing the regeneration dynamics of primeval boreal forests. Article in Journal/Newspaper dvina Directory of Open Access Journals: DOAJ Articles Deadwood ENVELOPE(-117.453,-117.453,56.733,56.733) Norway Pinega ENVELOPE(41.909,41.909,64.134,64.134) Silva Fennica 45 5 |
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 Grenfell, Russell Aakala, Tuomas Kuuluvainen, Timo Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
topic_facet |
Forestry SD1-669.5 |
description |
We compared microsite occupancy and three spatial structure of regeneration in three primeval late-successional Norway spruce dominated forests. One area lay in the middle boreal zone in Russia (Dvina-Pinega) where larger-scale disturbance from bark beetles and drought had occurred; the other areas lay in the northern boreal zone, one in Finland (Pallas-Ylläs) had encountered only small-scale disturbance, and one in Russia (Kazkim) had been influenced by fire. We mapped all spruce (Picea abies) and birch (Betula pendula and Betula pubescens) trees with diameter at breast height (DBH) ⥠10 cm on 40 m 400 m plots, and those with DBH < 10 cm on 2 m or 4 m 400 m subplots. On the subplots we also recorded microsite occupancy and estimated microsite availability. At all study areas small seedlings (h < 0.3 m) of both spruce and birch were found largely on disturbance-related microsites. Birch saplings (h ⥠1.3 m, DBH < 10 cm) disproportionately occupied deadwood-related microsites at Dvina-Pinega. In contrast, spruce saplings at all study areas, and birch saplings at Kazkim and Pallas-Ylläs, showed less, or no, preference. Our results thus confirm the importance of disturbance-related microsites for regeneration establishment, but not necessarily for long-term survival. No spatial segregation between the overstorey (DBH ⥠10 cm) and saplings (h ⥠1.3 m, DBH < 10 cm) or seedlings (h < 1.3 m) was found at Pallas-Ylläs or Kazkim, and only three instances of very weak segregation were found at Dvina-Pinega. This suggests that the regeneration gap concept may not be useful for describing the regeneration dynamics of primeval boreal forests. |
format |
Article in Journal/Newspaper |
author |
Grenfell, Russell Aakala, Tuomas Kuuluvainen, Timo |
author_facet |
Grenfell, Russell Aakala, Tuomas Kuuluvainen, Timo |
author_sort |
Grenfell, Russell |
title |
Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
title_short |
Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
title_full |
Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
title_fullStr |
Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
title_full_unstemmed |
Microsite occupancy and the spatial structure of understorey regeneration in three late-successional Norway spruce forests in northern Europe |
title_sort |
microsite occupancy and the spatial structure of understorey regeneration in three late-successional norway spruce forests in northern europe |
publisher |
Finnish Society of Forest Science |
publishDate |
2011 |
url |
https://doi.org/10.14214/sf.89 https://doaj.org/article/098e79038ea94aeba966e1ce1fa6714e |
long_lat |
ENVELOPE(-117.453,-117.453,56.733,56.733) ENVELOPE(41.909,41.909,64.134,64.134) |
geographic |
Deadwood Norway Pinega |
geographic_facet |
Deadwood Norway Pinega |
genre |
dvina |
genre_facet |
dvina |
op_source |
Silva Fennica, Vol 45, Iss 5 (2011) |
op_relation |
https://www.silvafennica.fi/article/89 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.89 https://doaj.org/article/098e79038ea94aeba966e1ce1fa6714e |
op_doi |
https://doi.org/10.14214/sf.89 |
container_title |
Silva Fennica |
container_volume |
45 |
container_issue |
5 |
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1766398559219875840 |