Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata
Abstract. Mountain birch ( Betula pubescens ssp. czerepanovii ) forest in the Abisko valley of northern Sweden was completely defoliated by Epirrita autumnata caterpillars during an outbreak in 1954–1955. The defoliation resulted in an 80–90% mortality of the leaf‐carrying shoots of birches in 1956...
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Online Access: | http://dx.doi.org/10.2307/3236555 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F3236555 https://onlinelibrary.wiley.com/doi/pdf/10.2307/3236555 |
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crwiley:10.2307/3236555 2024-06-23T07:44:52+00:00 Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata Tenow, Olle Bylund, Helena 2000 http://dx.doi.org/10.2307/3236555 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F3236555 https://onlinelibrary.wiley.com/doi/pdf/10.2307/3236555 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Vegetation Science volume 11, issue 6, page 855-862 ISSN 1100-9233 1654-1103 journal-article 2000 crwiley https://doi.org/10.2307/3236555 2024-06-11T04:45:12Z Abstract. Mountain birch ( Betula pubescens ssp. czerepanovii ) forest in the Abisko valley of northern Sweden was completely defoliated by Epirrita autumnata caterpillars during an outbreak in 1954–1955. The defoliation resulted in an 80–90% mortality of the leaf‐carrying shoots of birches in 1956 and triggered a rejuvenation of stands. The subsequent regrowth of foliage was studied in two damaged birch stands and in one unattacked stand. The number of leaves approximately doubled in the damaged stands between 1961 and 1987, while the number on the reference plot fluctuated without significant increase. Regrowth started with increased production of long shoots from surviving shoots and basal sprouts. Basal sprouts were a substantial source of new shoots in the recovery of the foliage, especially on the most damaged plot. Trees of seed origin constituted a minor fraction of the regrowth. Initial rapid growth of foliage reduced gradually and the annual leaf production in 1986/1987 was 75% of that of the reference plot. Comparison between the recovery curve and data from the reference plot indicates that the shoot population of the damaged forest will, after more than 30 years, need many more years to reach the assumed size of a mature forest. The degree of rejuvenation varied between stands, with different consequences for future dynamics of E. autumnata populations. Article in Journal/Newspaper Abisko Northern Sweden Wiley Online Library Abisko ENVELOPE(18.829,18.829,68.349,68.349) Journal of Vegetation Science 11 6 855 862 |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract. Mountain birch ( Betula pubescens ssp. czerepanovii ) forest in the Abisko valley of northern Sweden was completely defoliated by Epirrita autumnata caterpillars during an outbreak in 1954–1955. The defoliation resulted in an 80–90% mortality of the leaf‐carrying shoots of birches in 1956 and triggered a rejuvenation of stands. The subsequent regrowth of foliage was studied in two damaged birch stands and in one unattacked stand. The number of leaves approximately doubled in the damaged stands between 1961 and 1987, while the number on the reference plot fluctuated without significant increase. Regrowth started with increased production of long shoots from surviving shoots and basal sprouts. Basal sprouts were a substantial source of new shoots in the recovery of the foliage, especially on the most damaged plot. Trees of seed origin constituted a minor fraction of the regrowth. Initial rapid growth of foliage reduced gradually and the annual leaf production in 1986/1987 was 75% of that of the reference plot. Comparison between the recovery curve and data from the reference plot indicates that the shoot population of the damaged forest will, after more than 30 years, need many more years to reach the assumed size of a mature forest. The degree of rejuvenation varied between stands, with different consequences for future dynamics of E. autumnata populations. |
format |
Article in Journal/Newspaper |
author |
Tenow, Olle Bylund, Helena |
spellingShingle |
Tenow, Olle Bylund, Helena Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
author_facet |
Tenow, Olle Bylund, Helena |
author_sort |
Tenow, Olle |
title |
Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
title_short |
Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
title_full |
Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
title_fullStr |
Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
title_full_unstemmed |
Recovery of a Betula pubescens forest in northern Sweden after severe defoliation by Epirrita autumnata |
title_sort |
recovery of a betula pubescens forest in northern sweden after severe defoliation by epirrita autumnata |
publisher |
Wiley |
publishDate |
2000 |
url |
http://dx.doi.org/10.2307/3236555 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F3236555 https://onlinelibrary.wiley.com/doi/pdf/10.2307/3236555 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) |
geographic |
Abisko |
geographic_facet |
Abisko |
genre |
Abisko Northern Sweden |
genre_facet |
Abisko Northern Sweden |
op_source |
Journal of Vegetation Science volume 11, issue 6, page 855-862 ISSN 1100-9233 1654-1103 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2307/3236555 |
container_title |
Journal of Vegetation Science |
container_volume |
11 |
container_issue |
6 |
container_start_page |
855 |
op_container_end_page |
862 |
_version_ |
1802645945580519424 |