Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species
Summary In 1990–2003, during a complete 10‐year outbreak cycle, the synchrony of the birch defoliating outbreaks of the geometrids Epirrita autumnata and Operophtera brumata was studied quantitatively in the northern part of the Fennoscandian mountain chain (the Scandes). Data were supplemented with...
Published in: | Journal of Animal Ecology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2007
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-2656.2006.01204.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01204.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01204.x |
id |
crwiley:10.1111/j.1365-2656.2006.01204.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-2656.2006.01204.x 2024-06-23T07:52:43+00:00 Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species TENOW, O. NILSSEN, A. C. BYLUND, H. HOGSTAD, O. 2007 http://dx.doi.org/10.1111/j.1365-2656.2006.01204.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01204.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01204.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 76, issue 2, page 258-268 ISSN 0021-8790 1365-2656 journal-article 2007 crwiley https://doi.org/10.1111/j.1365-2656.2006.01204.x 2024-06-11T04:50:46Z Summary In 1990–2003, during a complete 10‐year outbreak cycle, the synchrony of the birch defoliating outbreaks of the geometrids Epirrita autumnata and Operophtera brumata was studied quantitatively in the northern part of the Fennoscandian mountain chain (the Scandes). Data were supplemented with similar data from 1964 to 1966 and historical information. A 30‐year series of field data from one locality in southern Scandes made possible interregional comparisons. In 1991, outbreaks started in north‐eastern Fennoscandia and moved westward like a wave and reached the outer coast of north‐western Norway in about 2000. This wave is a new observation. In the same years, a previously documented outbreak wave moved southward along the Scandes. Outbreak periods have usually occurred around the middle of each decade. Seemingly unrelated population peaks at the decadal shift 2000 were reported from islands at the coast of north‐western Norway. They are shown here to have been the final ripples of the east–west wave. At some localities, O. brumata peaked 2 years after E. autumnata . A lag of 1 or 2 years also occurred at the locality in southern Scandes. This interspecific time lag is a new observation. In accordance with the north–south wave, a time‐lag of 1–2 years occurred between the fluctuations of northern and southern E. autumnata and O. brumata populations. The population peak of E. autumnata occurred 1 year earlier at one locality than at a nearby locality. This pattern and particular altitudinal shifts of the O. brumata population density at these localities repeated in two outbreak periods. This indicates that, for example, local climate may modify outbreak synchrony between nearby localities. At the same localities, O. brumata peaked first at one altitude and 1 or 2 years later at another altitude. This vertical lag is a new observation. E. autumnata shows fluctuation traits similar to some other cyclic animals, e.g. the larch budmoth in the European Alps, some European tetraonid birds and the Canadian ... Article in Journal/Newspaper Fennoscandia Fennoscandian Wiley Online Library Norway Journal of Animal Ecology 76 2 258 268 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Summary In 1990–2003, during a complete 10‐year outbreak cycle, the synchrony of the birch defoliating outbreaks of the geometrids Epirrita autumnata and Operophtera brumata was studied quantitatively in the northern part of the Fennoscandian mountain chain (the Scandes). Data were supplemented with similar data from 1964 to 1966 and historical information. A 30‐year series of field data from one locality in southern Scandes made possible interregional comparisons. In 1991, outbreaks started in north‐eastern Fennoscandia and moved westward like a wave and reached the outer coast of north‐western Norway in about 2000. This wave is a new observation. In the same years, a previously documented outbreak wave moved southward along the Scandes. Outbreak periods have usually occurred around the middle of each decade. Seemingly unrelated population peaks at the decadal shift 2000 were reported from islands at the coast of north‐western Norway. They are shown here to have been the final ripples of the east–west wave. At some localities, O. brumata peaked 2 years after E. autumnata . A lag of 1 or 2 years also occurred at the locality in southern Scandes. This interspecific time lag is a new observation. In accordance with the north–south wave, a time‐lag of 1–2 years occurred between the fluctuations of northern and southern E. autumnata and O. brumata populations. The population peak of E. autumnata occurred 1 year earlier at one locality than at a nearby locality. This pattern and particular altitudinal shifts of the O. brumata population density at these localities repeated in two outbreak periods. This indicates that, for example, local climate may modify outbreak synchrony between nearby localities. At the same localities, O. brumata peaked first at one altitude and 1 or 2 years later at another altitude. This vertical lag is a new observation. E. autumnata shows fluctuation traits similar to some other cyclic animals, e.g. the larch budmoth in the European Alps, some European tetraonid birds and the Canadian ... |
format |
Article in Journal/Newspaper |
author |
TENOW, O. NILSSEN, A. C. BYLUND, H. HOGSTAD, O. |
spellingShingle |
TENOW, O. NILSSEN, A. C. BYLUND, H. HOGSTAD, O. Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
author_facet |
TENOW, O. NILSSEN, A. C. BYLUND, H. HOGSTAD, O. |
author_sort |
TENOW, O. |
title |
Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
title_short |
Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
title_full |
Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
title_fullStr |
Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
title_full_unstemmed |
Waves and synchrony in Epirrita autumnata /Operophtera brumataoutbreaks. I. Lagged synchrony: regionally, locally and among species |
title_sort |
waves and synchrony in epirrita autumnata /operophtera brumataoutbreaks. i. lagged synchrony: regionally, locally and among species |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1365-2656.2006.01204.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01204.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01204.x |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Journal of Animal Ecology volume 76, issue 2, page 258-268 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2656.2006.01204.x |
container_title |
Journal of Animal Ecology |
container_volume |
76 |
container_issue |
2 |
container_start_page |
258 |
op_container_end_page |
268 |
_version_ |
1802644099901161472 |