Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology
Climatically driven Moran effects have often been invoked as the most likely cause of regionally synchronized outbreaks of insect herbivores without identifying the exact mechanism. However, the degree of match between host plant and larval phenology is crucial for the growth and survival of many sp...
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crroyalsociety:10.1098/rspb.2009.1148 2024-06-02T08:06:30+00:00 Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology Jepsen, Jane U. Hagen, Snorre B. Karlsen, Stein-Rune Ims, Rolf A. 2009 http://dx.doi.org/10.1098/rspb.2009.1148 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.1148 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.1148 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 276, issue 1676, page 4119-4128 ISSN 0962-8452 1471-2954 journal-article 2009 crroyalsociety https://doi.org/10.1098/rspb.2009.1148 2024-05-07T14:16:21Z Climatically driven Moran effects have often been invoked as the most likely cause of regionally synchronized outbreaks of insect herbivores without identifying the exact mechanism. However, the degree of match between host plant and larval phenology is crucial for the growth and survival of many spring-feeding pest insects, suggesting that a phenological match/mismatch-driven Moran effect may act as a synchronizing agent. We analyse the phase-dependent spatial dynamics of defoliation caused by cyclically outbreaking geometrid moths in northern boreal birch forest in Fennoscandia through the most recent massive outbreak (2000–2008). We use satellite-derived time series of the prevalence of moth defoliation and the onset of the growing season for the entire region to investigate the link between the patterns of defoliation and outbreak spread. In addition, we examine whether a phase-dependent coherence in the pattern of spatial synchrony exists between defoliation and onset of the growing season, in order to evaluate if the degree of matching phenology between the moth and their host plant could be the mechanism behind a Moran effect. The strength of regional spatial synchrony in defoliation and the pattern of defoliation spread were both highly phase-dependent. The incipient phase of the outbreak was characterized by high regional synchrony in defoliation and long spread distances, compared with the epidemic and crash phase. Defoliation spread was best described using a two-scale stratified spread model, suggesting that defoliation spread is governed by two processes operating at different spatial scale. The pattern of phase-dependent spatial synchrony was coherent in both defoliation and onset of the growing season. This suggests that the timing of spring phenology plays a role in the large-scale synchronization of birch forest moth outbreaks. Article in Journal/Newspaper Fennoscandia The Royal Society Proceedings of the Royal Society B: Biological Sciences 276 1676 4119 4128 |
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English |
description |
Climatically driven Moran effects have often been invoked as the most likely cause of regionally synchronized outbreaks of insect herbivores without identifying the exact mechanism. However, the degree of match between host plant and larval phenology is crucial for the growth and survival of many spring-feeding pest insects, suggesting that a phenological match/mismatch-driven Moran effect may act as a synchronizing agent. We analyse the phase-dependent spatial dynamics of defoliation caused by cyclically outbreaking geometrid moths in northern boreal birch forest in Fennoscandia through the most recent massive outbreak (2000–2008). We use satellite-derived time series of the prevalence of moth defoliation and the onset of the growing season for the entire region to investigate the link between the patterns of defoliation and outbreak spread. In addition, we examine whether a phase-dependent coherence in the pattern of spatial synchrony exists between defoliation and onset of the growing season, in order to evaluate if the degree of matching phenology between the moth and their host plant could be the mechanism behind a Moran effect. The strength of regional spatial synchrony in defoliation and the pattern of defoliation spread were both highly phase-dependent. The incipient phase of the outbreak was characterized by high regional synchrony in defoliation and long spread distances, compared with the epidemic and crash phase. Defoliation spread was best described using a two-scale stratified spread model, suggesting that defoliation spread is governed by two processes operating at different spatial scale. The pattern of phase-dependent spatial synchrony was coherent in both defoliation and onset of the growing season. This suggests that the timing of spring phenology plays a role in the large-scale synchronization of birch forest moth outbreaks. |
format |
Article in Journal/Newspaper |
author |
Jepsen, Jane U. Hagen, Snorre B. Karlsen, Stein-Rune Ims, Rolf A. |
spellingShingle |
Jepsen, Jane U. Hagen, Snorre B. Karlsen, Stein-Rune Ims, Rolf A. Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
author_facet |
Jepsen, Jane U. Hagen, Snorre B. Karlsen, Stein-Rune Ims, Rolf A. |
author_sort |
Jepsen, Jane U. |
title |
Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
title_short |
Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
title_full |
Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
title_fullStr |
Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
title_full_unstemmed |
Phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
title_sort |
phase-dependent outbreak dynamics of geometrid moth linked to host plant phenology |
publisher |
The Royal Society |
publishDate |
2009 |
url |
http://dx.doi.org/10.1098/rspb.2009.1148 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.1148 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.1148 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 276, issue 1676, page 4119-4128 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2009.1148 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
276 |
container_issue |
1676 |
container_start_page |
4119 |
op_container_end_page |
4128 |
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1800751446923149312 |