Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats
ABSTRACT Several boreal insect species respond to smoke and heat generated by forest fires and use recent burns to reproduce in high numbers. Some of these species are rare or uncommon in undisturbed forests, and the contribution of recently burned habitats to their population dynamics has been deem...
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crwiley:10.1111/j.1472-4642.2007.00452.x 2024-06-02T08:06:29+00:00 Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats Saint‐Germain, Michel Drapeau, Pierre Buddle, Christopher M. 2007 http://dx.doi.org/10.1111/j.1472-4642.2007.00452.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1472-4642.2007.00452.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1472-4642.2007.00452.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Diversity and Distributions volume 14, issue 4, page 713-720 ISSN 1366-9516 1472-4642 journal-article 2007 crwiley https://doi.org/10.1111/j.1472-4642.2007.00452.x 2024-05-03T11:29:35Z ABSTRACT Several boreal insect species respond to smoke and heat generated by forest fires and use recent burns to reproduce in high numbers. Some of these species are rare or uncommon in undisturbed forests, and the contribution of recently burned habitats to their population dynamics has been deemed crucial by some to their long‐term persistence. Consequently, the severe decline seen in some species in Fennoscandia has been frequently linked with fire suppression. In this paper, we explore some aspects of the spatial dynamics of pyrophilous insect populations in relation to the expected relative contribution of burned and unburned habitats to their global population dynamics. Forest fires are, throughout the boreal forest biome, generally highly aggregated in some years while rare in most other years. The low connectivity between fire events and the typical life cycle seen in these species make it improbable that recent burns act as significant population sources. This leads us to suggest that populations of pyrophilous species may be more limited by the adequacy of the unburned matrix than by the occurrence of fire events. Moreover, by combining an age‐class distribution model and a dead wood availability model, we show that the quality of the unburned matrix increases in landscapes with longer fire cycles, in which pyrophilous insects should persist at higher population levels. We conclude that the degradation of the unburned habitat better explains the decline of pyrophilous insects than fire suppression alone. Article in Journal/Newspaper Fennoscandia Wiley Online Library Diversity and Distributions 14 4 713 720 |
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Wiley Online Library |
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English |
description |
ABSTRACT Several boreal insect species respond to smoke and heat generated by forest fires and use recent burns to reproduce in high numbers. Some of these species are rare or uncommon in undisturbed forests, and the contribution of recently burned habitats to their population dynamics has been deemed crucial by some to their long‐term persistence. Consequently, the severe decline seen in some species in Fennoscandia has been frequently linked with fire suppression. In this paper, we explore some aspects of the spatial dynamics of pyrophilous insect populations in relation to the expected relative contribution of burned and unburned habitats to their global population dynamics. Forest fires are, throughout the boreal forest biome, generally highly aggregated in some years while rare in most other years. The low connectivity between fire events and the typical life cycle seen in these species make it improbable that recent burns act as significant population sources. This leads us to suggest that populations of pyrophilous species may be more limited by the adequacy of the unburned matrix than by the occurrence of fire events. Moreover, by combining an age‐class distribution model and a dead wood availability model, we show that the quality of the unburned matrix increases in landscapes with longer fire cycles, in which pyrophilous insects should persist at higher population levels. We conclude that the degradation of the unburned habitat better explains the decline of pyrophilous insects than fire suppression alone. |
format |
Article in Journal/Newspaper |
author |
Saint‐Germain, Michel Drapeau, Pierre Buddle, Christopher M. |
spellingShingle |
Saint‐Germain, Michel Drapeau, Pierre Buddle, Christopher M. Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
author_facet |
Saint‐Germain, Michel Drapeau, Pierre Buddle, Christopher M. |
author_sort |
Saint‐Germain, Michel |
title |
Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
title_short |
Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
title_full |
Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
title_fullStr |
Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
title_full_unstemmed |
Persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
title_sort |
persistence of pyrophilous insects in fire‐driven boreal forests: population dynamics in burned and unburned habitats |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1472-4642.2007.00452.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1472-4642.2007.00452.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1472-4642.2007.00452.x |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Diversity and Distributions volume 14, issue 4, page 713-720 ISSN 1366-9516 1472-4642 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1472-4642.2007.00452.x |
container_title |
Diversity and Distributions |
container_volume |
14 |
container_issue |
4 |
container_start_page |
713 |
op_container_end_page |
720 |
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1800751436975308800 |