Small changes in timing of breeding among subarctic passerines over a 32‐year period
Many bird populations in temperate regions have advanced their timing of breeding in response to a warming climate in recent decades. However, long‐term trends in temperature differ geographically and between seasons, and so do responses of local breeding populations. Data on breeding bird phenology...
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crwiley:10.1111/ibi.12682 2024-09-15T18:37:51+00:00 Small changes in timing of breeding among subarctic passerines over a 32‐year period Ram, Dafne Nyholm, NILS ERIK INGEMAR Arlt, Debora Lindström, Åke Crafoordska Stiftelsen 2018 http://dx.doi.org/10.1111/ibi.12682 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fibi.12682 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12682 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ibi.12682 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 161, issue 4, page 730-743 ISSN 0019-1019 1474-919X journal-article 2018 crwiley https://doi.org/10.1111/ibi.12682 2024-08-27T04:29:14Z Many bird populations in temperate regions have advanced their timing of breeding in response to a warming climate in recent decades. However, long‐term trends in temperature differ geographically and between seasons, and so do responses of local breeding populations. Data on breeding bird phenology from subarctic and arctic passerine populations are scarce, and relatively little data has been recorded in open‐nesting species. We investigated the timing of breeding and its relationship to spring temperature of 14 mainly open‐nesting passerine species in subarctic Swedish Lapland over a period of 32 years (1984–2015). We estimated timing of breeding from the progress of post‐juvenile moult in mist‐netted birds, a new method exploring the fact that the progress of post‐juvenile moult correlates with age. Although there was a numerical tendency for earlier breeding in most species (on average −0.09 days/year), changes were statistically significant in only three species (by −0.16 to −0.23 days/year). These figures are relatively low compared with what has been found in other long‐term studies but are similar to a few other studies in subarctic areas. Generally, annual hatching dates were negatively correlated with mean temperature in May. This correlation was stronger in long‐distance than in short‐distance migrants. Although annual temperatures at high northern latitudes have increased over recent decades, there was no long‐term increase in mean temperature in May over the study period at this subarctic site. This is probably the main reason why there were only small long‐term changes in hatching dates. Article in Journal/Newspaper Subarctic Lapland Wiley Online Library Ibis 161 4 730 743 |
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English |
description |
Many bird populations in temperate regions have advanced their timing of breeding in response to a warming climate in recent decades. However, long‐term trends in temperature differ geographically and between seasons, and so do responses of local breeding populations. Data on breeding bird phenology from subarctic and arctic passerine populations are scarce, and relatively little data has been recorded in open‐nesting species. We investigated the timing of breeding and its relationship to spring temperature of 14 mainly open‐nesting passerine species in subarctic Swedish Lapland over a period of 32 years (1984–2015). We estimated timing of breeding from the progress of post‐juvenile moult in mist‐netted birds, a new method exploring the fact that the progress of post‐juvenile moult correlates with age. Although there was a numerical tendency for earlier breeding in most species (on average −0.09 days/year), changes were statistically significant in only three species (by −0.16 to −0.23 days/year). These figures are relatively low compared with what has been found in other long‐term studies but are similar to a few other studies in subarctic areas. Generally, annual hatching dates were negatively correlated with mean temperature in May. This correlation was stronger in long‐distance than in short‐distance migrants. Although annual temperatures at high northern latitudes have increased over recent decades, there was no long‐term increase in mean temperature in May over the study period at this subarctic site. This is probably the main reason why there were only small long‐term changes in hatching dates. |
author2 |
Crafoordska Stiftelsen |
format |
Article in Journal/Newspaper |
author |
Ram, Dafne Nyholm, NILS ERIK INGEMAR Arlt, Debora Lindström, Åke |
spellingShingle |
Ram, Dafne Nyholm, NILS ERIK INGEMAR Arlt, Debora Lindström, Åke Small changes in timing of breeding among subarctic passerines over a 32‐year period |
author_facet |
Ram, Dafne Nyholm, NILS ERIK INGEMAR Arlt, Debora Lindström, Åke |
author_sort |
Ram, Dafne |
title |
Small changes in timing of breeding among subarctic passerines over a 32‐year period |
title_short |
Small changes in timing of breeding among subarctic passerines over a 32‐year period |
title_full |
Small changes in timing of breeding among subarctic passerines over a 32‐year period |
title_fullStr |
Small changes in timing of breeding among subarctic passerines over a 32‐year period |
title_full_unstemmed |
Small changes in timing of breeding among subarctic passerines over a 32‐year period |
title_sort |
small changes in timing of breeding among subarctic passerines over a 32‐year period |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/ibi.12682 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fibi.12682 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12682 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ibi.12682 |
genre |
Subarctic Lapland |
genre_facet |
Subarctic Lapland |
op_source |
Ibis volume 161, issue 4, page 730-743 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ibi.12682 |
container_title |
Ibis |
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161 |
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4 |
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730 |
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743 |
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1810482194820366336 |