Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa
Several species of migratory swifts breed in the Western Palearctic, but they differ in reproductive traits and nonbreeding areas explored in Africa. We examined survival and recapture probabilities of two species of swifts by capture–mark–recapture data collected in northern Italy (Pallid Swift Apu...
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Online Access: | http://hdl.handle.net/11579/114499 https://doi.org/10.1002/ece3.6525 |
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ftunipiemonteori:oai:iris.uniupo.it:11579/114499 2024-02-11T09:59:06+01:00 Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa Giovanni Boano Irene Pellegrino Mauro Ferri Marco Cucco Fausto Minelli Susanne Åkesson Boano, GIOVANNI FRANCESCO Pellegrino, Irene Ferri, Mauro Cucco, Marco Minelli, Fausto Åkesson, Susanne 2020 STAMPA http://hdl.handle.net/11579/114499 https://doi.org/10.1002/ece3.6525 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000555651800079 volume:10 firstpage:7916 lastpage:7928 numberofpages:13 journal:ECOLOGY AND EVOLUTION http://hdl.handle.net/11579/114499 doi:10.1002/ece3.6525 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85087490767 info:eu-repo/semantics/openAccess Annual survival rate Apus apus Apus pallidus capture-mark-recapture data climatic anomalies drought rainfall ringing recoveries wintering area info:eu-repo/semantics/article 2020 ftunipiemonteori https://doi.org/10.1002/ece3.6525 2024-01-24T18:15:32Z Several species of migratory swifts breed in the Western Palearctic, but they differ in reproductive traits and nonbreeding areas explored in Africa. We examined survival and recapture probabilities of two species of swifts by capture–mark–recapture data collected in northern Italy (Pallid Swift Apus pallidus in Carmagnola, Turin, and Common Swift Apus apus in Guiglia, Modena) in the breeding season (May–July). Apparent survival rates were relatively high (>71%), comparable to other studies of European swifts, but showed marked annual variations. We used geolocators to establish the exact wintering areas of birds breeding in our study colonies. Common Swifts explored the Sahel zone during migration and spent the winter in SE Africa, while the Pallid Swifts remained in the Sahel zone for a longer time, shifting locations southeast down to Cameroun and Nigeria later in winter. These movements followed the seasonal rains from north to south (October to December). In both species, we found large yearly differences in survival probabilities related to different climatic indices. In the Pallid Swift, wintering in Western Africa, the Sahel rainfall index best explained survival, with driest seasons associated with reduced survival. In the Common Swift, wintering in SE Africa, the El Niño–Southern Oscillation (ENSO) cycle performed significantly better than Sahel rainfall or North Atlantic Oscillation (NAO). Extreme events and precipitation anomalies in Eastern Africa during La Niña events resulted in reduced survival probabilities in Common Swifts. Our study shows that the two species of swifts have similar average annual survival, but their survival varies between years and is strongly affected by different climatic drivers associated with their respective wintering areas. This finding could suggest important ecological diversification that should be taken into account when comparing survival and area use of similar species that migrate between temperate breeding areas and tropical wintering areas. Article in Journal/Newspaper Apus apus North Atlantic North Atlantic oscillation Università degli Studi del Piemonte Orientale: CINECA IRIS Ecology and Evolution 10 14 7916 7928 |
institution |
Open Polar |
collection |
Università degli Studi del Piemonte Orientale: CINECA IRIS |
op_collection_id |
ftunipiemonteori |
language |
English |
topic |
Annual survival rate Apus apus Apus pallidus capture-mark-recapture data climatic anomalies drought rainfall ringing recoveries wintering area |
spellingShingle |
Annual survival rate Apus apus Apus pallidus capture-mark-recapture data climatic anomalies drought rainfall ringing recoveries wintering area Giovanni Boano Irene Pellegrino Mauro Ferri Marco Cucco Fausto Minelli Susanne Åkesson Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
topic_facet |
Annual survival rate Apus apus Apus pallidus capture-mark-recapture data climatic anomalies drought rainfall ringing recoveries wintering area |
description |
Several species of migratory swifts breed in the Western Palearctic, but they differ in reproductive traits and nonbreeding areas explored in Africa. We examined survival and recapture probabilities of two species of swifts by capture–mark–recapture data collected in northern Italy (Pallid Swift Apus pallidus in Carmagnola, Turin, and Common Swift Apus apus in Guiglia, Modena) in the breeding season (May–July). Apparent survival rates were relatively high (>71%), comparable to other studies of European swifts, but showed marked annual variations. We used geolocators to establish the exact wintering areas of birds breeding in our study colonies. Common Swifts explored the Sahel zone during migration and spent the winter in SE Africa, while the Pallid Swifts remained in the Sahel zone for a longer time, shifting locations southeast down to Cameroun and Nigeria later in winter. These movements followed the seasonal rains from north to south (October to December). In both species, we found large yearly differences in survival probabilities related to different climatic indices. In the Pallid Swift, wintering in Western Africa, the Sahel rainfall index best explained survival, with driest seasons associated with reduced survival. In the Common Swift, wintering in SE Africa, the El Niño–Southern Oscillation (ENSO) cycle performed significantly better than Sahel rainfall or North Atlantic Oscillation (NAO). Extreme events and precipitation anomalies in Eastern Africa during La Niña events resulted in reduced survival probabilities in Common Swifts. Our study shows that the two species of swifts have similar average annual survival, but their survival varies between years and is strongly affected by different climatic drivers associated with their respective wintering areas. This finding could suggest important ecological diversification that should be taken into account when comparing survival and area use of similar species that migrate between temperate breeding areas and tropical wintering areas. |
author2 |
Boano, GIOVANNI FRANCESCO Pellegrino, Irene Ferri, Mauro Cucco, Marco Minelli, Fausto Åkesson, Susanne |
format |
Article in Journal/Newspaper |
author |
Giovanni Boano Irene Pellegrino Mauro Ferri Marco Cucco Fausto Minelli Susanne Åkesson |
author_facet |
Giovanni Boano Irene Pellegrino Mauro Ferri Marco Cucco Fausto Minelli Susanne Åkesson |
author_sort |
Giovanni Boano |
title |
Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
title_short |
Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
title_full |
Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
title_fullStr |
Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
title_full_unstemmed |
Climate anomalies affect annual survival rates of swifts wintering in sub‐Saharan Africa |
title_sort |
climate anomalies affect annual survival rates of swifts wintering in sub‐saharan africa |
publishDate |
2020 |
url |
http://hdl.handle.net/11579/114499 https://doi.org/10.1002/ece3.6525 |
genre |
Apus apus North Atlantic North Atlantic oscillation |
genre_facet |
Apus apus North Atlantic North Atlantic oscillation |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000555651800079 volume:10 firstpage:7916 lastpage:7928 numberofpages:13 journal:ECOLOGY AND EVOLUTION http://hdl.handle.net/11579/114499 doi:10.1002/ece3.6525 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85087490767 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ece3.6525 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
14 |
container_start_page |
7916 |
op_container_end_page |
7928 |
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1790595069000024064 |