Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset
Synchronous reproduction of birds has often been explained by benefits from nesting together, but this concept fails to explain observed intraspecific variation and climate-mediated changes of breeding synchrony. Here, we present a theoretical model of birds that store resources for reproduction (ca...
Published in: | The American Naturalist |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/nesting-synchrony-and-clutch-size-in-migratory-birds(662c98c4-ad2d-4bb7-916e-56dffd4d201b).html https://doi.org/10.1086/716064 https://curis.ku.dk/ws/files/284171040/Nesting_Synchrony_and_Clutch_Size_in_Migratory_Birds.pdf |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/662c98c4-ad2d-4bb7-916e-56dffd4d201b |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/662c98c4-ad2d-4bb7-916e-56dffd4d201b 2024-06-09T07:45:27+00:00 Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset Ejsmond, Anna Forchhammer, Mads Varpe, Øystein Jónsson, Jón Einar Jørgensen, Christian 2021 application/pdf https://curis.ku.dk/portal/da/publications/nesting-synchrony-and-clutch-size-in-migratory-birds(662c98c4-ad2d-4bb7-916e-56dffd4d201b).html https://doi.org/10.1086/716064 https://curis.ku.dk/ws/files/284171040/Nesting_Synchrony_and_Clutch_Size_in_Migratory_Birds.pdf eng eng info:eu-repo/semantics/openAccess Ejsmond , A , Forchhammer , M , Varpe , Ø , Jónsson , J E & Jørgensen , C 2021 , ' Nesting Synchrony and Clutch Size in Migratory Birds : Capital versus Income Breeding Determines Responses to Variable Spring Onset ' , American Naturalist , vol. 198 , no. 4 , pp. E122-E135 . https://doi.org/10.1086/716064 Breeding synchrony Capital breeding Clutch size Common eider Dynamic programming Timing of breeding article 2021 ftcopenhagenunip https://doi.org/10.1086/716064 2024-05-16T11:29:21Z Synchronous reproduction of birds has often been explained by benefits from nesting together, but this concept fails to explain observed intraspecific variation and climate-mediated changes of breeding synchrony. Here, we present a theoretical model of birds that store resources for reproduction (capital breeders) to show how breeding synchrony, clutch size, and offspring recruitment respond to changes in timing of first possible breeding date. Our approach is based on individual fitness maximization when both prebreeding foraging and offspring development are time constrained. The model predicts less synchronous breeding, smaller clutch size, and higher chances for offspring recruitment in capital breeding birds that advance their nesting. For contrast, we also show that birds that need to acquire resources during egg laying (in-come breeders) do not change nesting synchrony but increase clutch size along with earlier breeding. The prediction of stronger nesting synchronization of capital breeders in years with late nesting onset is confirmed by empirical data on breeding synchrony of a high-latitude capital breeding sea duck, the common eider (Somateria mollissima). We predict that in warming high-latitude ecosystems, bird species that depend on stored reserves for reproduction are expected to desynchronize their nesting. Article in Journal/Newspaper Common Eider Somateria mollissima University of Copenhagen: Research The American Naturalist 198 4 E122 E135 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Breeding synchrony Capital breeding Clutch size Common eider Dynamic programming Timing of breeding |
spellingShingle |
Breeding synchrony Capital breeding Clutch size Common eider Dynamic programming Timing of breeding Ejsmond, Anna Forchhammer, Mads Varpe, Øystein Jónsson, Jón Einar Jørgensen, Christian Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
topic_facet |
Breeding synchrony Capital breeding Clutch size Common eider Dynamic programming Timing of breeding |
description |
Synchronous reproduction of birds has often been explained by benefits from nesting together, but this concept fails to explain observed intraspecific variation and climate-mediated changes of breeding synchrony. Here, we present a theoretical model of birds that store resources for reproduction (capital breeders) to show how breeding synchrony, clutch size, and offspring recruitment respond to changes in timing of first possible breeding date. Our approach is based on individual fitness maximization when both prebreeding foraging and offspring development are time constrained. The model predicts less synchronous breeding, smaller clutch size, and higher chances for offspring recruitment in capital breeding birds that advance their nesting. For contrast, we also show that birds that need to acquire resources during egg laying (in-come breeders) do not change nesting synchrony but increase clutch size along with earlier breeding. The prediction of stronger nesting synchronization of capital breeders in years with late nesting onset is confirmed by empirical data on breeding synchrony of a high-latitude capital breeding sea duck, the common eider (Somateria mollissima). We predict that in warming high-latitude ecosystems, bird species that depend on stored reserves for reproduction are expected to desynchronize their nesting. |
format |
Article in Journal/Newspaper |
author |
Ejsmond, Anna Forchhammer, Mads Varpe, Øystein Jónsson, Jón Einar Jørgensen, Christian |
author_facet |
Ejsmond, Anna Forchhammer, Mads Varpe, Øystein Jónsson, Jón Einar Jørgensen, Christian |
author_sort |
Ejsmond, Anna |
title |
Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
title_short |
Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
title_full |
Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
title_fullStr |
Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
title_full_unstemmed |
Nesting Synchrony and Clutch Size in Migratory Birds:Capital versus Income Breeding Determines Responses to Variable Spring Onset |
title_sort |
nesting synchrony and clutch size in migratory birds:capital versus income breeding determines responses to variable spring onset |
publishDate |
2021 |
url |
https://curis.ku.dk/portal/da/publications/nesting-synchrony-and-clutch-size-in-migratory-birds(662c98c4-ad2d-4bb7-916e-56dffd4d201b).html https://doi.org/10.1086/716064 https://curis.ku.dk/ws/files/284171040/Nesting_Synchrony_and_Clutch_Size_in_Migratory_Birds.pdf |
genre |
Common Eider Somateria mollissima |
genre_facet |
Common Eider Somateria mollissima |
op_source |
Ejsmond , A , Forchhammer , M , Varpe , Ø , Jónsson , J E & Jørgensen , C 2021 , ' Nesting Synchrony and Clutch Size in Migratory Birds : Capital versus Income Breeding Determines Responses to Variable Spring Onset ' , American Naturalist , vol. 198 , no. 4 , pp. E122-E135 . https://doi.org/10.1086/716064 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1086/716064 |
container_title |
The American Naturalist |
container_volume |
198 |
container_issue |
4 |
container_start_page |
E122 |
op_container_end_page |
E135 |
_version_ |
1801374820520165376 |