Annual survival in female white‐winged scoters and lesser scaup
ABSTRACT Quantifying survival and understanding underlying sources of variation are important for developing population models and informing management decisions. We estimated apparent survival (i.e., true survival less permanent emigration) for adult female white‐winged scoters ( Melanitta fusca )...
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crwiley:10.1002/jwmg.21674 2023-10-29T02:37:51+01:00 Annual survival in female white‐winged scoters and lesser scaup Slattery, Stuart M. Clark, Robert G. Environment and Climate Change Canada Natural Sciences and Engineering Research Council of Canada 2019 http://dx.doi.org/10.1002/jwmg.21674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjwmg.21674 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jwmg.21674 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jwmg.21674 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Journal of Wildlife Management volume 83, issue 5, page 1151-1162 ISSN 0022-541X 1937-2817 Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics journal-article 2019 crwiley https://doi.org/10.1002/jwmg.21674 2023-10-02T17:07:41Z ABSTRACT Quantifying survival and understanding underlying sources of variation are important for developing population models and informing management decisions. We estimated apparent survival (i.e., true survival less permanent emigration) for adult female white‐winged scoters ( Melanitta fusca ) and lesser scaup ( Aythya affinis ) breeding at a northern boreal forest site in western Canada, 2002–2008. We also evaluated variation in survival relative to indices of breeding status, individual quality, spring weather conditions, local small‐mammal abundance, and overwinter climate. Breeding female scoters had higher apparent survival than did nonbreeding females, suggesting that breeders had higher survival or fidelity to the study area, or that more nonbreeders were transient birds that may have bred elsewhere in subsequent years. Apparent survival rate for breeding female scoters was unrelated to other individual and environmental covariates. Nest‐trapped female scaup had higher apparent survival rates than did prenesting females captured in decoy traps, implying that more pre‐nesters dispersed permanently or died after marking. Nesting female scaup with higher body condition or those in years when small mammals were more abundant had higher apparent survival; associations between survival and other environmental covariates were less certain. Overall, apparent survival rate of breeding adult female scoters was lower than reported for scoters from other North American locations or for other sea duck species, whereas estimates for nesting female scaup were comparable with those from other boreal and prairie‐parkland locations. Our results indicate that for scaup in this region, factors influencing female body condition, such as maintaining high‐quality habitat, areas with abundant food or low disturbance, could improve annual survival. © The Wildlife Society, 2019 Article in Journal/Newspaper Melanitta fusca Wiley Online Library (via Crossref) The Journal of Wildlife Management 83 5 1151 1162 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Slattery, Stuart M. Clark, Robert G. Annual survival in female white‐winged scoters and lesser scaup |
topic_facet |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
description |
ABSTRACT Quantifying survival and understanding underlying sources of variation are important for developing population models and informing management decisions. We estimated apparent survival (i.e., true survival less permanent emigration) for adult female white‐winged scoters ( Melanitta fusca ) and lesser scaup ( Aythya affinis ) breeding at a northern boreal forest site in western Canada, 2002–2008. We also evaluated variation in survival relative to indices of breeding status, individual quality, spring weather conditions, local small‐mammal abundance, and overwinter climate. Breeding female scoters had higher apparent survival than did nonbreeding females, suggesting that breeders had higher survival or fidelity to the study area, or that more nonbreeders were transient birds that may have bred elsewhere in subsequent years. Apparent survival rate for breeding female scoters was unrelated to other individual and environmental covariates. Nest‐trapped female scaup had higher apparent survival rates than did prenesting females captured in decoy traps, implying that more pre‐nesters dispersed permanently or died after marking. Nesting female scaup with higher body condition or those in years when small mammals were more abundant had higher apparent survival; associations between survival and other environmental covariates were less certain. Overall, apparent survival rate of breeding adult female scoters was lower than reported for scoters from other North American locations or for other sea duck species, whereas estimates for nesting female scaup were comparable with those from other boreal and prairie‐parkland locations. Our results indicate that for scaup in this region, factors influencing female body condition, such as maintaining high‐quality habitat, areas with abundant food or low disturbance, could improve annual survival. © The Wildlife Society, 2019 |
author2 |
Environment and Climate Change Canada Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Slattery, Stuart M. Clark, Robert G. |
author_facet |
Slattery, Stuart M. Clark, Robert G. |
author_sort |
Slattery, Stuart M. |
title |
Annual survival in female white‐winged scoters and lesser scaup |
title_short |
Annual survival in female white‐winged scoters and lesser scaup |
title_full |
Annual survival in female white‐winged scoters and lesser scaup |
title_fullStr |
Annual survival in female white‐winged scoters and lesser scaup |
title_full_unstemmed |
Annual survival in female white‐winged scoters and lesser scaup |
title_sort |
annual survival in female white‐winged scoters and lesser scaup |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/jwmg.21674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjwmg.21674 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jwmg.21674 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jwmg.21674 |
genre |
Melanitta fusca |
genre_facet |
Melanitta fusca |
op_source |
The Journal of Wildlife Management volume 83, issue 5, page 1151-1162 ISSN 0022-541X 1937-2817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jwmg.21674 |
container_title |
The Journal of Wildlife Management |
container_volume |
83 |
container_issue |
5 |
container_start_page |
1151 |
op_container_end_page |
1162 |
_version_ |
1781063022497759232 |