Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose
Abstract Density regulation of the population growth rate occurs through negative feedbacks on underlying vital rates, in response to increasing population size. Here, we examine in a capital breeder how vital rates of different life‐history stages, their elasticities and population growth rates are...
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Online Access: | http://dx.doi.org/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13001 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 |
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crwiley:10.1111/1365-2656.13001 2024-06-02T08:02:36+00:00 Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose Layton‐Matthews, Kate Loonen, Maarten J. J. E. Hansen, Brage Bremset Coste, Christophe F. D. Sæther, Bernt‐Erik Grøtan, Vidar Koons, David N Nederlandse Organisatie voor Wetenschappelijk Onderzoek Utenriksdepartementet Rijksuniversiteit Groningen Norges Forskningsråd 2019 http://dx.doi.org/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13001 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 88, issue 8, page 1191-1201 ISSN 0021-8790 1365-2656 journal-article 2019 crwiley https://doi.org/10.1111/1365-2656.13001 2024-05-03T11:38:10Z Abstract Density regulation of the population growth rate occurs through negative feedbacks on underlying vital rates, in response to increasing population size. Here, we examine in a capital breeder how vital rates of different life‐history stages, their elasticities and population growth rates are affected by changes in population size. We developed an integrated population model for a local population of Svalbard barnacle geese, Branta leucopsis, using counts, reproductive data and individual‐based mark–recapture data (1990–2017) to model age class‐specific survival, reproduction and number of individuals. Based on these estimates, we quantified the changes in demographic structure and the effect of population size on age class‐specific vital rates and elasticities, as well as the population growth rate. Local density regulation at the breeding grounds acted to reduce population growth through negative effects on reproduction; however, population size could not explain substantial variation in survival rates, although there was some support for density‐dependent first‐year survival. With the use of prospective perturbation analysis of the density‐dependent projection matrix, we show that the elasticities to different vital rates changed as population size increased. As population size approached carrying capacity, the influence of reproductive rates and early‐life survival on the population growth rate was reduced, whereas the influence of adult survival increased. A retrospective perturbation analysis revealed that density dependence resulted in a positive contribution of reproductive rates, and a negative contribution of the numbers of individuals in the adult age class, to the realised population growth rate. The patterns of density dependence in this population of barnacle geese were different from those recorded in income breeding birds, where density regulation mainly occurs through an effect on early‐life survival. This indicates that the population dynamics of capital breeders, such as the barnacle ... Article in Journal/Newspaper Arctic Barnacle goose Branta leucopsis Svalbard Wiley Online Library Arctic Svalbard Journal of Animal Ecology 88 8 1191 1201 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Density regulation of the population growth rate occurs through negative feedbacks on underlying vital rates, in response to increasing population size. Here, we examine in a capital breeder how vital rates of different life‐history stages, their elasticities and population growth rates are affected by changes in population size. We developed an integrated population model for a local population of Svalbard barnacle geese, Branta leucopsis, using counts, reproductive data and individual‐based mark–recapture data (1990–2017) to model age class‐specific survival, reproduction and number of individuals. Based on these estimates, we quantified the changes in demographic structure and the effect of population size on age class‐specific vital rates and elasticities, as well as the population growth rate. Local density regulation at the breeding grounds acted to reduce population growth through negative effects on reproduction; however, population size could not explain substantial variation in survival rates, although there was some support for density‐dependent first‐year survival. With the use of prospective perturbation analysis of the density‐dependent projection matrix, we show that the elasticities to different vital rates changed as population size increased. As population size approached carrying capacity, the influence of reproductive rates and early‐life survival on the population growth rate was reduced, whereas the influence of adult survival increased. A retrospective perturbation analysis revealed that density dependence resulted in a positive contribution of reproductive rates, and a negative contribution of the numbers of individuals in the adult age class, to the realised population growth rate. The patterns of density dependence in this population of barnacle geese were different from those recorded in income breeding birds, where density regulation mainly occurs through an effect on early‐life survival. This indicates that the population dynamics of capital breeders, such as the barnacle ... |
author2 |
Koons, David N Nederlandse Organisatie voor Wetenschappelijk Onderzoek Utenriksdepartementet Rijksuniversiteit Groningen Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Layton‐Matthews, Kate Loonen, Maarten J. J. E. Hansen, Brage Bremset Coste, Christophe F. D. Sæther, Bernt‐Erik Grøtan, Vidar |
spellingShingle |
Layton‐Matthews, Kate Loonen, Maarten J. J. E. Hansen, Brage Bremset Coste, Christophe F. D. Sæther, Bernt‐Erik Grøtan, Vidar Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
author_facet |
Layton‐Matthews, Kate Loonen, Maarten J. J. E. Hansen, Brage Bremset Coste, Christophe F. D. Sæther, Bernt‐Erik Grøtan, Vidar |
author_sort |
Layton‐Matthews, Kate |
title |
Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
title_short |
Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
title_full |
Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
title_fullStr |
Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
title_full_unstemmed |
Density‐dependent population dynamics of a high Arctic capital breeder, the barnacle goose |
title_sort |
density‐dependent population dynamics of a high arctic capital breeder, the barnacle goose |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13001 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13001 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Barnacle goose Branta leucopsis Svalbard |
genre_facet |
Arctic Barnacle goose Branta leucopsis Svalbard |
op_source |
Journal of Animal Ecology volume 88, issue 8, page 1191-1201 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2656.13001 |
container_title |
Journal of Animal Ecology |
container_volume |
88 |
container_issue |
8 |
container_start_page |
1191 |
op_container_end_page |
1201 |
_version_ |
1800747087583772672 |