Consequences of cross‐season demographic correlations for population viability
Abstract Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long‐lived species, but little is known about the degree of variation among spatially...
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Online Access: | http://dx.doi.org/10.1002/ece3.10312 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10312 |
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crwiley:10.1002/ece3.10312 2024-09-15T17:55:37+00:00 Consequences of cross‐season demographic correlations for population viability Layton‐Matthews, Kate Reiertsen, Tone K. Erikstad, Kjell‐Einar Anker‐Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert T. Newell, Mark A. Harris, Mike P. Miljødirektoratet Natural Environment Research Council Norges Forskningsråd 2023 http://dx.doi.org/10.1002/ece3.10312 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10312 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 13, issue 7 ISSN 2045-7758 2045-7758 journal-article 2023 crwiley https://doi.org/10.1002/ece3.10312 2024-08-22T04:17:51Z Abstract Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long‐lived species, but little is known about the degree of variation among spatially segregated populations of the same species in relation to environmental conditions. We assessed the relative importance of two cross‐season correlations in survival and productivity, for three Atlantic puffin ( Fratercula arctica ) populations with contrasting population trajectories and non‐overlapping year‐round distributions. The two correlations reflected either a relationship between adult survival prior to breeding on productivity, or a relationship between productivity and adult survival the subsequent year. Demographic rates and their correlations were estimated with an integrated population model, and their respective contributions to variation in population growth were calculated using a transient‐life table response experiment. For all three populations, demographic correlations were positive at both time lags, although their strength differed. Given the different year‐round distributions of these populations, this variation in the strength population‐level demographic correlations points to environmental conditions as an important driver of demographic variation through life‐history constraints. Consequently, the contributions of variances and correlations in demographic rates to population growth rates differed among puffin populations, which has implications for—particularly small—populations' viability under environmental change as positive correlations tend to reduce the stochastic population growth rate. Article in Journal/Newspaper Atlantic puffin fratercula Fratercula arctica Wiley Online Library Ecology and Evolution 13 7 |
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English |
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Abstract Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long‐lived species, but little is known about the degree of variation among spatially segregated populations of the same species in relation to environmental conditions. We assessed the relative importance of two cross‐season correlations in survival and productivity, for three Atlantic puffin ( Fratercula arctica ) populations with contrasting population trajectories and non‐overlapping year‐round distributions. The two correlations reflected either a relationship between adult survival prior to breeding on productivity, or a relationship between productivity and adult survival the subsequent year. Demographic rates and their correlations were estimated with an integrated population model, and their respective contributions to variation in population growth were calculated using a transient‐life table response experiment. For all three populations, demographic correlations were positive at both time lags, although their strength differed. Given the different year‐round distributions of these populations, this variation in the strength population‐level demographic correlations points to environmental conditions as an important driver of demographic variation through life‐history constraints. Consequently, the contributions of variances and correlations in demographic rates to population growth rates differed among puffin populations, which has implications for—particularly small—populations' viability under environmental change as positive correlations tend to reduce the stochastic population growth rate. |
author2 |
Miljødirektoratet Natural Environment Research Council Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Layton‐Matthews, Kate Reiertsen, Tone K. Erikstad, Kjell‐Einar Anker‐Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert T. Newell, Mark A. Harris, Mike P. |
spellingShingle |
Layton‐Matthews, Kate Reiertsen, Tone K. Erikstad, Kjell‐Einar Anker‐Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert T. Newell, Mark A. Harris, Mike P. Consequences of cross‐season demographic correlations for population viability |
author_facet |
Layton‐Matthews, Kate Reiertsen, Tone K. Erikstad, Kjell‐Einar Anker‐Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert T. Newell, Mark A. Harris, Mike P. |
author_sort |
Layton‐Matthews, Kate |
title |
Consequences of cross‐season demographic correlations for population viability |
title_short |
Consequences of cross‐season demographic correlations for population viability |
title_full |
Consequences of cross‐season demographic correlations for population viability |
title_fullStr |
Consequences of cross‐season demographic correlations for population viability |
title_full_unstemmed |
Consequences of cross‐season demographic correlations for population viability |
title_sort |
consequences of cross‐season demographic correlations for population viability |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ece3.10312 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10312 |
genre |
Atlantic puffin fratercula Fratercula arctica |
genre_facet |
Atlantic puffin fratercula Fratercula arctica |
op_source |
Ecology and Evolution volume 13, issue 7 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.10312 |
container_title |
Ecology and Evolution |
container_volume |
13 |
container_issue |
7 |
_version_ |
1810431874097479680 |