Consequences of cross-season demographic correlations for population viability
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 segregate...
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Online Access: | https://hdl.handle.net/11250/3088129 https://doi.org/10.1002/ece3.10312 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/3088129 2023-10-09T21:49:49+02:00 Consequences of cross-season demographic correlations for population viability Layton-Matthews, Kate Reiertsen, Tone Kristin Erikstad, Kjell E. Anker-Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert Newell, Mark A Harris, Mike P. 2023 application/pdf https://hdl.handle.net/11250/3088129 https://doi.org/10.1002/ece3.10312 eng eng urn:issn:2045-7758 https://hdl.handle.net/11250/3088129 https://doi.org/10.1002/ece3.10312 cristin:2166981 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 13 Ecology and Evolution 7 Peer reviewed Journal article 2023 ftntnutrondheimi https://doi.org/10.1002/ece3.10312 2023-09-13T22:46:27Z 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. publishedVersion Article in Journal/Newspaper Atlantic puffin fratercula Fratercula arctica NTNU Open Archive (Norwegian University of Science and Technology) Ecology and Evolution 13 7 |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Layton-Matthews, Kate Reiertsen, Tone Kristin Erikstad, Kjell E. Anker-Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert Newell, Mark A Harris, Mike P. |
spellingShingle |
Layton-Matthews, Kate Reiertsen, Tone Kristin Erikstad, Kjell E. Anker-Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert Newell, Mark A Harris, Mike P. Consequences of cross-season demographic correlations for population viability |
author_facet |
Layton-Matthews, Kate Reiertsen, Tone Kristin Erikstad, Kjell E. Anker-Nilssen, Tycho Daunt, Francis Wanless, Sarah Barrett, Robert 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 |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3088129 https://doi.org/10.1002/ece3.10312 |
genre |
Atlantic puffin fratercula Fratercula arctica |
genre_facet |
Atlantic puffin fratercula Fratercula arctica |
op_source |
13 Ecology and Evolution 7 |
op_relation |
urn:issn:2045-7758 https://hdl.handle.net/11250/3088129 https://doi.org/10.1002/ece3.10312 cristin:2166981 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.1002/ece3.10312 |
container_title |
Ecology and Evolution |
container_volume |
13 |
container_issue |
7 |
_version_ |
1779312844606537728 |