Contrasting effects of climate and population density over time and life-stages in a long-lived seabird
International audience 1. Although population responses to environmental variability have been extensively studiedfor many organisms, few studies have considered early-life stages owing to the inherent difficultiesin tracking the fate of young individuals. However, young individuals are expected to...
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ftunivnantes:oai:HAL:hal-01502827v1 2023-05-15T16:00:57+02:00 Contrasting effects of climate and population density over time and life-stages in a long-lived seabird Fay, Rémi Barbraud, Christophe Delord, Karine Weimerskirch, Henri Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2017 https://hal.archives-ouvertes.fr/hal-01502827 https://doi.org/10.1111/1365-2435.12831 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.12831 hal-01502827 https://hal.archives-ouvertes.fr/hal-01502827 doi:10.1111/1365-2435.12831 PUBMEDCENTRAL: PMC5518763 ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.archives-ouvertes.fr/hal-01502827 Functional Ecology, 2017, 31, pp.1275-1284. ⟨10.1111/1365-2435.12831⟩ Diomedea exulans early-life vital rate juvenile survival long-term effect recruitment age [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.1111/1365-2435.12831 2023-01-04T00:06:13Z International audience 1. Although population responses to environmental variability have been extensively studiedfor many organisms, few studies have considered early-life stages owing to the inherent difficultiesin tracking the fate of young individuals. However, young individuals are expected to bemore sensitive to environmental stochasticity owing to their inexperience and lower competitiveabilities. Thus, they are keys to understand demographic responses of an age-structuredpopulation to environmental variability.2. In this study, we used capture–recapture modelling, based on a 49 year-long individualbasedlongitudinal monitoring dataset, to investigate climatic and population density effects onimmature demographic parameters in a long-lived seabird, the wandering albatross.3. We provide evidence that climate and population size affected both survival and recruitmentage of young individuals although in different ways according to the trait. We found thatearly-life survival was mainly affected by population density, whereas recruitment age variationappeared to be better explained by climatic conditions, with a surprising long-term effect ofclimate. While population size explained 60% of the variation in juvenile survival, the averageSouthern Annular Mode over the five previous years explained 52% of variation inrecruitment age.4. In addition, although early-life survival was consistently negatively affected by populationsize, the relationship between recruitment age and population size shifted from negative topositive over time from the 1970s to 2000s, showing that density dependence mechanisms cantemporarily disappear.5. Finally, we found that similar climatic conditions may affect individual performances inopposite ways according to the life stage of individuals. This result underlines the critical needto assess age-specific functional responses to environmental variability to allow accuratedemographic predictions. By revealing the poorly known demographic process of younger ageclasses, the results of ... Article in Journal/Newspaper Diomedea exulans Wandering Albatross Université de Nantes: HAL-UNIV-NANTES Functional Ecology 31 6 1275 1284 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Diomedea exulans early-life vital rate juvenile survival long-term effect recruitment age [SDE]Environmental Sciences |
spellingShingle |
Diomedea exulans early-life vital rate juvenile survival long-term effect recruitment age [SDE]Environmental Sciences Fay, Rémi Barbraud, Christophe Delord, Karine Weimerskirch, Henri Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
topic_facet |
Diomedea exulans early-life vital rate juvenile survival long-term effect recruitment age [SDE]Environmental Sciences |
description |
International audience 1. Although population responses to environmental variability have been extensively studiedfor many organisms, few studies have considered early-life stages owing to the inherent difficultiesin tracking the fate of young individuals. However, young individuals are expected to bemore sensitive to environmental stochasticity owing to their inexperience and lower competitiveabilities. Thus, they are keys to understand demographic responses of an age-structuredpopulation to environmental variability.2. In this study, we used capture–recapture modelling, based on a 49 year-long individualbasedlongitudinal monitoring dataset, to investigate climatic and population density effects onimmature demographic parameters in a long-lived seabird, the wandering albatross.3. We provide evidence that climate and population size affected both survival and recruitmentage of young individuals although in different ways according to the trait. We found thatearly-life survival was mainly affected by population density, whereas recruitment age variationappeared to be better explained by climatic conditions, with a surprising long-term effect ofclimate. While population size explained 60% of the variation in juvenile survival, the averageSouthern Annular Mode over the five previous years explained 52% of variation inrecruitment age.4. In addition, although early-life survival was consistently negatively affected by populationsize, the relationship between recruitment age and population size shifted from negative topositive over time from the 1970s to 2000s, showing that density dependence mechanisms cantemporarily disappear.5. Finally, we found that similar climatic conditions may affect individual performances inopposite ways according to the life stage of individuals. This result underlines the critical needto assess age-specific functional responses to environmental variability to allow accuratedemographic predictions. By revealing the poorly known demographic process of younger ageclasses, the results of ... |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Fay, Rémi Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_facet |
Fay, Rémi Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_sort |
Fay, Rémi |
title |
Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
title_short |
Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
title_full |
Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
title_fullStr |
Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
title_full_unstemmed |
Contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
title_sort |
contrasting effects of climate and population density over time and life-stages in a long-lived seabird |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01502827 https://doi.org/10.1111/1365-2435.12831 |
genre |
Diomedea exulans Wandering Albatross |
genre_facet |
Diomedea exulans Wandering Albatross |
op_source |
ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.archives-ouvertes.fr/hal-01502827 Functional Ecology, 2017, 31, pp.1275-1284. ⟨10.1111/1365-2435.12831⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.12831 hal-01502827 https://hal.archives-ouvertes.fr/hal-01502827 doi:10.1111/1365-2435.12831 PUBMEDCENTRAL: PMC5518763 |
op_doi |
https://doi.org/10.1111/1365-2435.12831 |
container_title |
Functional Ecology |
container_volume |
31 |
container_issue |
6 |
container_start_page |
1275 |
op_container_end_page |
1284 |
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1766396959283740672 |