Data for: Molt timing and duration of northern elephant seals (2020-2022)
Individual variation in life history timing influences predator-prey interactions, information transfer, disease transmission, ecosystem services, and resource subsidies. Unfortunately, precise estimates of individual variability and plasticity in the timing of critical life history events are rare...
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ftzenodo:oai:zenodo.org:7297875 2023-05-15T16:05:40+02:00 Data for: Molt timing and duration of northern elephant seals (2020-2022) Beltran, Roxanne Costa, Dan Condit, Rick Robinson, Patrick 2022-11-06 https://zenodo.org/record/7297875 https://doi.org/10.7291/D1C10C unknown doi:10.5281/zenodo.7255685 https://zenodo.org/communities/dryad https://zenodo.org/record/7297875 https://doi.org/10.7291/D1C10C oai:zenodo.org:7297875 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.7291/D1C10C10.5281/zenodo.7255685 2023-03-10T13:51:04Z Individual variation in life history timing influences predator-prey interactions, information transfer, disease transmission, ecosystem services, and resource subsidies. Unfortunately, precise estimates of individual variability and plasticity in the timing of critical life history events are rare and often rely on cross-sectional observational data. Understanding how life history timing varies across individuals requires longitudinal sampling and more advanced analytical techniques for quantifying onset and progression based on imperfect observations. We utilized a Bayesian hierarchical logistic function to examine variation in timing of fur replacement (molt) across individuals, ages, and sexes of 483 northern elephant seals Mirounga angustirostris to understand the prevalence of population-level synchrony in life history timing and underscore its implications. We found that the visible molt was extremely rapid (6.2 days in adult females and 10.5 days in juveniles) and that the wide range of molt start dates (60-day span even within a single age-sex category) resulted in extreme asynchrony across individuals. Across all life history events associated with the molt, individual variation overwhelmed age and sex differences in timing; 99% of the variation in haul-out duration was among individuals within age-sex categories and only 1% between categories. Similarly, 82% of variation in molt start date and 59% in molt duration was among individuals within age-sex categories. We discovered a strong correlation between molt timing, molt duration, and haul-out duration in adult female seals across consecutive seasons, suggesting that individual differences are repeatable. These findings emphasize that longitudinal sampling approaches are critical for explaining ecological patterns and processes when population-level variation in life history timing is high. Dataset Elephant Seals Zenodo |
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description |
Individual variation in life history timing influences predator-prey interactions, information transfer, disease transmission, ecosystem services, and resource subsidies. Unfortunately, precise estimates of individual variability and plasticity in the timing of critical life history events are rare and often rely on cross-sectional observational data. Understanding how life history timing varies across individuals requires longitudinal sampling and more advanced analytical techniques for quantifying onset and progression based on imperfect observations. We utilized a Bayesian hierarchical logistic function to examine variation in timing of fur replacement (molt) across individuals, ages, and sexes of 483 northern elephant seals Mirounga angustirostris to understand the prevalence of population-level synchrony in life history timing and underscore its implications. We found that the visible molt was extremely rapid (6.2 days in adult females and 10.5 days in juveniles) and that the wide range of molt start dates (60-day span even within a single age-sex category) resulted in extreme asynchrony across individuals. Across all life history events associated with the molt, individual variation overwhelmed age and sex differences in timing; 99% of the variation in haul-out duration was among individuals within age-sex categories and only 1% between categories. Similarly, 82% of variation in molt start date and 59% in molt duration was among individuals within age-sex categories. We discovered a strong correlation between molt timing, molt duration, and haul-out duration in adult female seals across consecutive seasons, suggesting that individual differences are repeatable. These findings emphasize that longitudinal sampling approaches are critical for explaining ecological patterns and processes when population-level variation in life history timing is high. |
format |
Dataset |
author |
Beltran, Roxanne Costa, Dan Condit, Rick Robinson, Patrick |
spellingShingle |
Beltran, Roxanne Costa, Dan Condit, Rick Robinson, Patrick Data for: Molt timing and duration of northern elephant seals (2020-2022) |
author_facet |
Beltran, Roxanne Costa, Dan Condit, Rick Robinson, Patrick |
author_sort |
Beltran, Roxanne |
title |
Data for: Molt timing and duration of northern elephant seals (2020-2022) |
title_short |
Data for: Molt timing and duration of northern elephant seals (2020-2022) |
title_full |
Data for: Molt timing and duration of northern elephant seals (2020-2022) |
title_fullStr |
Data for: Molt timing and duration of northern elephant seals (2020-2022) |
title_full_unstemmed |
Data for: Molt timing and duration of northern elephant seals (2020-2022) |
title_sort |
data for: molt timing and duration of northern elephant seals (2020-2022) |
publishDate |
2022 |
url |
https://zenodo.org/record/7297875 https://doi.org/10.7291/D1C10C |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_relation |
doi:10.5281/zenodo.7255685 https://zenodo.org/communities/dryad https://zenodo.org/record/7297875 https://doi.org/10.7291/D1C10C oai:zenodo.org:7297875 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.7291/D1C10C10.5281/zenodo.7255685 |
_version_ |
1766401572029333504 |