Data and R script from: Emergence of functional prey depletion halo through penguin–krill behavioural dynamics
Data files
Jun 05, 2026 version files 622.16 KB
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divescaledata.csv
601.79 KB
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GLMMstats.R
17.41 KB
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README.md
2.97 KB
Jun 05, 2026 version files 622.16 KB
-
divescaledata.csv
601.79 KB
-
GLMMstats.R
17.41 KB
-
README.md
2.97 KB
Abstract
This dataset accompanies the paper “Emergence of functional prey depletion halo through penguin–krill behavioural dynamics” in Proceedings of the Royal Society B. The repository contains processed data describing Adélie penguin foraging behaviour under Antarctic sea ice, including dive-scale behavioural metrics, inferred feeding events and environmental variables used in the analyses. These data can be used to investigate predator–prey interactions, prey accessibility and foraging behaviour in central-place foraging marine predators. No ethical or legal restrictions apply to the reuse of these data beyond the terms of the repository license.
Authors: Hina T. Watanabe, Junichi Takagi, Akinori Takahashi
Journal: Proceedings of the Royal Society B: Biological Sciences
Date of data deposition (current version): [2026-05-27]
Description
This dataset accompanies the paper submitted to Proceedings of the Royal Society B.
It contains data on Adélie penguin foraging behaviour under Antarctic sea ice, including dive-scale behavioural metrics, inferred feeding events and environmental variables, as well as analysis code used to reproduce the statistical analyses.
File list
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divescaledata.csv: Dive data (Stime, Etime, maxDepth, diveDur, BirdID, BoutID, ForagingBoutID, etc.)
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GLMMstats.R: R script to perform statistical analyses reported in the manuscript in table 1. R script to generate the main figures (fig.3 & fig.4)
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README.md: This explanatory file
Variable description (divescaledata.csv as an example)
- BirdID: Unique identifier of individual penguins
- BoutID: Dive bout identifier
- ForagingBoutID: Foraging dive bout identifier
- Stime: Dive start time (yyyy/mm/dd hh:mm:ss)
- Etime: Dive end time (yyyy/mm/dd hh:mm:ss)
- maxDepth: Maximum dive depth (m)
- diveDur: Dive duration (s)
- Straightness: Path straightness index
- maxDepthF: Maximum depth reached during each foraging dive (m)
- elapsedBout: Time elapsed since the start of the foraging dive bout (s)
- nFE: Number of feeding events detected during each dive
- mtFE: Mean time from dive start to feeding events within a foraging dive (s)
- mdFE: Mean under-ice distance from dive start to feeding events within a foraging dive (m)
- patchDur: Duration between the first and last feeding events (s)
- FRpatch: Feeding rate within a prey patch (events per 100 s), calculated as 100 × nFE / patchDur.
- DistCol: Distance from the breeding colony (km)
- elapsedDate: Number of days elapsed since 26 December 2018
- Habitat: Sea-ice habitat type ("Tidal crack" = 0; "Lead" = 1)
- UTMy: Northing coordinate (UTM)
- UTMx: Easting coordinate (UTM)
Software
- R version: 4.4.1
- Packages: INLA, dplyr, ggplot2
Reproducibility
Analyses were conducted in R. Session information is provided below to facilitate reproducibility.
R version 4.4.1 (2024-06-14)
Platform: aarch64-apple-darwin20
Running under: macOS Sonoma 14.4
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib; LAPACK version 3.12.0
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
time zone: Asia/Tokyo
tzcode source: internal
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] ggplot2_3.5.2 dplyr_1.1.4 INLA_25.04.16 Matrix_1.7-0