Data from: Local prey shortages drive foraging costs and breeding success in a declining seabird, the Atlantic puffin ...
As more and more species face anthropogenic threats, understanding causes of population declines in vulnerable taxa is essential. However, long-term datasets, ideal to identify lasting or indirect effects on fitness measures such as those caused by environmental factors, are not always available. He...
| Main Authors: | , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2021
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.z08kprrbx https://datadryad.org/stash/dataset/doi:10.5061/dryad.z08kprrbx |
| Summary: | As more and more species face anthropogenic threats, understanding causes of population declines in vulnerable taxa is essential. However, long-term datasets, ideal to identify lasting or indirect effects on fitness measures such as those caused by environmental factors, are not always available. Here we use a single year but multi-population approach on populations with contrasting demographic trends to identify possible drivers and mechanisms of seabird population changes in the north-east Atlantic, using the Atlantic puffin, a declining species, as a model system. We combine miniature GPS trackers with camera traps and DNA metabarcoding techniques on four populations across the puffins’ main breeding range to provide the most comprehensive study of the species’ foraging ecology to date. We find that puffins use a dual foraging tactic combining short and long foraging trips in all four populations, but declining populations in southern Iceland and north-west Norway have much greater foraging ranges, which ... : There are six data files, each corresponding to a different type of data, and a ReadMe file which details the content of each file. Bird_metadata.csv contains data on the colony, id, weight and sex of each tagged bird GPS_tracking_data.csv contains the raw GPS tracking data. Camera_traps_feeding_visits.csv contains data on feeding visits recorded from the camera traps Prey_size_from_video_data.csv contains prey size data measured from the camera trap footage Video stills for prey size measurements.zip contains one still per video used to measure prey size DNA_metabarcoding.csv contains the DNA metabarcoding data The tracking data can also be visualised on the Birdlife Seabird Tracking Database. ... |
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