Northern Gannet Breeding Season GPS Data from Cape St. Mary's NL Canada 2019 to 2022

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dc.contributor.authord'Entremont, Kyle J.N.
dc.contributor.authorDavoren, Gail K.
dc.contributor.authorMontevecchi, William A.
dc.date.accessioned2023-05-01T17:51:55Z
dc.date.available2023-05-01T17:51:55Z
dc.date.issued2023-05-01
dc.description.abstractSeabirds are constrained by central-place foraging during breeding, when the energy obtained from prey must outweigh the costs of travel, search, capture and transport. The distribution and phenology of the cold-blooded marine fishes they exploit are heavily influenced by oceanic climate. Northern gannets, the largest breeding seabird in the North Atlantic, use a generalist foraging strategy, preying on a wide array of pelagic fishes. They employ different for- aging tactics for different prey types, with rapid, shallow V-shaped dives used for large, powerful prey such as mackerel, and U-shaped dives for smaller forage fishes like capelin. Here we assess intra- and inter-annual differences in foraging effort and influences of prey availability at the southernmost colony of the species at Cape St. Mary’s, Newfoundland, Canada. We compared for- aging trip characteristics (total and maximum distance, directness, duration and number of dives) of parental gannets during the breeding seasons of 2019 (n = 10) and 2020 (n = 7) using GPS/time- depth recorders. Individual gannets shifted away from using U-shaped dives in early chick- rearing to primarily V-shaped dives in late chick-rearing. Shifts were abrupt and occurred in mid-August in 2019 and 2020. Maximum and total foraging trip distance and duration were sig- nificantly greater during early chick-rearing in 2020 than in 2019. Kernel density 50% utilization distributions were larger and expanded further from the colony during early chick-rearing in 2020 (7297 ± 1419 km2; mean ± SE) than 2019 (2382 ±797 km2). Increased foraging effort during early chick-rearing in 2020 was likely due to decreased capelin availability, resulting from earlier spawning, and greater variation in the timing of spawning among sites, which may have been influenced by warmer waters.
dc.identifier.doidoi:10.5441/001/1.5km7v2s3/1
dc.identifier.urihttps://datarepository.movebank.org/handle/10255/move.1593
dc.relation.ispartofdoi:10.5441/001/1.5km7v2s3
dc.relation.isreferencedbydoi:10.3354/meps14164
dc.rightsCC0 1.0 Universalen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/
dc.subjectanimal foraging
dc.subjectanimal movement
dc.subjectanimal tracking
dc.subjectGPS logger
dc.subjectGPS telemetry
dc.subjectMorus bassanus
dc.subjectnorthern gannet
dc.subjectseabirds
dc.subjecttime-depth recorder
dc.titleNorthern Gannet Breeding Season GPS Data from Cape St. Mary's NL Canada 2019 to 2022
dc.typeDataset
dspace.entity.typeData package
dwc.ScientificNameMorus bassanus
mdr.citation.BibTex
@misc{001/1_5km7v2s3/1,
  title = {Northern Gannet Breeding Season GPS Data from Cape St. Mary's NL Canada 2019 to 2022},
  author = {d'Entremont, KJN and Davoren, GK and Montevecchi, WA},
  year = {2023},
  URL = {http://dx.doi.org/10.5441/001/1.5km7v2s3/1},
  doi = {doi:10.5441/001/1.5km7v2s3/1},
  publisher = {Movebank data repository}
}
mdr.citation.CSE
d'Entremont KJN, Davoren GK, Montevecchi WA. 2023. Northern Gannet Breeding Season GPS Data from Cape St. Mary's NL Canada 2019 to 2022. Movebank Data Repository. https://doi.org/10.5441/001/1.5km7v2s3/1
mdr.citation.RIS
TY  - DATA
ID  - doi:10.5441/001/1.5km7v2s3/1
T1  - Northern Gannet Breeding Season GPS Data from Cape St. Mary's NL Canada 2019 to 2022
AU  - d'Entremont, Kyle J.N.
AU  - Davoren, Gail K.
AU  - Montevecchi, William A.
Y1  - 2023/05/01
KW  - animal foraging
KW  - animal movement
KW  - animal tracking
KW  - GPS logger
KW  - GPS telemetry
KW  - Morus bassanus
KW  - northern gannet
KW  - seabirds
KW  - time-depth recorder
KW  - Morus bassanus
PB  - Movebank data repository
UR  - http://dx.doi.org/10.5441/001/1.5km7v2s3/1
DO  - doi:10.5441/001/1.5km7v2s3/1
ER  -
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