Data from: Behavioural flexibility in an Arctic seabird using two distinct marine habitats to survive the energetic constraints of winter

When using this dataset, please cite the original article.

Patterson A, Gilchrist HG, Robertson GJ, Hedd A, Fifield DA, Elliott KH. 2022. Behavioural flexibility in an Arctic seabird using two distinct marine habitats to survive the energetic constraints of winter. Movement Ecol. 10:45. doi:10.1186/s40462-022-00344-3

Additionally, please cite the Movebank data package:

Patterson A, Gilchrist HG, Robertson GJ, Hedd A, Fifield DA, Elliott KH (2022) Data from: Behavioural flexibility in an Arctic seabird using two distinct marine habitats to survive the energetic constraints of winter. Movebank Data Repository. doi:10.5441/001/1.81bs0nf7
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Package Identifier doi:10.5441/001/1.81bs0nf7  
 
Abstract Background: Homeothermic marine animals in Polar Regions face an energetic bottleneck in winter. The challenges of short days and cold temperatures are exacerbated for flying seabirds with small body size and limited fat stores. We use biologging approaches to examine how habitat, weather, and moon illumination influence behaviour and energetics of a marine bird species, thick-billed murres (Uria lomvia). Methods: We used temperature-depth-light recorders to examine strategies murres use to survive winter in the Northwest Atlantic, where contrasting currents create two distinct marine habitats: cold (−0.1 ± 1.2 °C), shallower water along the Labrador Shelf and warmer (3.1 ± 0.3 °C), deep water in the Labrador Basin. Results: In the cold shelf water, murres used a high-energy strategy, with more flying and less diving each day, resulting in high daily energy expenditure and also high apparent energy intake; this strategy was most evident in early winter when day lengths were shortest. By contrast, murres in warmer basin water employed a low-energy strategy, with less time flying and more time diving under low light conditions (nautical twilight and night). In warmer basin water, murres increased diving at night when the moon was more illuminated, likely taking advantage of diel vertically migrating prey. In warmer basin water, murres dove more at night and foraging efficiency increased under negative North Atlantic Oscillation (calmer ocean conditions). Conclusions: The proximity of two distinct marine habitats in this region allows individuals from a single species to use dual (low-energy/high-energy) strategies to overcome winter energy bottlenecks.
Keywords animal behavior, animal movement, animal tracking, Labrador sea, light-level logger, nocturnal foraging, seabirds, solar geolocation, temperature-depth-light recorders, thick-billed murre, Uria lomvia,

Thick-billed murre Patterson Coats meps13890_part-20180101-20180214.csv View File Details
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Thick-billed murre Patterson Coats meps13890_part-20180215-20180331.csv View File Details
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Thick-billed murre Patterson Coats meps13890_part-20190101-20190214.csv View File Details
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Thick-billed murre Patterson Coats meps13890_part-20190215-20190331.csv View File Details
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Thick-billed murre Patterson Coats meps13890_part-reference-data View File Details
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