Multi‐colony tracking of two pelagic seabirds with contrasting flight capability illustrates how windscapes shape migratory movements at an ocean‐basin scale

Amélineau, Françoise; Tarroux, Arnaud; Lacombe, Simon; Bråthen, Vegard S.; Descamps, Sebastien; Ekker, Morten; Fauchald, Per; Johansen, Malin K.; Moe, Børge; Anker‐Nilssen, Tycho; Bogdanova, Maria I. ORCID: https://orcid.org/0000-0003-3360-1059; Bringsvor, Ingar S.; Chastel, Olivier; Christensen‐Dalsgaard, Signe; Daunt, Francis ORCID: https://orcid.org/0000-0003-4638-3388; Dehnhard, Nina; Einar Erikstad, Kjell; Ezhov, Aleksey; Gavrilo, Maria; Hansen, Erpur S.; Harris, Mike P. ORCID: https://orcid.org/0000-0002-9559-5830; Helgason, Hálfdán H.; Langset, Magdalene; Léandri‐Breton, Don‐Jean; Lorentsen, Svein‐Håkon; Merkel, Benjamin; Newell, Mark; Olsen, Bergur; Reiertsen, Tone K.; Systad, Geir H.R.; Thorarinsson, Thorkell L.; Åström, Jens; Strøm, Hallvard. 2024 Multi‐colony tracking of two pelagic seabirds with contrasting flight capability illustrates how windscapes shape migratory movements at an ocean‐basin scale. Ecography, 2024 (2), e06496. 15, pp. 10.1111/ecog.06496

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Abstract/Summary

Migration is a common trait among many animals allowing the exploitation of spatiotemporally variable resources. It often implies high energetic costs to cover large distances, for example between breeding and wintering grounds. For flying or swimming animals, the adequate use of winds and currents can help reduce the associated energetic costs. Migratory seabirds are good models because they dwell in habitats characterized by strong winds while undertaking very long migrations. We tested the hypothesis that seabirds migrate through areas with favourable winds. To that end, we used the SEATRACK dataset, a multi-colony geolocator tracking dataset, for two North Atlantic seabirds with contrasting flight capabilities, the black-legged kittiwake Rissa tridactyla and the Atlantic puffin Fratercula arctica, and wind data from the ERA5 climate reanalysis model. Both species had on average positive wind support during migration. Their main migratory routes were similar and followed seasonally prevailing winds. The general migratory movement had a loop-shape at the scale of the North Atlantic, with an autumn route (southward) along the east coast of Greenland, and a spring route (northward) closer to the British Isles. While migrating, both species had higher wind support in spring than in autumn. Kittiwakes migrated farther and benefited from higher wind support than puffins on average. The variation in wind conditions encountered while migrating was linked to the geographical location of the colonies. Generally, northernmost colonies had a better wind support in autumn while the southernmost colonies had a better wind support in spring, with some exceptions. Our study helps understanding how the physical environment shapes animal migration, which is crucial to further predict how migrants will be impacted by ongoing environmental changes.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1111/ecog.06496
UKCEH and CEH Sections/Science Areas:	Biodiversity (Science Area 2017-) UKCEH Fellows
ISSN:	0906-7590
Additional Information. Not used in RCUK Gateway to Research.:	Open Access paper - full text available via Official URL link.
Additional Keywords:	animal movement, bird flight, Fratercula arctica, migration, Rissa tridactyla, wind
NORA Subject Terms:	Ecology and Environment Zoology Data and Information
Related URLs:	Other Dataset
Date made live:	06 Nov 2023 16:19 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/536123

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