A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features

Lieber L, Langrock R, Nimmo-Smith WAM (2021)
Proceedings of the Royal Society B: Biological Sciences 288(1949).

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Lieber, Lilian; Langrock, RolandUniBi; Nimmo-Smith, W. Alex M.
Abstract / Bemerkung
Understanding physical mechanisms underlying seabird foraging is fundamental to predict responses to coastal change. For instance, turbulence in the water arising from natural or anthropogenic structures can affect foraging opportunities in tidal seas. Yet, identifying ecologically important localized turbulence features (e.g. upwellings approximately 10–100 m) is limited by observational scale, and this knowledge gap is magnified in volatile predators. Here, using a drone-based approach, we present the tracking of surface-foraging terns (143 trajectories belonging to three tern species) and dynamic turbulent surface flow features in synchrony. We thereby provide the earliest evidence that localized turbulence features can present physical foraging cues. Incorporating evolving vorticity and upwelling features within a hidden Markov model, we show that terns were more likely to actively forage as the strength of the underlying vorticity feature increased, while conspicuous upwellings ahead of the flight path presented a strong physical cue to stay in transit behaviour. This clearly encapsulates the importance of prevalent turbulence features as localized foraging cues. Our quantitative approach therefore offers the opportunity to unlock knowledge gaps in seabird sensory and foraging ecology on hitherto unobtainable scales. Finally, it lays the foundation to predict responses to coastal change to inform sustainable ocean development.
Erscheinungsjahr
2021
Zeitschriftentitel
Proceedings of the Royal Society B: Biological Sciences
Band
288
Ausgabe
1949
ISSN
0962-8452
eISSN
1471-2954
Page URI
https://pub.uni-bielefeld.de/record/2954297

Zitieren

Lieber L, Langrock R, Nimmo-Smith WAM. A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features. Proceedings of the Royal Society B: Biological Sciences. 2021;288(1949).
Lieber, L., Langrock, R., & Nimmo-Smith, W. A. M. (2021). A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features. Proceedings of the Royal Society B: Biological Sciences, 288(1949). https://doi.org/10.1098/rspb.2021.0592
Lieber, L., Langrock, R., and Nimmo-Smith, W. A. M. (2021). A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features. Proceedings of the Royal Society B: Biological Sciences 288.
Lieber, L., Langrock, R., & Nimmo-Smith, W.A.M., 2021. A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features. Proceedings of the Royal Society B: Biological Sciences, 288(1949).
L. Lieber, R. Langrock, and W.A.M. Nimmo-Smith, “A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features”, Proceedings of the Royal Society B: Biological Sciences, vol. 288, 2021.
Lieber, L., Langrock, R., Nimmo-Smith, W.A.M.: A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features. Proceedings of the Royal Society B: Biological Sciences. 288, (2021).
Lieber, Lilian, Langrock, Roland, and Nimmo-Smith, W. Alex M. “A bird's-eye view on turbulence: seabird foraging associations with evolving surface flow features”. Proceedings of the Royal Society B: Biological Sciences 288.1949 (2021).

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