Publikation:

Determinants of spring migration departure decision in a bat

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2017

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1um4l7ubmozfx1
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https://doi.org/10.1098/rsbl.2017.0395
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Biology letters. 2017, 13(9), 20170395. ISSN 1744-9561. eISSN 1744-957X. Available under: doi: 10.1098/rsbl.2017.0395

Zusammenfassung

Migratory decisions in birds are closely tied to environmental cues and fat stores, but it remains unknown if the same variables trigger bat migration. To learn more about the rare phenomenon of bat migration, we studied departure decisions of female common noctules (Nyctalus noctula) in southern Germany. We did not find the fattening period that modulates departure decisions in birds. Female noctules departed after a regular evening foraging session, uniformly heading northeast. As the day of year increased, migratory decisions were based on the interactions among wind speed, wind direction and air pressure. As the migration season progressed, bats were likely to migrate on nights with higher air pressure and faster tail winds in the direction of travel, and also show high probability of migration on low-pressure nights with slow head winds. Common noctules thus monitor complex environmental conditions to find the optimal migration night.

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570 Biowissenschaften, Biologie

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ISO 690DECHMANN, Dina K. N., Martin WIKELSKI, Diego ELLIS SOTO, Kamran SAFI, Michael Teague O'MARA, 2017. Determinants of spring migration departure decision in a bat. In: Biology letters. 2017, 13(9), 20170395. ISSN 1744-9561. eISSN 1744-957X. Available under: doi: 10.1098/rsbl.2017.0395
BibTex
@article{Dechmann2017-09Deter-40657,
  year={2017},
  doi={10.1098/rsbl.2017.0395},
  title={Determinants of spring migration departure decision in a bat},
  number={9},
  volume={13},
  issn={1744-9561},
  journal={Biology letters},
  author={Dechmann, Dina K. N. and Wikelski, Martin and Ellis Soto, Diego and Safi, Kamran and O'Mara, Michael Teague},
  note={Article Number: 20170395}
}
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