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Bat Activity at a Small Wind Turbine in the Baltic Sea

Rydell, Jens LU and Wickman, Andreas (2015) In Acta Chiropterologica 17(2). p.359-364
Abstract

Activity of bats at an old wind park four km off the island of Gotland in the Baltic Sea was monitored during 50 nights from August to October 2013, using an automatic bat detector (Pettersson D500-X) mounted on one of the turbines. Single individuals or pairs of common noctules Nyctalus noctula were recorded on five occasions only (26 and 27 August), all in calm weather and when little or no rotor movement occurred. Since such conditions were unusual (five of 50 nights of observation) the visits by the bats were unlikely to be chance events (migrating bats passing the turbine), but more likely involved bats attracted to the turbines. However, no feeding buzzes were recorded and the bats never stayed near the turbine more than one... (More)

Activity of bats at an old wind park four km off the island of Gotland in the Baltic Sea was monitored during 50 nights from August to October 2013, using an automatic bat detector (Pettersson D500-X) mounted on one of the turbines. Single individuals or pairs of common noctules Nyctalus noctula were recorded on five occasions only (26 and 27 August), all in calm weather and when little or no rotor movement occurred. Since such conditions were unusual (five of 50 nights of observation) the visits by the bats were unlikely to be chance events (migrating bats passing the turbine), but more likely involved bats attracted to the turbines. However, no feeding buzzes were recorded and the bats never stayed near the turbine more than one minute. The turbines studied are lit by 250 W white lights and this could have been the reason why bats visited the turbines, because such lights potentially attract insects. The bats could not have been attracted to the turbines by any factor related of the movement of the rotor or the generator, such as Doppler-effects, noise, heat or electric fields.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
acoustic monitoring, Bat migration, Gotland, noctules, Nyctalus noctula, off-shore
in
Acta Chiropterologica
volume
17
issue
2
pages
6 pages
publisher
Museum and Institute of Zoology, Polish Academy of Sciences
external identifiers
  • scopus:84974602138
ISSN
1508-1109
DOI
10.3161/15081109ACC2015.17.2.011
language
English
LU publication?
yes
id
26245d8a-c660-484d-8f1a-4ecc9403b710
date added to LUP
2016-12-22 13:18:43
date last changed
2017-01-01 08:44:16
@article{26245d8a-c660-484d-8f1a-4ecc9403b710,
  abstract     = {<p>Activity of bats at an old wind park four km off the island of Gotland in the Baltic Sea was monitored during 50 nights from August to October 2013, using an automatic bat detector (Pettersson D500-X) mounted on one of the turbines. Single individuals or pairs of common noctules Nyctalus noctula were recorded on five occasions only (26 and 27 August), all in calm weather and when little or no rotor movement occurred. Since such conditions were unusual (five of 50 nights of observation) the visits by the bats were unlikely to be chance events (migrating bats passing the turbine), but more likely involved bats attracted to the turbines. However, no feeding buzzes were recorded and the bats never stayed near the turbine more than one minute. The turbines studied are lit by 250 W white lights and this could have been the reason why bats visited the turbines, because such lights potentially attract insects. The bats could not have been attracted to the turbines by any factor related of the movement of the rotor or the generator, such as Doppler-effects, noise, heat or electric fields.</p>},
  author       = {Rydell, Jens and Wickman, Andreas},
  issn         = {1508-1109},
  keyword      = {acoustic monitoring,Bat migration,Gotland,noctules,Nyctalus noctula,off-shore},
  language     = {eng},
  month        = {12},
  number       = {2},
  pages        = {359--364},
  publisher    = {Museum and Institute of Zoology, Polish Academy of Sciences},
  series       = {Acta Chiropterologica},
  title        = {Bat Activity at a Small Wind Turbine in the Baltic Sea},
  url          = {http://dx.doi.org/10.3161/15081109ACC2015.17.2.011},
  volume       = {17},
  year         = {2015},
}