Hi Bernie, I did similar thoughts. It is very likely that low
frequency human noise doesn't affect echolocation directly (by
masking for example). However, I'm wondering about any other possible
effect not necessarily linked with high frequency echolocation.
Gianni
At 15.42 14/11/2008, you wrote:
>Got some considerable stuff on large mammals, frogs and insects, but
>not bats, Gianni. This is probably because, except for the high whine
>of jet engines and some turbines (that tend to disperse the greater
>the distance from the source and is more typically industrial noise
>generated in enclosed spaces) there isn't a whole lot of anthrophony
>(human noise) that extends out into bat ultrasonic range. Recent
>recordings I've made with distant traffic and aircraft (both light and
>commercial) haven't shown much, if any, impact for those reasons, most
>likely. These are either hoary or Myotis.
>
>Bernie
>
>On Nov 14, 2008, at 12:31 AM, Gianni Pavan wrote:
>
> > hi all,
> > lately I'm getting interested in the impact of noise on natural
> > habitats. Effects of noise on birds and frogs is known.
> > But what about bats ? Please let me know if you have any info or
> > literature reference about the topic.
> >
> > Gianni
> >
> > ----------------------------------------------------------
> > Gianni Pavan
> > Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
> > Universita' degli Studi di Pavia, Via Taramelli 24, 27100 PAVIA,
> > ITALIA
> > Phone +39-0382-987874 Fax +39-02-700-32921
> > Email <gpavan%40cibra.unipv.it>
> <gianni.pavan%40unipv.it>
> > Web <http://www.unipv.it/cibra>http://www.unipv.it/cibra
> > ----------------------------------------------------------
> >
> >
> >
>
>
>
>Nessun virus nel messaggio in arrivo.
>Controllato da AVG - http://www.avg.com
>Versione: 8.0.175 / Database dei virus: 270.9.3/1786 - Data di
>rilascio: 13/11/2008 18.01
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Gianni Pavan
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universita' degli Studi di Pavia, Via Taramelli 24, 27100 PAVIA, ITALIA
Phone +39-0382-987874 Fax +39-02-700-32921
Email
Web http://www.unipv.it/cibra
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