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| Content Provider | Springer Nature Link |
|---|---|
| Author | Skiba, Reinald |
| Copyright Year | 2000 |
| Abstract | Bergmann et al. (1988) formed the tentative hypothesis that the spatial distribution of different “rain call” dialects in the Chaffinch (Fringilla coelebs) could be caused by the acoustic environment. In concrete terms, it was supposed that the “huit” call was used predominantly in urban districts with a high level of traffic noise because this type of sound is more capable of penetrating the traffic noise. In order to test this hypothesis, a study was conducted in the towns Remscheid, Solingen and Wuppertal. Analysis of traffic noise showed that the sound pressure decreases with ascending frequency and reaches an insignificant value between 4,0 and 5,0 kHz. In view of the hearing capability of the Chaffinch it seemed that “rain calls” with frequencies of 4,5 to 7,0 kHz are best for piercing traffic noise. However, the main frequencies of the “huit” call do not exceed 4,2 kHz, which means that an adaptation to traffic noise is improbable. In addition to this the rain calls of different dialects were classified into noise zones. No dependence of dialect on traffic noise intensity could be established. Summing up, the cautious hypothesis of Bergmann et al. (1988) could not be corroborated.Bergmann et al. (1988) haben die „vorsichtige Hypothese“ aufgestellt, daß für die räumliche Verteilung der unterschiedlichen Dialekte des Regenrufes (Brutzeitrufes) des Buchfinken (Fringilla coelebs) die akustische Umwelt mit verantwortlich sein könnte. Konkret wurde vermutet, daß der „huit“-Ruf bevorzugt in städtischen Gebieten mit hoher Verkehrslärmbelastung benutzt wird, da dieser reintonige Dialekttyp Lärmbereiche besonders gut durchdringen würde. Zur Prüfung dieser Hypothese wurde in den kreisfreien Städten Remscheid, Solingen und Wuppertal eine Untersuchung durchgeführt. Analysen des Verkehrslärms ergaben, daß mit zunehmender Frequenz der Schalldruck abnimmt und zwischen 4,0 und 5,0 kHz auf einen unbedeutenden Wert abfällt. Für die Durchdringung von Verkehrslärm durch Regenrufe werden unter Berücksichtigung der Hörfähigkeit eines Buchfinken 4,5 bis 7,0 kHz als optimal angesehen. Da die Hauptfrequenz des „huit“-Rufes nicht 4,2 kHz überschreitet, ist eine Adaptation an den Verkehrslärm unwahrscheinlich. Außerdem wurden die Regenrufe unterschiedlicher Dialekte den einzelnen Lärmbelastungszonen zugeordnet. Es konnte keine Abhängigkeit der Dialekttypen von der Lärmbelastung festgestellt werden. Insgesamt konnte die „vorsichtige Hypothese“ von Bergmann et al. (1988) nicht bestätigt werden. |
| Starting Page | 160 |
| Ending Page | 167 |
| Page Count | 8 |
| File Format | |
| ISSN | 00218375 |
| Journal | Journal für Ornithologie |
| Volume Number | 141 |
| Issue Number | 2 |
| e-ISSN | 14390361 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2000-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Chaffinch dialect voice selection by noise Animal Ecology Evolutionary Biology Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Animal Science and Zoology |
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