摘要:

To establish a framework for discussing mammalian vocalizations, relevant terminology and concepts from the theory of nonlinear dynamics are introduced. It is suggested that a variety of nonlinear phenomena including subharmonics, biphonation, and deterministic chaos are normally occurring phonatory events. The whole spectrum of these phenomena can be found in the repertoire of the African wild dogLycaon pictus.In addition, examples of nonlinear phenomena in a wide range of other mammalian taxa will be presented. Moreover, some artifacts in sound spectrographic analysis are listed which may be misinterpreted as nonlinear phenomena.

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753394

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

摘要:

The Asiatic wild dog or dholeCuon alpinusis a threatened social canid that uses a repetitive whistle call to maintain group contact in dense habitats. Spectrographic analysis revealed significant differences between the whistles of captive dholes, allowing callers to be reliably identified. The most important discriminatory characteristics were the period from the start of one syllable to the next, the fundamental frequency, and the maximum frequency. The individual distinctiveness of the whistle is discussed in terms of its functional significance and possible survey applications.

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753395

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

摘要:

We describe equipment that controls the operation of flash guns for use in stereophotogrammetry and enables recording or the playback of bat calls to be synchronised with the photographic data. This equipment can readily be built using standard components and is suitable for use in the field.

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753396

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753397

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753398

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753399

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753400

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753401

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753402

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1998.9753393

出版商:Taylor & Francis Group    

年代:1998

数据来源: Taylor