International Bioacoustics Council (IBAC)

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The International Bioacoustics Council (IBAC) was founded in Århus, Denmark, in September 1969. Its objective is to promote international participation throughout the entire field of bioacoustical activity. Its primary achievement since then has been the organising of twenty bioacoustic symposia and congresses in twelve different countries. For further information about IBAC's origins, read the brief history; you can also find details of past and future meetings.

The subject of bioacoustics is principally a marriage between the fields of biology and physical acoustics. Given its multidisciplinary nature, IBAC aims to bring together, in informal settings, biologists from different specialisms (ethologists, physiologists, taxonomists, etc) with engineers, sound archivists and amateur sound recordists, to foster discussion and exchange of ideas.

Latest news:

• The XXII International Bioacoustics Congress will be held in Lisbon, Portugal, from 14-18 September 2009. Registration and abstract submission: deadline extended to 31 May. Invited speakers: Carl Gerhardt (University of Missouri, Columbia), Axel Michelsen (University of Southern Denmark), Michael Fine (Virginia Commonwealth University), Joseph Sisneros (University of Washington), Peter McGregor (Cornwall College).
  

• Selected papers from the XX International Bioacoustics Congress (Piran, Slovenia, 2005), published as "Advances in Bioacoustics II" are now available for free download.

• Read about the launch of the European Network of Bioacoustic Collections for Taxonomy, Systematics and Conservation

• The second "European workshop on animal sound research and libraries" was held during the XXI International Bioacoustic Congress in Pavia, 15-18 September 2007

What is bioacoustics?

Bioacoustics is the scientific study of biological sounds. It is concerned with the following topics:

• Sound production in animals, including anatomy and neurophysiological processes
• Sound propagation in water and air
• Vibrational communication of insects
• Biosonar or echolocation of bats and dolphins
• Ultrasonic signals (>20,000 Hz) of insects, rodents, bats and dolphins
• Infrasonic signals (<20 Hz) of large mammals
• Sound reception capabilities and mechanisms of animal hearing
• Ethology of animal acoustic communication
• Evolution, ontogeny and development of acoustic behaviour
• Relationships between animal sounds and their environment
• Effects of man-made sounds on animals
• Application of acoustic signals for taxonomic studies and for calibrating biodiversity
• Practical bioacoustic applications, in wildlife monitoring and in pest control

The development of bioacoustics dates effectively from the 1950s, when practical recording and analysing methods became readily available to the scientific community.