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Workshop on Active Sonar & Cetaceans (fwd)

Subject: Workshop on Active Sonar & Cetaceans (fwd)
From: Dave Mellinger <>
Date: Mon, 20 Jan 2003 10:39:46 -0800
Please respond to him, not to me.  --Dave Mellinger
 Active sonar, operating with sound source levels of up to 245 dB re
 1=B5Pa @ 1 m at frequencies mainly between 1 and 150 kHz, is frequently
 used for fish-finding, oceanography, charting and in military
 activities (for example locating submarines). Over the last six
 years, concern has been expressed over the potential impact these
 sounds may have upon cetaceans (particularly odontocetes like beaked
 whales), and post mortem studies of mass stranded animals in the
 Bahamas and, most recently, in the Canaries have revealed multifocal
 haemorrhaging and ear damage. The purpose of this workshop is to
 bring together whale biologists, pathologists, acousticians, and
 other representatives of the disciplines involved, to objectively
 review the existing evidence and, where detrimental effects are
 implicated, to identify possible mitigation measures. Attention will
 be given to species involved and any characteristics that may make
 them especially vulnerable, as well as to the nature of the sound
 source (sound levels, peak frequencies, usage, oceanographic
 conditions). If possible, a standardized protocol for dealing with
 potential future strandings will be developed, and research needs
 (such as controlled experiments) reviewed. And, finally, a list of
 recommended actions should be prepared for: a) cetacean scientists;
 b) government agencies; c) fisheries scientists and oceanographers;
 and d) the military. These might include guidelines for adoption
 before and during a sonar experiment, design of a standardized EIA
 model including investigation of the feasibility for time-area
 closures, and possible technological modifications of the sonar.
 The workshop will take place from 09:00-18:00 on Saturday 8th March
 2003 at the Las Palmas de Gran Canaria Convention Centre (Auditorio
 Alfredo Kraus) in Las Palmas, Gran Canaria, immediately before the
 start of the 17th Annual Conference of the European Cetacean Society.
 =46or those wishing to attend or offer a talk at this workshop, please
 contact Dr Peter Evans at: <[EMAIL PROTECTED]>, including
 a short paragraph on how your background experience relates to the
 topic. There is limited space available. The deadline for
 applications is 1st February.
 A programme will be posted to attendees by the middle of February.
 Please note that to obtain early registration fee reduction for the
 ECS Conference, the closing date is today - 17th January. Further
 details about the ECS Conference can be found at either of these web
 (<a  href=""; 
rel="nofollow"></a>) or on the
 Conference web site (<a  href=""; 
 The ECS Conference Theme is "MARINE MAMMALS AND SOUND". The theme
 allows presentations on the use of sounds to monitor, localise and
 identify marine mammals in their environment, the morphological and
 physiological aspects of sound production and reception, the
 mechanisms of communication and echolocation as well as the effects
 of natural and anthropogenic noise on cetacean behaviour, health and
 conservation. As usual, papers on all aspects of the biology,
 management and conservation of cetaceans and marine mammals in
 general will be included in the programme.
 Dr Peter GH Evans
 Sea Watch Foundation
 36 Windmill Road
 Oxford 0X3 7BX
 Tel:  44-(0)1865-764794
 Fax: 44 -(0)1865-764757
 Website: <a  href=""; 
 Home address:
 11 Jersey Road
 Oxford 0X4 4RT
 Tel: 01865-717276

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