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The second meeting of the Planning Group for the Coordination of Acoustic Surveys off Northwest Africa was held in Dakar, Senegal, from 28 to 29 October 2003. The general objective of the Planning Group is to plan the coordination of acoustic surveys in the region including intercalibration of research vessels and to act as a forum for discussion on issues important to acoustic surveys such as standardization of methods, acoustic research and training. The Planning Group noted that the three countries that possess their own research vessels had all conducted acoustic surveys in 2003 and that progress had been made in terms of planning and implementation of surveys as well as in data analysis and reporting. Nevertheless, there are still some issues that need to be addressed including the coordination of the national surveys to ensure complete coverage of the pelagic stocks, studies to reduce the noise level of the different research vessels, and the operation of the pelagic trawl to improve sampling of the target pelagic species.--Publisher's description.
The scientists from the Northwest African region expressed their commitment to conduct their own acoustic surveys. All of the local research vessels conducted acoustic surveys in 2004. The ability of running acoustic surveys in the sub-region has developed to a good level and focus in the future should be on the development of human capacity and to resolve the recurrent technical problems of trawl performance, noise discrimination and data storage. The timeframe of the continued surveys with R/V DR. FRIDTJOF NANSEN and the support through the Nansen Programme is unknown and high priority must therefore be given to the improvement of scientists skills in acoustic abundance estimation.
The report finds that all of the local research vessels conducted acoustic surveys in 2005 and major improvements have been made in standardisation of procedures and processing of data. Some problems still persist, such as problems with trawling using the pelagic trawl and problems related to noise levels, but these issues are now being addressed. Plans were made for a second parallel survey and intercalibration exercise to take place in October- December 2005. It was recommended that the countries in the Northwest African region, Senegal, the Gambia, Mauritania and Morocco should co-ordinate their survey effort to conduct two annual regional acoustic surveys, during the cold and warm seasons respectively.
On cover and title page: International cooperation with the Nansen Programme GCP/INT/730/NOR