EIMWTEcho Integration-Midwater Trawl
References in periodicals archive ?
EIMWT surveys have been carried out on a 24 hour per day basis.
If the demersal trawl gear that was introduced in 1982 sampled age 1 fish with greater efficiency than before, this could partially explain the unusually high proportion of age 1 fish observed by the EIMWT method in 1979.
Extrapolation of the echo integration results to the bottom increases the overall EIMWT estimate by a relatively small amount.
As we recognize the various problems associated with bottom trawl and EIMWT surveys we must address them in a systematic manner.