Finding the key to efficient and sustainable fishing.
Early information on the expected fish size distribution is the key to efficient and sustainable fishing. The aim of the DABGRAF-project is to estimate the fish size distribution of a school based on data from a sideward pointing wideband echosounder.
IMR-scientist Egil Ona and CMR-scientist Armin Pobitzer are creating new tools for efficient and sustainable fishing. Photo: Gunn Janne Myrseth, Head of Communication, CMR.
DABGRAF is a joint project of the Institute of Marine Research (IMR) and CMR, funded by the Norwegian Seafood Research Fund. The aim of the project is to estimate the fish size distribution of a school based on data from a sideward pointing wideband echosounder using av specially built narrow beam transducer. This is of particular interest in the context of purse seine fishing, where early information on the expected fish size distribution is a key parameter for efficient and sustainable fishing.
This week IMR scientist Egil Ona and CMR scientist Armin Pobitzer presented the project results at a conference by Norwegian Seafood Research Fund with about 110 participants. The news is that through this new knowledge, it will be possible at an early stage to obtain information about the size of the individual fish and the size distribution inside the border fish schools. This information can be used by the fisherman in order to decide whether or not to set the seine.
Besides the time-saving aspect for the fisherman, avoiding unnecessary catches is also key to increase sustainability in the fishing industry. CMR has done the programming of a new software for this tasks.
The software has been tested on 5 surveys on herring and mackerel on board G.O. Sars.