Hydroacoustic detection of food waste - a method to estimate maximum food intake of fish populations in sea cages
Working paper
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http://hdl.handle.net/11250/104733Utgivelsesdato
1990Metadata
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This report is not to be cited without prior reference to the authorSammendrag
A linear relationship between echo energy and amount of salmon dry food was established.
Measurements were carried out both for food batches (5-400 gram) and single pellets. For
a certain amount of food, the echo energy decreased when pellet size increased. The
relationships allowed hydroacoustic detection of small amounts of food waste. Maximum
food intake of a salmon population was determined as the amount of food delivered by the
feeder before food waste was detected.