New plankton laser meter «KARP» — comprehensive autonomous plankton recorder

A prototype of a new laser plankton recorder was developed and tested.The device description is presented. The possibility of registering nauplii, cysts and mature individuals of artemia, fry of various species of fish and some species of plankton were investigated in fish tank and aquariums. The results of field tests of the model of the device in July 2019, carried out jointly with the specialists of the Tyumen branch of “VNIRO” on the Solyonoe Lake of the Tyumen Region, are presented. The impact of daylight on the layout was evaluated. Solutions have been proposed to minimize it. The preliminary results of the refinement of the device were shown and promising options for its use as an additional sensor in the probing and towed CTD complexes at the RV were proposed. The device is being developed to estimate the size and quantitative composition of mesoplankton, which is the food base of fish stocks as well as for the field research related to the industrial breeding of artemia.

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