Publikacje naukowe Artur Żuliński
Tytuł: Assessment of Innovative Selective Codends in Baltic Cod Fishing
Autor/Autorzy: P.Zalewski, P.Nowakowski, K.Berest, G.Krzemień, J.Artyszuk, A.Żuliński, M.Kasprowicz
Miejsce publikacji: IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea),14-16 Oct. 2024
Rok: 2024
Słowa kluczowe: Baltic fishery, selective fishing, bottom trawl design, ultracross codend, diffuser
Abstrakt: The objective of the presented study was assessment of the selectivity properties of three codends designed in Maritime University of Szczecin, Poland for Baltic cod fishing: 1) an ultracross codend of 120 mm square mesh, 2) ultracross codend with additional devices reducing the speed of water flow - one tarpaulin diffuser and one net confusor of 120 mm mesh, 3) ultracross codend with two tarpaulin diffusers and two net confusors of 120 mm mesh. Validation of these codends selectivity was done by comparison of single trawls using each tested codend results with results of trawls using T90 codend and of trawls using a double (twin) bottom trawl set deployed in various variants of innovative, T90 and herring codends. The results of the study indicate that the use of an ultracross codend with innovative devices reducing the water flow speed (with two tarpaulin diffusers and two 120 mm net confusors) significantly reduces the number of undersized cod (<35 cm) even down to 1.2% in the haul.
Adres strony internetowej (link) do pełnego tekstu publikacji: https://ieeexplore.ieee.org/document/10765742
DOI: 10.1109/METROSEA62823.2024.10765742
Tytuł: The Use of a Double Bottom Trawl Set to Assess the Selectivity of Innovative Codends in Baltic Cod (Gadus morhua) Fishing
Autor/Autorzy: P.Zalewski, P.Nowakowski, K.Berest, G.Krzemień, J.Artyszuk, A.Żuliński, M.Kasprowicz
Miejsce publikacji: Applied Sciences-Basel, Tom 14 Zeszyt 3, Nr str. 1131, Data wydania: 01/2024
Rok: 2024
Słowa kluczowe: Baltic fishery, selective fishing, bottom trawl design, ultracross codend, diffuser
Abstrakt: The overall objective of the study presented in this paper was to evaluate the selectivity properties of three innovative codends in Baltic cod fishing: (1) an ultracross codend of 120 mm square mesh, (2) an ultracross codend with additional devices reducing the speed of water flow—one tarpaulin diffuser and one net confusor of 120 mm mesh, and (3) an ultracross codend with two tarpaulin diffusers and two net confusors of 120 mm mesh. These codends were firstly tested at sea by single trawls and compared to T90 and herring codend trawls, allowing assessment of caught fish mass and dimensions. Additionally, a special divided small-mesh coat for the innovative codends enabled determination of the amount as well as the length and mass of cod escaping from the codend both while the trawling gear was towed and while it was hauled. Further validation of codend selectivity was carried out by a double (twin) bottom trawl set deployed from one cutter in various variants of innovative codends compared to standard ones. The results of the study indicate that the use of an innovative ultracross codend and innovative devices reducing the water flow speed (tarpaulin diffusers and 120 mm net confusors) significantly reduces the number of undersized cod (<35 cm), even down to 1.3%, in the haul and contributes to a reduction in invisible mortal discard.
Adres strony internetowej (link) do pełnego tekstu publikacji: https://www.mdpi.com/2076-3417/14/3/1131