Changes in the composition and abundance of ichthyoplankton along environmental gradients of the southern Baltic Sea

• Autorzy: Dembek Małgorzata , Bielecka Luiza , Margoński Piotr , Wodzinowski Tycjan

Identyfikatory

DOI

10.2478/ohs-2019-0030

• Języki publikacji: EN

Abstrakty

EN

The research focuses mainly on the ichthyoplankton of the Baltic deeps – the inflow route from the North Sea. The ichthyoplankton was represented by eggs and larvae of nine fish species: sprat, cod, herring, European flounder, fourbeard rockling, longspined bullhead, straightnose pipefish, sand goby and great sandeel. The species composition of ichthyoplankton varied depending on the location of a given site – the number of taxa ranged from one to five. The Slupsk Furrow was the most diversified area in terms of the number of taxa, while the highest abundance of ichthyoplankton occurred in the Bornholm Basin. The sprat clearly dominated and inhabited all the surveyed depths. Of the remaining species, only cod eggs as well as eggs and larvae of the fourbeard rockling significantly contributed to this formation. They occurred within their main spawning grounds (Bornholm Deep in the near-bottom layers) and secondary spawning grounds (Slupsk Furrow and Gdansk Deep) where salinity and oxygenation of water favored their development. Biometric research has shown that the diameter of eggs was within the size range typical of the Baltic Sea.

Słowa kluczowe

EN

ichthyoplankton; deeps; Baltic Sea; fish eggs

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2019
• Tom: Vol. 48, No. 4
• Strony: 328==336
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Dembek Małgorzata

• National Marine Fisheries Research Institute, Department of Fisheries Oceanography and Marine Ecology, ul. Kołłątaja 1, 81-332 Gdynia, Poland

autor

Bielecka Luiza

• University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Department of Marine Ecosystems Functioning, Al. M. Piłsudskiego 46, 81-378 Gdynia, Poland

autor

Margoński Piotr

• National Marine Fisheries Research Institute, Department of Fisheries Oceanography and Marine Ecology, ul. Kołłątaja 1, 81-332 Gdynia, Poland

autor

Wodzinowski Tycjan

• National Marine Fisheries Research Institute, Department of Fisheries Oceanography and Marine Ecology, ul. Kołłątaja 1, 81-332 Gdynia, Poland

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).