The Response Of Young Cod (Gadus Morhua) To Environmental Gradients ...

• Main Authors: Waller, Uwe, Boettger, Thorolf
• Format: Conference Object
• Language: unknown
• Published: ASC 2001 - V - Theme session 2024
• Subjects: Fisheries and aquaculture; ICES resources; Gadus morhua
• Online Access: https://dx.doi.org/10.17895/ices.pub.25636263.v1; https://ices-library.figshare.com/articles/conference_contribution/The_Response_Of_Young_Cod_Gadus_Morhua_To_Environmental_Gradients/25636263/1

No abstracts are to be cited without prior reference to the author.The ability of fish to select an optimal habitat allow to respond to inappropriate environmental factors and in doing so to improve the physiological conditions. Fish react to almost every conceivable environmental factor. Environmental temperature, dissolved oxygen concentration, and salinity are significant, because they directly determine metabolic scope in fish and develop strong gradients in the seas. In the shallow waters of the Baltic Sea strong lack of oxygen exists in areas where young cod (Gadus morhua) grow. Especially in the areas of the Belt Sea and the Kiel Bay, the water temperatures as well as salinity contents drastically fluctuate within a couple of hours (Gerlach & Kortum 1992); oxygen deficit is a phenomenon that has always been observed (Ruppin 1912; Gerlach 1984, 1988; Ruhmohr 1986; Babenerd & Meyerhöfer 1988) Continuous recordings of temperature, dissolved oxygen concentrations, and salinity in Kiel Bay show a ...