Litteratur: Østersøen
(Naturen i Danmark)
Ambio 18: 326-332. Hagerman, L. 1998. Physiological flexibility; a necessity for life in anoxic and sulphidic habitats. – Hydrobiologia 375/376: 241-254. Jansson, B. O. 1978. The Baltic – a systems analysis of a semienclosed sea. – Advances in Oceanography 131-183. Kautsky