MEPS 425:297-301 (2011)  -  DOI: https://doi.org/10.3354/meps09098

AS WE SEE IT
The beauty of simplicity in science: Baltic cod stock improves rapidly in a ‘cod hostile’ ecosystem state

Massimiliano Cardinale1,*, Henrik Svedäng2

1Institute of Marine Research, National Board of Fisheries, PO Box 4, 45321 Lysekil, Sweden
2Swedish Institute for the Marine Environment, PO Box 260, 40530 Göteborg, Sweden

ABSTRACT: The Baltic Sea ecosystem is hypothesized to have undergone a regime shift during the last 3 decades, altering its functioning and the composition of its zooplankton and fish communities. The new stable state has been considered as 'cod hostile' due to reduced spawning success in cod, as well as increased predation on and declining food sources for cod larvae. Nonetheless, the eastern Baltic cod stock has recently recovered after more than 2 decades of low biomass and productivity. The recovery was mainly driven by a sudden reduction in fishing mortality and occurred in the absence of any exceptionally large year classes. The recovery of the cod stock during a 'cod-hostile' ecological regime indicates that fisheries are the main regulator of cod population dynamics in the Baltic Sea. 


KEY WORDS: Baltic Sea ecosystem · Regime shift · Climate change · Gadus morhua


Full text in pdf format  
Cite this article as: Cardinale M, Svedäng H (2011) The beauty of simplicity in science: Baltic cod stock improves rapidly in a ‘cod hostile’ ecosystem state. Mar Ecol Prog Ser 425:297-301. https://doi.org/10.3354/meps09098

Export citation
Mail this link - Contents Mailing Lists - RSS
- -