Mercury content in fish caught in the Northern Dvina below a pulp and paper mill
Subarctic Russian rivers tend to have swampy watersheds with a high content of hydrogen ions and humic substances. These conditions are favourable for the formation of bioavailable mercury. Thus, even background mercury concentrations can pose a danger to aquatic organisms....
The spawning migration of smelt (Osmerus eperlanus eperlanus L.) in the rivers of the Curonian lagoon basin
This article analyses the features of spawning migration of smelt in the rivers Neman and Matrosovka as a background for fishery regulation. The authors identify the period and extend of spawning migration in the rivers in 2011, the dynamics of catches per unit effort, and species composition of commercial catches. The calculation ...
