Biological foundation of rational salmon fishing in Sakhalin-Kuril region
The author describes the history of formation and present functioning of monitoring of hunchback and chum salmon stocks in Sakhalin Island and the Southern Kuril Islands. Every year the data are being obtained on salmon spawning run dynamics and the fish biological characteristics (with use of fixed nets in the coastal waters, sweep nets in river mouths), fishing statistics, survey of producers entering rivers (fish registration in control rivers, statistics of young fish output from salmon fish plants). The data gathered are being used for one-year prognoses calculation and for on-line recommendations on fisheries management.