КамчатНИРО
91
yearsKamchatka Research Institute of Fisheries and Oceanography
years
Journal / Archives
УДК 597.553.2 DOI: 10.15853/2072-8212.2018.50.5-26Download the full article
The status of the pacific salmon stocks in the rivers Nalychevo, Ostrovnaya and Vakhil (South-East Kamchatka) in 1980–2017
Stock abundance dynamics of sockeye salmon, pink salmon, chum salmon and coho salmon for the last 37 years was analyzed in the rivers Nalycheva, Ostrovnaya and Vakhil. Biological characteristics of spawners (including Chinook salmon) were analyzed in Nalycheva River, and a comparison to Ostrovnaya River was made for the first time (on the data about Nalycheva for 2017). Temporal groups were revealed for all salmon species (in exception of Chinook salmon) in the Nalycheva, and biological differences are demonstrated in case of occurence. Spatial and temporal diversity of Pacific salmon in each of the rivers mentioned was evaluated, and it is concluded, that urgent measures are required to protect salmon stocks in the rivers Nalycheva and Ostrovnaya were made.