The basic laws of number of muksun dynamics Coregonus muksun the Ob River
2006
Matkovsky, A.K.
The natural changes of the number muksun on the Ob River are studied for the period 1969-2004 and the factors that cause are also analyzed. The various periods of fishery on a degree of using muksun stocks are analyzed, the estimation of a modern condition of stocks is given. A 12 years cycle in appearing of numerous generations of muksun is revealed. It is established, that the number of generations muksun appreciably depends on the quantity of the breeding fish and the number of the factors connected with a level water of year. The basic influencing factor on a population is fishery. The essential decrease of the trade number of muksun is marked last decade. The negative influence of illegal catch and the necessity of realization of measures on restoration of muksun stocks are emphasiz
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Russian Federal Research Institute of Fisheries and Oceanography
Découvrez la collection de ce fournisseur de données dans AGRIS