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Премия рунета 2017

Salmon will be monitored

29 august 2008
As part of WWF Save the Kamchatka Salmon Project staff of Nalychevo Natural Park together with Kamchatka Fisheries Institute inspect salmon spawning sites assessing fish numbers and the state of protection from poaching.

In the latest years numbers of Salmon entering the Kamchatka rivers for spawning decreased significantly in the sites that are near the roads, and the overall spawning migration time has become shorter. According to the opinion of Oleg Zaporozhets, Dr.Sci., the expert from Kamchatka Fisheries and Oceanography Institute, poaching in the river mouths often leads to the situation that almost no salmon reach the spawning sites. Overall numbers at the spawning sites can be as little as 20-30% of the total capacity; this is the main threat to salmon numbers and diversity in the region. In some rivers illegal harvesting can exceed 10 times officially allowed catching quotas

Monitoring allows assessing the overall salmon stock numbers and the dynamics of all Pacific Salmonids migration. Counts of fish that spawned and those that were cleaned by the poachers enables to estimate the scales of poaching and the total damage to fish resources.

In summer expedition groups of Kamchatka Fisheries Institute are working in the field daily from 10 in the morning till 10 at night. Starting from the end of June till the end of October control catching is also carried out with floating nets at the East Kamchatka at the Avacha, Paratunka and Nalychevo rivers. Species composition of sample harvest, their sizes, weights, sex is assessed, and the scale samples are taken for further definition of fish ages in the laboratory. After such measurements all the fish is released back into the wild.

Several surveys at the spawning lake and in the upper reaches of the Nalychevo river already took place with WWF support. However a lot of work still has to be done.