The article is the second part in a seria, devoted to figure out parameters of Pacific salmon escapement for spawning to the rivers of Kamchatka regiоn. In the first article we provided analysis for the rivers within the Petropavlovsk-Commander fisheries subzone in the south-east part of Kamchatka peninsula (Feldman et al., 2016). In this article we suggest parameters for Pacific salmon spawning escapement for the rivers of Karaginsky and Olyutorsky Gulfs, embracing the north-east part of the peninsula (the Karaginskaya fishery subzone). Similar article will be provided concerning the rivers of the west coast of Kamchatka. It is important to know the escapement to manage fisheries resource and work out logistics of fishery management. In mentioned seria we for the first time evaluated landmarks for spawning escapement for most part of Pacific salmon stocks of Kamchatka region. Models of the type stock-recruitment (reproduction curves) are used in the method for setting the fisheries landmarks. The method is based on obtaining data about stock and recruitment from general model for each certain species of Pacific salmon in a certain part of Kamchatka region with later splitting them into individual models for specific populations.

Literature data on the occurence of larvae and alevins of Pacific cod in the eastern part of teh Sea of Okhotsk are absent. It is known, that larvae of cod stay in vicinity of spawning grounds during a period after emergence (Mishima, 1984). Later distribution of the larvae depends on water currents. In this article we rpovide analysis of data, obtained during ichthyoplankton surveys in June of 2015 on the shelf of Western Kamchatka. The purpose was to make generalization for all data about the catches of larval cod on the west coast of Kamchatka, including modern data and results of morphometric analyzing. Larval cod was observed in the catches within limited area between 51º07‫ ׳‬N 156º30‫ ׳‬E and 53º28‫ ׳‬N 155º43‫ ׳‬E in the depth layer 20-86 meters where the temperature near the bottom was from 0.9 to 4.3 ºС and surface temperature - from 3.8 to 8.2 ºС. In June of 2015 the direction of the drifting, averaged within studied area, was to east-southeast sector. These conditions could additionally help moving the larvae of cod in direction of the coast from more to less depth. Most square of the larval body was covered by pigmented spots (subcutaneus cells of brown color). Middle lateral pigmented stripe begins from a vertical behind anus. Big melanofors are situated on the head, lower jaw and frontal part of ventral area. The total body length (TL) of the larvae varied from 7.77 to 12.65 mm, the head length until posterior edge of gill cover (HL) - from 1.39 to 3.19 mm. The eyes are big and take averaged about 38% of the head length or 8.2% of the total body length of larva.

The paper represents analysis of the data about the north shrimp Pandalus eous Makarov, 1935 (Decapoda, Caridae), obtained during bottom trawl surveys near the coast of West Kamchatka in summer of 2017. Maps of distribution and assessment of biological condition of the shrimp are made based on the data and data from literature. It is revealed that in summer period the north shrimp form dense aggregations in the southeastern part of the Sea of Okhotsk along the 200 m deep horizon. An aggregation of small-sized shrimps was found in vicinity of the cape Lopatka. Three plots of the highest density were subdivided in the area examined (between 53° and 54° N): the plot where the north shrimp demonstrate desseminated character of distribution (southward from 53° N) and the most southern plot (between 51° and 52° N), where the number of juvenile and male individuals was the highest. The size composition of shrimps at mentioned plots was different. Aside from analysis of the biological indices there was also provided analysis of fishery campaign 2017 in winter and spring. Position of ships depending on the time of fishing and final production made of shrimp harvested was analyzed.

Characterization of the temperature and ice conditions and level regime of Azabachye Lake is made based on the hydrological researches carried out on this sockeye salmon spawning and nursery water body in 1981-2017. It was found, that the hydrological regime of the flow-through, dimictic Azabachye Lake is predetermined by morphological and morphometric specifics, geographical position and climate conditions within mentioned lake basin. An important role in the water regime of the lake in winter months is played by the degree of cooling the aquatic masses in the course of freezing-up the lake and the flow of warmth into the hypolimnion from bottom deposits of silt. The height of the peaks of flood is determined by the amount of precipitation within the catchment area from November of previous year to April of current year. The temperature of the water in the pelagic zone of the lake at intense development of hydrobionts (June-November) depends on the air temperature in the basin of the lake in summer and autumn months.

Analysis of the molecular-genetic study using old laminarialean samples collected from Russian Far East and stored in herbarium collections from 6 to 44 years is reported. To isolate algal DNA, we used two reagent kits: Invisorb Spin Plant Mini Kit (Invitek, Berlin-Buch, Germany) and Plant DNA Mini Kit (WizPrep™, Republic of Korea), and CTAB detergent (Cetyltrimethyl ammonium bromide). Rubisco, rDNA (including ITS1 and ITS2) and COI were used as DNA markers. As our data showed, after 26 years of storage of the herbarium specimens, DNA can no longer be isolated. Even in samples <26 years old, DNA can be significantly damaged, which allows to amplify only partial ITS1 and ITS2, but not Rubisco and COI. Based on comparison of genotypic and phenotypic systematics of laminarialean algae, we suggested that overreliance on genetic methods is not completely justified and approaches to describe new taxa need to be reconsidered, especially if it is impossible to collect fresh samples for the DNA extraction, and DNA is competely degraded in the material under study.

Species composition and spatial distribution of zooplankton in the Far Eastern Marine Reserve (FEMR) in June-September 2012 was studied. Eight taxonomic groups were found, and Copepoda (21 species) and Cladocera (5 species) dominated. The highest abundance of Cladocera, Chaetognatha, Appendicularia, Mysida и Pteropoda was recorded in the western shallow-water part of the FEMR due to cyclonic circulation of the water masses in case of wind from the South. Presence of aggregated tropical and subtropical species in the eastern deepwater part was observed in summer due to cold deep Primorskoye Current and warm surface plume of the East-Korean Current. In 2012 the number of subtropical and tropical species in the reserve decreased, and the decrease is possibly an effect of climate changes in the northwestern part of the Sea of Japan.