PINRO conducted specialized trawl surveys to assess the stock level of northern shrimp in the Barents Sea Svalbard area from 1982 to 2003. Since 2004, the stock has been assessed using the joined Russian-Norwegian ecosystem survey. During this 1982-2013 survey period, shrimp biomass has peaked at approximately 7–8 year intervals which were observed in 1983–84, 1991–92, 1998, 2006, and 2010 (Figure 4.3.36).
Since 1990, the Russian fishery for Icelandic scallop has been conducted near Svatoy Nos in the Barents Sea, and on scallop banks in the White Sea Funnel (Figure 4.3.33). Due to harsh fishing conditions in the Funnel area — related to strong currents and, stiff bottom substrate — most scallops were traditionally fished in the Svyatoy Nos colony area. A sharp decline in condition of the Svyatoy Nos scallop colony — following multi-year fishing activities — lead to termination of the fishery in this area
Ecosystem surveys have shown exceptionally rapid growth of the snow crab – especially in the waters adjacent to the northern island of the Novaya Zemlya archipelago – and the expansion of its range in the north-east direction (Figure 4.3.30).
Introduced species have been identified as major agents of global change and one of the main threats to marine systems because of their direct and indirect impacts on native ecosystems. Their effect on biodiversity, habitat structure, and economically important fisheries is a major source of concern (Dvoretsky and Dvoretsky 2010; Falk-Petersen et al. 2011).