Sandimirov S.S. Catalogue of lakes in the Russian, Finnish and Norwegian Border Area. Finland, Jyvaskyla: Kopijyva Oy, 2008.

Cu in liver Ni in kidneys Fig. 18. Accumulation ofCu (liver), Ni (kidneys), Pb and Hg (muscle) in fish from Lake Kochejaur (цд/д dry weight). perch pike perch pike whitefish whitefish Pb in muscle s&■ perch pike whitefish Hg in muscle perch pike whitefish 1.17. LAKE VIRTUOVOSHJAUR Lake Virtuovoshjaur (watershed of the River Puldshkash - tributary of theRriver Nautsijoki) is located 2.5 km from the Russian-Finnish border, 91 km to the south­ west of the town ofNikel, and 35 km to the north of the “Lotta”border crossing point. It is a small (area of the lake 1.25 km2), shallow-water (average depth 2-5 m, maximum depth 13 m), complex-shaped lake, close to oval with an indented coastline, and of gla­ cial origin. The maximum length is 1.8 km, and maximum width 1 km. The points of maximum depth (13 m) are located in the northern and southern parts of the lake. In the centre of the lake the maximum depth is shallow - up to 2.5 m. A lake bay, which adjoins the lake through a stony channel in the southern part, has shallow water with a depth of 1-2 m and a length of 1.2 km. The lake belongs to the lake-river system of the River Puldshkash, which originates in the south in Russia and then flows through a system of five lakes into Finland, and then flows back into Lake Puldshekjarvi in Russia. Lake Virtuovoshjaur is linked to Lake Puldshekjarvi by a small stream, which flows out of its northern border. Accord­ ing to the landscape type, the watershed consists of a combination of flat, low-lying depressions of glaciolacustrine flatland, and denudation and denudation-tectonic mas­ sifs with abrupt outcrops of quaternary deposits with a height up to 254 m and, in the south, up to 400.6 m (Konnostunturi fell).The lake shores are high, sometimes abrupt, and covered with pine forest. The south-eastern shores are waterlogged with intrusions 54 Catalogue o f Lakes in the Russian, Finnish and Norwegian BorderArea