ISSN 10674136, Russian Journal of Ecology, 2010, Vol. 41, No. 5, pp. 412–417. © Pleiades Publishing, Ltd., 2010.
Original Russian Text © V.D. Bogdanov, I.P. Mel’nichenko, 2010, published in Ekologiya, 2010, No. 5, pp. 372–377.
The boundary between the European and Asian
ichthyofaunas in the Arctic is usually considered to
coincide with the Kara River basin, but this has not
been confirmed by special studies. The species diver
sity of fishes in continental water bodies along the Arc
tic coast of Baidaratskaya Bay and the northern Polar
Urals has not been analyzed in detail. Some relevant
data can only be found in publications dealing in some
way with natural conditions in this area or with various
ichthyological problems addressed by studying fishes
of particular rivers and lakes (
Bogdanov et al., 2000; Ponomarev and Loskutova,
2007). Thus, the purpose of
this study was to analyze the distribution of fishes in
water bodies and water courses of the northern Polar
Urals and the adjacent part of Baidaratskaya Bay coast
and to specify the range boundaries of the European
and Siberian ichthyofaunas in the freshwater part of
MATERIAL AND METHODS
The material was collected in 1998 to 2005. The fol
lowing lakes were studied: Ingilor, Bol’shoe Syadatato,
and Maloe Syadatato in the Longot”egan River basin;
Bol’shoe KhadataYuganLor, Bol’shoe Shchuch’e,
Maloe Shchuch’e, and Boito in the Schuchya River
basin; a nameless lake at the mouth of the Malyko
River; Pederato, Sidyato, and two nameless lakes pro
visionally designated “Bol’shoe” (Great) and “Dlin
noe” (Long) in the Baidaratayakha River basin; Man
yaseito and Peto in the Manyaseiyakha River basin;
Khasuito and Tambto in the Ngoyuyakha River basin;
Ngosaveito in the Ngosaveiyakha River basin; and
Nyarmato, Tasynenzato, and Lyadkheito in the
Nyarmayakha River basin. These lakes differ in origin,
position in the landscape, size, and some other param
eters. At present, they are not exposed to the impact of
economic activities, except for traditional form of
fishing by local residents and reindeer breeders.
Adult fishes were captured using fixed nets with
mesh size of 12 to 70 mm. Biological analysis was per
formed with fresh material by conventional methods
(Pravdin, 1966; Chugunova, 1959). A total of 3719 fish
specimens were examined. Similarity between water
bodies with respect to the species diversity of fishes was
estimated using Sørensen’s (1948) index of similarity
) calculated by the formula
is the number of species common to both
water bodies, and
are the numbers of species in
each of them.
This similarity index was calculated for all pairwise
combinations of the lakes studied, and the results were
compiled in a matrix. On this basis, dendrograms were
plotted using the methods of cluster analysis and mul
tidimensional scaling (Jain, 1999; Hastie, 2001).
All calculations were made with the programs Excel
and Statistica 5.0.
RESULTS AND DISCUSSION
The results of this study show that fresh waters of
the northern slope of the Polar Urals are inhabited by
35 species of fishes and cyclostomes, including 29
The Boundary between European and Asian Freshwater
Ichthyofaunas in the Arctic Part of the Polar Urals
V. D. Bogdanov and I. P. Mel’nichenko
Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences
ul. Vos’mogo Marta 202, Yekaterinburg, 620144 Russia
Received February 19, 2010
—The spatial distribution of ichthyofauna in water bodies of the northern Polar Urals is reviewed.
Four lake types are distinguished according to the species composition of fishes. The faunistic ranking of
water bodies has been performed. The zoogeographic boundary between the ranges of the European and
Siberian ichthyofaunas in the freshwater part of the Arctic has been determined.
: fish fauna, species composition, lake types, distribution boundary.