ISSN 10674136, Russian Journal of Ecology, 2010, Vol. 41, No. 5, pp. 440–444. © Pleiades Publishing, Ltd., 2010.
Original Russian Text © S.M. Dement’eva, T.P. Petushkova, 2010, published in Ekologiya, 2010, No. 5, pp. 393–396.
The water chestnut,
Dumort.) is a Tertiary relict whose fate is a matter of
major concern. This plant is listed in the Red Data
Books of the Soviet Union (
and the Tver Region (
, 2002), where
it has the status of species decreasing in abundance.
The water chestnut grows in slowly flowing or still
water bodies, in wellwarmed areas protected from
wind. Its geographic range extends over the Mediter
ranean, central and eastern Europe, central and
southern Asia, North America, and Australia (Belous
ova et al., 1979). Its range within the boundaries of the
former Soviet Union is disjunctive and includes Euro
pean Russia, the Caucasus, Transcaucasia, Siberia,
Altai, Belarus, Ukraine, and Kazakhstan (Vasil’ev,
1952). Within this vast range, the species is sparse and
occurs sporadically mainly in floodplain lakes,
oxbows, river inlets, etc. with depths of 0.5–2 m
(Vasil’ev, 1960; Lisitsina, 1993).
In the Tver Region, the water chestnut has been
recorded in lakes Vysochert and Savinskoe (Zapadn
odvinskii district); lakes Orekhovno, Borovno,
Pesotno, Ostrovnoe, and Almyshevo, the Turosna
River valley and its immediate vicinity (Zharkovskii
district) (Sorokin et al., 2004); the Invankovo Reser
voir (Konakovskii district); and in the cooling pond of
the Heat and Power Plant3 in the city of Tver
(Sorokin et al., 2004). In 1984,
in lakes Almyshevo and Pesotno were relatively stable,
the population in Lake Ostrovnoe was at the brink of
extinction, and the population in Lake Borovno was
expanding (Malysheva et al., 1986).
On the Ecology and Distribution of
in Lakes of the Tver Region
S. M. Dement’eva and T. P. Petushkova
Tver State University, pr. Tchaikovskogo 70A, Tver, 170002 Russia
Received September 3, 2009
: hydrophytes, water chestnut, ecology, distribution, specially protected nature objects.
50 50 100 km
distribution in lakes of Zapadnodvinskii District. Tver Region.