1063-0740/02/2803- $27.00 © 2002
Russian Journal of Marine Biology, Vol. 28, No. 3, 2002, pp. 203–205.
Original Russian Text Copyright © 2002 by Biologiya Morya, Kusakin.
The intertidal communities of northern Sakhalin
Island are still very poorly studied. In 1955, the Far
Eastern Integrated Coastal Expedition of the Institute
of Oceanology (USSR Academy of Sciences) headed
by O.B. Mokievskii, worked in that area; in 1978, the
area was again surveyed by the Hydrobiological Expe-
dition of the Zoological Institute (USSR Academy of
Sciences). However, to date the information has been
published only on the ﬂoral composition and vegetation
and quantitative data are available only for plant com-
ponents of the communities.
Only two pages in  deal with the distribution of
macrophytes in the a tremendous coastal area of north-
eastern Sakhalin, from Delil de la Kroier Cape to Eliza-
vety Cape. The author mentions the following charac-
teristic features of solid grounds in the intertidal zone.
The belt of laminarians is present only at zero depth
level and deeper on; the upper part of the belt is domi-
nated by alarians
The lower intertidal horizon is characterized by
the development of the belts of
and, somewhat above the latter, the belt of
grow in these belts. The medium horizon is character-
ized by the strong development of colonial and epi-
phytic diatom algae. A belt of
distinguished in the upper part of the medium horizon,
while belts of red algae
develop in the upper hori-
zon partially penetrating into supratidal area, at Eliza-
vety Cape and at the southern part of the surveyed area,
respectively. The upper intertidal belt of green ﬁlamen-
, according to V.B. Vozzhin-
skaya, moves into the supratidal area. Rare rockweeds,
the areas protected from surf action of the intertidal
area. V.B. Vozzhinskaya  presents no data about the
vegetation of Sakhalinskii Bay to the west of Elizavety
Cape; although in the list of sampling points presented
in the paper there are Kuegda, Pil’vo, and Moskal’vo
bays and Marii Cape.
L.P. Perestenko  characterizes the vegetation of
the southwestern coast of the Sea of Okhotsk and Shan-
tarskie Islands and mentions that at Elizavety Cape the
develops in the upper subtidal zone and in the
lower horizon of the intertidal zone. In the lower inter-
tidal zone, this phytocenosis transforms into the one of
A phytocenosis of
posed of small tuft-forming algae develops, according
Perestenko, on stony substrate in the medium intertidal
In August 1995, I visited the intertidal zone of Sev-
ernyi Bay, together with the Russian-Japanese joint
expedition (headed by D.L. Pitruk) aboard RV
“Geolog.” This small bay is located along the eastern
coast of Sakhalinskii Bay and is located between Eliza-
vety and Marii capes (see the Figure); these capes rep-
resent extremities of small mountainous peninsulas.
The areas around the entrances to both capes of Sever-
nyi Bay are dominated by rocky and sometimes steep
sloping coasts with reefs and stones exposing to air at
low tide . The intertidal transect was collected across
a reef with large number of pools, located in the west-
ern coast of Severnyi Bay, approximately 300 m to the
east off Marii Cape. The survey area was a remnant of
a highly eroded rocky reef split into numerous blocks
smoothed by surf and exposed to air during lower tides.
The blocks are isolated from each other by crevices,
mostly connected to the sea and ﬁlled by water even
during the lowest tides.
Intertidal Communities of Severnyi Bay
(Northern Sakhalin Island)
O. G. Kusakin
Institute of Marine Biology, Far East Division, Russian Academy of Sciences, Vladivostok, 690041 Russia
Received September 26, 2001
—The paper describes the composition, structure and vertical distribution of intertidal communities
in Severnyi Bay (the northern extremity of Sakhalin Island).
intertidal communities, Sea of Okhotsk, northern Sakhalin Island.