ISSN 1063-0740, Russian Journal of Marine Biology, 2009, Vol. 35, No. 1, pp. 1–7. © Pleiades Publishing, Ltd., 2009.
Original Russian Text © V. Skriptsova, Yu.V. Nabivailo, 2009, published in Biologiya Morya.
(Kanni et Matsubara) Mak-
ienko is the main source of raw material for agar pro-
duction in Russia. This unattached red alga develops its
abundant commercially used beds in the Bay of Izmena
(Kunashir Island), in Busse Lagoon (Sakhalin Island),
and in Peter the Great Bay (Stark Strait, Baklan and
Perevoznaya bights) [4–6, 12].
beds lying 5 to
20 m deep represent a particular biocoenotic commu-
nity that includes dozens of macrophyte species and has
a complicated structure. Biomass of
50 to 95% of the total algal biomass in the communi-
ties. It is of great interest to study algal species accom-
, mostly, for estimation of phytocon-
tamination of commercial ﬁelds of this valuable alga.
To begin with, the study shall deal with the spatial
structure of the algal bed, with distribution and relation-
ship of algal species involved. Earlier similar surveys
were conducted in Stark Strait by Titlyanova  and
in the Bay of Izmena and Stark Strait by Ivanova with
coworkers . These studies did not reveal any regular-
ity in distribution of attendant species across the bed
thickness, and, as the authors believe, this is due to peri-
odical turning of the algal growth bed.
Species composition and distribution (horizontal
and vertical) of macrophytes within the
the vicinity of Mt. Stolovaya was not studied before.
The structure of unattached algal bed is known to result
The article was translated by the authors.
from hydrological, hydrochemical, and illumination
regimens in the algal habitat. Earlier studies [3, 9] doc-
umented only effects of the structure and intensity of
water exchange upon the bed conﬁguration and distri-
bution of attendant species of hydrobionts. Dependence
of these characteristics upon light intensity and nutrient
concentrations has not been studied before.
The aim of this work is to estimate the
resources; to study species composition and distribu-
tion of attendant species in the beds of
in Amursky Bay in the area of Mt. Stolovaya; and to
determine the effect of PAR reaching the bed surface
and that of mineral nutritive substances in distribution
of algae within the bed strata.
MATHERIAL AND METHODS
We studied the algal distribution and determined the
algal biomass of the
Amursky Bay of the Sea of Japan in the area of
Mt. Stolovaya (from the mouth of Barabashevka river
and up to Peschani Peninsula, from 43
E) from July to September 2005.
Samplings were made using SCUBA within the net of
147 sampling stations. The distance among stations
was about two cables (382 m). The positioning of the
vessel toward a station was provided by GPS. At every
station, the bed thickness was measured and the pro-
jecting cover of the bottom with algae was determined.
Spatial Distribution of Algae in the
in Amursky Bay (Sea of Japan)
V. Skriptsova and Yu. V. Nabivailo
Institute of Marine Biology, Far East Division, Russian Academy of Sciences, Vladivostok, 690041 Russia
Received September 13, 2007
—Horizontal and vertical distribution of algae in
beds was studied in the area
of Mt. Stolovaya in Amursky Bay, Sea of Japan. Thirty-four species of macroalgae (2 species of Chlorophyta,
26 Rhodophyta, and 6 Ochrophyta) were found in the area of study. Two ﬁelds of the unattached alga
were located opposite Mt. Stolovaya; they differed in area, macrophyte stock, number and biomass of attendant
species, hydrochemical and light conditions. A monodominant
community formed in the
southern ﬁeld and a bidominant community of
in the northern ﬁeld. It is suggested that the horizontal distribution of common macrophyte species in the
beds at Mt. Stolovaya is conditioned by the amount of photosynthetically active radiation (PAR) reaching
the surface of the algal bed. Differences in tolerance of
and attendant species to shadowing and in
light conditions across the alga stratum deﬁne the vertical distribution of algae within the bed.
were found mainly in the upper layer of the algal bed.
extended across the entire thickness of the bed.
, attendant species, horizontal and vertical distribution.