Journal of The School of Marine Science and Technology,Vol.1 No.2
Vegetation of Benthic Marine Algae in Suruga Bay, Central Japan
Yoshitaka KONISHI and Fumio HAYASHIDA
Abstract
The number of species and population structure of benthic marine algal communities in Suruga Bay on the Pacific coast
of central Japan were surveyed from April through December in 1986〜2001at the intertidal zone and also at the range of
about three meters below the low water mark. A total of 249species, including 42species of Chlorophyta, 56 species of
Phaeophyta,and 151species of Rhodophyta were identified from 17stations surveyed.The species abundance was notably
higher along the east coast of this bay compared with west coast . In the period of high growth (April-June), dominant
species at the lowest part of the intertidal zone was Sargassum fusiforme, which is commonly found along the west coast
of Izu Peninsula. The highest value of the standing crop was about 12.3kg fresh wt./m2 at Nakagi on the southern end of
Izu Peninsula.Among the five stations in Suruga Bay,the highest coeffecient of closeness of floristic composition was 55％
between Omaezaki and Mochimune, and the lowest was 32％ between Omaezaki and Toi. These results indicate that the
environmental conditions in Suruga Bay are rather different between east and west region of the bay.