Departmental Bulletin Paper 伊豆諸島三宅島沿岸の海藻相
A floristic study of seaweeds in Miyake Island, the Izu Islands, Japan

高橋, 明寛  ,  鈴木, 秀和  ,  田中, 次郎  ,  松岡, 孝典

Description
The seaweed flora of Miyake Island was examined at monthly intervals for a year (2012-13). 179 species were recorded; of these 21 are newly recorded for the Izu Islands. The newly recorded species include Chaetomorpha basiretrorsa, Chaetomorpha linum, Valonia aegagropila, Codium capitulatum, Acinetospora crinita, Sphacelaria rigidula, Sargassum alternato-pinnatum, Turbinaria ornata, Titanoderma canescens, Hydrolithon sargassi, Gelidium vagum, Hypnea spinella, Sebdenia yamadae, Ceramium codii, Gayliella flaccida, Dasya scoparia, Dasya villosa, Laurencia japonensis, Laurencia majuscula, Laurencia mariannensis and Tolypiocladia glomerulata. The abundant taxa are articulated coralline algae and Gelidium spp. red algae. Seasonal changes and horizontal distribution of the seaweeds of Miyake Island, are discussed.
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