西表島マングローブ域のベントス群集(予報)
1988 年 1988 巻 33-34 号 p. 91-94
詳細
1988 年 1988 巻 33-34 号 p. 91-94
OMORI KOJI, (Department of Biology, Faculty of Science, Ehime University). 1988. Preliminary report on the benthic communities in the mangrove area of Iriomote Island, Okinawa. Benthos Research (Bull. Jap. Assoc. Benthology) 33/34, 91-94. Community composition of macrobenthos and some environmental variables of bottom substrate were investigated in two mangrove areas of Iriomote Island, Okinawa, and the relationships between them were analyzed by the canonical correlation analysis method. The most important canonical correlation coefficient of environmental variables was concerned with particle size of organic detritus derived from mangrove litters, and the stations of two study areas were discriminated by the coefficient. One locality was characterized by coarse detritus fraction and the other was characterized by the finer fractions. Considerable number of macroherbivores directly consume mangrove leaves occurred only in the latter locality. The composition of benthic fauna, consumption and decomposition process of mangrove derived organic matter seemed to be different by locality, mainly influenced by topography and other habitat conditions.
