Seagrass, sediment and infauna - a comparison of Posidonia australis, Posidonia sinuosa and Amphibolis antarctica, Princess Royal Harbour, South-Western Australia I. Seagrass biomass, productivity and contribution to sediments

The above- and below-ground biomass of three seagrass species, Posidonia australis, Posidonia sinuosa and Amphibolis antarctica, were measured within Princess Royal Harbour. Three sites were used of varying water movement and eutrophication. Sediment samples (to measure grain size and composition) were taken from below seagasses and from adjacent non-vegetated areas for comparsion and productivity measurements were carried out in situ.

在公主皇家港（Princess Royal Harbour）内，对澳大利亚海神草（Posidonia australis）、弯曲波喜荡草（Posidonia sinuosa）和南极两栖藻（Amphibolis antarctica）三种海草物种的地上及地下生物量进行了测定。选择了三个具有不同水流运动和富营养化程度的采样点。沉积物样本（用于测定粒度和组成）采集自海草下方及邻近无植被区域以作对比，且生产力测定在原位进行。