Macrobenthos composition, abundance and biomass in the Arctic Ocean

Macrofauna has been sampled at 30 stations, at water depths of 1018–4478 m, along a transect extending between Northern Svalbard and the Makarov Basin, as a basis for understanding aspects of the benthic ecology of the Arctic Ocean. Species numbers, abundances and biomasses were extremely low, and generally varied between 0 to 11/0.02 m**2, 0 to 850 individuals/m**2, and 0 to 82.65 g/m**2, respectively. A total of 42 species was found. The Amphipod Jassa marmorata was the most common species. Both numbers and biomasses of suspension-feeding species increased towards the Lomonosov Ridge, probably due to lateral transport of organic material by deep currents along the ridge.

大型底栖动物（Macrofauna）沿一条连接斯瓦尔巴德北部与马卡罗夫海盆的断面，在30个站位开展了采样工作，采样水深范围为1018~4478米，本研究旨在解析北冰洋底栖生态学的相关特征。本次调查中，物种丰富度、个体丰度与生物量均极低，其取值范围分别为0~11个/0.02平方米、0~850个/平方米、0~82.65克/平方米。共记录到42个物种，其中端足类（Amphipod）玛莫尔蜕钩虾（Jassa marmorata）为最常见物种。悬浮摄食类物种的丰度与生物量均随采样站位向罗蒙诺索夫海岭方向逐渐升高，该现象可能由沿海岭流动的深层洋流侧向输运有机物质所导致。