This study investigates the relationship between the vertical flux of particulate organic matter (POM) and the biomass of living benthic foraminifera in a region at the continental slope of the Campos Basin (between 400 and 3000 m). Vertical POM fluxes to the seafloor were modeled as a function of remote sensing chlorophyll-a concentration, sea surface temperature, and derived products such as primary production rates and estimates of dominant phytoplankton size. Measurements of biovolume predicted the biomass of benthic foraminifera. The mean calculated vertical POM fluxes (24.2 ± 17.3 mgCm⁻².day⁻¹) were consistent with observations from other oligotrophic environments and correlated positively with the total organic carbon (TOC) content in the sediments. The total biomass of benthic foraminifera, and the biomasses of 14 individual foraminifera species also showed significant correlations with the estimated vertical POM fluxes. The spatial distribution of these fluxes, sediment carbon, and foraminifera biomass in Campos Basin depicted the expected decrease with local depth but our data suggested that the foraminifera communities were influenced by mesoscale eddies associated with the Brazil Current System.

本研究调查了坎波斯盆地大陆坡区域（400 至 3000 m）颗粒有机物 (POM) 垂直通量与底栖有孔虫生物量之间的关系。到海底的垂直 POM 通量被建模为遥感叶绿素 a 浓度、海面温度和衍生产品（如初级生产力和主要浮游植物大小的估计）的函数。生物量的测量预测了底栖有孔虫的生物量。平均计算的垂直 POM 通量 (24.2 ± 17.3 mgCm ^-2 .day ^-1) 与其他贫营养环境的观察结果一致，并与沉积物中的总有机碳 (TOC) 含量呈正相关。底栖有孔虫的总生物量和 14 个个体有孔虫物种的生物量也与估计的垂直 POM 通量显着相关。Campos 盆地这些通量、沉积物碳和有孔虫生物量的空间分布描述了随局部深度的预期下降，但我们的数据表明有孔虫群落受到与巴西洋流系统相关的中尺度涡旋的影响。