High-temporal-resolution views of particle flux to the abyssal benthic boundary layer are provided for an eight-month period (October 2014–June 2015) at the long-term monitoring site Station M within the California Current ecosystem. Contributions of fecal pellets and aggregates to particulate organic carbon (POC) flux at 3900 m depth were estimated based on optical sediment trap (Sedimentation Event Sensor) images captured as a time-series of 2 h collections. POC flux estimated from Sedimentation Event Sensor (SES) images explained variation in carbon consumption and the carbon budget balance (supply – demand) with finer resolution than POC flux measurements from bulk collections by a concurrently deployed conventional sediment trap. Indicators of particle transport by benthic boundary layer currents and active transport by zooplankton were evaluated by comparing SES-estimated POC flux to measured current speed and direction, hours since solar noon, and modeled lunar illumination at the surface. Influence of particles (fecal pellets and aggregates) on the carbon budget was evaluated by comparing particle-specific contributions to POC flux with sediment community oxygen consumption (SCOC) measured by the Benthic Rover at 4000 m depth. During the eight-month sampling period, salp fecal pellets delivered an estimated 45% of the total POC flux to the benthic boundary layer and were responsible for an estimated 74% of a temporary carbon surplus in May and June 2015. Salp fecal pellets also appeared to be the primary source of chlorophyll peaks at the site. By contrast, most aggregates appeared to be lower-quality particles possibly sourced from lateral advection and local rebound of recently-settled detritus, which settled according to spring-neap tidal oscillations. Some aggregates may have been fresher, as suggested by non-linear relationships with SCOC and the carbon budget balance. Results suggest sinking particles packaged in surface waters and reaching abyssal depths in fresh condition (e.g. salp fecal pellets) had a greater influence on carbon consumption (e.g. SCOC) and the carbon budget balance than more refractory particles.

在八个月的时间内（2014年10月至2015年6月），在“加利福尼亚州当前生态系统”的长期监测站“ M”处提供了到深海底栖边界层的粒子通量的高温高分辨率视图。根据以2 h的时间序列采集的光学沉积物陷阱（沉降事件传感器）图像估算了3900 m深度粪便颗粒和聚集体对颗粒有机碳（POC）通量的贡献。通过沉积事件传感器（SES）图像估算的POC通量比采用同时部署的常规沉积物捕集器从大宗收集中获得的POC通量测量结果更高分辨率，从而解释了碳消耗量变化和碳预算平衡（供需）。通过比较SES估计的POC通量与测得的电流速度和方向，自太阳正午以来的小时数以及对表面月球照明的建模，评估了由底栖边界层电流进行的粒子迁移和由浮游动物进行的主动迁移的指标。通过比较颗粒对POC通量的特定贡献与通过4000 m深度的Benthic Rover测量的沉积物群落耗氧量（SCOC），评估了颗粒（粪便颗粒和聚集体）对碳收支的影响。在8个月的采样期内，粪便​​粪便颗粒物向底栖边界层输送了估计总POC通量的45％，并在2015年5月和6月造成了暂时性碳过量的74％。是该部位叶绿素峰的主要来源。相比之下，大多数聚集体似乎是质量较低的颗粒，可能是由于最近沉降的碎屑的横向对流和局部回弹所致，这些碎屑根据春季的潮汐振荡而沉降。与SCOC的非线性关系和碳预算平衡表明，某些总量可能更新鲜。结果表明，沉陷于地表水中的颗粒和在新鲜条件下到达深渊的深度（例如粪便粪便颗粒）比更多的难熔颗粒对碳消耗（例如SCOC）和碳收支平衡的影响更大。与SCOC和碳预算平衡之间存在非线性关系。结果表明，沉陷于地表水中的颗粒和在新鲜条件下到达深渊的深度（例如粪便粪便颗粒）比更多的难熔颗粒对碳消耗（例如SCOC）和碳收支平衡的影响更大。与SCOC和碳预算平衡之间存在非线性关系。结果表明，沉陷于地表水中的颗粒和在新鲜条件下到达深渊的深度（例如粪便粪便颗粒）比更多的难熔颗粒对碳消耗（例如SCOC）和碳收支平衡的影响更大。