A Long Deployment Benthic Chamber Sampler to "Piggyback" on a Bottom Transecting Free Vehicle

9404077 SHAW深层沉积物群落颗粒通量的时间变化驱动底栖生物呼吸和颗粒结合营养物质和微量元素沉积的变化。通过对沉积物捕集器进行排序，可以在近乎连续的基础上测量颗粒通量。然而，在深海中，颗粒分解和由此产生的溶解物种底栖生物通量仅在季节性的短时间内进行了测量。为了满足更频繁测量的需要，正在建造一个底部横断面自由车辆“漫游者”，以收集底栖生物群落氧气利用的近乎连续的数据。对营养物和微量元素的底栖通量的补充测量将阐明颗粒结合物种的生产力与埋藏之间的关系。该项目包括建造一个长开发采样器来收集和保存底栖生物室采样器，该采样器将“搭载”“漫游者”。采样器将由控制器和一系列注射器架组成。每个机架将有收集和保存18室样品一式两份的能力。控制器将具有从八个机架收集数据的能力。该项目将建造四个架子，在六个月的部署期间，每个架子可以收集六个底栖生物室的十二个位置。这种采样频率将使我们对沉积物水界面营养物质和微量元素的生物地球化学循环的季节性变化有更深入的了解。

9404077 SHAW Temporal variation in the particulate flux to the deep sediment community drives variation in benthic respiration and the deposition of particle bound nutrients and minor elements. Particulate flux can be measured on a near continuous basis with sequencing sediment traps. However, particulate decomposition and the resultant benthic flux of dissolved species has been measured only for brief periods seasonally in the deep ocean. To address the need for more frequent measurements, a bottom transecting free vehicle "Rover" is being built to collect near continuous data on benthic community oxygen utilization. Complimentary measurement of the benthic flux of nutrients and minor elements will elucidate the relationship between productivity and burial for particle bound species. This project involves building a long development sampler to collect and preserve benthic chamber sampler which will "piggyback" the "Rover". The sampler will be made up of the controller and a series of syringe racks. Each rack will have the capability of collecting and preserving 18 chamber samples in duplicate. The controller will have the capacity to collect from eight racks. Four racks will be built for this project allowing six collections each for twelve emplacements of the benthic chamber over a six month deployment. This sampling frequency will allow a greater understanding of the seasonal variability of the biogeochemical cycling of nutrients and trace elements at the sediment water interface.