The Effects of Animal-Sediment Interactions on Geochemical Processes near the Sediment-Water Interface

纽约州立大学石溪分校的两位研究人员将继续研究底栖动物对成岩反应速率、沉积物-水溶质交换和沉积矿床中有机/矿物相储存的影响。 为了实现这些目标，PI将集中他们的研究沿着以下三个，相互关联的实验工作：（1）灌溉，扩散结构和耦合缺氧反应的最佳缩放;（2）洞穴衬里和粘液分泌物在沉积物中的扩散渗透性;和（3）在生物扰动区的多维溶质分布。 该科学家团队还计划在其放射性pH/O2传感器中添加CO2和特定的胞外酶传感器，并使用这些平面传感器技术在REMOTS着陆器系统上进行原位测量。 这项研究的长期目标将是一个模型，概述了在早期成岩过程中发生在生物扰动带和相应的元素循环和生态意义的探索的运输和反应平衡的类型。

ABSTRACTOCE-0117062Two researcher from the State University of New York-Stony Brook will continue their research into the effects that bottom-dwelling animals have on the rates of diagenetic reactions, sediment-water solute exchange and storage of organic/mineral phases in sedimentary deposits. To achieve these objectives, the PIs will focus their research along the following three, interrelated experimental efforts: (1) irrigation, diffusion structure and optimal scaling of coupled oxic-anoxic reactions; (2) diffusive permeability of burrow linings and mucoid secretions in sediments; and (3) multi-dimensional solute distributions in the bioturbated zone. This team of scientists also plans to add CO2 and specific exoenzyme sensors to their radiometric pH/O2 sensor and use these planar sensor techniques for in-situ measurements on the REMOTS lander system. The long term goals of this research will be a model that outlines the types of transport and reaction balances occurring during early diagenesis in the bioturbated zone and an exploration of the corresponding elemental cycling and ecological implications.