Biogeochemistry and Microbiology of Pelagic Sub-seafloor Sediments in the Pacific Ocean

在与国际财团的合作中，我们是IODP提案的支持者，以解决低活性沉积物中的微生物活动和分布（IODP 662-Full）。该项目涉及测定沿年轻E.太平洋海隆沉积物到旧地壳上覆和南太平洋环流下覆的沉积物，使用从以前ODP/DSDP航段获得的样品（主要是OOP航次201），并有机会在南太平洋环流的R/V Roger Revelle上进行预定的IODP现场调查（2006年12月-2007年1月），我们建议建议检查原核生物群落的代谢活动，生物量，和支持地球化学在极端贫营养亚表层沉积物的南太平洋。在“Revelle”号考察船上进行的国际大洋钻探方案现场调查提供了一个独特的机会，可以获得沉积物，用于微生物和生物地球化学测定，使用海底着陆器进行现场沉积物氧测定，并在现场调查期间获得地球物理和物理特性数据。我们正在申请资助，以支付一名博士生（36个月）、6个月的技术支持和海底着陆器的声学释放系统。

In collaboration with an international consortium we are proponents on an IODP proposal to address microbial activities and distributions in low activity sediments (IODP 662-Full). The project concerns the determination of prokaryotic biomass, activity, and biogeochemistry of the low-activity end-member of the deep sub-surface biosphere along transects from younger E. Pacific Rise sediments to sediments overlying older crust and underlying the south Pacific gyre, Using samples obtained from previous ODP/DSDP Legs (principally OOP Leg 201) and the opportunity to sail on a scheduled IODP Site Survey onboard the R/V Roger Revelle in the South Pacific gyre (Dec 2006- Jan.2007), we propose to propose to examine the metabolic activities, biomass of prokaryotic communities, and supporting geochemistry in the extremely oligotrophic sub-surface sediments of the South Pacific. The IODP Site Survey aboard the R/V Revelle offers the unique opportunity to obtain sediments for microbiological and biogeochemical determinations, in situ sediment oxygen determinations using benthic landers, coupled with geophysical and physical property data to be obtained during the site survey. We are are applying for support to cover a doctoral student (36 months), six months of technical support, and an acoustic release system for the benthic landers.