Nitrate Flux Associated with Vertically Phytoplankton in the Central North Pacific Gyre

Altabet 9525937 这一建议将从开阔洋中垂直迁移的藻席有助于北太平洋表层沃茨内氮的重新分布的观点出发，解决生物海洋学中的一个基本问题。 利用以前资助的船期，该项目将记录在整个上部100-300米，定量N输入，并在表层的垫在北太平洋环流中心的NO3-释放的潜力的Ringosolenia垫垂直分布。 这项研究将通过这些宏观关联来表征起源深度、迁移时间和绝对迁移率 并确定垫腐烂释放的NO3-是否被其他环境浮游植物吸收。 此外，该研究还将调查其他可能是垂直迁移者的浮游植物，如筛盘藻， 甲藻属， 盐球藻属 和 孤独的Rhizolenia，以确定他们是否也是 这一过程的重要组成部分。 在研究结束时，该项目将检查夏威夷以东和以西的北太平洋环流中心的沃茨。 这将导致对北太平洋环流海洋沃茨中浮游植物垂直迁移重要性的广泛空间理解。

Altabet 9525937 This proposal will address a fundamental problem in biological oceanography from the viewpoint that vertically migrating algal mats in the open ocean are instrumental in redistributing nitrogen within the surface waters of the North Pacific Ocean. Using previously funded shiptime, the project will document Rhizosolenia mat vertical distribution throughout the upper 100-300 m, the quantitative N inputs, and potential for NO3- release in the surface layers by mats in the central North Pacific gyre. The research will characterize depth of origin, migration times and absolute transport rates by these macroscopic associations and determine if NO3- released by mat decay is taken up by other ambient phytoplankton. In addition, the study will survey other phytoplankton that may be vertical migrators such as Ethmodiscus, Pyrocystis, Halosphaera and solitary Rhizosolenia to determine if they are also important components of this process. At the conclusion of the study, the project will have examined waters of the central North Pacific gyre both east and west of Hawaii. This should lead to a broad spatial understanding of the importance of phytoplankton vertical migration in the oceanic waters of the North Pacific gyre.