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首页> 外文会议>SPIE Defense + Security Conference >On plankton distributions and biophysical interactions in diverse coastal and limnological environments
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On plankton distributions and biophysical interactions in diverse coastal and limnological environments

机译：在不同沿海和林类环境中的浮游生物分布和生物物理互动

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Digital holography provides a unique perspective towards studying aquatic particles/organisms. The ability to sample particles in undisturbed conditions, coupled with the ability to generate 3-D spatial distributions is currently unmatched by any other technique. To leverage these advantages, field experiments with the goal of characterizing aquatic particle properties in situ, were conducted using a submersible holographic imaging system. Diverse aquatic environments were sampled over 3 separate deployments between 2014 and 2017. The areas included: (a) The Gulf of Mexico (GoM), in the vicinity of the Mississippi river plume; (b) Lake Erie; and (c) East Sound in the US Pacific Northwest. A database of more than two million different types of particles in the 10.1-0000 m size range, was created after processing > 100,000 holograms. Particle size distributions (PSDs) exhibited a Junge-type distribution when characterized by size grouping into logarithmically spaced bins. Particles/plankton were also classified into different groups (e.g. diatoms, copepods). Results presented will be broadly grouped into two parts: (a) PSDs at different depths within the water column during the occurrence of a Microcystis bloom at Lake Erie and individual cell counts within these colonies; and (b) Vertical structure of plankton in East Sound, specifically the presence of diatom thin layers. Finally, the rich diversity in species composition in the GoM and successful data collection towards creating a training set to implement automated classification routines will be briefly discussed.
机译：数字全息术提供了研究水生粒子/生物的独特视角。在不受干扰的条件下采样颗粒的能力，与产生3-D空间分布的能力相结合目前是通过任何其他技术的不匹配。为了利用这些优点，使用潜水全息成像系统进行地原位表征水生颗粒性能的现场实验。在2014年和2017年间，在3种独立的部署中取样了多种水生环境。包括：（a）墨西哥湾（GOM），位于密西西比河羽毛附近; （b）伊利湖; （c）美国太平洋西北地区的东声。 10.1-0000米尺寸范围内的多百万种不同类型粒子的数据库是在处理> 100,000全息图之后创建的。粒度分布（PSDS）在以对对数间隔的箱中的尺寸分组以尺寸分组表现为junge型分布。颗粒/浮游生物也分为不同的群体（例如，硅藻，桡足类）。提出的结果将大致分为两部分：（a）在水柱内的不同深度的PSD在艾莉湖盛开的微囊杆菌和这些菌落中的个体细胞计数期间的不同深度; （b）东声垂直结构的浮游生物，特别是硅藻薄层的存在。最后，将简要讨论在GOM中的物种组成中的丰富多样性，并将在创建培训集以实施自动分类例程的培训集合中。

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