New and Net Production and Total Dissolved Inorganic Carbon Changes in Surface Ocean Waters

在最近的海洋生产研究中，一个隐含的假设是，新的产量可以在数量上转化为群落净产量。新再生模型和净总量模型的应用被应用于诸如海洋生物学如何以及在多大程度上影响来自地表水的物质通量等关键问题。这项研究目前受到对模型与物质通量的关系，甚至模型之间的关系的非定量理解的限制。本研究是对净产量和总产量（使用氧气和总溶解无机碳变化）以及新产量和再生产量（使用15N）之间关系的实地调查。质量平衡和示踪率测量将在同一时间尺度上进行，使用新开发的原位采样器/孵育器进行同时测量。该研究的重点是测试与地表养分循环有关的平衡生长和平衡再矿化的隐含假设。这些假设将通过比较我们独特的孵化结果与这些周期相关的理论关系来检验。这种对与浮游生物群落代谢相关的短时间尺度营养动态的直接分析将改进浮游生物系统中测量物质通量的现场方法。

An implicit assumption in recent marine production research is that new production can be quantitatively converted to net community production. Applications of the new-regenerated model and net-gross model are applied to critical questions such as how and to what extent ocean biology affects material flux from surface waters. This research is currently limited by a non-quantitative understanding of how the models relate to material flux or even how the models relate to each other. This research is a field investigation of the relationship between net and gross production (using both oxygen and Total Dissolved Inorganic Carbon changes) and new and regenerated production (using 15N). Both mass balance and tracer rate measurements will be made on the same time scale, using newly developed in situ samplers/incubators for simultaneous measurements. The study focuses on testing the implicit assumptions of balanced growth and balanced remineralization that relate surface nutrient cycles. The assumptions will be tested by comparing the results of our unique incubations with the theoretical relationships relating these cycles. This direct analysis for short time scale nutrient dynamics associated with plankton community metabolism will lead to improved field methods for measuring material throughput in planktonic systems.