Vertical Mixing and Resources Supply to Phytoplankton

[9317986] MacIntyre本研究探讨了浮游植物在日循环中通过湍流运动的垂直环流，以及这种环流如何影响光合速率。本文还探讨了通过纵向混合和水平交换向生长带提供养分的相对重要性。该项目包括垂直混合和水平交换的时间序列测量，以及对同一时期的光合速率和营养浓度概况的估计。这项研究将首次对垂直混合进行系统分析，直接测量湍流动力学，并将其与浮游植物的光环境联系起来。这些数据，再加上将收集到的关于营养物质动态运动的信息，将允许对初级生产力、营养竞争和浮游植物演替的基于资源的模型进行适当的分析。研究结果将在生态系统功能与健康分析、水体污染监测等方面具有一定的应用价值。＊＊＊

9317986 MacIntyre This research investigates the vertical circulation of phytoplankton by turbulent motions over diurnal cycles and how this circulation affects photosynthetic rates. It also investigates the relative importance of nutrient supply to the euphytic zone via diapycnal mixing and horizontal exchanges. The project comprises time-series measurements of vertical mixing and horizontal exchange coupled with estimates of photosynthetic rates and profiles of nutrient concentrations taken over the same periods. %%% This study will provide the first systematic analysis of vertical mixing in which turbulence dynamics are directly measured and related to the light environment of phytoplankton. These data, coupled with information to be gathered on the dynamics of nutrient movement, will permit proper analysis of resource-based models of primary productivity, nutrient competition, and phytoplankton succession. The results of this research will have applications in analysis of ecosystem function and health and aquatic pollution monitoring. ***