Estuarine Turbidity Maxima (ETM) in Land Margin Ecosystem: ETM Dynamics and the Impact of Anthropogenic Change

控制沿海环境中浮游植物、细菌和较高营养水平的分布和速率过程的因素对我国陆地边缘系统的适当描述和管理特别重要。Simenstad博士和他的同事将研究人类活动对哥伦比亚河河口最大浑浊度(ETM)的动态和影响。ETM的假设是促进和控制被困的有机材料的微生物转化，并促进利用食品微生物循环的主要消费者的密集人口的维持。这个经验丰富的团队将进行一项多学科的努力，重点放在系统的物理和生物学上。预计这项工作将提供有关物理过程的宝贵信息，这些过程可能最终控制生物成分在河口内的保留和再循环。

The factors which control the distribution and rate processes of phytoplankton, bacteria and higher trophic levels in the coastal environment are of particular importance to the proper characterization and management of our nation's land-margin systems. Dr. Simenstad and colleagues will study the dynamics and impact of anthropogenic effects upon the estuarine turbidity maximum (ETM) in the Columbia River. The ETM is hypothesized to promote and control microbial conversion of entrapped organic material and to facilitate the maintenance of dense populations of primary consumers, which exploit the microbial loop for food. This well experienced team will undertake a multi-disciplinary effort focusing on the physics and biology of the system. It is expected that the effort will provide valuable information about the physical processes which may ultimately control the retention and recirculation of the biological components within the estuary.