Effects of Sediment Transport on Particulate Food Quality & Quantity for Benthic Heterotrophs

沉积物输送对颗粒食品质量的影响

• 批准号: 8922202
• 负责人: Lawrence Mayer
• 金额: $ 20万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922202&HistoricalAwards=false
• 关键词: Effects; Sediment; Transport; Particulate; Food

Drs. Mayer, Nowell and Jumars will undertake several complementary studies to determine the relationship between sediment transport in coastal environments and the quality and quantity of food for benthic animals. They will focus on particulate food quality for deposit feeders, although many of our results also should be useful for suspension feeders, heterotrophic bacteria, and heterotrophs in general. The studies will range from field measurements of food quality, to laboratory experiments of feeding responses with engineered food materials, to laboratory flume experiments testing the relationships between sediment dynamics and food quality variables. With species conveniently available and these estimates, they will investigate the ideas that deposit feeders benefit from horizontal sediment transport as an increase in rate of food supply due to simple lateral homogenization of the resource, that surface deposit feeders benefit from the vertical hydrodynamic sorting produced by resuspension and redeposition, and that deposit feeders benefit from stimulation of microbial growth due to transport.

博士。 Mayer，Nowell和Jumars将进行几项互补研究，以确定沿海环境中沉积物运输与底栖动物的食物质量和数量之间的关系。 尽管我们的许多结果也适用于悬浮剂喂食器，异养细菌和异育菌，但他们将专注于沉积物饲养者的颗粒食品质量。 这些研究的范围从粮食质量的现场测量到使用工程食品材料进行喂养反应的实验室实验，再到测试沉积物动力学与食物质量变量之间关系的实验室水槽实验。 借助便利的物种和这些估计值，他们将调查沉积饲养者从水平沉积物中受益的想法，因为由于资源的简单横向均匀化而增加了食品供应速率，表面沉积物饲养者受益于重悬于垂直的流体动力学分类和重新上调产生的垂直流体动力分类，并且该沉积物受益于由于运输而受益于刺激微型生长。