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

沉积物输送对底栖异养生物颗粒食物质量和数量的影响

• 批准号: 8916425
• 负责人: Arthur Nowell
• 金额: $ 25.5万
• 依托单位: University of Washington
• 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 1992-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8916425&HistoricalAwards=false
• 关键词: Effects; Sediment; Transport; Particulate; Food

Drs. Nowell, Jumars and Mayer 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 the 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.

Nowell，Jumars和Mayer博士将进行几项 补充研究以确定之间的关系 沿海环境中的沉积物迁移以及 底栖动物的食物量。 他们将围绕 对于存款饲养者来说，颗粒食品质量很差，尽管许多 该结果对于悬浮给料器也是有用的， 异养细菌和一般的异养生物。 研究 将从食品质量的实地测量，到实验室 用工程食品材料进行摄食反应的实验， 到实验室水槽实验， 沉积物动力学和食物质量变量。 与物种 这些估计，他们将调查 存款饲养者受益于水平沉积物的想法 运输作为增加粮食供应的速度，由于简单的 资源的横向均质化，表面存款 给料器受益于垂直水力分选产生的 通过再悬浮和再沉积，而存款馈线 由于运输而受益于微生物生长的刺激。