The Timing of Early Spring Plankton Blooms in Relation to Benthic Productivity

早春浮游生物繁殖时间与底栖生产力的关系

• 批准号: 8800532
• 负责人: Leon Cammen
• 金额: $ 5.3万
• 依托单位: Bigelow Laboratory for Ocean Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-15 至 1989-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8800532&HistoricalAwards=false
• 关键词: Timing; Early; Spring; Plankton; Blooms

The goal of the research is to examine the linkages between the water column and the sediments to understand how interannual fluctuations in the magnitude and pattern of pelagic production result in variability in production of benthic (bottom-dwelling) organisms. The principal investigators hypothesize that the timing of the spring phytoplankton bloom helps determine the amount of organic matter reaching the bottom, as follows: (1) during early blooms, colder water temperatures slow bloom consumption by grazers in the water column; (2) early blooms limit the growth of grazers, which may themselves control the magnitude and duration of the bloom; and (3) organic matter from early blooms that reaches the bottom will degrade less rapidly because of colder temperatures. Before considering, in depth, field studies of their hypothesis, the prinicipal investigators will develop a mathematical simulation model of the spring bloom based on data obtained from the literature and their best estimate of unknown parameters. This simulation model will serve to clarify the mode of action of the spring bloom and indicate whether an exceptionally early or late bloom could have a significant effect on benthic production.

本研究的目的是探讨 水柱和沉积物之间的联系来了解 年际波动的规模和模式 中上层生产导致生产的变化， 底栖生物。 校长 研究人员推测， 浮游植物的大量繁殖有助于确定 （1）在早期， 水华，较冷的水温减缓了水华的消耗， 食草动物在水柱;（2）早期开花限制生长 食草动物，这可能本身控制的大小， 花期的持续时间;（3）早期开花的有机物 到达底部的生物降解的速度会慢一些， 更冷的温度。 在深入考虑外地之前， 研究他们的假设，主要研究人员将 建立了春季水华的数学模拟模型 根据从文献中获得的数据和他们最好的 未知参数的估计 该模拟模型将 有助于阐明春季开花的作用方式， 表明异常早或晚的开花是否会 对底栖生物的生产有重大影响。