Macrozooplankton Grazing in a Temperate Fjord

大型浮游动物在温带峡湾吃草

• 批准号: 8917672
• 负责人: Michael Dagg
• 金额: $ 18.99万
• 依托单位: Louisiana Universities Marine Corsortium
• 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: 1990-04-15 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917672&HistoricalAwards=false
• 关键词: Macrozooplankton; Grazing; Temperate; Fjord

In Dabob Bay, Washington, the annual cycles of phytoplankton standing stock and production rate exhibit spectacular increases (phytoplankton blooms) in the spring and the autumn, indicating a lack of control by the grazer populations. Yet virtually all of the phytoplankton production is ultimately consumed by grazers. Dr. Dagg will test a conceptual model hypothesizing the identities of the micro- and macro-zooplankton grazer species and postulating a mechanism for the annual balance between phytoplankton growth and grazing. This research will field test the hypothetical model. The functional dynamics of zooplankton grazers (both micro and macrozooplankton) will be established on four extended cruises and budgets of carbon flow will be constructed. Grazing rates will be experimentally measured in the field.

在华盛顿州的达博湾，浮游植物现存量和生产量的年度周期在春季和秋季都出现了惊人的增长(浮游植物大量繁殖)，这表明食草动物种群缺乏控制。然而，几乎所有的浮游植物最终都被食草动物吃掉了。达格博士将测试一个概念模型，该模型假设微型和大型浮游动物食草动物物种的身份，并假设浮游植物生长和放牧之间的年度平衡机制。本研究将对假设模型进行实地检验。将在四个扩展航次上建立浮游动物食草动物(微型和大型浮游动物)的功能动力学，并建立碳流预算。放牧率将在田间进行实验测量。