Role of benthic marine invertebrates in carbon flow

底栖海洋无脊椎动物在碳流中的作用

• 批准号: 9748-2007
• 负责人: Thompson, Raymond
• 金额: $ 1.68万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364893
• 关键词: Role; benthic; marine; invertebrates; carbon

The goal of this research is to study feeding, digestion and nutrition in a clam, Yoldia hyperborea, which lives in fine mud in coastal waters of Newfoundland at temperatures permanently below 0°C.  The clam depends heavily on organic matter from the spring diatom bloom, which sinks to the bottom.  A major objective is to determine how the clam responds to an intermittent food supply.  Invertebrate animals that live in bottom sediments on the continental shelf in cold oceans play an important role in the ecology of the system, and represent a significant amount of the carbon tied up in the benthic community, yet their biology is not well understood.  The close proximity of water that is below 0°C year-round provides a natural laboratory for studying cold-water ecology and ecophysiology and also permits frequent sampling.  The work will also focus on the accumulation of long-chain polyunsaturated fatty acids by the clam, which are important in maintaining the integrity of biological membranes.

这项研究的目的是研究蛤的摄食、消化和营养，这种蛤生活在纽芬兰沿海沃茨的细泥中，温度永远低于0°C。蛤严重依赖春季硅藻水华产生的有机物质，一个主要的目的是确定蛤蜊如何对间歇性的食物供应做出反应。生活在底部的无脊椎动物冷洋大陆架上的沉积物在该系统的生态学中发挥着重要作用，并代表着大量与底栖生物群落有关的碳，然而，它们的生物学还没有得到很好的理解。常年低于0°C的水的接近为研究寒冷提供了天然实验室，这项工作还将侧重于蛤蜊对长链多不饱和脂肪酸的积累，这种脂肪酸对维持生物膜的完整性很重要。