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: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=450510
• 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.

这项研究的目标是研究文蛤Yoldia Hyperborea的摄食、消化和营养，它生活在纽芬兰沿海水域的细泥中，温度永久低于0°C。文蛤严重依赖春季硅藻水华的有机物，后者沉入海底。一个主要目标是确定文蛤对断断续续的食物供应的反应。生活在冷海大陆架底部沉积物中的无脊椎动物在该系统的生态中发挥着重要作用，并代表了大量固定在底栖生物群落中的碳，但人们对它们的生物学还没有很好的了解。全年低于0摄氏度的水域非常接近，这为研究冷水生态和生态生理学提供了一个天然实验室，也允许频繁采样。这项工作还将侧重于文蛤积累长链多不饱和脂肪酸，这对维持生物膜的完整性非常重要。