Ocean carbon sequestration: Particle fragmentation by copepods as a significant unrecognised factor?
Ocean carbon sequestration: Particle fragmentation by copepods as a significant unrecognised factor?
复制标题
海洋碳封存：桡足类的颗粒破碎是一个未被认识的重要因素？
作者：
D. Mayor;W. Gentleman;T. R. Anderson
海洋生物通过固定大气中的二氧化碳，并将其作为下沉的碎屑颗粒排放到深海沃茨，帮助调节全球气候。新的观测结果表明，颗粒破碎是控制这些颗粒穿透海洋内部的深度的主要因素，因此也是控制构成碳从大气中隔离多久的主要因素。然而，人们对根本原因知之甚少。我们推测，小的，颗粒相关的桡足类，拦截和无意中打破下沉颗粒，因为他们寻找附着的原生生物猎物，是海洋中的主要代理人。我们使用一个新的海洋生态系统模型来探索这个想法。结果表明，在海洋地球化学模型中明确表示桡足类的颗粒破碎，为我们理解生物介导的海洋碳储存未来演变的能力提供了一个步骤。我们的研究结果强调了需要更好地了解颗粒相关桡足类的分布，丰度，生态学和生理学。
Ocean biology helps regulate global climate by fixing atmospheric CO2 and exporting it to deep waters as sinking detrital particles. New observations demonstrate that particle fragmentation is the principal factor controlling the depth to which these particles penetrate the ocean's interior, and hence how long the constituent carbon is sequestered from the atmosphere. The underlying cause is, however, poorly understood. We speculate that small, particle‐associated copepods, which intercept and inadvertently break up sinking particles as they search for attached protistan prey, are the principle agents of fragmentation in the ocean. We explore this idea using a new marine ecosystem model. Results indicate that explicitly representing particle fragmentation by copepods in biogeochemical models offers a step change in our ability to understand the future evolution of biologically‐mediated ocean carbon storage. Our findings highlight the need for improved understanding of the distribution, abundance, ecology and physiology of particle‐associated copepods.
影响因子：
4.5
作者：
H. Ploug;M. Iversen;G. Fischer
通讯作者：
H. Ploug;M. Iversen;G. Fischer
影响因子：
5.2
作者：
Henson, Stephanie A.;Sanders, Richard;Madsen, Esben
通讯作者：
Madsen, Esben