Manipulating nutrient fluxes within a quantified food web: linking food web structure, ecological stoichiometry and biogeochemical processes

操纵量化食物网内的营养通量：将食物网结构、生态化学计量和生物地球化学过程联系起来

• 批准号: NE/E012175/1
• 负责人: John Jones
• 金额: $ 61.34万
• 依托单位: NERC CEH (Up to 30.11.2019)
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FE012175%2F1
• 关键词: Manipulating; nutrient; fluxes; within; quantified

Humans have profound effects on the structure and functioning of biological communities, and these are often manifested at the scale of the food web. We propose to manipulate a well characterised quantified food web for which we have highly resolved data, by altering the availability and quality of the food at the base of the web. This complements the data we have already obtained on a 'top-down' manipulation of the same system where we introduced a new top predator. The proposed research will stimulate algal production in the steam by ameliorating light limitation thereby increasing the relative (and absolute) importance of autocthonous pathways in the food web. We will explore a range of responses across multiple levels of biological organisation, from population dynamics of individual species to ecosystem processes and whole stream metabolism. Further we will use these empirical data to inform and develop new theoretical models that link metabolic theory and ecological stoichiometry in food webs.

人类对生物群落的结构和功能有着深远的影响，这些影响往往表现在食物网的规模上。我们建议操纵一个很好的特点量化的食物网，我们有高分辨率的数据，通过改变食物的可用性和质量在网络的基础。这补充了我们已经获得的关于同一系统的“自上而下”操作的数据，在该系统中，我们引入了一种新的顶级捕食者。拟议的研究将通过改善光限制来刺激蒸汽中的藻类生产，从而增加食物网中本地途径的相对（和绝对）重要性。我们将探索生物组织的多个层次的一系列反应，从单个物种的种群动态到生态系统过程和整个河流的新陈代谢。此外，我们将使用这些经验数据，通知和发展新的理论模型，在食物网中的代谢理论和生态化学计量学。

项目成果

Consumer-resource elemental imbalances in a nutrient-rich stream

营养丰富的河流中的消费者资源元素失衡

• DOI: 10.1899/11-052
• 发表时间: 2012
• 期刊: Freshwater Science
• 影响因子: 1.8
• 作者: Lauridsen R

Consequences of inferring diet from feeding guilds when estimating and interpreting consumer-resource stoichiometry

在估计和解释消费者资源化学计量时从饲养协会推断饮食的后果

• DOI: 10.1111/fwb.12361
• 发表时间: 2014
• 期刊: Freshwater Biology
• 影响因子: 2.7
• 作者: Lauridsen R