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具有深远的影响，这些影响通常在食物网的规模上表现出来。我们建议通过更改网络底部的食物的可用性和质量来操纵具有高度解决数据的量化量化的食物网。这补充了我们对同一系统的“自上而下”操作已经获得的数据，在该系统中我们引入了新的顶级捕食者。拟议的研究将通过改善光线限制，从而增加蒸汽中的藻类产量，从而提高食物网中自thonosos途径的相对（并且是绝对）的重要性。我们将探索多个生物组织的一系列反应，从单个物种的种群动态到生态系统过程和整个溪流代谢。此外，我们将使用这些经验数据来告知和开发新的理论模型，这些模型将代谢理论与食物网中的生态化学计量联系起来。

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