Aboveground-belowground interactions drive the relationship between plant diversity and ecosystem function

地上地下相互作用驱动植物多样性与生态系统功能之间的关系

• 批准号: 220971425
• 负责人: Professor Dr. Nico Eisenhauer
• 金额: --
• 依托单位: Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv)
• 依托单位国家: 德国
• 项目类别: Independent Junior Research Groups
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/220971425?language=en
• 关键词: Aboveground; belowground; interactions; drive; relationship

The positive relationship between plant diversity and ecosystem functioning is likely to be co-determined by aboveground-belowground multitrophic interactions. Considering and manipulating such interactions thus is likely to significantly improve the mechanistic understanding of BEF relationships. The present proposal comprehensively investigates long-term (>4 years) plant diversity effects on soil microorganisms, nematodes and other soil invertebrates across different ecosystems (grassland and forest ecosystems) and global change contexts (elevated atmospheric CO2 concentrations, N deposition, warming and drought) in order to extract general mechanisms. Complementary and well-directed laboratory experiments will be conducted to simulate soil feedback effects resulting from plant diversity-induced changes in soil food webs. This novel approach will allow investigating the balance between negative and positive soil feedback effects and the consequences for ecosystem functioning. This holistic knowledge of changes in and interactions of above- and belowground processes is crucial to predict the long-term consequences of plant community simplification for ecosystem functioning. Experimental work will be complemented with the meta-analysis of previous work in order to reconcile prior inconsistent findings. Collaborations with some of the world‘s leading international scientists in BEF research, at the TU München and the Helmholtz Zentrum München will yield unique mechanistic insights into the BEF relationship. The main task of the present proposal is to disentangle the driving forces of plant diversity effects on soil biota as well as subsequent positive and negative feedback effects on plants. In order to achieve this, the present project has four major goals:(i) Investigate long-term plant diversity effects on soil biota and functions across multiple settings in order to derive general conclusions(ii) Investigate the significance of plant diversity-induced positive and negative soil feedback effects on plant performance(iii) Investigate if anthropogenic stressor effects reinforce plant diversity effects on soil biota and subsequent soil feedback effects(iv) Synthesize results and perform meta-analyses in order to understand and reconcile inconsistent findings of previous studies on plant diversity effects on soil biota, and relate subsequent changes in soil food webs to alterations in ecosystem functioning.

植物多样性和功能之间的正相关可能会通过地上阳光地上的穆尔特式teractions来确定。大气中的二氧化碳浓度，变暖和干旱）是为了提取一般机制。土壤反馈的茎的功能。 BEF关系。目前的提议的主要任务是将Y对土壤生物群的影响分歧，因为随后对植物的正面和负面反馈影响：多种设置以得出一般结论（ii）植物多样性诱导的阳性和负反馈对植物E（iii）的重要性，研究人为应激源是否影响植物对土壤Biota的植物多样性对土壤生物群的多样性和后序列效果，并执行Meta-inda selver and seal and secor meta-indersert and coneconcile先前关于植物多样性对土壤生物群的影响的研究结果不一致，土壤食物网的变化对生态系统功能的改变。

项目成果

Consumers control carbon

消费者控制碳

• DOI: 10.1038/s41559-017-0352-y
• 发表时间: 2017
• 期刊: Nature Ecology & Evolution
• 影响因子: 16.8
• 作者: Eisenhauer N

Plant diversity effects on soil food webs are stronger than those of elevated CO2 and N deposition in a long-term grassland experiment

• DOI: 10.1073/pnas.1217382110
• 发表时间: 2013-04-23
• 期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• 影响因子: 11.1
• 作者: Eisenhauer, Nico;Dobies, Tomasz;Reich, Peter B.
• 通讯作者: Reich, Peter B.

Biodiversity increases the resistance of ecosystem productivity to climate extremes

• DOI: 10.1038/nature15374
• 发表时间: 2015-10-22
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Isbell, Forest;Craven, Dylan;Eisenhauer, Nico
• 通讯作者: Eisenhauer, Nico