Seasonal effects on the stoichiometry of microbes, primary production, and nutrient cycling

Seasonal effects on the stoichiometry of microbes, primary production, and nutrient cycling
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季节对微生物化学计量、初级生产和养分循环的影响

DOI:
10.1007/s12080-020-00500-8
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发表时间:
2021
影响因子:
1.6
通讯作者:
Krumins, Jennifer Adams
Krumins, Jennifer Adams
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Carfora, Kristin;Forgoston, Eric;Billings, Lora;Krumins, Jennifer Adams

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我们开发了一个隔间模型的灵感来自生产者-食草动物-微生物土壤食物网,并确定如何自然发生的生产者和碎屑质量的季节性变化影响微生物营养循环和初级生产的反馈。我们表明,季节性变化的化学计量质量的生产者,再加上草食动物放牧的效率可能会引起开关的化学计量签名,因此微生物群落的功能。微生物分解者负责生态系统中必需营养物质的流动。我们的模型使人们能够定量地了解细菌或真菌占主导地位的分解者群落之间的临界点,更一般地说,微生物分解者,初级生产和营养循环之间的复杂关系。
We develop a compartment model inspired by producer–herbivore–microbe soil food webs and determine how the naturally occurring seasonal variation in producer and detrital quality affects microbial nutrient cycling and the feedback to primary production. We show that seasonal changes in the stoichiometric quality of the producer coupled with the efficiency of herbivore grazing could induce a switch in the stoichiometric signature and therefore the functioning of the microbial community. Microbial decomposers are responsible for the flux of essential nutrients through an ecosystem. Our model enables one to quantitatively understand the tipping points between bacterially or fungally dominated decomposer communities, and more generally, the complex relationships between microbial decomposers, primary production, and nutrient cycling.
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