呼吸
促进
碳循环
生态学
气候变化
生物量(生态学)
竞赛(生物学)
微生物种群生物学
适应(眼睛)
互惠主义(生物学)
生物
全球变暖
全球变化
环境科学
大气科学
生态系统
植物
细菌
物理
遗传学
神经科学
作者
Francisca C. García,Tom Clegg,Daniel Barrios O’Neill,Ruth Warfield,Samraat Pawar,Gabriel Yvon‐Durocher
出处
期刊:Nature microbiology
日期:2023-02-02
卷期号:8 (2): 272-283
被引量:7
标识
DOI:10.1038/s41564-022-01283-w
摘要
Respiratory release of CO2 by microorganisms is one of the main components of the global carbon cycle. However, there are large uncertainties regarding the effects of climate warming on the respiration of microbial communities, owing to a lack of mechanistic, empirically tested theory that incorporates dynamic species interactions. We present a general mathematical model which predicts that thermal sensitivity of microbial community respiration increases as species interactions change from competition to facilitation (for example, commensalism, cooperation and mutualism). This is because facilitation disproportionately increases positive feedback between the thermal sensitivities of species-level metabolic and biomass accumulation rates at warmer temperatures. We experimentally validate our theoretical predictions in a community of eight bacterial taxa and show that a shift from competition to facilitation, after a month of co-adaptation, caused a 60% increase in the thermal sensitivity of respiration relative to de novo assembled communities that had not co-adapted. We propose that rapid changes in species interactions can substantially change the temperature dependence of microbial community respiration, which should be accounted for in future climate–carbon cycle models. Accounting for species interactions is shown to be crucial for building more robust predictions of how climate change will affect the carbon cycle.
科研通智能强力驱动
Strongly Powered by AbleSci AI