Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14605 |
Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales | |
Min, Kyungjin1,4; Buckeridge, Kate1,5; Ziegler, Susan E.2; Edwards, Kate A.3; Bagchi, Samik1,6; Billings, Sharon A.1 | |
2019-05-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:5页码:1793-1807 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada; Scotland |
英文摘要 | Accurate representation of temperature sensitivity (Q(10)) of soil microbial activity across time is critical for projecting soil CO2 efflux. As microorganisms mediate soil carbon (C) loss via exo-enzyme activity and respiration, we explore temperature sensitivities of microbial exo-enzyme activity and respiratory CO2 loss across time and assess mechanisms associated with these potential changes in microbial temperature responses. We collected soils along a latitudinal boreal forest transect with different temperature regimes (long-term timescale) and exposed these soils to laboratory temperature manipulations at 5, 15, and 25 degrees C for 84 days (short-term timescale). We quantified temperature sensitivity of microbial activity per g soil and per g microbial biomass at days 9, 34, 55, and 84, and determined bacterial and fungal community structure before the incubation and at days 9 and 84. All biomass-specific rates exhibited temperature sensitivities resistant to change across short- and long-term timescales (mean Q(10) = 2.77 +/- 0.25, 2.63 +/- 0.26, 1.78 +/- 0.26, 2.27 +/- 0.25, 3.28 +/- 0.44, 2.89 +/- 0.55 for beta-glucosidase, N-acetyl-beta-d-glucosaminidase, leucine amino peptidase, acid phosphatase, cellobiohydrolase, and CO2 efflux, respectively). In contrast, temperature sensitivity of soil mass-specific rates exhibited either resilience (the Q(10) value changed and returned to the original value over time) or resistance to change. Regardless of the microbial flux responses, bacterial and fungal community structure was susceptible to change with temperature, significantly differing with short- and long-term exposure to different temperature regimes. Our results highlight that temperature responses of microbial resource allocation to exo-enzyme production and associated respiratory CO2 loss per unit biomass can remain invariant across time, and thus, that vulnerability of soil organic C stocks to rising temperatures may persist in the long term. Furthermore, resistant temperature sensitivities of biomass-specific rates in spite of different community structures imply decoupling of community constituents and the temperature responses of soil microbial activities. |
英文关键词 | activation energy microbial adaptation microbial biomass microbial community structure microbial resilience microbial resistance Q(10) soil warming |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465103600018 |
WOS关键词 | SOIL EXTRACELLULAR ENZYMES ; SUBSTRATE AVAILABILITY ; BACTERIAL COMMUNITIES ; THERMAL-ACCLIMATION ; MEDIATED CHANGES ; RESPIRATION ; CARBON ; NITROGEN ; ADAPTATION ; RESPONSES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182926 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Kansas, Kansas Biol Survey, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA; 2.Mem Univ, Dept Earth Sci, St John, NF, Canada; 3.Nat Resources Canada, Canadian Forest Serv, Ottawa, ON, Canada; 4.Clemson Univ, Dept Plant & Environm Sci, Clemson, SC USA; 5.Univ Edinburgh, Global Acad Agr & Food Secur, Edinburgh, Midlothian, Scotland; 6.Digested Organ, Farmington Hills, MI USA |
推荐引用方式 GB/T 7714 | Min, Kyungjin,Buckeridge, Kate,Ziegler, Susan E.,et al. Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales[J]. GLOBAL CHANGE BIOLOGY,2019,25(5):1793-1807. |
APA | Min, Kyungjin,Buckeridge, Kate,Ziegler, Susan E.,Edwards, Kate A.,Bagchi, Samik,&Billings, Sharon A..(2019).Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales.GLOBAL CHANGE BIOLOGY,25(5),1793-1807. |
MLA | Min, Kyungjin,et al."Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales".GLOBAL CHANGE BIOLOGY 25.5(2019):1793-1807. |
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