Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14060 |
The responses of microbial temperature relationships to seasonal change and winter warming in a temperate grassland | |
Birgander, Johanna1; Olsson, Pal Axel1; Rousk, Johannes2 | |
2018-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:8页码:3357-3367 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Microorganisms dominate the decomposition of organic matter and their activities are strongly influenced by temperature. As the carbon (C) flux from soil to the atmosphere due to microbial activity is substantial, understanding temperature relationships of microbial processes is critical. It has been shown that microbial temperature relationships in soil correlate with the climate, and microorganisms in field experiments become more warm-tolerant in response to chronic warming. It is also known that microbial temperature relationships reflect the seasons in aquatic ecosystems, but to date this has not been investigated in soil. Although climate change predictions suggest that temperatures will be mostly affected during winter in temperate ecosystems, no assessments exist of the responses of microbial temperature relationships to winter warming. We investigated the responses of the temperature relationships of bacterial growth, fungal growth, and respiration in a temperate grassland to seasonal change, and to 2 years' winter warming. The warming treatments increased winter soil temperatures by 5-6 degrees C, corresponding to 3 degrees C warming of the mean annual temperature. Microbial temperature relationships and temperature sensitivities (Q(10)) could be accurately established, but did not respond to winter warming or to seasonal temperature change, despite significant shifts in the microbial community structure. The lack of response to winter warming that we demonstrate, and the strong response to chronic warming treatments previously shown, together suggest that it is the peak annual soil temperature that influences the microbial temperature relationships, and that temperatures during colder seasons will have little impact. Thus, mean annual temperatures are poor predictors for microbial temperature relationships. Instead, the intensity of summer heat-spells in temperate systems is likely to shape the microbial temperature relationships that govern the soil-atmosphere C exchange. |
英文关键词 | Arrhenius and Ratkowsky temperature relationships experimental warming temperature dependence temperature sensitivity (Q(10)) winter warming |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437284700010 |
WOS关键词 | SOIL ORGANIC-MATTER ; BACTERIAL COMMUNITIES ; LEUCINE INCORPORATION ; ENZYME-ACTIVITIES ; CLIMATE-CHANGE ; GROWTH-RATE ; ADAPTATION ; DECOMPOSITION ; RESPIRATION ; SENSITIVITY |
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/17339 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Lund Univ, Dept Biol Biodivers, Lund, Sweden; 2.Lund Univ, Dept Biol, MEMEG Microbial Ecol, Lund, Sweden |
推荐引用方式 GB/T 7714 | Birgander, Johanna,Olsson, Pal Axel,Rousk, Johannes. The responses of microbial temperature relationships to seasonal change and winter warming in a temperate grassland[J]. GLOBAL CHANGE BIOLOGY,2018,24(8):3357-3367. |
APA | Birgander, Johanna,Olsson, Pal Axel,&Rousk, Johannes.(2018).The responses of microbial temperature relationships to seasonal change and winter warming in a temperate grassland.GLOBAL CHANGE BIOLOGY,24(8),3357-3367. |
MLA | Birgander, Johanna,et al."The responses of microbial temperature relationships to seasonal change and winter warming in a temperate grassland".GLOBAL CHANGE BIOLOGY 24.8(2018):3357-3367. |
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