干旱区生态环境知识资源中心(Arid): Geochemically Defined Space-for-Time Transects Successfully Capture Microbial Dynamics Along Lacustrine Chronosequences in a Polar Desert

Arid

DOI	10.3389/fmicb.2021.783767
	Geochemically Defined Space-for-Time Transects Successfully Capture Microbial Dynamics Along Lacustrine Chronosequences in a Polar Desert
	Monteiro, Maria R.; Marshall, Alexis J.; Hawes, Ian; Lee, Charles K.; McDonald, Ian R.; Cary, Stephen Craig
通讯作者	Cary, SC (corresponding author)，Univ Waikato, Int Ctr Terr Antarct Res, Hamilton, New Zealand. ; Cary, SC (corresponding author)，Univ Waikato, Te Aka Matuatua Sch Sci, Hamilton, New Zealand.
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2022
卷号	12
英文摘要	The space-for-time substitution approach provides a valuable empirical assessment to infer temporal effects of disturbance from spatial gradients. Applied to predict the response of different ecosystems under current climate change scenarios, it remains poorly tested in microbial ecology studies, partly due to the trophic complexity of the ecosystems typically studied. The McMurdo Dry Valleys (MDV) of Antarctica represent a trophically simple polar desert projected to experience drastic changes in water availability under current climate change scenarios. We used this ideal model system to develop and validate a microbial space-for-time sampling approach, using the variation of geochemical profiles that follow alterations in water availability and reflect past changes in the system. Our framework measured soil electrical conductivity, pH, and water activity in situ to geochemically define 17 space-for-time transects from the shores of four dynamic and two static Dry Valley lakes. We identified microbial taxa that are consistently responsive to changes in wetness in the soils and reliably associated with long-term dry or wet edaphic conditions. Comparisons between transects defined at static (open-basin) and dynamic (closed-basin) lakes highlighted the capacity for geochemically defined space-for-time gradients to identify lasting deterministic impacts of historical changes in water presence on the structure and diversity of extant microbial communities. We highlight the potential for geochemically defined space-for-time transects to resolve legacy impacts of environmental change when used in conjunction with static and dynamic scenarios, and to inform future environmental scenarios through changes in the microbial community structure, composition, and diversity.
英文关键词	space-for-time (SFT) substitution climate change polar desert environments microbial communities wetness gradients Antarctica
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000756063800001
WOS关键词	MCMURDO DRY VALLEYS ; CLIMATE-CHANGE ; ASSEMBLY PROCESSES ; WATER ; VARIABILITY ; ANTARCTICA ; DIVERSITY ; GRADIENT ; MODELS
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376492
作者单位	[Monteiro, Maria R.; Marshall, Alexis J.; Lee, Charles K.; McDonald, Ian R.; Cary, Stephen Craig] Univ Waikato, Int Ctr Terr Antarct Res, Hamilton, New Zealand; [Monteiro, Maria R.; Marshall, Alexis J.; Hawes, Ian; Lee, Charles K.; McDonald, Ian R.; Cary, Stephen Craig] Univ Waikato, Te Aka Matuatua Sch Sci, Hamilton, New Zealand
推荐引用方式 GB/T 7714	Monteiro, Maria R.,Marshall, Alexis J.,Hawes, Ian,et al. Geochemically Defined Space-for-Time Transects Successfully Capture Microbial Dynamics Along Lacustrine Chronosequences in a Polar Desert[J],2022,12.
APA	Monteiro, Maria R.,Marshall, Alexis J.,Hawes, Ian,Lee, Charles K.,McDonald, Ian R.,&Cary, Stephen Craig.(2022).Geochemically Defined Space-for-Time Transects Successfully Capture Microbial Dynamics Along Lacustrine Chronosequences in a Polar Desert.FRONTIERS IN MICROBIOLOGY,12.
MLA	Monteiro, Maria R.,et al."Geochemically Defined Space-for-Time Transects Successfully Capture Microbial Dynamics Along Lacustrine Chronosequences in a Polar Desert".FRONTIERS IN MICROBIOLOGY 12(2022).