气候变化领域集成服务门户(CCPortal): Quality matters: Response of bacteria and ciliates to different allochthonous dissolved organic matter sources as a pulsed disturbance in shallow lakes

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DOI	10.1016/j.scitotenv.2024.170140
	Quality matters: Response of bacteria and ciliates to different allochthonous dissolved organic matter sources as a pulsed disturbance in shallow lakes
	Yalcin, Guelce; Yildiz, Dilvin; Caldero-Pascual, Maria; Yetim, Sinem; Sahin, Yigit; Parakatselaki, Maria-Eleni; Avci, Feride; Karakaya, Nusret; Ladoukakis, Emmanuel D.; A., Stella; Ali, Kemal; Jeppesen, Erik; Beklioglu, Meryem
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	916
卷号	916
英文摘要	Shallow lake ecosystems are particularly prone to disturbances such as pulsed dissolved organic matter (allochthonous-DOM; hereafter allo-DOM) loadings from catchments. However, the effects of allo-DOM with contrasting quality (in addition to quantity) on the planktonic communities of microbial loop are poorly understood. To determine the impact of different qualities of pulsed allo-DOM disturbance on the coupling between bacteria and ciliates, we conducted a mesocosm experiment with two different allo-DOM sources added to mesocosms in a single-pulse disturbance event: Alder tree leaf extract, a more labile (L) source and HuminFeed (R) (HF), a more recalcitrant source. Allo-DOM sources were used as separate treatments and in combination (HFL) relative to the control without allo-DOM additions (C). Our results indicate that the quality of allo-DOM was a major regulator of planktonic microbial community biomass and/or composition through which both bottom-up and top-down forces were involved. Bacteria biomass showed significant nonlinear responses in L and HFL with initial increases followed by decreases to pre-pulse conditions. Ciliate biomass was significantly higher in L compared to all other treatments. In terms of composition, bacterivore ciliate abundance was significantly higher in both L and HFL treatments, mainly driven by the bacterial biomass increase in the same treatments. GAMM models showed negative interaction between metazoan zooplankton biomass and ciliates, but only in the L treatment, indicating top-down control on ciliates. Ecosystem stability analyses revealed overperformance, high resilience and full recovery of bacteria in the HFL and L treatments, while ciliates showed significant shift in of allo-DOM quality shaping the response within the microbial loop not only through triggering different scenarios in biomass, but also the community composition, stability, and species interactions (top-down and bottom
英文关键词	Brownification; Nutrients; Mesocosm experiment
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001172798500001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301887
作者单位	Middle East Technical University; Middle East Technical University; Middle East Technical University; Dundalk Institute of Technology; Ege University; Ege University; University of Crete; Abant Izzet Baysal University; Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB); Universidade Federal do Rio Grande do Norte; Aarhus University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Yalcin, Guelce,Yildiz, Dilvin,Caldero-Pascual, Maria,et al. Quality matters: Response of bacteria and ciliates to different allochthonous dissolved organic matter sources as a pulsed disturbance in shallow lakes[J],2024,916.
APA	Yalcin, Guelce.,Yildiz, Dilvin.,Caldero-Pascual, Maria.,Yetim, Sinem.,Sahin, Yigit.,...&Beklioglu, Meryem.(2024).Quality matters: Response of bacteria and ciliates to different allochthonous dissolved organic matter sources as a pulsed disturbance in shallow lakes.SCIENCE OF THE TOTAL ENVIRONMENT,916.
MLA	Yalcin, Guelce,et al."Quality matters: Response of bacteria and ciliates to different allochthonous dissolved organic matter sources as a pulsed disturbance in shallow lakes".SCIENCE OF THE TOTAL ENVIRONMENT 916(2024).