DOI: 10.1016/j.watres.2018.11.022
Scopus记录号: 2-s2.0-85056799930
论文题名: Occurrence and distribution of viruses and picoplankton in tropical freshwater bodies determined by flow cytometry
作者: Yang Y. ; Gu X. ; Te S.H. ; Goh S.G. ; Mani K. ; He Y. ; Gin K.Y.-H.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 342
结束页码: 350
语种: 英语
英文关键词: Cyanobacteria
; Flow cytometry
; Occurrence
; Phytoplankton
; Viruses
Scopus关键词: Agriculture
; Catchments
; Computer viruses
; Ecosystems
; Flow cytometry
; Land use
; Nutrients
; Phytoplankton
; Plankton
; Reservoirs (water)
; Surface waters
; Tropics
; Water quality
; Bacterial indicators
; Cyanobacteria
; Freshwater ecosystem
; Microbial communities
; Occurrence
; Occurrence and distribution
; Physicochemical property
; Water quality parameters
; Viruses
; fresh water
; ArcGIS
; bacterium
; catchment
; concentration (composition)
; cyanobacterium
; flow cytometry
; freshwater ecosystem
; microbial community
; phytoplankton
; picoplankton
; spatial distribution
; surface water
; tropical environment
; virus
; water quality
; agriculture
; Article
; catchment
; concentration (parameters)
; controlled study
; cyanobacterium
; Enterococcus
; environmental parameters
; flow cytometry
; freshwater environment
; human
; human activities
; land use
; microbial community
; nonhuman
; nutrient
; parkland
; physical chemistry
; picocyanobacterium
; picoheterotroph
; picophytoplankton
; picoplankton
; priority journal
; Pseudomonas
; tropics
; urban area
; viral contamination
; virus detection
; water quality
; Bacteria (microorganisms)
; Cyanobacteria
英文摘要: This study aimed to examine the drivers in shaping the occurrence and distribution of total viruses and picoplankton in tropical freshwater ecosystems. Flow cytometry was used to quantify the concentrations of total viruses, picoheterotrophs, picophytoplankton, and picocyanobacteria. Three land use patterns (urban-, agriculture- and parkland-dominated) were evaluated using ArcGIS. Significant correlations were observed between water-borne microbial targets and water quality parameters (0.175 ≤ |r| ≤ 0.441), nutrients (0.250 ≤ r ≤ 0.570) and land use factors (0.200 ≤ |r| ≤ 0.460). In particular, the concentrations of total viruses and picoheterotrophic cells were higher in catchments whereas the abundances of picophytoplankton and picocyanobacteria were higher in reservoirs. Total viruses and picoplankton had higher concentrations in urban- and agriculture-dominated areas, probably due to anthropogenic inputs and agricultural inputs, respectively. Although surface water is a complex matrix influenced by niche-based (i.e., physicochemical properties, nutrients, land use impact etc.) and neutral-based factors (i.e., ecological drift, dispersal and species), land use patterns could help to elucidate the occurrence and distribution of the total microbial community at the macroscopic level. Meanwhile, inter-correlations among viruses, picoplankton and picoheterotrophs (0.715 ≤ r ≤ 0.990) also substantiates their mutual interactions in influencing the microbial community. Furthermore, the relationships between total microbial cells and bacterial and viral indicators were also investigated. Concentrations of total viruses, picoplankton and picoheterotrophs were positively correlated with bacterial indicators (0.427 ≤ r ≤ 0.590) and viral indicators (0.201 ≤ r ≤ 0.563). These results indicated that faecal and viral contamination could contribute to the numbers of total viruses and bacteria. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122144
Appears in Collections: 气候变化事实与影响
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作者单位: NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Recommended Citation:
Yang Y.,Gu X.,Te S.H.,et al. Occurrence and distribution of viruses and picoplankton in tropical freshwater bodies determined by flow cytometry[J]. Water Research,2019-01-01