2009
DOI: 10.1590/s1517-83822009000400017
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Virioplankton Abundance in Trophic Gradients of an Upwelling Field

Abstract: This work correlates time series of biological and physical variables to the marine viruses across trophic gradients within Arraial do Cabo upwelling system, Southeast of Brazil. The objective is to investigate the major controlling factors of virioplankton dynamics among different water masses. It was used an in situ and ex situ flow cytometry for accessing the plankton community. Viruses were highly correlated to bacteria and phytoplankton, but although the lack of direct correlation with physicals, upwellin… Show more

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Cited by 12 publications
(10 citation statements)
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References 44 publications
(20 reference statements)
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“…These total abundance values of viruses enumerated in groundwater were similar to results obtained from other groundwater sites (Kyle et al, 2008; Roudnew et al, 2012). Virus abundance in this shallow aquifer was strongly correlated to cell abundance (ρ = 0.73, p < 0.001) (Figure 2C) and is consistent with prior studies comparing virus and cell abundance in aquatic and sedimentary environments including lakes (Maranger and Bird, 1995; Bettarel et al, 2006; de Araújo and Godinho, 2009; Barros et al, 2010), marine waters (Alonso et al, 2001; Pereira et al, 2009), marine surface sediments (Danovaro and Serresi, 2000), marine subsurface sediment (Bird et al, 2001; Engelhardt et al, 2014), and deep granitic groundwater (Kyle et al, 2008). The virus-to-microbial cell ratio (VMR) in this shallow aquifer ranged from 1.1 to 8.1 and averaged 3.0 ± 1.6 (mean ± S.D., n = 20; Figures 1C,F).…”
Section: Resultssupporting
confidence: 89%
“…These total abundance values of viruses enumerated in groundwater were similar to results obtained from other groundwater sites (Kyle et al, 2008; Roudnew et al, 2012). Virus abundance in this shallow aquifer was strongly correlated to cell abundance (ρ = 0.73, p < 0.001) (Figure 2C) and is consistent with prior studies comparing virus and cell abundance in aquatic and sedimentary environments including lakes (Maranger and Bird, 1995; Bettarel et al, 2006; de Araújo and Godinho, 2009; Barros et al, 2010), marine waters (Alonso et al, 2001; Pereira et al, 2009), marine surface sediments (Danovaro and Serresi, 2000), marine subsurface sediment (Bird et al, 2001; Engelhardt et al, 2014), and deep granitic groundwater (Kyle et al, 2008). The virus-to-microbial cell ratio (VMR) in this shallow aquifer ranged from 1.1 to 8.1 and averaged 3.0 ± 1.6 (mean ± S.D., n = 20; Figures 1C,F).…”
Section: Resultssupporting
confidence: 89%
“…As previously reported by [7], the highest mean value of virioplankton occurred in SACW while the highest mean values of prokaryotes, phytoplankton and meroplankton larvae occurred in the mixing of coastal and tropical waters. The cold water of SACW showed the smallest Het Prok/Phyto ratio and the highest virus/bacterial ratio (VBR) indicating a great viral activity.…”
Section: Resultssupporting
confidence: 84%
“…Many reports have described them along several environments [4][5][6][7]. The use of transmission electron microscopy (TEM) for aquatic virus investigation [8] was followed by the epifluorescence microscopy (EFM) along with the development of a variety of highly fluorescent nucleic acid dyes [9].…”
Section: Introductionmentioning
confidence: 99%
“…Heterotrophic bacterioplankton is important in inducing primary production, recycling compounds produced by autotrophic organisms and consuming organic material (CARVALHO; YOSHINAGA et al, 2008;PEREIRA et al, 2009b). Heterotrophic bacterial activity did not change during upwelling (spring/summer) and subsidence (autumn/winter) seasons.…”
Section: Physical-biological Interactions: Ecological Consequences Ofmentioning
confidence: 99%