Transport of bacteria and bacteriophages in irrigated effluent into and through an alluvial gravel aquifer

Sinton, L. W.; Finlay, R. K.; Pang, Liping; Scott, D. M.

doi:10.1007/bf02128648

Cited by 75 publications

(69 citation statements)

References 43 publications

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“…Large numbers, notably crustaceans up to 20 mm long, occurred in these wells at Templeton, with numbers more than ten times higher immediately downstream of the effluent disposal area, compared with upstream or further downstream (Sinton 1984;Scarsbrook and Fenwick 2003). The data are partly confounded by differences in well casing slot areas and sizes (Sinton et al 1997) and limited replication of wells yet abundance tended to decrease with increasing distance away from the disposal area (Sinton 1984;Scarsbrook and Fenwick 2003). Additionally, the guts of more than half (n = 100) of all individuals of the two dominant crustaceans tested positive for presumptive coliforms and 12% of these had coliform bacteria in their guts (Sinton 1984).…”

Section: Groundwater Amphipodsmentioning

confidence: 94%

“…Some microbes reached the aquifer 30 m down-gradient of the disposal site within 10 h of irrigation. Highest concentrations of the tracers reached this well after 15 h, and persisted for 80 h (Sinton et al 1997(Sinton et al , 2005. Horizontal transport of these tracers indicated groundwater velocities of up to 8 m/h (Martin and Noonan 1977).…”

Section: Groundwater Amphipodsmentioning

confidence: 98%

“…Using bacteria and bacteriophages as tracers, effluent and its associated POM and DOC was found to percolate from the ground surface through highly porous, poorly sorted alluvial gravels into the aquifer some 12 m below the ground surface (Sinton et al 1997(Sinton et al , 2005. Some microbes reached the aquifer 30 m down-gradient of the disposal site within 10 h of irrigation.…”

Section: Groundwater Amphipodsmentioning

confidence: 99%

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Biodiversity, functional roles and ecosystem services of groundwater invertebrates

Boulton

Fenwick

Hancock

et al. 2008

Invert. Systematics

186

135

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Abstract. Recent surveys of groundwater invertebrates (stygofauna) worldwide are yielding rich troves of biodiversity, with significant implications for invertebrate systematists and phylogeneticists as well as ecologists and groundwater managers. What is the ecological significance of this high biodiversity of invertebrates in some aquifers? How might it influence groundwater ecosystem services such as water purification or bioremediation? In terrestrial ecosystems, biodiversity is typically positively correlated with rates of ecosystem functions beneficial to humans (e.g. crop pollination). However, the links between biodiversity, ecosystem function, and ecosystem services in groundwater are unknown. In some aquifers, feeding, movement and excretion by diverse assemblages of stygofauna potentially enhance groundwater ecosystem services such as water purification, bioremediation and water infiltration. Further, as specific taxa apparently play 'keystone' roles in facilitating ecosystem services, declines in abundance or even their extinction have serious repercussions. One way to assess the functional significance of biodiversity is to identify 'ecosystem service providers', characterise their functional relationships, determine how service provision is affected by community structure and environmental variables, and measure the spatio-temporal scales over which these operate. Examples from Australian and New Zealand alluvial aquifers reveal knowledge gaps in understanding the functional importance of most stygofauna, hampering effective protection of currently undervalued groundwater ecosystem services.

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Section: Groundwater Amphipodsmentioning

confidence: 94%

Section: Groundwater Amphipodsmentioning

confidence: 98%

Section: Groundwater Amphipodsmentioning

confidence: 99%

See 1 more Smart Citation

Biodiversity, functional roles and ecosystem services of groundwater invertebrates

Boulton

Fenwick

Hancock

et al. 2008

Invert. Systematics

186

135

View full text Add to dashboard Cite

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“…Sinton et al reported that F-specific RNA phages showed greater attenuation than somatic coliphages in an alluvial gravel aquifer [120].…”

Section: Resistance To Treatmentmentioning

confidence: 99%

Coliphages as Model Organisms in the Characterization and Management of Water Resources

Torroella

Gutiérrez

Blanch

et al. 2016

Water

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Two groups of bacteriophages that infect Escherichia coli, somatic and F-specific coliphages, have been used in academia as both fecal and viral indicators for many years. Regulatory authorities in different parts of the world are beginning to consider coliphages as indicators of water quality in a range of settings. However, issues such as their potential replication in natural water environments, the cumbersome detection and enumeration methods, a lack of definition concerning which of the two groups should be included in future regulations, and the lack of a clear correlation between coliphages and human viruses and health risks in different water settings remain controversial. This review attempts to shed some light on these contentious issues. The conclusions are that: 1) supposing that they can replicate in some natural water settings, the contribution of coliphages replicated outside the gut will not affect the numbers contributed by fecal pollution and detected by strains recommended for standardized methods; 2) there are easy, fast, and cost-effective methods that can be used in routine laboratories after a little training; 3) perhaps the best option is to determine both groups in a single step; and 4) the low correlation of coliphages with human viruses and health risks is no worse than the correlation between different human viruses.

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“…Sinton et al [115] introduced bacteria, bacteriophage, and rhodamine WT dye into a well and observed transport to wells as far as 400 m down-gradient. Groundwater flow rates in this aquifer are rapid, as high as 86 m/day.…”

Section: Previous Field-scale Bacterial Transport Experimentsmentioning

confidence: 99%

Processes in microbial transport in the natural subsurface

Ginn

Wood

Nelson

et al. 2002

Advances in Water Resources

265

131

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Transport of bacteria and bacteriophages in irrigated effluent into and through an alluvial gravel aquifer

Cited by 75 publications

References 43 publications

Biodiversity, functional roles and ecosystem services of groundwater invertebrates

Biodiversity, functional roles and ecosystem services of groundwater invertebrates

Coliphages as Model Organisms in the Characterization and Management of Water Resources

Processes in microbial transport in the natural subsurface

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