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Microbial Impacts on Water Resources: From Contamination to Remediation
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Microbial Impacts on Water Resources: From Contamination to Remediation

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: closed (15 August 2016) | Viewed by 30196

Special Issue Editor

Dr. Robin Slawson

E-Mail Website
Guest Editor
Department of Biology, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
Interests: waterborne pathogens; antibiotic resistance; engineered wetlands; source water protection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue invites research papers focusing on relationships between microorganisms and global water resources from a variety of perspectives. There is an increasing demand for information related to microbial contamination of source waters, particularly with respect to their environmental survival and persistence. Anticipated topics include specific pathogen contamination of source waters, mechanisms of survival and persistence in aquatic environments, as well as microbial tolerance to treatment and disinfection strategies. In the ongoing protection of water supplies, environmentally friendly and lower cost alternatives are increasingly favoured. Potential topics include bioremediation of waste effluents prior to discharge into receiving water bodies, pathogen removals within buffer strip protection areas, as well as microbial community dynamics within wetlands and storm water retention areas. Research papers that broaden our understanding of relationships between aquatic microorganisms and plant and animal life associated with maintaining healthy aquatic ecosystems are also encouraged.

Robin Slawson
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microbial community
  • pathogen contamination
  • aquatic bioremediation
  • source water protection
  • wetlands

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Published Papers (4 papers)

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Research

2884 KiB  
Article
Effects of Environmental Factors on the Disinfection Performance of a Wastewater Stabilization Pond Operated in a Temperate Climate
by Lei Liu, Geof Hall and Pascale Champagne
Water 2016, 8(1), 5; https://doi.org/10.3390/w8010005 - 25 Dec 2015
Cited by 35 | Viewed by 8965
Abstract
Treatment in a wastewater stabilization pond (WSP) relies on natural purification processes, which can be sensitive to both location and climate. This study investigated the effects of three environmental factors, pH, dissolved oxygen (DO) and temperature, on disinfection efficiency in a WSP system [...] Read more.
Treatment in a wastewater stabilization pond (WSP) relies on natural purification processes, which can be sensitive to both location and climate. This study investigated the effects of three environmental factors, pH, dissolved oxygen (DO) and temperature, on disinfection efficiency in a WSP system consisting of three facultative cells, and operated in a temperate climate region, in Eastern Ontario, Canada. Indicator organism (Escherichia coli (E. coli)) removal in WSP systems is driven by a combination of different factors. Elevated pH and DO concentrations, which are attributed to the presence of algae, are important factors for effective disinfection. Therefore, the presence of algae in natural wastewater treatment systems can contribute appreciably to disinfection. Consequently, based on algal concentrations, removal efficiencies of pathogenic microorganisms during wastewater treatment over the course of a year can be highly variable, where higher removal efficiencies would be expected in summer and fall seasons. Full article
(This article belongs to the Special Issue Microbial Impacts on Water Resources: From Contamination to Remediation)
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1903 KiB  
Article
Effects of Seasonal Thermal Stratification on the Functional Diversity and Composition of the Microbial Community in a Drinking Water Reservoir
by Xiao Yang, Tinglin Huang and Haihan Zhang
Water 2015, 7(10), 5525-5546; https://doi.org/10.3390/w7105525 - 15 Oct 2015
Cited by 49 | Viewed by 8665
Abstract
The microbial communities within reservoir ecosystems are shaped by water quality and hydrological characteristics. However, there are few studies focused on the effects of thermal stratification on the bacterial community diversity in drinking water reservoirs. In this study, we collected water samples from [...] Read more.
The microbial communities within reservoir ecosystems are shaped by water quality and hydrological characteristics. However, there are few studies focused on the effects of thermal stratification on the bacterial community diversity in drinking water reservoirs. In this study, we collected water samples from the Jinpen Reservoir around the re-stratification period. To explore the functional diversity and bacterial community composition, we used the Biolog method and 16S rRNA-based 454 pyrosequencing combined with flow cytometry. The results indicated that stratification of the reservoir had great effects on temperature and oxygen profiles, and both the functional diversity and the composition of the bacterial community strongly reflected the significant vertical stratification in the reservoir. The results of the Biolog method showed a significantly higher utilization of carbon sources in the hypolimnion than in the epilimnion. The result of pyrosequencing also showed a significantly higher species diversity and richness in the hypolimnion than in the epilimnion with different dominant phylum. Redundancy analysis also indicated that the majority of environmental variables, especially pH and dissolved oxygen, played key roles in shaping bacterial community composition. Our study provides a better understanding of the functional diversity of bacterial communities, and the response of microorganisms to seasonal thermal stratification. Full article
(This article belongs to the Special Issue Microbial Impacts on Water Resources: From Contamination to Remediation)
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886 KiB  
Article
Microbiological Confinement of Two Adjacent Water Wells in Lake Karla Basin, Greece
by Konstantinos Ar. Kormas, Alexandra Meziti and Theodoti Papadimitriou
Water 2015, 7(10), 5272-5283; https://doi.org/10.3390/w7105272 - 30 Sep 2015
Viewed by 5279
Abstract
We analyzed the bacterial and archaeal community structure of two adjacent irrigation well waters of the Lake Karla Basin, Central Greece, in order to elucidate their connectivity or confinement by using 454 tag pyrosequencing of the 16S rRNA genes. Although considerable overlap was [...] Read more.
We analyzed the bacterial and archaeal community structure of two adjacent irrigation well waters of the Lake Karla Basin, Central Greece, in order to elucidate their connectivity or confinement by using 454 tag pyrosequencing of the 16S rRNA genes. Although considerable overlap was found at the phylum/high taxonomic level, and also at the operational taxonomic units (OTU) level, the dominant, and most likely active, prokaryotes represented by these OTUs were very different between the two wells. As expected, we found higher bacterial species richness compared to that of archaeal, and this renders Bacteria better for the study of connectivity or confinement of water wells. Some of the taxonomic groups found are amongst those found typically in the terrestrial subsurface and also those that have been recently described, enhancing the importance of the subsurface for expanding our knowledge on microbial diversity. The majority of the archaeal and several of the bacterial OTUs, including the most dominant ones in each well, were related to marine or saline environments, indicating the previously suggested persistence of fertilizer residuals in the basin’s soils. Full article
(This article belongs to the Special Issue Microbial Impacts on Water Resources: From Contamination to Remediation)
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781 KiB  
Article
Impact of Rural Domestic Wastewater Irrigation on the Physicochemical and Microbiological Properties of Pakchoi and Soil
by Bo Yang, Xiao Kong, Bingjian Cui, Decai Jin, Ye Deng, Xuliang Zhuang, Guoqiang Zhuang and Zhihui Bai
Water 2015, 7(5), 1825-1839; https://doi.org/10.3390/w7051825 - 27 Apr 2015
Cited by 17 | Viewed by 6554
Abstract
Great attention has been paid to the potential of wastewater irrigation as a sustainable water source, particularly due to water scarcity and water pollution issues. However, few studies have focused on its adverse effects and on the health risks it may pose. In [...] Read more.
Great attention has been paid to the potential of wastewater irrigation as a sustainable water source, particularly due to water scarcity and water pollution issues. However, few studies have focused on its adverse effects and on the health risks it may pose. In this study, the physicochemical properties of soils and plants irrigated with rural domestic wastewater and associated microbiological risks were investigated. The results showed that sewage irrigation could increase the production of vegetables and improve soil fertility. While the nitrate content of plants increased significantly, pathogens on plants and in soils increased after irrigation with raw wastewater. In particular, there was a wide range of pathogenic bacteria in the phyllosphere, which may indicate risks if contaminated vegetables are consumed directly. Treated wastewater irrigation was not significantly different from controls, which were irrigated by tap water; consequently, it can be used as an alternative water resource for agricultural irrigation. The presence of a wide spectrum pathogens in wastewater shows the necessity of long-term monitoring and further evaluation. Full article
(This article belongs to the Special Issue Microbial Impacts on Water Resources: From Contamination to Remediation)
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