ORCID Profile
0000-0002-1193-5739
Current Organisations
SA Water
,
Flinders University
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Publisher: Elsevier BV
Date: 03-2013
Publisher: Japanese Society of Microbial Ecology
Date: 2018
Publisher: Oxford University Press (OUP)
Date: 10-08-2018
Abstract: Groundwater is increasingly used globally for domestic, industrial and agricultural production. While many studies have focused on groundwater as a resource, the erse ecosystems within are often ignored. Here, we assess 54 Southern South Australian groundwater microbial communities from the populated part of the state to assess their status and dynamics in isolated groundwater systems. We observed a strong site-to-site in iduality in groundwater bacterial communities, likely due to the isolated nature of groundwater bodies leading to unique ecosystems. Rank abundance analysis indicates bacterial ersity is maintained even at low abundances and that the distribution fits classical ecological models for strong competition in resource-limited environments. Combined, our data indicates that despite overrepresentation of pollutant-associated bacterial orders in and around the Adelaide metropolitan area, microbial communities remain erse and show little evidence of converging on a common pollutant-effected community.
Publisher: Public Library of Science (PLoS)
Date: 12-05-2016
Publisher: Oxford University Press (OUP)
Date: 17-07-2019
Abstract: Subsurface environments hold the largest reservoir of microbes in the biosphere. They play essential roles in transforming nutrients, degrading contaminants and recycling organic matter. Here, we propose a previously unrecognised fundamental microbial process that influences aquifer bioremediation dynamics and that applies to all microbial communities. In contrast to previous models, our proposed Piggyback-the-Persistent (PtP) mechanism occurs when viruses become more dominated by those exhibiting temperate rather than lytic lifestyles driven by persistent chemicals (in our case chlorinated-hydrocarbon pollutants) that provide long-term carbon sources and that refocus the aquifer carbon cycle, thus altering the microbial community. In this ultra-oligotrophic system, the virus:microbial ratio (VMR) ranges from below the detection limit of 0.0001 to 0.6, well below the common aquatic range of 3–10. Shortest-average-path network analysis revealed VMR and trichlorethene (TCE) as nodes through which ecosystem information and biomass most efficiently pass. Novel network rearrangement revealed a hierarchy of Kill-the-Winner (KtW), Piggyback-the-Winner (PtW) and PtP nodes. We propose that KtW, PtW and PtP occur simultaneously as competing strategies, with their relative importance depending on conditions at a particular time and location with unusual nutrient sources, such as TCE, appearing to contribute to a shift in this balance between viral mechanisms.
Publisher: Public Library of Science (PLoS)
Date: 17-06-2015
Publisher: Cold Spring Harbor Laboratory
Date: 26-06-2022
DOI: 10.1101/2022.06.23.497420
Abstract: Flow cytometry is an established method for the detection and enumeration of viruses. However, the technique is unable to target specific viral species. Here, we present OligoFlow, a novel method for the rapid detection and enumeration of viruses by incorporating flow cytometry with species specific oligonucleotide hybridization. Using Ostried herpesvirus and dengue virus as model organisms, we demonstrate high-level detection and specificity. Our results represent a significant advancement in viral flow cytometry, opening the possibilities for the rapid identification of viruses in time critical settings.
Publisher: Wiley
Date: 09-08-2016
DOI: 10.1002/MBO3.392
Abstract: Viral communities are important for ecosystem function as they are involved in critical biogeochemical cycles and controlling host abundance. This study investigates riverine viral communities around a small rural town that influences local water inputs. Myoviridae, Siphoviridae, Phycodnaviridae, Mimiviridae, Herpesviridae, and Podoviridae were the most abundant families. Viral species upstream and downstream of the town were similar, with Synechoccocus phage , salinus , Prochlorococcus phage , Mimivirus A, and Human herpes 6A virus most abundant, contributing to 4.9–38.2% of average abundance within the metagenomic profiles, with Synechococcus and Prochlorococcus present in metagenomes as the expected hosts for the phage. Overall, the majority of abundant viral species were or were most similar to those of marine origin. At over 60 km to the river mouth, the presence of marine communities provides some support for the Baas‐Becking hypothesis “ everything is everywhere , but, the environment selects .” We conclude marine microbial species may occur more frequently in freshwater systems than previously assumed, and hence may play important roles in some freshwater ecosystems within tens to a hundred kilometers from the sea.
Publisher: Springer Science and Business Media LLC
Date: 06-09-2016
DOI: 10.1038/SREP32738
Abstract: More than 97% of the world’s freshwater reserves are found in aquifers, making groundwater one of the most important resources on the planet. Prokaryotic communities in groundwater underpin the turnover of energy and matter while also maintaining groundwater purity. Thus, knowledge of microbial transport in the subsurface is crucial for maintaining groundwater health. Here, we describe for the first time the importance of stygofauna as vectors for prokaryotes. The “hitch-hiking” prokaryotes associated with stygofauna may be up to 5 orders of magnitude higher in abundance and transported up to 34× faster than bulk groundwater flow. We also demonstrate that prokaryotic ersity associated with stygofauna may be higher than that of the surrounding groundwater. Stygofauna are a newly recognized prokaryotic niche in groundwater ecosystems that have the potential to transport remediating, water purifying and pathogenic prokaryotes. Therefore, stygofauna may influence ecosystem dynamics and health at a microbial level, and at a larger scale could be a new source of prokaryotic ersity in groundwater ecosystems.
Publisher: IWA Publishing
Date: 11-08-2020
DOI: 10.2166/WST.2020.379
Abstract: High rate algal ponds (HRAPs) are shallow, mixed systems for wastewater treatment, which use sunlight exposure for disinfection. Little is known regarding the relationships between the bacteria and viruses within HRAP systems. Uniquely, flow cytometry permits the rapid identification of bacterial and viral populations in wastewater s les, separating populations based on genome and particle size. Treated wastewater s les were collected from an HRAP at Kingston on Murray, South Australia. Flow cytometry analysis detected bacterial populations and discriminated virus-like particles (VLP) and large VLP (LVLP). Rapid, short term, fluctuations in the abundance of all three populations were observed. Changes in the abundance of these populations was compared wastewater composition was used as metadata for the comparisons. Linear regression determined relationships in abundances between bacteria and LVLP (R2 0.2985) LVLP and VLP (R2 0.5829) and bacteria and VLP (R2 0.5778) all with p-values of & .001. Bacterial, LVLP and VLP abundance positively correlated with each other, indicating potential microbial interactions. Overall, the results suggest a parasitic relationship was occurring and driving the abundances of bacteria and viruses within the system.
Publisher: Public Library of Science (PLoS)
Date: 19-01-2016
Publisher: CSIRO Publishing
Date: 2020
DOI: 10.1071/MF19399
Abstract: The effect of the Yellow Sea Warm Current (YSWC) on virio- and bacterioplankton communities in the Bohai Sea is unknown. In this study, the composition and dynamic changes of virio- and bacterioplankton at the entrance of the Bohai Sea were measured to determine the influence of the YSWC on those communities and vice versa. In the Bohai Strait, there were east to west gradients of water chemistry and hydrology. The turbulent mixing between the deep north-western ‘warm’ current, which is 9°C, and the cold, nutrient-rich Bohai Sea water at 7–8°C appears to stimulate the abundance of both viruses and heterotrophic bacteria, with numbers at the junction of ‘warm’ and cold water being almost 10-fold greater than in the low-thermohaline areas, and peaking where the temperature is the highest. The average viral and bacterial abundances in the north-eastern area are much higher than in the south-western area. It proved that the YSWC entered the Bohai Sea with poor biomass and exited with rich biomass, which, in turn, enriches the Yellow Sea microbial loop. Our results showed the dramatic effect of temperature rise and increasing eutrophication on microbial abundance and marine microbial communities.
Publisher: Informa UK Limited
Date: 2020
Publisher: Cold Spring Harbor Laboratory
Date: 05-10-2021
DOI: 10.1101/2021.10.04.459351
Abstract: A universal scaling relationship exists between organism abundance and body size 1,2 . Within ocean habitats this relationship deviates from that generally observed in terrestrial systems 2–4 , where marine macro-fauna display steeper size-abundance scaling than expected. This is indicative of a fundamental shift in food-web organization, yet a conclusive mechanism for this pattern has remained elusive. We demonstrate that while fishing has partially contributed to the reduced abundance of larger organisms, a larger effect comes from ocean turbulence: the energetic cost of movement within a turbulent environment induces additional biomass losses among the nekton. These results identify turbulence as a novel mechanism governing the marine size-abundance distribution, highlighting the complex interplay of biophysical forces that must be considered alongside anthropogenic impacts in processes governing marine ecosystems.
Publisher: Public Library of Science (PLoS)
Date: 22-05-2018
Publisher: Elsevier BV
Date: 05-2010
Publisher: Wiley
Date: 10-11-2020
DOI: 10.1002/CYTO.A.24258
Publisher: Public Library of Science (PLoS)
Date: 24-07-2014
Publisher: Wiley
Date: 11-2021
DOI: 10.14814/PHY2.15100
Publisher: Oxford University Press (OUP)
Date: 31-01-2016
Publisher: Springer Science and Business Media LLC
Date: 06-2020
Publisher: Inter-Research Science Center
Date: 12-08-2016
DOI: 10.3354/AME01788
Publisher: Elsevier BV
Date: 2012
Publisher: Oxford University Press (OUP)
Date: 04-07-2019
Abstract: Bacteria are ubiquitous on the Earth, and many use chemotaxis to colonise favourable microenvironments. The colonisation process is continuous, where animals, plants, protists, viruses and chemical and physical factors frequently remove bacteria from wide volume ranges. Colonisation processes are poorly understood in natural communities. Here, we investigated niche partitioning during colonisation in aquatic microbial communities using bands of bacterial chemotaxis in petri dishes from mixed-species communities. The community partitioned into loiterers, primary and secondary colonisers, each having distinct abundances and taxonomy. Within marine s les, Shewanella dominated the primary colonisers, whilst Enterobacteriaceae dominated this group within the freshwater s les. Whether the success of these specific groups translates to what occurs within natural communities is uncertain, but here we show these taxa have the capacity to colonise new, unexplored environments. A strong negative association existed between the primary colonisers and viral abundance, suggesting that successful colonisers simultaneously move toward areas of heightened resources, which correlated with lower virus-like particles. Here, we show that microbial communities constantly sort themselves into distinct taxonomic groups as they move into new environments. This sorting during colonisation may be fundamental to microbial ecology, industry, technology, and disease development by setting the initial conditions that determine the winners as a community develops.
No related grants have been discovered for James Paterson.