Composition and distribution of microbial communities in natural river wetlands and corresponding constructed wetlands

Cao, Qingqing; Wang, Hui; Chen, Jiayao; Wang, Renqing; Liu, Jian

doi:10.1016/j.ecoleng.2016.10.063

Cited by 81 publications

(45 citation statements)

References 47 publications

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“…Significant microbial orders observed on toads during various stages of development are dominant microbes observed in wetlands, freshwater lake epilimnion, and within rhizosphere and root exudates (Cao, Wang, Chen, Wang, & Liu, 2017;Newton, Jones, Eiler, McMahon, & Bertilsson, 2011;el Zahar Haichar et al, 2008) . Interestingly, our data suggest host-associated microbial communities significantly change mirroring host development.…”

Section: Discussionmentioning

confidence: 99%

Host‐associated bacterial community succession during amphibian development

et al. 2018

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Amphibians undergo significant developmental changes during their life cycle, as they typically move from a primarily aquatic environment to a more terrestrial one. Amphibian skin is a mucosal tissue that assembles communities of symbiotic microbiota. However, it is currently not well understood as to where amphibians acquire their skin symbionts, and whether the sources of microbial symbionts change throughout development. In this study, we utilized data collected from four wild boreal toad populations (Anaxyrus boreas); specifically, we sampled the skin bacterial communities during toad development, including eggs, tadpoles, subadults and adults as well as environmental sources of bacteria (water, aquatic sediment and soil). Using 16S rRNA marker gene profiling coupled with SourceTracker, we show that while primary environmental sources remained constant throughout the life cycle, secondary sources of boreal toad symbionts significantly changed with development. We found that toad skin communities changed predictably across development and that two developmental disturbance events (egg hatching and metamorphosis) dictated major changes. Toad skin communities assembled to alternative stable states following each of these developmental disturbances. Using the predicted average rRNA operon copy number of the communities at each life stage, we showed how the skin bacterial communities undergo a successional pattern whereby "fast-growing" (copiotroph) generalist bacteria dominate first before "slow-growing" (oligotroph) specialized bacteria take over. Our study highlights how host-associated bacterial community assembly is tightly coupled to host development and that host-associated communities demonstrate successional patterns akin to those observed in free-living bacteria as well as macrofaunal communities.

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Section: Discussionmentioning

confidence: 99%

Host‐associated bacterial community succession during amphibian development

et al. 2018

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“…Microbial communities and populations were cited and analyzed to explain the distribution of C fractions 88 .…”

Section: Methodsmentioning

confidence: 99%

Factors affecting distribution patterns of organic carbon in sediments at regional and national scales in China

Cao

Wang

Zhang

et al. 2017

Sci Rep

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Wetlands are an important carbon reservoir pool in terrestrial ecosystems. Light fraction organic carbon (LFOC), heavy fraction organic carbon (HFOC), and dissolved organic carbon (DOC) were fractionated in sediment samples from the four wetlands (ZR: Zhaoniu River; ZRCW: Zhaoniu River Constructed Wetland; XR: Xinxue River; XRCW: Xinxue River Constructed Wetland). Organic carbon (OC) from rivers and coasts of China were retrieved and statistically analyzed. At regional scale, HFOC stably dominates the deposition of OC (95.4%), whereas DOC and LFOC in ZR is significantly higher than in ZRCW. Concentration of DOC is significantly higher in XRCW (30.37 mg/l) than that in XR (13.59 mg/l). DOC and HFOC notably distinguish between two sampling campaigns, and the deposition of carbon fractions are limited by low nitrogen input. At the national scale, OC attains the maximum of 2.29% at precipitation of 800 mm. OC has no significant difference among the three climate zones but significantly higher in river sediments than in coasts. Coastal OC increases from Bohai Sea (0.52%) to South Sea (0.70%) with a decrease in latitude. This study summarizes the factors affecting organic carbon storage in regional and national scale, and have constructive implications for carbon assessment, modelling, and management.

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“…Arcobacter species have been shown to degrade organic compounds with nitrate as electron acceptor (Roalkvam et al, 2015). Furthermore, the families Burkholderiaceae and Rhodocyclaceae (C39 and Dechloromonas, order Betaproteobacteriales) were described with denitrifying activity (Cao et al, 2017) and may reduce nitrate and nitrite at K8. The remaining nitrate after this fractionation may be characterized by an elevated 15 N signature and may have contributed to an increment of δ 15 N of POM at the marine stations.…”

Section: Sewage Impact: Bacterial Diversity Presumptive Functions Anmentioning

confidence: 99%

“…The coastline of the Bengal delta is largely influenced by monsoon rainfalls, recurrent climatic disasters and pollutants. Among the diverse groups of bacteria existing in coastal waters, some can respond quickly to changing environmental conditions and are reliable indicators of hydrological changes and water pollution (Cao et al, 2017;Kegler et al, 2017). Sewage impacts on human and ecosystem health by eutrophication, spread of waterborne diseases, and as a source of heavy metals and persistent organic pollutants (reviewed by Schwarzenbach et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Vibrio and Bacterial Communities Across a Pollution Gradient in the Bay of Bengal: Unraveling Their Biogeochemical Drivers

et al. 2020

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The highly populated coasts of the Bay of Bengal are particularly vulnerable to water-borne diseases, pollution and climatic extremes. The environmental factors behind bacterial community composition and Vibrio distribution were investigated in an estuarine system of a cholera-endemic region in the coastline of Bangladesh. Higher temperatures and sewage pollution were important drivers of the abundance of toxigenic Vibrio cholerae. A closer relation between non-culturable Vibrio and particulate organic matter (POM) was inferred during the post-monsoon. The distribution of operational taxonomic units (OTUs) of Vibrio genus was likely driven by salinity and temperature. The resuspension of sediments increased Vibrio abundance and organic nutrient concentrations. The δ 13 C dynamic in POM followed an increasing gradient from freshwater to marine stations; nevertheless, it was not a marker of sewage pollution. Bacteroidales and culturable coliforms were reliable indicators of untreated wastewater during pre and post-monsoon seasons. The presumptive incorporation of depletedammonium derived from ammonification processes under the hypoxic conditions, by some microorganisms such as Cloacibacterium and particularly by Arcobacter nearby the sewage discharge, contributed to the drastic 15 N depletion in the POM. The likely capacity of extracellular polymeric substances production of these taxa may facilitate the colonization of POM from anthropogenic origin and may signify important properties for wastewater bioremediation. Genera of potential pathogens other than Vibrio associated with sewage pollution were Acinetobacter, Aeromonas, Arcobacter, and Bergeyella.

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Composition and distribution of microbial communities in natural river wetlands and corresponding constructed wetlands

Cited by 81 publications

References 47 publications

Host‐associated bacterial community succession during amphibian development

Host‐associated bacterial community succession during amphibian development

Factors affecting distribution patterns of organic carbon in sediments at regional and national scales in China

Vibrio and Bacterial Communities Across a Pollution Gradient in the Bay of Bengal: Unraveling Their Biogeochemical Drivers

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