The efficiency of post-reform water utilities in Mexico

Adams, Alejandro Salazar

doi:10.1016/j.jup.2020.101153

Cited by 18 publications

(6 citation statements)

References 43 publications

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“…Statistical analysis was performed by a Student’s t test in the SPSS software v.20. The niche breadth and generalist/specialist species were calculated based on the previous descriptions. − The generalist species can thrive in a wide range of environmental conditions and utilize a variety of different resources. However, specialist species are able to only thrive in a limited range of environmental conditions or have a narrow diet. , The interactions of ″microbe–microbe″ and ″environment–microbe″ were analyzed using a co-occurrence network. , A connected link denotes a high and significant Spearman’s correlation between variables.…”

Section: Methodsmentioning

confidence: 99%

Primary Succession Changes the Composition and Functioning of the Protist Community on Mine Tailings, Especially Phototrophic Protists

Gao

Sun

et al. 2022

ACS Environ. Au

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Primary succession in mine tailings is a prerequisite for tailing vegetation. Microorganisms, including bacteria, fungi, and protists, play an important role in this process in the driving force for improving the nutritional status. Compared to bacteria and fungi, protist populations have rarely been investigated regarding their role in mine tailings, especially for those inhabiting tailings associated with primary succession. Protists are the primary consumers of fungi and bacteria, and their predatory actions promote the release of nutrients immobilized in the microbial biomass, as well as the uptake and turnover of nutrients, affecting the functions of the wider ecosystems. In this study, three different types of mine tailings associated with three successional stages (original tailings, biological crusts, and Miscanthus sinensis grasslands) were selected to characterize the protistan community diversity, structure, and function during primary succession. Some members classified as consumers dominated the network of microbial communities in the tailings, especially in the original bare land tailings. The keystone phototrophs of Chlorophyceae and Trebouxiophyceae showed the highest relative abundance in the biological crusts and grassland rhizosphere, respectively. In addition, the co-occurrences between protist and bacterial taxa demonstrated that the proportion of protistan phototrophs gradually increased during primary succession. Further, the metagenomic analysis of protistan metabolic potential showed that abundances of many functional genes associated with photosynthesis increased during the primary succession of tailings. Overall, these results suggest that the primary succession of mine tailings drives the changes observed in the protistan community, and in turn, the protistan phototrophs facilitate the primary succession of tailings. This research offers an initial insight into the changes in biodiversity, structure, and function of the protistan community during ecological succession on tailings.

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Section: Methodsmentioning

confidence: 99%

Primary Succession Changes the Composition and Functioning of the Protist Community on Mine Tailings, Especially Phototrophic Protists

Gao

Sun

et al. 2022

ACS Environ. Au

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“…We then compared the microbial community composition using PERMANOVA in the vegan package ( 61 ) with sample times (1 to 9) and the timing around dormancy (before, during, after) and active/present microbiome as factors. To understand the differences in community composition across time points and types of sample, we used pairwise comparisons with the EcolUtils package ( 63 ). Coral and water microbial communities were visualized on an NMDS plot.…”

Section: Methodsmentioning

confidence: 99%

Reshuffling of the Coral Microbiome during Dormancy

Brown

Sharp

Apprill

2022

Appl Environ Microbiol

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Using a high-resolution sampling time series, this study is the first to demonstrate a persistent microbial community shift with quiescence (dormancy) in a marine organism, the temperate coral Astrangia poculata . Furthermore, during this period of community turnover, there is a shedding of putative pathogens and copiotrophs and an enhancement of the ammonia-oxidizing bacteria ( Nitrosococcales ) and archaea (“ Candidatus Nitrosopumilus”).

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“…Ownership matters, as communities with municipally owned utilities appeared more inclined to protect residents from water service shutoffs and engage in water resource management. Salazar-Adams (2021) revealed that privately managed utilities appear to be more efficient than publicly managed ones in developing countries.…”

Section: Introductionmentioning

confidence: 99%

Impact of COVID-19 on water sector projects and practices

2021

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The COVID-19 pandemic has negatively affected world economies. The water industry was adversely affected, with unprecedented slow down and changes to ways of working. However, the pandemic also accelerated positive digital transformation. A qualitative research approach was adopted to analyze data collected from 12 interviewees representing six water sector organizations. The paper provides insight into the impact of COVID-19 on the delivery of water sector projects and how organizational practices have adapted from business as usual.

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The efficiency of post-reform water utilities in Mexico

Cited by 18 publications

References 43 publications

Primary Succession Changes the Composition and Functioning of the Protist Community on Mine Tailings, Especially Phototrophic Protists

Primary Succession Changes the Composition and Functioning of the Protist Community on Mine Tailings, Especially Phototrophic Protists

Reshuffling of the Coral Microbiome during Dormancy

Impact of COVID-19 on water sector projects and practices

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