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Contaminants and Microbes in Marine, Lake and River Ecosystems under...
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Contaminants and Microbes in Marine, Lake and River Ecosystems under a Climate Change Scenario

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water and Climate Change".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7579

Special Issue Editors

Dr. Nicoletta Ademollo

E-Mail Website
Guest Editor
Institute of Polar Sciences—National Research Council (ISP-CNR), 00010 Rome, Italy
Interests: persistent organic pollutants (POPs); emerging compounds; ecotoxicology; environmental fate of microorganic pollutants; bioaccumulation/biomagnification; polar and temperate regions
Dr. Jasmin Rauseo

E-Mail Website
Guest Editor
Institute of Polar Sciences—National Research Council (ISP-CNR), 00010 Rome, Italy
Interests: microbial ecology; biodegradation; phytodegradation; microcosm studies; antibiotics; antibiotic-resistant genes (ARGs); organic pollutants; environmental contamination
Special Issues, Collections and Topics in MDPI journals
Dr. Luisa Patrolecco

E-Mail Website
Guest Editor
National Research Council - Institute of Polar Sciences (CNR-ISP), Rome, Italy
Interests: POPs; emerging contaminants; analytical chemistry; persistence of contaminants; polar ecosystems
Special Issues, Collections and Topics in MDPI journals
Dr. Francesca Spataro

E-Mail Website
Guest Editor
National Research Council - Institute of Polar Sciences (CNR-ISP), Rome, Italy
Interests: pharmaceutical; personal care products; abiotic compartments; bioaccumulation; development of analytical methods
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the last decade, the attention of the scientific world has been focused on new classes of xenobiotics, the so-called “emerging contaminants” (ECs). These compounds belong to chemicals commonly used worldwide, such as pharmaceuticals, hormones, components of personal care products, flame-retardants, industrial additives, and nanomaterials. Several scientific studies have reported the ubiquitous occurrence of ECs in aquatic ecosystems and their potential undesirable ecological effects. Although EU policy attempts to protect aquatic ecosystems, actual legislation has not still defined environmental quality standards (EQSs) for many of these chemicals. Climate-change-driven increases in contaminant spread to the aquatic environment will lead to bioaccumulation and trophic web biomagnification.

Moreover, the role of the microbial community in transferring pollutants from abiotic to biotic levels is still mostly unknown, despite their key role in aquatic ecology and response to global changes. In fact, microorganisms are particularly susceptible to climate change and are considered sentinels of environmental perturbations and pioneers in climate simulations. Therefore, changes in microbial communities are a precursor to modifications in the health and viability of the environment as a whole.

Aquatic ecosystems, apart from their bacterial and algal populations, contain fungal, protozoan, and viral populations, which interact and contribute to the functioning of the food web. Therefore, new research efforts are aimed at improving our knowledge of the overall aquatic ecosystem responses to pollution occurrence, food web accumulation, and effects under a climate change scenario. In accordance with these ideas, this Special Issue entitled “Contaminants and Microbes in Marine, Lake, and River Ecosystems under a Climate Change Scenario” aims to present new research to advance our knowledge on all the aspects related to the proposed subject. Specifically, the topics of interest include but are not restricted to:

  • Emerging and legacy pollutant analyses: occurrence and distribution of selected contaminants in water column and sediment;
  • The role of the microbial community in transferring pollutants to higher trophic levels: to elucidate drivers and followers in this process and identify key-species for contaminant turn-over and accumulation;
  • Dynamics of natural microbial communities: to distinguish microbial community structure and function spatial and temporal changes;
  • Dynamics of contamination in polar and temperate aquatic ecosystems.

Dr. Nicoletta Ademollo
Dr. Jasmin Rauseo
Dr. Luisa Patrolecco
Dr. Francesca Spataro
Guest Editors

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

  • water ecosystems
  • emerging organic compounds
  • legacy POPs
  • environmental contamination
  • abiotic and biotic processes
  • microbial communities
  • climate change

Published Papers (3 papers)

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Research

11 pages, 938 KiB  
Article
Transcriptome Analysis of the Toxic Effects of Amisulbrom and Isoflucypram on Zebrafish (Danio rerio) Larvae
by Peng Xiao, Wenhua Li, Jinfang Lu and He Zhang
Water 2022, 14(2), 272; https://doi.org/10.3390/w14020272 - 17 Jan 2022
Cited by 2 | Viewed by 2061
Abstract
Fungicides are frequently detected in the water bodies, however, the adverse effects of these fungicides on aquatic lives remain limited. To better understand the adverse effects of amisulbrom (AML) and isoflucypram (ISO) on embryogenesis, zebrafish embryos were exposed to two different fungicides, 0.75 [...] Read more.
Fungicides are frequently detected in the water bodies, however, the adverse effects of these fungicides on aquatic lives remain limited. To better understand the adverse effects of amisulbrom (AML) and isoflucypram (ISO) on embryogenesis, zebrafish embryos were exposed to two different fungicides, 0.75 μM amisulbrom (AML) and 2.5 μM isoflucypram (ISO), for 72 h. Transcriptome sequencing was employed to identify differentially expressed genes (DEGs) after AML and ISO exposure. A total of 571 and 3471 DEGs were detected between the libraries of the two fungicides-treated groups and the control, respectively. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that PPAR signaling pathway, phototransduction, ribosome and p53 signaling pathway were significantly enriched in response to both AML and ISO stress. Moreover, a number of DEGs involved in tyrosine metabolism, phagosome pathway, cell cycle pathway, extracellular matrix (ECM) receptor interaction pathway, and arginine and proline metabolism were specially enriched after exposure to AML; a number of DEGs involved in notch signaling pathway, drug metabolism, alanine, aspartate and glutamate metabolism, amino-acyl−tRNA biosynthesis, and protein processing in endoplasmic reticulum were significantly enriched after exposure to ISO. These results provide novel insights into the toxicological mechanisms underlying fish’s responses to fungicides. Full article
(This article belongs to the Special Issue Contaminants and Microbes in Marine, Lake and River Ecosystems under a Climate Change Scenario)
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14 pages, 2011 KiB  
Article
Determination of Water Quality Characteristics and Nutrient Exchange Flux at the Sediment—Water Interface of the Yitong River in Changchun City, China
by Ke Zhao, Hang Fu, Qian Wang and Hai Lu
Water 2021, 13(24), 3555; https://doi.org/10.3390/w13243555 - 12 Dec 2021
Cited by 7 | Viewed by 2816
Abstract
In this paper, the characteristics of water pollution in Yitong River were analyzed by the comprehensive pollution index method. Combined with the pore water concentration gradient method and Fick’s first law, the release characteristics of nutrients at the sediment–water interface of Yitong River [...] Read more.
In this paper, the characteristics of water pollution in Yitong River were analyzed by the comprehensive pollution index method. Combined with the pore water concentration gradient method and Fick’s first law, the release characteristics of nutrients at the sediment–water interface of Yitong River (Jilin Province, China) were studied. The results showed that the distribution trend of nitrogen and phosphorus content in the overlying and interstitial water of the Yitong River was the same, and the highest values appeared at the S3 and S5 points in the urban section. The water quality was mainly affected by nitrogen pollutants in domestic sewage. The evaluation results of the water quality comprehensive pollution index showed that the pollution degree of interstitial water in urban areas was much higher than that of the overlying water, and the endogenous nitrogen and phosphorus pollutants had the risk of diffusion to the overlying water. The exchange flux analysis of ammonia nitrogen (NH4+-N), total dissolved nitrogen (TDN), and total dissolved phosphorus (TDP) in water showed that the diffusion flux of NH4+-N ranged from 0.03 to 6.52 mg·(m2·d)−1, and the sediment was the “source” of ammonia nitrogen pollutants. The range of TDN diffusion flux was −1.57 to 11.6 mg·(m2·d) −1, and the difference between points was large. The sediment was both the “source” and “sink” of nitrogen pollutants. The range of TDP diffusion flux was −0.05 to 0.22 mg·(m2·d) −1. Except for point S8, the TDP diffused from sediment into the water body. Among all the sampling points, the diffusion fluxes of NH4+-N, TDN, and TDP at the S3 point were the largest, the release rate of endogenous pollutants was the most rapid, and the pollution to the water quality was the most serious. The results are of great significance to the exchange flux of nutrients at the sediment–water interface of rivers and the prevention and control of water eutrophication. It also provides a reference for the study of nutrient exchange flux at the sediment–water interface of rivers and other surface water bodies worldwide. Full article
(This article belongs to the Special Issue Contaminants and Microbes in Marine, Lake and River Ecosystems under a Climate Change Scenario)
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15 pages, 2761 KiB  
Article
L-Cysteine Synthase Enhanced Sulfide Biotransformation in Subtropical Marine Mangrove Sediments as Revealed by Metagenomics Analysis
by Shuming Mo, Jinhui Li, Bin Li, Muhammad Kashif, Shiqing Nie, Jianping Liao, Guijiao Su, Qiong Jiang, Bing Yan and Chengjian Jiang
Water 2021, 13(21), 3053; https://doi.org/10.3390/w13213053 - 01 Nov 2021
Cited by 2 | Viewed by 2061
Abstract
High sulfides concentrations can be poisonous to environment because of anthropogenic waste production or natural occurrences. How to elucidate the biological transformation mechanisms of sulfide pollutants in the subtropical marine mangrove ecosystem has gained increased interest. Thus, in the present study, the sulfide [...] Read more.
High sulfides concentrations can be poisonous to environment because of anthropogenic waste production or natural occurrences. How to elucidate the biological transformation mechanisms of sulfide pollutants in the subtropical marine mangrove ecosystem has gained increased interest. Thus, in the present study, the sulfide biotransformation in subtropical mangroves ecosystem was accurately evaluated using metagenomic sequencing and quantitative polymerase chain reaction analysis. Most abundant genes were related to the organic sulfur transformation. Furthermore, an ecological model of sulfide conversion was constructed. Total phosphorus was the dominant environmental factor that drove the sulfur cycle and microbial communities. We compared mangrove and non-mangrove soils and found that the former enhanced metabolism that was related to sulfate reduction when compared to the latter. Total organic carbon, total organic nitrogen, iron, and available sulfur were the key environmental factors that effectively influenced the dissimilatory sulfate reduction. The taxonomic assignment of dissimilatory sulfate-reducing genes revealed that Desulfobacterales and Chromatiales were mainly responsible for sulfate reduction. Chromatiales were most sensitive to environmental factors. The high abundance of cysE and cysK could contribute to the coping of the microbial community with the toxic sulfide produced by Desulfobacterales. Collectively, these findings provided a theoretical basis for the mechanism of the sulfur cycle in subtropical mangrove ecosystems. Full article
(This article belongs to the Special Issue Contaminants and Microbes in Marine, Lake and River Ecosystems under a Climate Change Scenario)
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