Occurrence of polycyclic aromatic hydrocarbons, microplastics and biofilms in Alqueva surface water at touristic spots

Raposo, Ana; Mansilha, Catarina; Veber, Alexander; Melo, Armindo; Rodrigues, João; Matias, Rui; Rebelo, Helena; Grossinho, José; Cano, Manuela; Almeida, C. Marisa R.; Nogueira, Isabel; Puškar, Ljiljana; Schade, U.; Jordão, Luísa

doi:10.1016/j.scitotenv.2022.157983

Cited by 7 publications

(5 citation statements)

References 42 publications

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“…29 Notably, our VITEK findings revealed a higher level of diversity compared to the results reported in Alqueva water. 28 Additionally, we detected distinct Staphylococcus species not previously observed in Al-Asfar Lake in a prior study. 3 Furthermore, the presence of Sphingomonas paucimobilis in our findings has been associated with polluted environments in China.…”

Section: Discussionsupporting

confidence: 63%

“…27 VITEK analysis has successfully identified 19 distinct species spanning three different phyla among the 29 tested isolates, based on their biochemical reactions. The diversity of the bacterial population was further substantiated by comparing our VITEK results with those from studies conducted in Alqueva water, 28 and Sapanca Lake (Turkey). 29 Notably, our VITEK findings revealed a higher level of diversity compared to the results reported in Alqueva water.…”

Section: Discussionmentioning

confidence: 52%

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Bacterial Diversity in Al-Asfar Lake, Al Ahsa Oasis, Saudi Arabia

Al Mousa,

Aldayel,

Genena

et al. 2024

J. Pure Appl. Microbiol.

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This study aimed to investigate bacterial diversity in Al-Asfar Lake, Al Ahsa Oasis, Saudi Arabia, based on a polyphasic approach. Water samples were collected and divided into two parts. For the culture-dependent approach, different media such as Tryptic Soy Agar (TSA), and Blood Agar (BA) were used. The obtained 29 isolates were diverse with respect to phenotypic characteristics revealed by VITEK. 18 isolates were selected for 16S rRNA sequencing based on the initial screening by VITEK. Since some types of bacteria do not grow on media, the DNA in the second part was isolated directly and subjected to metagenomic analysis. VITEK disclosed a total of 19 species belonging to 3 phyla: Pseudomonadota, Actinomycetota, and Bacillota, while the 16S rRNA sequencing revealed 12 species that could be amplified and sequenced. Metagenomic analysis exhibited variation in the relative abundance of 13 phyla, 18 classes, 20 families, 16 genera, and 24 species. Four dominant phyla are represented, including Firmicutes, Cyanobacteria, Bacteroidota, and Proteobacteria, respectively. Furthermore, functional gene screening revealed 33 functional categories including the metabolism of cofactors, vitamins, and xenobiotic biodegradation. This study affords insights into the bacterial diversity and fundamental biogeochemical processes in the lake and paves the way for the potential exploitation of microbial wealth in biotechnological applications.

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Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 52%

Bacterial Diversity in Al-Asfar Lake, Al Ahsa Oasis, Saudi Arabia

Al Mousa,

Aldayel,

Genena

et al. 2024

J. Pure Appl. Microbiol.

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“…All natural freshwater samples were collected from dams located in Alentejo. Samples from Monsaraz (Mz), Mourão (Mo) and Amieira (Am) were collected during 2021 once per season [16] or during the summer of 2016 for samples from Monte da Rocha (MR) and Alvito (Al) [17]. All the samples from anthropogenic freshwater reservoirs were collected during 2016 in an urban park located in Lisbon.…”

Section: Characterization Of Aeromonas Isolatesmentioning

confidence: 99%

Aeromonas spp. in Freshwater Bodies: Antimicrobial Resistance and Biofilm Assembly

Nascimento,

Rodrigues,

Matias

et al. 2024

Antibiotics

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Aeromonas spp. are environmental bacteria able to infect animals and humans. Here, we aim to evaluate the role of biofilms in Aeromonas persistence in freshwater. Aeromonas were isolated from water and biofilm samples and identified by Vitek-MS and 16S rRNA sequencing. Antibiotic susceptibility profiles were determined according to EUCAST, and a crystal violet assay was used to assess biofilm assembly. MTT and the enumeration of colony-forming units were used to evaluate biofilm and planktonic Aeromonas susceptibility to chlorination, respectively. Identification at the species level was challenging, suggesting the need to improve the used methodologies. Five different Aeromonas species (A. salmonicida, A. hydrophila, A. media, A. popoffii and A. veronii) were identified from water, and one species was identified from biofilms (A. veronii). A. veronnii and A. salmonicida presented resistance to different antibiotics, whith the highest resistance rate observed for A. salmonicida (multiple antibiotic resistance index of 0.25). Of the 21 isolates, 11 were biofilm producers, and 10 of them were strong biofilm producers (SBPs). The SBPs presented increased tolerance to chlorine disinfection when compared with their planktonic counterparts. In order to elucidate the mechanisms underlying biofilm tolerance to chlorine and support the importance of preventing biofilm assembly in water reservoirs, further research is required.

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“…The study focused on selected groups of indicators characterizing: (a) physical condition: total suspended solids (TSS) concentration; (b) oxygen conditions and organic pollutants: chemical oxygen demand COD; (c) biogenic conditions: Kjeldahl nitrogen TKN, nitrate nitrogen N-NO 3 , nitrite nitrogen N-NO 2 , total nitrogen TN, and total phosphorus TP, were examined. In addition, specific synthetic and non-synthetic pollutants in the form of petroleum hydrocarbons (hydrocarbon oil index HOI) [37], as well as heavy metals such as zinc (Zn), copper (Cu), and mercury (Hg) were also evaluated. The assessment also included the determination of substances particularly harmful to the aquatic environment identified as water policy priority substances, which include polycyclic aromatic hydrocarbons (PAHs).…”

Section: Stormwater and Surface Water Pollution Indicators Testedmentioning

confidence: 99%

Determination of Pollution and Environmental Risk Assessment of Stormwater and the Receiving River, Case Study of the Sudół River Catchment, Poland

Godyń

Bodziony

Grela

et al. 2022

IJERPH

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Changes in the land use of urban catchments and the discharge of stormwater to rivers are causing surface water pollution. Measurements were taken of the quality of discharged stormwater from two areas with different types of development: a residential area and a residential–commercial area, as well as the quality of the Sudół River water below the sewer outlets. The following indicators were studied: TSS, COD, N–NO3, N–NO2, TKN, TN, TP, Zn, Cu, Hg, HOI, and PAHs. The influence of land use on the magnitudes of flows in the river was modeled using the SCS–CN method and the Snyder Unit Hydrograph Model. The results showed an increase in sealing and a resulting increase in surface runoff. Concentrations of pollutants in stormwater and analysis of the potential amounts of loadings contributed by the analyzed stormwater outlets indicate that they may be responsible for the failure to meet environmental targets in the Sudół River. Environmental risk assessment shows that the aquatic ecosystem is at risk. A risk factor indicating a high risk of adverse environmental effects was determined for N–NO3, Zn, and Cu, among others.

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Occurrence of polycyclic aromatic hydrocarbons, microplastics and biofilms in Alqueva surface water at touristic spots

Cited by 7 publications

References 42 publications

Bacterial Diversity in Al-Asfar Lake, Al Ahsa Oasis, Saudi Arabia

Bacterial Diversity in Al-Asfar Lake, Al Ahsa Oasis, Saudi Arabia

Aeromonas spp. in Freshwater Bodies: Antimicrobial Resistance and Biofilm Assembly

Determination of Pollution and Environmental Risk Assessment of Stormwater and the Receiving River, Case Study of the Sudół River Catchment, Poland

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