Some Metabolic, Diversity and Toxicity Aspects of Bacterial Communities Life in Aquatic Sediments

Zlatkovic, S.

doi:10.15406/jmen.2017.05.00156

Cited by 5 publications

(4 citation statements)

References 22 publications

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“…The marine biology stocks in the areas around ARs can generally be restored or strengthened after their deployment due to the improved productivity in the region and the accumulation of fish attracted from adjacent areas [47]. The long-term biological deposition causes an increase in humic acid and sulfide in sediments, affecting the sediments' pH [48][49][50][51]. Compared to water samples, this emphasizes the sediment samples' accumulation properties and relative stability [52].…”

Section: Changes In Physicochemical Characteristics Of Overlying Wate...mentioning

confidence: 99%

The Effect of the Artificial Reef on the Structure and Function of Sediment Bacterial Community

et al. 2022

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The bacterial community in sediment is sensitive to artificial disturbance, and they respond differently to human disturbance, such as changing the nutrient cycling and energy flow in marine ecosystems. However, little is known about the dynamics and distribution of bacterial community structures in marine sediments and potential biogeochemical functions during the long-time succession in marine ranching. In the present study, we compared the dynamics of the bacterial composition and potential biogeochemical functions of sediment to ten years (TR) and one-year new artificial reef (NR) areas using metagenomic next-generation sequencing technology. Results revealed that NR reduces the Pielou’s evenness and Shannon index. Similarly, nonmetric multidimensional scaling showed that the beta diversity of sediment bacterial communities in NR significantly differed between TR and non-artificial reef areas. Previously, TR biomarkers were frequently associated with organic matter decomposing and assimilating in the organically enriched sediments (i.e., Acinetobacter). The soluble reactive phosphate (SRP) and total phosphorus (TP) concentrations were thought to be the primary driving forces in shaping the microbial community in sediment. Pseudomonas, Lactobacillus, and Ralstonia have a significant positive correlation with SRP, TP, nitrate, and TN, but a negative association with pH, Salinity, Hg, and depth. NR was found to have more negative correlation nodes, indicating that taxa face more competition or predation press. Vibrio served as the module-hubs in the network in all areas. In addition, chemoheterotrophy, aerobic chemoheterotrophy, and fermentation were the three most prominent functions of the three areas, accounting for 59.96% of the relative abundance of the functional annotation. Different bacteria in sediments may change the amount of biogeochemical cycle in the marine ranching ecosystem. These findings can increase our understanding of the succession of the microecosystem for the marine ranching sedimentary environment by revealing how artificial reefs affect the indigenous sediment bacterial community and their responses to environmental variation.

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Section: Changes In Physicochemical Characteristics Of Overlying Wate...mentioning

confidence: 99%

The Effect of the Artificial Reef on the Structure and Function of Sediment Bacterial Community

et al. 2022

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“…The nature of the catchment basin, including climatic variability or land use, may have an indirect effect on the functioning of organisms in the hyporheic zone [9]. According to the views presented in the literature [12][13][14][15], the following develop in bottom sediment: anaerobic putrefactive microflora, e.g., hydrogen sulphide-releasing, SO 4 2− reducing, denitrifying-NO 3 − reducing, methanogenic (methane-releasing), and hydrogen-oxidising bacteria; anaerobic cellulolytic bacteria, e.g., hemicellulose-degrading Clostridium; and aerobic cellulolytic bacteria, e.g., Sporocytophaga, Cytophaga, Pseudomonas, and Achromobacter.…”

Section: Introductionmentioning

confidence: 99%

Role of River–Lake System Sediments and Microbial Activity in the Hyporheic Zone

Kuriata-Potasznik

Szymczyk

Bęś

et al. 2021

Water

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The effect of river–lake systems on the surface water self-purification process is a significant and not fully recognised scientific issue. The conditions prevailing in the hyporheic zone of these ecosystems are of great importance in the process of component exchange between water and sediments. The aim of this study was to investigate the influence of the type of sediments located at the bottom of the riverbed being part of a river–lake system on microbial activity in the hyporheic zone. An ex situ experiment was used to study the microbiological activity and the transformation of components in the collected river sediments. It was found that the specific properties of sediments varied depending on their location in the riverbed between the lakes comprising the system and that the prevailing meteorological conditions can also have an effect on microbial activity in the hyporheic zone, e.g., aerobic conditions. These conditions determined the intensity of component conversion in the sediments due to microbial metabolism. A closer understanding of the processes occurring in the hyporheic zone may allow the processes of water self-purification within river–lake systems to be supported in the future, which will contribute to the improvement of surface water quality.

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“…The organic carbon decomposition process may be impacted by the changes in mangrove sediment physico-chemical parameters, which in turn alter the microbial behaviour and pattern of diversity (Matsui et al 2015;Hossain & Nuruddin 2016;Zlatkovic 2017;Feng et al 2020). Methanogenic microorganisms are strictly anaerobic; their development, therefore, takes place only at low redox potential, which occurs when the soil is waterlogged (Smith et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of methane and carbon dioxide emissions in the reclaimed islands of Sundarban mangrove ecosystem, India

2021

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The loss and deterioration of mangroves would lead to potentially important greenhouse gases (GHG) from the mangrove ecosystem. Seasonal variations of methane (CH 4 ) and carbon dioxide (CO 2 ) fluxes are studied in the Indian part of the Sundarban mangrove ecosystem. Considering the importance of CH 4 and CO 2 fluxes, a dynamic model is proposed here with CH 4 and CO 2 as state variables. The data used in the model are collected and analysed from the field over two years. The parameters that are taken from the literature sources are calibrated in the model. Sensitivity analysis is conducted to assess the valuable contribution of various parameters to the dynamics of CH 4 and CO 2 emissions from the mangrove beds. Model simulation results are appropriately validated with the observed data. Results showed that CH 4 and CO 2 fluxes were higher during monsoon. Pearson correlation was done to assess the relationships between emissions and all the physical-chemical factors involved in the model. Sensitivity analysis indicated that the temperature sensitivity (Q 10 ) was the system-sensitive parameter for CH 4 and CO 2 emissions. The soil moisture and relative light intensity were the sensitive parameters for CH 4 and CO 2 emissions, respectively. Model showed that the increase in the anthropogenic emissions including emissions from livestock and fossil fuel caused an increase of 2% of CH 4 and 3% of CO 2 in the system, respectively. The proposed model could be a tool for environmental managers to assess the emission process at different global locations.

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Some Metabolic, Diversity and Toxicity Aspects of Bacterial Communities Life in Aquatic Sediments

Cited by 5 publications

References 22 publications

The Effect of the Artificial Reef on the Structure and Function of Sediment Bacterial Community

The Effect of the Artificial Reef on the Structure and Function of Sediment Bacterial Community

Role of River–Lake System Sediments and Microbial Activity in the Hyporheic Zone

Dynamics of methane and carbon dioxide emissions in the reclaimed islands of Sundarban mangrove ecosystem, India

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