Deterministic processes dominate archaeal community assembly from the Pearl River to the northern South China Sea

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: June 22, 2023

Archaea play a significant role in the biogeochemical cycling of nutrients estuaries. However, comprehensive researches about their assembly processes remain notably insufficient. In this study, we systematically examined archaeal community dynamics distinguished between low-salinity and high-salinity groups water surface sediments over 600-kilometer range from upper Pearl River (PR) to northern South China Sea (NSCS). Neutral model analysis together with null showed that C-score values were greater than 2, suggesting deterministic could dominate those planktonic or benthic communities at both sites. And contributed more environments PR NSCS. Furthermore, through co-occurrence network analysis, found possessed closer interactions higher proportions negative groups, which might be due larger environmental heterogeneities reflected by nutrient concentrations samples. Collectively, our work investigated composition networks as well NSCS, yielding new insights into estuary's mechanisms.

Language: Английский

---

Decoupling of diversity and network complexity of bacterial communities during water quality deterioration

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 155, P. 86 - 95

Published: Nov. 4, 2024

Language: Английский

---

Impact of soil fissure status on microbial community in mining-disturbed area, the northern Shaanxi province

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Aug. 29, 2024

Mining disturbance has great impacts on soil physicochemical factors, causing notable differences between pre-mining and after-mining conditions, coal mining areas non-mined areas. However, little is known about whether the fissure statuses induced by activities affect edaphic factors how microbial communities respond to these development states. In this study, we systematically investigated in a area exhibiting full status of fissures, where sampling sites were divided into closure zones. Microbial alpha-and beta-diversity, correlation coefficient matrix, non-metric multi-dimensional scaling, principal co-ordinates analysis, mantel test, co-occurrence network employed elucidate variations, correlations, interactions under two different Results suggested that properties significantly affected states, showing an increasing trend moisture content nutrients. The associations among have weakened during process. Soil showed compositions underlying influential mechanisms content, pH, particle compositions, organic matter, heavy metals largely communities. Rare species vulnerable keystone taxa reinforced overall interconnections community (e.g., Nordella , Sphingomonas Massilia Rubritepida ). Our study revealed distinct states communities, conditions key contributions particularly abundance ecological roles rare species.

Language: Английский

---

Effect of Fe3+ on the nutrient removal performance and microbial community in a biofilm system

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: April 6, 2023

In this study, the influence of Fe 3+ on N removal, microbial assembly, and species interactions in a biofilm system was determined. The results showed that maximum efficiencies ammonia nitrogen (NH 4 + -N), total (TN), phosphorus (P), chemical oxygen demand (COD) removal were achieved using 10 mg/L , reaching values 100, 78.85, 95.8%, respectively, whereas at concentrations 15 30 suppressed NH -N, TN, COD. terms absolute abundance, expression bacterial amoA narG nirK napA maximal presence (9.18 × 5 8.58 8 1.09 1.07 9 copies/g dry weight, respectively). Irrespective concentrations, P efficiency remained almost 100%. Candidatus _Competibacter (10.26–23.32%) identified as most abundant genus within system. Determinism (50%) stochasticity contributed equally to community assembly. Co-occurrence network analysis revealed 60.94% OTUs exhibited positive interactions, 39.06% negative interactions. Within OTU-based co-occurrence network, fourteen key microbes. stability found be predominantly shaped by cooperation, complemented competition for resources or niche incompatibility. study suggested during wastewater treatment plants methods, concentration supplemental should maintained mg/L, which would not only contribute elimination, but also enhance COD removal.

Language: Английский

---

Spatio-temporal variation of bacterial community structure in two intertidal sediment types of Jiaozhou Bay

Environmental Research, Journal Year: 2023, Volume and Issue: 237, P. 116743 - 116743

Published: July 25, 2023

Language: Английский

---