Bacterial diversity patterns of the intertidal biofilm in urban beaches of Río de la Plata

Piccini, Claudia; García‐Alonso, Javier

doi:10.1016/j.marpolbul.2014.08.039

Cited by 17 publications

(2 citation statements)

References 49 publications

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“…They may partly replace Nitrobacter and nirK-type denitrifying bacteria along the salinity gradient for the ecosystem function. Previous studies have confirmed that salinity directly affects the structure and diversity of bacterial communities in coastal wetlands [60,61]. Besides EC, we also found other factors influencing the composition of the nitrifiers and denitrifiers community.…”

Section: Impact Of Salinity On the Community Structure Of Nitrifiers ...supporting

confidence: 78%

Response of Nitrifier and Denitrifier Abundance to Salinity Gradients in Agricultural Soils at the Yellow River Estuary

Huang

Luo

2022

Agronomy

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Salinization is considered a threat to agricultural soil and decreases crop yield worldwide. Nitrification and denitrification are the core processes of soil N-cycle. However, the response of nitrifiers and denitrifiers to salinity in agricultural soils remains ambiguous. The study aimed to explore the effect of salinity on nitrifiers and denitrifiers communities in agricultural soils along a naturally occurring salinity gradient. The effects of salinity on the abundance, composition, and interactions of nitrifiers and denitrifiers in surface soils were investigated. The abundance of nitrifiers significantly decreased in response to the increase in salinity. Ammonia-oxidizing archaea (AOA) were more susceptible to salinity elevation than ammonia-oxidizing bacteria (AOB). Nitrospira and Nitrobacter showed a similar trend to the salinity gradient, but the relative abundance of Nitrobacter was increased in the saline soils. High salinity decreased the abundance of napA and nirK, but had no significant effect on other marker genes for denitrification. Besides electrical conductivity, total sulfur (TS)+available potassium (AK) and TN+TS+C/N+total phosphorus (TP)+AK significantly explained the variation in denitrifier and nitrifier communities. We also found that high salinity decreased the connections between different N functional genes. These results implied the alteration of the nitrogen cycling community by high salinity mainly through decreasing AOA, NOB, and some denitrifiers with nitrate or nitrite reduction potentials and weakening the connectivity between nitrogen cycling drivers.

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Section: Impact Of Salinity On the Community Structure Of Nitrifiers ...supporting

confidence: 78%

Response of Nitrifier and Denitrifier Abundance to Salinity Gradients in Agricultural Soils at the Yellow River Estuary

Huang

Luo

2022

Agronomy

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“…By adjusting and maintaining the ecological balance in aquatic ecosystems, microorganisms play an indispensable role in the self-purification of waterbodies and could therefore be considered pivotal indicators of the quality of these ecosystems ( Hou et al, 2013 ; Piccini and García-Alonso, 2015 ; Ma et al, 2018 ). Changes in the microbial community may have impacts on water quality, such as causing algal blooms and stinking sewers.…”

Section: Introductionmentioning

confidence: 99%

Pro- and eukaryotic keystone taxa as potential bio-indicators for the water quality of subtropical Lake Dongqian

Huang

et al. 2023

Front. Microbiol.

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The microbial community plays an important role in the biogeochemical cycles in water aquatic ecosystems, and it is regulated by environmental variables. However, the relationships between microbial keystone taxa and water variables, which play a pivotal role in aquatic ecosystems, has not been clarified in detail. We analyzed the seasonal variation in microbial communities and co-occurrence network in the representative areas taking Lake Dongqian as an example. Both pro- and eukaryotic community compositions were more affected by seasons than by sites, and the prokaryotes were more strongly impacted by seasons than the eukaryotes. Total nitrogen, pH, temperature, chemical oxygen demand, dissolved oxygen and chlorophyll a significantly affected the prokaryotic community, while the eukaryotic community was significantly influenced by total nitrogen, ammonia, pH, temperature and dissolved oxygen. The eukaryotic network was more complex than that of prokaryotes, whereas the number of eukaryotic keystone taxa was less than that of prokaryotes. The prokaryotic keystone taxa belonged mainly to Alphaproteobacteria, Betaproteobacteria, Actinobacteria and Bacteroidetes. It is noteworthy that some of the keystone taxa involved in nitrogen cycling are significantly related to total nitrogen, ammonia, temperature and chlorophyll a, including Polaromonas, Albidiferax, SM1A02 and Leptolyngbya so on. And the eukaryotic keystone taxa were found in Ascomycota, Choanoflagellida and Heterophryidae. The mutualistic pattern between pro- and eukaryotes was more evident than the competitive pattern. Therefore, it suggests that keystone taxa could be as bio-indicators of aquatic ecosystems.

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Relationships between fecal indicator abundance in water and sand and the presence of pathogenic genes in sand of recreational beaches

Cabot,

Piccini,

Inchausti

et al. 2024

Environ Monit Assess

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Bacterial diversity patterns of the intertidal biofilm in urban beaches of Río de la Plata

Cited by 17 publications

References 49 publications

Response of Nitrifier and Denitrifier Abundance to Salinity Gradients in Agricultural Soils at the Yellow River Estuary

Response of Nitrifier and Denitrifier Abundance to Salinity Gradients in Agricultural Soils at the Yellow River Estuary

Pro- and eukaryotic keystone taxa as potential bio-indicators for the water quality of subtropical Lake Dongqian

Relationships between fecal indicator abundance in water and sand and the presence of pathogenic genes in sand of recreational beaches

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