Temporal variation of coastal surface sediment bacterial communities along an environmental pollution gradient

Thiyagarajan, Vengatesen; Tsoi, Mandy Man Yee; Zhang, Wen; Qian, Pei‐Yuan

doi:10.1016/j.marenvres.2010.03.002

Cited by 15 publications

(8 citation statements)

References 31 publications

(38 reference statements)

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“…2). This observation was consistent with previous reports that substantial shifts in the bacterial community in response to mariculture [24,56] and other anthropogenic pollutions [11,57,58]. The high degree of similarity in the bacterial community compositions between D2-F and Q4-F indicated environmental stresses resulted from mariculture could drive the bacterial community composition of sediment close to each other.…”

Section: T-rflp Analysis Of Microbial Communitysupporting

confidence: 92%

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

et al. 2013

Microb Ecol

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Mariculture is one of the major seafood supplies worldwide and has caused serious environmental concerns on the coastal zone. Its rapid development has been shown to disrupt the sediment ecosystems and thus influence the benthic bacterial communities. Bacterial diversity and community structure within both adjacent farms and non-cultured zones intertidal sediments along the coasts of Qinhuangdao and Dalian, China, were investigated using full-length 16S rRNA gene-based T-RFLP analyses and clone library construction. Richness and Shannon-Wiener index were significantly increased at sites adjacent the mariculture farm with mean values of 29 and 2.97 from peak profiles of T-RFLP result. Clustering analyses suggested that impacts of mariculture on bacterial diversity of sediment were significantly larger than those resulted from temporal and spatial scales. Upon comparisons of RFLP patterns from 602 clones from libraries of the selected five samples, 137 OTUs were retrieved. Members of γ-and δ-Proteobacteria, Bacilli, Flavobacteria, and Actinobacteria were recorded in all libraries. In addition, γ-Proteobacteria were dominant in all samples (21.7~45.0 %). Redundancy analysis revealed that the distribution of bacterial composition seemed to be determined by the variables of salinity, PO 4 3− -P, NH 4 + -N, and Chlorophyll a content. The phyla of γ-Proteobacteria, Clostridia, Flavobacteria, Bacilli, and Planctomycetes were principal components to contribute to the bacterial differences of clone libraries. Our finding demonstrated that these phyla could display variations of bacterial composition linked to environmental disturbance resulted from mariculture.

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Section: T-rflp Analysis Of Microbial Communitysupporting

confidence: 92%

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

et al. 2013

Microb Ecol

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“…At site VHW, which is the one receiving the impact of the sewage effluents more directly, the main drivers of bacterioplankton dynamics were factors indicative of impact such as the amount of dissolved oxygen, phosphate and organic content (Zhang et al , 2009). Parameters indicative of pollution were also important in determining the composition of bacterial communities in sediments and they influenced temporal variability as well (Thiyagarajan et al , 2010). Detailed phylogenetic analysis of 16S rRNA gene clone libraries in seawater identified sequences related to potential human pathogens, such as Arcobacter or with likely faecal origin ( Bacteroides ) in the harbour (Zhang et al , 2007).…”

Section: Microbial Communities In Nutrient‐enriched Environmentsmentioning

confidence: 99%

Anthropogenic perturbations in marine microbial communities

et al. 2011

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Human activities impact marine ecosystems at a global scale and all levels of complexity of life. Despite their importance as key players in ecosystem processes, the stress caused to microorganisms has been greatly neglected. This fact is aggravated by difficulties in the analysis of microbial communities and their high diversity, making the definition of patterns difficult. In this review, we discuss the effects of nutrient increase, pollution by organic chemicals and heavy metals and the introduction of antibiotics and pathogens into the environment. Microbial communities respond positively to nutrients and chemical pollution by increasing cell numbers. There are also significant changes in community composition, increases in diversity and high temporal variability. These changes, which evidence the modification of the environmental conditions due to anthropogenic stress, usually alter community functionality, although this aspect has not been explored in depth. Altered microbial communities in human-impacted marine environments can in turn have detrimental effects on human health (i.e. spread of pathogens and antibiotic resistance). New threats to marine ecosystems, i.e. related to climate change, could also have an impact on microbial communities. Therefore, an effort dedicated to analyse the microbial compartment in detail should be made when studying the impact of anthropogenic activities on marine ecosystems.

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“…The spatial and temporal dynamics of bacterioplankton community is driven by multiple environmental factors such as latitudinal gradient ( Fuhrman et al, 2008 ; Milici et al, 2016 ), temperature ( Kim et al, 2016 ), predation ( Oguz et al, 2013 ; Karus et al, 2014 ), nutrients ( Kim et al, 2016 ), succession ( Chen H. et al, 2016 ), seasons ( Gilbert et al, 2012 ), and timescales ( Fuhrman et al, 2015 ). Apart from natural environmental factors, anthropogenic activities also shape the bacterioplankton assemblage and abundance pattern ( Zhang et al, 2009 ; Thiyagarajan et al, 2010 ; Zhou et al, 2011 ; Sauret et al, 2012 ; Jeffries et al, 2016 ; Meziti et al, 2016 ). For instance, the abundances of the bacterioplankton groups that increased and decreased in the impacted sites were significantly correlated with nutrients enrichment ( Fodelianakis et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

Sen

Zhou

et al. 2017

Front. Microbiol.

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Qinhuangdao coastal waters in northern China are heavily impacted by anthropogenic and natural activities, and we anticipate a direct influence of the impact on the bacterioplankton abundance and diversity inhabiting the adjacent coastal areas. To ascertain the anthropogenic influences, we first evaluated the seasonal abundance patterns and diversity of bacterioplankton in the coastal areas with varied levels of natural and anthropogenic activities and then analyzed the environmental factors which influenced the abundance patterns. Results indicated distinct patterns in bacterioplankton abundance across the warm and cold seasons in all stations. Total bacterial abundance in the stations ranged from 8.67 × 10 4 to 2.08 × 10 6 cells/mL and had significant (p < 0.01) positive correlation with total phosphorus (TP), which indicated TP as the key monitoring parameter for anthropogenic impact on nutrients cycling. Proteobacteria and Cyanobacteria were the most abundant phyla in the Qinhuangdao coastal waters. Redundancy analysis revealed significant (p < 0.01) influence of temperature, dissolved oxygen and chlorophyll a on the spatiotemporal abundance pattern of α-Proteobacteria and Cyanobacteria groups. Among the 19 identified bacterioplankton subgroups, α-Proteobacteria (phylum Proteobacteria) was the dominant one followed by Family II (phylum Cyanobacteria), representing 19.1-55.2% and 2.3-54.2% of total sequences, respectively. An inverse relationship (r = −0.82) was observed between the two dominant subgroups, α-Proteobacteria and Family II. A wide range of inverse Simpson index (10.2 to 105) revealed spatial heterogeneity of bacterioplankton diversity likely resulting from the varied anthropogenic and natural influences. Overall, our results suggested that seasonal variations impose substantial influence on shaping bacterioplankton abundance patterns. In addition, the predominance of only a few cosmopolitan species in the Qinhuangdao coastal wasters was probably an indication of their competitive advantage over other bacterioplankton groups in the degradation of anthropogenic inputs. The results provided an evidence of Bacterioplankton Abundance and Diversity Patterns their ecological significance in coastal waters impacted by seasonal inputs of the natural and anthropogenic matter. In conclusion, the findings anticipate future development of effective indicators of coastal health monitoring and subsequent management strategies to control the anthropogenic inputs in the Qinhuangdao coastal waters.

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Temporal variation of coastal surface sediment bacterial communities along an environmental pollution gradient

Cited by 15 publications

References 31 publications

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

Anthropogenic perturbations in marine microbial communities

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

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