Spatial and vertical distribution of bacterial community in the northern South China Sea

Abstract

Microbial communities are highly diverse in coastal oceans and response rapidly with changing environments. Learning about this will help us understand the ecology of microbial populations in marine ecosystems. This study aimed to assess the spatial and vertical distributions of the bacterial community in the northern South China Sea. Multi-dimensional scaling analyses revealed structural differences of the bacterial community among sampling sites and vertical depth. Result also indicated that bacterial community in most sites had higher diversity in 0-75 m depths than those in 100-200 m depths. Bacterial community of samples was positively correlation with salinity and depth, whereas was negatively correlation with temperature. Proteobacteria and Cyanobacteria were the dominant groups, which accounted for the majority of sequences. The α-Proteobacteria was highly diverse, and sequences belonged to Rhodobacterales bacteria were dominant in all characterized sequences. The current data indicate that the Rhodobacterales bacteria, especially Roseobacter clade are the diverse group in the tropical waters.

Effects of Bacillus sp. and Lactobacillus sp. combination as a water additive on the culture pond water and growth performance of hybrid grouper (Epinephelus fuscoguttatus × Epinephelus polyphekadion)

“…The stacked bar graph of the microbial community in this study displayed the dominant species in the grouper rearing seawater: Bacteroidetes, Proteobacteria, Cyanobacteria, Actinobacteria, and Firmicutes. This result is in accordance with other studies indicating that these bacterial phyla occupy the dominant ecological niches within seawater ecosystems (Sun et al, 2015;Zhang et al, 2021). This study showed significant differences in the phyla Planctomycetes and Fusobacteria.…”

Cyanobacterial community diversity in the sediments of the Pearl River Estuary in China

“…In previous studies, cyanobacteria taxa have often been observed in the Pearl River Estuary (Sun et al 2011(Sun et al , 2012(Sun et al , 2015 and these studies have indicated that cyanobacteria are the dominant group in this estuarine sediment. However, no studies on the ecological distribution of cyanobacteria in the Pearl River Estuary sediment have been reported.…”

Variations in bacterial community at Chlorophyll Maximum (C-Max) depths along the west coast of India due to seasonal changes in the primary productivity

“…The physicochemical factors play an important role in shaping the structure of marine microbial communities and cause variations at spatial scales (Wang et al, 2019). Recent studies have also shown that variations in the community composition of marine bacteria as well as patterns of worldwide bacterial (16S) diversity and community structure are strongly correlated with temperature and DO (Sun et al, 2015; James et al, 2022).…”