TY - JOUR
T1 - Tropical cyclone effects on water and sediment chemistry and the microbial community in estuarine ecosystems
AU - Huang, Shan
AU - Sherman, Arianna
AU - Chen, Chen
AU - Jaffé, Peter R.
N1 - Funding Information:
We thank Prof. Joann Whalen from McGill University and Dr. Xin Sun from Princeton University for their valuable discussions. This work was supported by National Key Research and Development Program of China ( 2016YFE0106600 ), Science and Technology Program by Guangdong Natural Resources Department [ GDMRC(2020)063 ] and National Natural Science Foundation of China ( 41501278 ). We also gratefully acknowledge support from The Moore Charitable Foundation.
Funding Information:
There is an observed shift in the composition of nitrifiers in which Nitrospira and Nitrosococcus were dominant in the pre-storm period; however, Nitrospina and Nitrosomonas increased by 35% and 330% respectively immediately following storm events, becoming the dominant nitrite-oxidizing bacteria (NOB) and ammonia-oxidizing bacteria (AOB) in the system (Fig. 5). This shift from pre-storm and post-storm conditions was observed for each year analyzed in this study. Although ammonium oxidizing archaea (AOA) have been reported as the main NH4+ oxidizers and N2O producer in oceans (Karner et al., 2001; Santoro et al., 2011; Horak et al., 2013) and estuaries (Abell et al., 2010), AOA were not found in this study. Candidatus Nitrosopheara and Candidatus Nitrosopumilus were detected, but neither was at a proportion higher than 0.1% of the total microbial abundance before or after storm events. One possibility is that AOA are more adaptable to oligotrophic conditions, and these eutrophic estuaries can support more AOB groups.We thank Prof. Joann Whalen from McGill University and Dr. Xin Sun from Princeton University for their valuable discussions. This work was supported by National Key Research and Development Program of China (2016YFE0106600), Science and Technology Program by Guangdong Natural Resources Department [GDMRC(2020)063] and National Natural Science Foundation of China (41501278). We also gratefully acknowledge support from The Moore Charitable Foundation.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/10/1
Y1 - 2021/10/1
N2 - Frequent and intense storm disturbances can have widespread and strong effects on the nitrogen and iron cycles and their associated microbial communities in estuary systems. A three-year investigation was conducted in the Pearl River and Zhanjiang estuaries in Guangdong Province, China through repeated sampling at three timepoints, defined as pre-storm (<1 month before storm), post-storm (<1 month after storm), and non-storm (6–8 months after storm). Increased nutrient concentrations (total organic carbon, nitrate, nitrite, ammonium, and sulfate) in both the sediment and water column were observed immediately after storm. The microbial community experienced extensive and immediate changes determined by an observed composition shift in the nitrogen and iron-cycling microbiomes. Analysis of sediment samples displayed a shift from nitrogen-to sulfur-cycling microorganisms and an increase in microbial interactions that were not observed in the water column. The chemical profile and microbial community components both returned to baseline conditions 6–8 months following storm disturbance. Finally, significant correlations were found between chemical and microbial data, suggesting that niche-sharing microbes may respond similarly to stimuli that impact their ecosystem. Increases in nutrient availability can favor the abundance of specific taxa, as demonstrated by an increase in Acidimicrobium that affect both nitrogen and iron cycling.
AB - Frequent and intense storm disturbances can have widespread and strong effects on the nitrogen and iron cycles and their associated microbial communities in estuary systems. A three-year investigation was conducted in the Pearl River and Zhanjiang estuaries in Guangdong Province, China through repeated sampling at three timepoints, defined as pre-storm (<1 month before storm), post-storm (<1 month after storm), and non-storm (6–8 months after storm). Increased nutrient concentrations (total organic carbon, nitrate, nitrite, ammonium, and sulfate) in both the sediment and water column were observed immediately after storm. The microbial community experienced extensive and immediate changes determined by an observed composition shift in the nitrogen and iron-cycling microbiomes. Analysis of sediment samples displayed a shift from nitrogen-to sulfur-cycling microorganisms and an increase in microbial interactions that were not observed in the water column. The chemical profile and microbial community components both returned to baseline conditions 6–8 months following storm disturbance. Finally, significant correlations were found between chemical and microbial data, suggesting that niche-sharing microbes may respond similarly to stimuli that impact their ecosystem. Increases in nutrient availability can favor the abundance of specific taxa, as demonstrated by an increase in Acidimicrobium that affect both nitrogen and iron cycling.
KW - Functional genes
KW - Microbial co-occurrence networks
KW - Microbial community
KW - Nitrogen (N) and iron (Fe) cycles
KW - Sediment and water column
KW - Storm disturbance
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U2 - 10.1016/j.envpol.2021.117228
DO - 10.1016/j.envpol.2021.117228
M3 - Article
C2 - 33991740
AN - SCOPUS:85105787604
SN - 0269-7491
VL - 286
JO - Environmental Pollution
JF - Environmental Pollution
M1 - 117228
ER -