Applied and Environmental Microbiology, Journal Year: 2023, Volume and Issue: 89(9)

Published: Sept. 6, 2023

Complete ammonia oxidizers (comammox Nitrospira) are ubiquitous in coastal wetland sediments and play an important role nitrification. Our study examined the impact of habitat modifications on comammox Nitrospira communities across tropical subtropical regions southeastern China. Samples were collected from 21 wetlands five provinces where native mudflats invaded by Spartina alterniflora subsequently converted to aquaculture ponds. The results showed that abundances mainly influenced sediment grain size rather than modifications. Compared S. marshes mudflats, pond had lower diversity, clade A.1 abundance, higher A.2 abundance. Sulfate concentration was most factor controlling diversity Nitrospira. response community change varied significantly location, environmental variables accounted for only 11.2% variations structure all sites. In three types, dispersal limitation largely controlled assembly process, indicating stochastic nature these wetlands. IMPORTANCE Comammox have recently gained attention their potential nitrification nitrous oxide (N2O) emissions soil sediment. However, distribution impacted poorly understood, particularly a large spatial scale. provides novel evidence effects modification dependent location wetland. We also found governed processes. Nevertheless, sulfate identified as key affecting abundance sediments. These findings significant they advance our understanding adaptation how future landscape may

Language: Английский