Nitrogen addition alters composition, diversity, and functioning of microbial communities in mangrove soils: An incubation experiment

Mangrove ecosystems are important for carbon storage due to their high productivity and low decomposition rates. Waterways have experienced increased nutrient loads as a result of anthropogenic activities it is unclear how this may affect cycles in downstream mangroves that receive these nutrient-rich waters. Using laboratory-based incubation experiment, study aimed assess the effects addition on diversity structure mangrove soil bacterial communities, well biomass activity microbial community, under different oxygen conditions. Bacterial community composition was characterised using 16S rRNA gene sequencing examined through measurement respiration enzymes associated with organic matter decomposition. Nitrogen caused clear shifts composition, decreases abundance sulfate-reducing bacteria. Microbial also decreased nitrogen reduced incubations. Changes were accompanied by changes some involved carbon, nitrogen, phosphorus cycling. Under conditions, resulted significant increase metabolic quotient but no accompanying change respiration, which explained decrease biomass. The findings indicate loading has potential implications communities cycling environments warrant further investigation field • changed diversity. addition. Activity