Assembly Processes Underlying Biotic Homogenization of Soil Microbial Communities in an Urban Ecosystem

Land Degradation and Development, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

ABSTRACT Urbanization is known to cause biotic homogenization, but the processes controlling homogenization are not well understood. Here, we analyzed microbial communities from 258 soil samples covering large landscape heterogeneity of entire Shanghai megacity. We measured urbanization intensity by incorporating habitat fragmentation, connectivity, and distance city center. determined extent which bacterial fungal community composition varied with how different assembly contributed variations. found significantly positive effects on compositional bacteria fungi, proportions generalists specialists were related homogenization. Dispersal ecological drift explained at least 60% variations, increased influences dispersal reducing specialists. Environmental variables < 28% higher led a simplified co‐occurrence network an proportion in network. These results indicate that homogenized shifting generalist specialist microbes, weak environmental selection. Therefore, conserve urban biodiversity ecosystem functioning face complex human impacts, management strategies should consider only conditions also drift, as species preferences, increase effectiveness actions.

Language: Английский

Alterations in carbon and nitrogen cycling mediated by soil microbes due to the conversion of karst mountainous forests into urban parks

CATENA, Journal Year: 2024, Volume and Issue: 245, P. 108339 - 108339

Published: Aug. 27, 2024

Language: Английский

The Salinity Survival Strategy of Chenopodium quinoa: Investigating Microbial Community Shifts and Nitrogen Cycling in Saline Soils

Microorganisms, Journal Year: 2023, Volume and Issue: 11(12), P. 2829 - 2829

Published: Nov. 21, 2023

Quinoa is extensively cultivated for its nutritional value, and exceptional capacity to endure elevated salt levels presents a promising resolution the agricultural quandaries posed by salinity stress. However, limited research has been dedicated elucidating correlation between alterations in soil microbial community nitrogen transformations. To scrutinize underlying mechanisms behind quinoa's tolerance, we assessed changes structure abundance of transformation genes across three distinct thresholds (1 g·kg

Language: Английский